31/07/2026
๐๐ก๐ ๐๐๐-๐๐ญ๐ซ๐ข๐ฉ๐๐ ๐๐จ๐๐ญ ๐๐๐๐ฅ๐ ๐๐ง๐ฌ๐๐๐ญ (๐๐๐๐) ๐๐ฌ ๐๐ฎ๐ข๐๐ญ๐ฅ๐ฒ ๐๐๐ง๐ค๐ซ๐ฎ๐ฉ๐ญ๐ข๐ง๐ ๐๐ก๐ข๐ฅ๐ข๐ฉ๐ฉ๐ข๐ง๐ ๐๐ฎ๐ ๐๐ซ๐๐๐ง๐ ๐
๐๐ซ๐ฆ๐ฌ โ ๐๐๐ซ๐'๐ฌ ๐๐ก๐ฒ ๐๐ฉ๐ซ๐๐ฒ๐ข๐ง๐ ๐๐๐ซ๐๐๐ซ ๐๐จ๐ง'๐ญ ๐๐๐ฏ๐ ๐๐ก๐๐ฆ
By Edwin B. Espiloy
Ten years ago, no Filipino sugarcane farmer had heard of the Red-Striped Soft Scale Insect. Today, it is threatening to undo decades of gains in one of the country's oldest agricultural industries โ and most of the chemical solutions being poured onto it are, quite literally, running off the leaves and doing nothing.
I've spent four decades in Philippine agriculture, and I've learned to be suspicious of any pest crisis that farmers try to fight the same way they fought the last one. The Red-Striped Soft Scale Insect, or RSSI, is exactly that kind of trap. It looks like a routine infestation. It is not. It is an invasive alien species with no natural enemies here, a reproductive strategy built for exponential outbreaks, and a body armor that makes most contact insecticides irrelevant. Understanding why is the difference between a farm that recovers and one that doesn't.
๐ ๐๐๐ฌ๐ญ ๐๐ก๐๐ญ ๐๐ข๐๐ง'๐ญ ๐๐ฑ๐ข๐ฌ๐ญ ๐๐๐ซ๐ ๐๐ง๐ญ๐ข๐ฅ ๐๐๐๐
RSSI, scientifically named Pulvinaria tenuivalvata, was first detected in the Philippines in Bacolor, Pampanga, in June 2022 โ confirmed by the Sugar Regulatory Administration's Luzon Agricultural Research and Extension Center (SRA-LAREC) and later verified through molecular analysis by the University of the Philippines Los Baรฑos National Crop Protection Center [1][2]. There is no record of this insect on Philippine sugarcane before that date. This is not a pest cycle we forgot how to manage. It is a new arrival, and our fields, our beneficial insects, and our farming systems have had zero time to adapt.
Since 2022, the numbers have moved from a local curiosity to a national emergency. What began as isolated detections in Pampanga spread to Batangas and Laguna by 2023 [2]. By mid-2025, the Sugar Regulatory Administration was reporting infestations across Negros Occidental, Negros Oriental, Iloilo, and Capiz โ provinces that together produce the bulk of the nation's sugar [4][8]. By July 2026, provincial authorities in Negros Occidental had declared a state of calamity after roughly 61,000 hectares โ nearly a third of the province's sugarcane area โ were confirmed affected [11], with SRA warning that at least 67,000 hectares had reached a minimum infestation threshold [17]. Bukidnon โ Mindanao's fastest-growing sugar province โ has confirmed its own infestations in Kitaotao, Quezon, and Valencia City [10]. This is a four-year trajectory from zero to a multi-island crisis.
๐๐จ๐ญ ๐๐ฎ๐ฌ๐ญ ๐ ๐๐ก๐ข๐ฅ๐ข๐ฉ๐ฉ๐ข๐ง๐ ๐๐ซ๐จ๐๐ฅ๐๐ฆ: ๐๐ก๐๐ซ๐ ๐๐ฅ๐ฌ๐ ๐๐๐๐ ๐๐๐ฌ ๐๐ญ๐ซ๐ฎ๐๐ค, ๐๐ง๐ ๐๐ก๐๐ญ ๐๐ญ๐ก๐๐ซ ๐๐จ๐ฎ๐ง๐ญ๐ซ๐ข๐๐ฌ ๐๐ซ๐ ๐๐จ๐ข๐ง๐
It's worth being clear about something the domestic coverage often glosses over: RSSI did not spring out of nowhere. The species has a documented global distribution stretching across the Ethiopian and Palearctic regions โ it has been formally reported in Egypt, Ethiopia, Kenya, Mali, Senegal, Sierra Leone, South Africa, Tanzania, Uganda, and Zimbabwe, well before it was ever detected in the Philippines [2][19]. The Philippines falls entirely outside its known historical range, which is exactly why our fields had no natural resistance built up when it arrived.
Egypt has by far the longest and most detailed research history with this pest, particularly in Upper Egypt's sugarcane belt around Luxor and Qena, where RSSI has been studied since at least the early 2000s [21][24]. Egyptian researchers have documented four seasonal population peaks per year tied to weather patterns, and have built forecasting models using nearly two decades of climate data to help farmers time interventions before outbreaks peak [24]. On the control side, Egyptian trials have tested insecticides including Malatox, Sulfar, Admiral, Nomolt, Tafaban, and Biover against nymphal and adult stages, generally finding nymphs far more susceptible than mature, wax-armored adults โ the same structural weakness this article discusses below [20]. Alongside chemical trials, Egyptian entomologists have also identified and studied natural enemies already established there, including the parasitoid wasps Coccophagus scutellaris and Coccophagus ochraceus, and a predatory lacewing, Nimboa adelae, that feeds on the scale insect directly [21].
The broader lesson from Egypt and the African range countries is one the Philippines is now relearning in real time: where RSSI has been established for decades, control has shifted toward integrated approaches โ seasonal monitoring calibrated to local weather, targeted use of insecticides against the vulnerable nymphal stage rather than blanket spraying of hardened adults, and cultivation of natural predator and parasitoid populations rather than eliminating them incidentally through broad-spectrum chemical use. That is precisely the direction SRA, UPLB-NCPC, and the Philippine Sugar Research Institute Foundation (PHILSURIN) are now pushing the Philippine industry toward, only under far more compressed time pressure.
๐๐ก๐ฒ ๐๐ก๐ข๐ฌ ๐๐๐ฌ๐ญ ๐๐๐ก๐๐ฏ๐๐ฌ ๐๐ข๐๐๐๐ซ๐๐ง๐ญ๐ฅ๐ฒ ๐
๐ซ๐จ๐ฆ ๐๐ง๐ฒ๐ญ๐ก๐ข๐ง๐ ๐๐'๐ฏ๐ ๐
๐จ๐ฎ๐ ๐ก๐ญ ๐๐๐๐จ๐ซ๐
Three biological facts explain why RSSI has moved so fast here.
First, it has no natural check in the Philippines. Sugarcane ecosystems here evolved alongside local pests and the predators and parasitoids that keep them in balance. RSSI arrived without that ecosystem. Interestingly, UPLB-NCPC field teams have already documented an endoparasitoid wasp attacking RSSI naturally in Pampanga, with parasitism rates exceeding 30 percent at SRA-LAREC and as high as 67 percent in Porac [2] โ a genuinely hopeful sign that biological control can work here, similar to what Egypt has already established with its own parasitoid complex, but one that needs deliberate cultivation, not accidental hope.
Second, its reproduction is aggressive. Adult female RSSI can live more than sixty days and lay eggs continuously through most of that lifespan, according to a 2026 biology study published by ISSAAS researchers [3]. I want to be precise here rather than dramatic: published fecundity data for this insect group generally range from roughly 150 to over 250 eggs per female depending on temperature and host condition [3] โ not a single fixed number, but consistently high enough, combined with overlapping generations, to produce localized population explosions within a single cropping season.
Third, its damage mechanism is a double blow. RSSI feeds by sucking sap from the underside of leaves, weakening the plant directly, typically starting on the lower leaves before moving upward as the infestation progresses [4][5]. It then excretes honeydew, a sugary waste that coats the leaf surface and feeds the growth of black sooty mold. That mold layer blocks sunlight from reaching the leaf, shutting down photosynthesis on top of the sap loss already occurring. The Sugar Regulatory Administration has publicly stated this combined damage can cut sugar yield by close to 50 percent in heavily infested fields [25].
๐๐ก๐ฒ ๐๐ญ๐๐ง๐๐๐ซ๐ ๐๐ก๐๐ฆ๐ข๐๐๐ฅ ๐๐ฉ๐ซ๐๐ฒ๐ข๐ง๐ ๐๐ฌ ๐
๐๐ข๐ฅ๐ข๐ง๐ ๐
๐๐ซ๐ฆ๐๐ซ๐ฌ
This is the part every farmer needs to understand before spending another peso on insecticide, because the failure is structural, not a matter of using more product or a stronger brand.
Mature RSSI develop a waxy protective scale over their bodies. This is a physical shield, not a biochemical resistance โ contact insecticides simply cannot pe*****te it once the insect matures. Spraying an adult population with standard formulations is, mechanically, like trying to poison something wearing a raincoat. This mirrors what Egyptian trials found decades ago: nymphs, before the wax shield fully develops, are consistently far more vulnerable to insecticides than hardened adults [20] โ which is exactly why timing matters as much as product choice.
Compounding this, RSSI colonies live almost exclusively on the undersides of leaves, concentrated toward the base of the plant, inside a dense sugarcane canopy. Conventional overhead boom sprayers and standard aerial spraying wet the top of the canopy and the upper leaf surface โ precisely where the pest is not. Farmers are not failing to control this pest because they aren't trying hard enough. They are failing because the delivery method cannot physically reach the target.
๐๐ก๐ฒ ๐๐๐ฌ๐ญ๐ฌ ๐๐ข๐ค๐ ๐๐๐๐ ๐๐๐ค๐ ๐๐จ๐ฅ๐ โ ๐๐ง๐ ๐๐ก๐ฒ ๐๐ซ๐๐๐ค๐ข๐ง๐ ๐ญ๐ก๐ ๐๐ฒ๐๐ฅ๐ ๐๐๐ญ๐ญ๐๐ซ๐ฌ
It's worth asking a harder question here, because the answer changes how a farmer should think about the years ahead, not just this season. Why do pests like RSSI take hold so completely once they arrive, and what makes an outbreak like this worse rather than self-limiting?
Two mechanisms are well established in general pest-ecology and integrated pest management (IPM) literature, and they apply directly to sugarcane. First, monoculture removes the natural checks that keep any single pest population in balance. A widely cited South African study on sugarcane stalk borer found damage levels two to three times lower on small, diversified farms than on large commercial monocultures, because mixed cropping and marginal vegetation sustain a natural enemy community that a single-crop landscape simply cannot support [26]. Large, continuous stands of one crop are, structurally, an unbroken buffet with no predators seated at the table.
Second, and more directly relevant to how this crisis has been handled so far: heavy or repeated insecticide use can make outbreaks worse, not better, through a well-documented phenomenon called resurgence and secondary pest replacement. When a broad-spectrum insecticide kills a target pest, it also kills or repels the parasitoid wasps and predators that were quietly holding other insects below the level of economic damage. Once those natural enemies are gone, the pest population can rebound faster and to a higher level than before treatment, or a previously minor species can explode into the new primary problem [27][29][30][32]. This is not a hypothetical risk specific to RSSI โ a 2025 peer-reviewed study found that insecticide practice, more than any other factor tested, was the dominant driver of secondary pest outbreaks in a controlled cropping trial [31]. Repeated, inconsistent insecticide exposure is also the classic pathway to resistance development in the pest itself [27].
I want to be precise about what the evidence actually supports here, because it would be easy to overstate this. RSSI is an invasive species that arrived in the Philippines already established, most likely descended from populations that have existed for decades in Egypt and other African range countries [2][19]. There is no published study tracing RSSI's own evolutionary or resistance history to local Philippine farming practices โ whatever pressures shaped this insect happened elsewhere, over a longer timescale, and I have not found research specifically documenting that history. What the general IPM literature does establish, solidly, is the mechanism by which monoculture and heavy insecticide use make any pest outbreak worse once it arrives โ and that mechanism is exactly why breaking the cycle is part of the solution, not an afterthought to it.
Breaking the cycle means three concrete things in practice: protecting rather than incidentally destroying the natural enemies already present, such as the endoparasitoid wasps UPLB-NCPC has documented achieving 30 to 67 percent parasitism rates in Pampanga; using scouting-based thresholds rather than blanket, calendar-driven spraying, so chemical intervention happens only where and when it's actually warranted; and rotating control tactics โ biological, cultural, and chemical โ rather than leaning on one insecticide class repeatedly until resistance sets in [26][28][29]. This is precisely the logic behind SRA and UPLB-NCPC's own guidance to farmers not to spray out the natural parasitoid populations already suppressing RSSI in some fields, and it is the same logic underlying the good management practices below.
๐๐๐๐จ๐ฆ๐ฆ๐๐ง๐๐๐ ๐๐จ๐จ๐ ๐๐๐ง๐๐ ๐๐ฆ๐๐ง๐ญ ๐๐ซ๐๐๐ญ๐ข๐๐๐ฌ
Ahead of any spray program, chemical or biological, the Philippine Sugar Research Institute Foundation and SRA have laid out a set of foundational good management practices that cost nothing beyond labor and discipline, and that every grower in an affected or adjacent province should already be following [4][5][6][7]:
Inspect fields weekly, not occasionally. RSSI is difficult to catch early if fields aren't checked on a set schedule, and it appears first on the lower leaves near the base of the stalk โ exactly the zone growers are least likely to check during a casual walk-through [4][6].
Look specifically for the early signs: yellowing near the base of lower leaves, and any sticky, black mold-covered leaf surface [4][5]. Both precede visible pest buildup and give growers a head start before the infestation climbs into the upper canopy.
Physically remove and burn infested leaves as soon as they're found [4][5]. This is the single most immediate, zero-cost intervention available, and it directly reduces the local pest and honeydew/sooty-mold load before any spray program even begins.
Do not move planting material or farm equipment out of an infested field or barangay. Quarantine on cane points (patdan) is not a bureaucratic formality โ SRA has directly linked the pest's spread from Luzon to Negros to the uncontrolled transport of infested planting material [7], and the same risk applies to any inter-municipal or inter-island movement today.
Maintain balanced soil fertility and field sanitation rather than relying on fertilizer alone to push through pest pressure. A well-nourished stand of cane has more physiological reserve to withstand sap loss and mold-blocked photosynthesis, which matters directly to how a field recovers even after treatment begins.
Coordinate with SRA, PHILSURIN, and local government units before undertaking large-scale chemical spraying. Several of the insecticide active ingredients discussed in field advisories are not yet registered with the Fertilizer and Pesticide Authority for this specific use [12], and coordinated response avoids both regulatory exposure and wasted, poorly timed applications.
๐๐ก๐๐ซ๐ ๐ญ๐ก๐ ๐๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ฒ ๐๐ฌ ๐๐๐ญ๐ฎ๐๐ฅ๐ฅ๐ฒ ๐๐๐๐๐ข๐ง๐
To its credit, the SRA has recognized the coverage problem and is shifting its approach on three fronts, though it's worth being honest about how far along each one actually is.
Drone-based spraying is the most operationally mature response. SRA has conducted real aerial spraying missions โ including a documented operation covering 226.36 hectares at Hacienda Agho in La Castellana, Negros Occidental in June 2026 โ using drone downwash specifically to flip and agitate the leaves so insecticide reaches the undersurface where colonies live [13][14]. SRA officials have noted drones can cover roughly 50 hectares a day, reaching leaf undersides that ground equipment cannot [13].
Biological control through entomopathogenic fungi is promising but still developing, not yet a fully deployed solution. In 2025, SRA identified Metarhizium anisopliae and Beauveria bassiana โ naturally occurring fungi found in Capiz โ as candidates capable of penetrating the waxy shell and killing RSSI from within [15][16]. Independent in-vitro research published through the International Journal of Agriculture and Environmental Research has since confirmed M. anisopliae's pathogenicity against RSSI nymphs in laboratory +conditions, with concentrations of 1ร10โธ and 1ร10โน spores/mL producing 90โ91 percent mortality [18]. SRA itself has acknowledged, however, that biological control alone cannot immediately address an infestation already this advanced, particularly with harvest windows measured in months rather than years [17] โ a genuine breakthrough in the pipeline, not a complete substitute for other measures yet.
Quarantine on the movement of cane planting material is the third and arguably most important front, because SRA administrator Pablo Luis Azcona has publicly linked the pest's inter-island spread from Luzon to Negros directly to the uncontrolled transport of infested planting material and farm equipment [7]. Restricting that movement, and requiring verified, treated cane points before any inter-municipal or inter-island transfer, is the single most direct way to stop the next outbreak before it starts.
๐๐ก๐๐ญ ๐๐ก๐ข๐ฌ ๐๐๐๐ง๐ฌ ๐๐จ๐ซ ๐
๐๐ซ๐ฆ๐๐ซ๐ฌ ๐๐ข๐ ๐ก๐ญ ๐๐จ๐ฐ
If you are managing sugarcane land in an affected or adjacent province, the good management practices above come first, and an entomopathogenic fungal approach that can actually pe*****te the waxy shell where contact insecticides cannot come next.
This is precisely the biological-first direction the industry itself is now moving in โ and it is the space AA Biotek Enterprises has been working in through our RSSI-Tek bio-insecticide, formulated with the same two entomopathogenic fungi SRA identified as its own breakthrough candidates: Metarhizium anisopliae and Beauveria bassiana. This is not a coincidence of naming โ it reflects where the actual science has landed. Independent in-vitro research published through the International Journal of Agriculture and Environmental Research has confirmed M. anisopliae's pathogenicity specifically against Pulvinaria tenuivalvata nymphs, evaluating spore concentrations from 1ร10โถ to 1ร10โน spores/mL against a chemical insecticide control [18]. The mode of action is mechanical and enzymatic: spores adhere to the insect's waxy cuticle and use chitinase and protease enzymes to break through it โ physically bypassing the exact wax-shield defense that renders standard contact insecticides ineffective against mature RSSI, as this article opened by explaining. Where SRA's own Metarhizium/Beauveria work, sourced from a fungal strain discovered in Capiz, remains in mass-production and field-validation stages as of mid-2026 [15], AA Biotek's RSSI-Tek is already formulated and available โ a parallel line of development using the same validated biological agents.
RSSI-Tek is formulated as a wettable powder (1ร10โธโปโน CFU/g), applied through both manual knapsack spraying and drone application depending on the scale and density of the field. On smallholder plots and for hotspot follow-up, ground crews prepare and hand-spray the product with the nozzle deliberately angled upward into the underside of the canopy โ the same canopy-penetration problem this article opened with. On larger estate blocks with dense, tall canopy, drones take over: the same downwash effect SRA uses to flip sugarcane leaves for its own spraying program lets a single unit cover roughly 50 hectares a day, reaching underside colonies that ground equipment often can't. In practice, the two methods work best together โ drones for fast, broad-block coverage, manual crews for the hotspots and field edges a flight plan tends to miss โ cycled every 5 to 7 days during an active infestation and tapering to every 10 to 14 days once the pest is under control. It is registered and regulated under BPI oversight and is one part of an integrated approach; it is not a substitute for the good management practices above or for the entomological monitoring SRA and UPLB-NCPC are already doing in affected provinces. I want to be direct about that, because overstating what any single product can do is exactly the kind of shortcut this industry cannot afford right now. Farmers and estate managers looking to set up a proper spray program โ dosing by field condition, activation timing, and how to sequence manual and drone passes โ are welcome to reach out to AA Biotek directly; this is exactly the kind of field-specific planning that's worth a conversation rather than a caption.
๐ ๐๐ก๐ข๐ซ๐ ๐๐๐ฅ๐ข๐ฏ๐๐ซ๐ฒ ๐๐ฒ๐ฌ๐ญ๐๐ฆ ๐๐ฉ๐ญ๐ข๐จ๐ง ๐๐จ๐ซ๐ญ๐ก ๐๐๐ฌ๐ญ๐ข๐ง๐ โ ๐๐ข๐ญ๐ก ๐ ๐๐ฅ๐๐๐ซ ๐๐๐ฏ๐๐๐ญ
There is a third delivery method worth naming here, precisely because no one has published on it against RSSI, and that gap is itself worth flagging to the industry rather than quietly ignoring. Ground rigs with a spray boom mounted and centered on the inter-row space โ the gap between planted rows, rather than above the canopy โ have already been used in real, peer-reviewed sugarcane field trials, though for w**d control rather than insect pests. A 2025 study published in Computers and Electronics in Agriculture by researchers from James Cook University, AutoWeed Pty Ltd, and Sugar Research Australia retrofitted tractor-towed and self-propelled boom sprayers with detection units positioned between sugarcane row centers, giving nozzles a clear line of sight underneath the leaf canopy from ground level; the same research team had separately developed and field-tested an ATV/UTV-mounted version of this spray-boom system for w**d control in Australian rangeland pastures [33]. Separately, extension research on air-assisted ground sprayers has found that injecting the spray into a directed air stream, rather than relying on gravity and pressure alone, measurably improves how much product reaches the underside of leaves compared to conventional boom spraying [34]. Cotton growers facing whitefly โ a sap-sucking pest that, like RSSI, colonizes the underside of lower leaves โ have already developed purpose-built high-clearance and air-assisted ground rigs for exactly this reason, and that same equipment class is explicitly usable in sugarcane [35].
Put together, the mechanical logic is sound: a ground rig โ whether ATV, kuliglig, tractor-towed, or self-propelled โ running between rows, with nozzles angled sideways or upward or both into the canopy rather than sprayed down onto it, should in principle reach underside colonies that overhead boom sprayers cannot. But I want to be precise rather than promotional about this. I found no published study โ not from SRA, not from PHILSURIN, not from any of the international literature on this pest โ testing an inter-row-positioned ground sprayer specifically against RSSI or any comparable scale insect. What exists is a real, peer-reviewed precedent for the equipment concept in sugarcane (for w**ds) and separate evidence that the underlying air-assisted, under-canopy delivery principle improves leaf-underside coverage in other crops and pests. That is a plausible option worth a proper field trial, not a proven one, and any grower or researcher considering it should treat it exactly that way.
There's also a practical argument for this configuration that sits outside the biology, and it's worth stating plainly: cost and speed of access. A drone sprayer is a significant capital purchase, and for the great majority of Philippine sugarcane smallholders it will remain something contracted from a service provider rather than something the farm itself owns. A mid-row ground rig, by contrast, is largely a conversion of equipment many farms already have. Tractors and kuligligs are common on-farm assets; turning one into a mid-row sprayer means adding a boom, nozzles, a tank, and a way to direct the spray toward the base of the plant โ not acquiring an entirely new category of aerial equipment. One configuration worth testing in this vein: a couple of 200-liter drums or one-cubic-meter IBC tote mounted in the bed of, or towed behind, an ATV, kuliglig, or tractor as the spray reservoir, paired with a small generator or an inverter-type silent backup power unit to run the pump. Assembled largely from parts already on hand, a rig like this directs spray at the base of the plant and the underside of the lower leaves โ the zone this article has already identified as where RSSI colonies concentrate and where standard spraying fails to reach.
Physical access supports this rather than working against it. Philippine sugarcane is generally planted with row spacing of about 1.3 to 1.5 meters โ comfortably wide enough for a small tractor, ATV, or kuliglig to travel down the inter-row middle. That spacing is fixed at planting and does not narrow as the plant grows, so the same access holds even in the later stages of growth, once the canopy above has closed and the pest pressure and yield loss RSSI causes are typically at their worst โ the ground-level lane the equipment travels through is unaffected by how tall or dense the crop has become overhead. It is worth being clear about what that does and does not establish: the row spacing itself is a well-established planting standard, but whether a small ground unit can actually maneuver a full spray cycle through a mature, later-stage canopy without leaf damage or visibility issues has not been tested for RSSI control specifically, and belongs on the same list of things a pilot run needs to confirm rather than assume.
The case for this configuration is really about access and deployment speed, not necessarily hectares covered per day. SRA's own drone operations remain the faster option where a unit and a licensed operator are actually available, covering roughly 50 hectares a day, as noted above. But availability, not throughput, is the binding constraint for most growers: not every farm or cooperative has a drone on hand, a trained operator, or the budget to contract one during the narrow window an infestation demands. A converted tractor or kuliglig sprayer is something a grower can put to work the same week, using equipment and labor already on the farm, without waiting on a service provider's schedule. That is a meaningfully different kind of advantage โ getting treatment onto more farms sooner โ and it should be tested and described as exactly that, rather than framed as out-covering a drone on a per-hectare basis.
A single ground unit will likely treat less area per day than a drone. That gap has not been measured for this specific configuration and should not be assumed with a specific figure attached โ the actual number will depend on field layout, unit speed, and tank refill cycles, and is a question for a pilot run, not a starting assumption. What a ground rig may gain in exchange is control over exactly where the spray lands. A drone relies on downwash turbulence to flip leaves and push insecticide toward the underside โ an indirect mechanism, however well it has worked in SRA's own operations. A ground-mounted boom or nozzle set, by contrast, can be positioned and angled deliberately at the base of the plant and the underside of the lower leaves โ the exact zone this article has already identified as where RSSI colonies concentrate โ rather than depending on air movement to get there. Targeted placement versus turbulence-driven dispersal is arguably the more meaningful comparison between the two methods, and it is the piece most worth testing directly: whether deliberate, ground-level aim closes enough of any coverage gap with a real gain in how much of the applied product actually lands on the pest rather than elsewhere on the plant. This is a logical inference from how each method physically works โ direct aim versus turbulence-driven dispersal โ not a tested result. As with the inter-row boom configuration and the IBC-and-generator setup described above, none of this โ the coverage gap, the targeting advantage, or the trade-off between them โ has been tested against RSSI or published anywhere in the literature; it is my hypothesis worth a proper field trial, not yet a proven result.
The RSSI crisis is a preview of something Philippine agriculture will face more often as global trade and travel move plant material across borders faster than our regulatory and biological safeguards can adapt. Egypt and the African range countries have lived with this pest for decades and have converged on integrated, monitoring-first management rather than any single silver bullet. We can either learn that lesson on our own terms now, or the hard way, later.
๐ ๐๐ฐ๐จ-๐๐ซ๐จ๐ง๐ ๐๐, ๐๐จ๐ง-๐๐ก๐๐ฆ๐ข๐๐๐ฅ ๐๐ฉ๐ฉ๐ซ๐จ๐๐๐ก
This is where AA Biotek's actual solution set comes together, and it's worth stating plainly rather than leaving it implied: killing the pest and strengthening the plant are two different jobs, and a serious non-chemical IPM program needs both. RSSI-Tek is the direct-kill front โ the entomopathogenic fungal action described above, delivered through manual and drone spraying, that physically breaches the RSSI wax shield. The second front is the plant itself: giving sugarcane more capacity to withstand and recover from the sap loss and sooty-mold damage RSSI causes while a fungal treatment program takes effect. Soil-applied beneficial microorganisms play a real, if more indirect, role here. Beneficial rhizosphere microbes are documented in the peer-reviewed literature to trigger induced systemic resistance (ISR) in plants โ a hormone-mediated priming effect shown in published research to reduce reproduction and fitness of phloem-feeding, sap-sucking insects in other crop systems [22][23]. Separately, and more straightforwardly, stronger root systems and better nutrient uptake simply give the plant deeper physiological reserves to draw on while it's under attack. This is not a claim that soil probiotics kill RSSI directly โ they don't, and no one should market them that way. It's the resilience half of a two-pronged, entirely biological program: no synthetic chemical inputs on either front, positioned squarely within an integrated pest management framework rather than as a stand-alone silver bullet. For growers building that kind of program โ pairing direct fungal control with soil and plant-nutrition support, alongside the good management practices outlined above โ this is exactly the conversation AA Biotek is set up to have.
Edwin B. Espiloy is the Founding President and CEO of AA Biotek Enterprises OPC, a Philippine regenerative biotechnology company. He is a UPLB alumnus with four decades of experience in Philippine agriculture.
๐๐๐๐ข๐ ๐๐จ๐ง๐ญ๐๐๐ญ
AA Biotek Enterprises OPC Main Office and Manufacturing Laboratory, 2F Espiloy Commercial Bldg., 111 corner Don Joaquin St., Brgy. 3 San Fernando City, La Union 2500, Region 1, Philippines Phone: +63 72-205-1704
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References:
1. NCPC Quick Response Team. (2024). NCPC Quick Response Team investigates red-striped soft scale, a newly emerging insect pest in sugarcane in the Philippines. University of the Philippines Los Baรฑos National Crop Protection Center. https://ncpc.cafs.uplb.edu.ph/news/ncpc-quick-response-team-investigates-red-striped-soft-scale-a-newly-emerging-insect-pest-in-sugarcane-in-the-philippines/
2. Guerrero, M.S., Candano, R.N., Barbecho, N.M., et al. (2024). Characterization of Pulvinaria tenuivalvata (Newstead) (Hemiptera: Cocomorpha: Coccidae), its damage, endoparasitoid, and bridging hosts, as a new and emerging pest of sugarcane in Luzon Island, Philippines. ISSAAS Journal.http://issaasphil.org/wp-content/uploads/2024/06/8.-Guerrero-et-al.-2024.-Characterization-of-Pulvinaria-tenuivalvata-FINAL.pdf
3. Guerrero, M.S., et al. (2026). Biology of the red-striped soft scale insect. ISSAAS Journal.https://issaasphil.org/wp-content/uploads/2026/05/11.-Guerrero-et-al.-2026-Biology-of-the-red-striped-soft-scale-insect-FINAL.pdf
4. PHILSURIN Advisory. (2025). Protect Your Sugarcane from the Red-Striped Soft Scale Insect (RSSI). Philippine Sugar Research Institute Foundation. https://philsurin.org/2025/06/15/philsurin-advisory-protect-your-sugarcane-from-the-red-striped-soft-scale-insect-rssi/
5. Digicast Negros. (2025, June 18). PHILSURIN issues advisory vs. new threat to sugarcane. https://digicastnegros.com/philsurin-issues-advisory-vs-new-threat-to-sugarcane/
6. Watchmen Daily Journal. (2025, June 20). Look for signs: RSSI can cause severe crop damage, farmers warned. https://watchmendailyjournal.com/2025/06/20/look-for-signs-rssi-can-cause-severe-crop-damage-farmers-warned/
7. Philippine News Agency. (2025, May 26). Farmers urged to adopt management plan, preventive measures vs. RSSI. https://www.pna.gov.ph/articles/1250825
8. Rappler. (2025, June 4). Sugar farmers face new crisis as pest invades Negros Occidental plantations. https://www.rappler.com/philippines/visayas/negros-occidental-farmers-sugar-pest-infestation-crisis/
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10. Philippine Daily Inquirer. (2026, June 19). Pests ravage sugarcane plantations in Bukidnon. https://newsinfo.inquirer.net/2248735/pests-ravage-sugarcane-plantations-in-bukidnon
11. Philippine Daily Inquirer. Pest attack in Negros sugar farms worsens. https://newsinfo.inquirer.net/2256252/pest-attack-in-negros-sugar-farms-worsens
12. The Manila Times. (2026, July 24). RSSI hits 7k hectares of sugarcane fields. https://www.manilatimes.net/2026/07/24/regions/rssi-hits-7k-hectares-of-sugarcane-fields/2390199
13. BusinessWorld Online. (2026, June 15). SRA uses drones vs sugarcane insects in Negros Occidental. https://bworldonline.com/the-nation/2026/06/15/756840/sra-uses-drones-vs-sugarcane-insects-in-negros-occidental/
14. The Manila Times. (2026, June 17). SRA uses drones to combat sugarcane pests. https://www.manilatimes.net/2026/06/17/regions/sra-uses-drones-to-combat-sugarcane-pests/2366882
15. Philippine News Agency. (2025, July 14). SRA eyes mass production of fungi vs. RSSI infestation. https://www.pna.gov.ph/articles/1254239
16. Philippine Daily Inquirer. (2025, July 16). SRA breakthrough: Fungus seen to end sugar pest attacks. https://newsinfo.inquirer.net/2082509/sra-breakthrough-fungus-seen-to-end-sugar-pest-attacks
17. Panay News. SRA says 'go-green' strategy vs RSSI already underway, calls for immediate action. https://www.panaynews.net/sra-says-go-green-strategy-vs-rssi-already-underway-calls-for-immediate-action/
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19. Abdel-Razak, S.I., Matile-Ferrero, D., & Soulier-Perkins, A. (2017). Redescription of the red-striped soft scale, Pulvinaria tenuivalvata (Newstead), with a new synonymy (Hemiptera, Coccomorpha, Coccidae). ZooKeys, 647, 101โ107. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5345351/
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21. Hebrew University of Jerusalem, Middle East Pest and Beneficial Database. Pulvinaria tenuivalvata โ bibliography of Egyptian control and parasitism studies. http://www.agri.huji.ac.il/mepests/pest/Pulvinaria_tenuivalvata/
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25. Industry Strategic Science and Technology Plans (ISP) Platform, DOST-PCAARRD. (2025, June 5). Philippine Sugar Stable Prices Offer Relief; Output Exceeds Targets, But Pest Threat and Unauthorized Sugar Imports Pose Risks. https://ispweb.pcaarrd.dost.gov.ph/philippine-sugar-stable-prices-offer-relief-output-exceeds-targets-but-pest-threat-and-unauthorized-sugar-imports-pose-risks/
26. Goebel, F.-R., & Nikpay, A. (2017). Integrated pest management in sugarcane cropping systems. In C. Rapisarda & G.E. Massimino-Cocuzza (Eds.), Integrated Pest Management in Tropical Regions (pp. 113โ133). CABI, Wallingford. ISBN 978-1-78064-800-2.
27. Dwivedi, S.K., & Singh, G. (2017). Pest outbreak, insecticidal resistance in agricultural pests / Resurgence and Pest Outbreak of Destructive Pest by Mismanagement Tactics. International Journal of Scientific & Engineering Research, 8(3). https://www.researchgate.net/publication/373806899_Resurgence_and_Pest_outbreak_of_Destructive_Pest_by_Mismanagement_Tactics
28. Agriculture Institute. Understanding Pest Epidemics: Causes and Impacts. https://agriculture.institute/agriculture-fundamentals/understanding-pest-epidemics-causes-impacts/
29. A Review of Resurgence and Replacement Causing Pest Outbreaks in IPM. Springer Nature Link.https://link.springer.com/content/pdf/10.1007/978-1-4020-6061-8_2.pdf
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31. Mateos-Fierro, Z., Leach, A., & Kaplan, I. (2025). Insecticides outweigh rye cover crop in triggering secondary pest outbreaks. Pest Management Science. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12618915/
32. US EPA, Watershed Academy Web. Agricultural Management Practices for Water Quality Protection (resurgence, replacement, and cultural/IPM control methods). https://cfpub.epa.gov/watertrain/moduleFrame.cfm?parent_object_id=1418
33. Rahimi Azghadi, M., Olsen, A., Wood, J., Saleh, A., Calvert, B., Granshaw, T., Fillols, E., & Philippa, B. (2025). Precision robotic spot-spraying: Reducing herbicide use and enhancing environmental outcomes in sugarcane. Computers and Electronics in Agriculture, 235, 110365.https://researchonline.jcu.edu.au/89739/1/89739.pdf
34. North Dakota State University Extension. Spray Equipment and Calibration (air-assist sprayer underside-of-leaf coverage improvement). https://www.ndsu.edu/agriculture/extension/publications/spray-equipment-and-calibration
35. Machinery for Plant Protection in Cotton Crop. IntechOpen (high-clearance and air-assisted ground rigs for underside-of-leaf whitefly control, noted as usable in sugarcane). https://www.intechopen.com/chapters/81736
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