Scout the field on a fixed schedule and spray only once a pest count crosses an economic threshold — resistant varieties, natural enemies and traps come first, chemical spray is the last resort, not the first.
The quick decision panel — everything you need before reading a single paragraph further.
What actually changes on your farm once this is in place.
Spraying only past the economic threshold typically cuts pesticide cost ₹1,500–₹3,000/ha.
Preserves natural predator populations that would otherwise be wiped out by routine spraying.
Slows the build-up of pesticide resistance that comes from spraying on a fixed calendar regardless of need.
Fewer spray rounds means less diesel or battery use running the sprayer.
Chemical spray is targeted at the actual problem instead of applied as insurance every few days.
Catching a genuine outbreak on time, rather than missing it between fixed spray dates, protects yield better.
The practice broken into the steps you will actually follow, in order.
Walk the field twice a week, checking a set number of plants per acre for pest presence and damage.
Compare the pest count to the published threshold for that pest and crop — not a gut feeling.
Resistant varieties, trap crops and natural enemies are the first line, before any chemical is considered.
A targeted, selective spray is applied only once the count genuinely crosses the threshold.
If spraying is needed, rotate the chemical group used to slow resistance build-up.
An honest read before you spend a rupee or an hour on it.
This technique against conventional practice, head to head, per acre.
Pesticide (per season)
Spray labour
Scouting time (new cost)
Conventional total
₹8,900/ha
This technique, total
₹6,300/ha
A net saving of roughly ₹2,600/ha even after counting the new scouting time cost, mainly from cutting 30–50% of the spray rounds a calendar-based schedule would have used.
What farmers already using this technique typically measure.
30–50%
Spray Rounds Cut
₹1,500–₹3,000/ha
Pesticide Cost Saved
Measurably higher
Natural Enemy Population
Held steady or improved
Yield
Where this technique earns its keep the fastest.
Where this is already common field practice, not a pilot.
Commonly practised here
What you need to run this — most is available on hire through a Custom Hiring Centre.
Attract and count male moths of a target pest, giving an early population read before damage shows.
Approx. cost: ₹50–₹150 per trap
For the targeted, threshold-based spray when it is genuinely needed.
What goes wrong most often, and the fix, before it costs you a season.
Where this technique sits in the crop cycle, start to harvest.
Sanitise the field of previous crop debris that can harbour overwintering pests.
Choose a pest-resistant variety where one is available for your crop.
Scouting starts here on a fixed twice-weekly schedule — this is the stage most sprays are wasted on a count that never crossed the threshold.
This technique matters most here
Pest pressure often peaks around flowering — scouting frequency and vigilance should not drop here.
Log which pests crossed threshold and when, to refine next season's scouting plan.
The field issues that come up most, and how to stay ahead of them.
The numbers that decide whether this pays for itself, and how soon.
Initial Investment
₹500–₹1,500/ha for pheromone traps and scouting setup
Additional Income
Yield protection from timely, threshold-based intervention
Estimated Savings
₹1,500–₹3,000/ha in pesticide cost
ROI
100–150% against the pesticide saving alone
Payback Period
Same season
The schemes that fund the machinery and inputs behind this technique.
Run the real numbers on your own field with these calculators.
IPM vs calendar-based spraying, side by side on your own numbers.
Read guideWeigh scouting time and trap cost against the pesticide savings IPM typically brings.
Read guideSee which crop stages carry the highest pest risk so you can time scouting accordingly.
Read guideLong-form reading that goes deeper on this technique and what sits beside it.
IPM is scouting the field on a fixed schedule and spraying only once a pest count crosses a published economic threshold, using resistant varieties, natural enemies and traps first — chemical spray is the last resort, not the first response.
Typically ₹1,500–₹3,000 per hectare, from cutting 30–50% of the spray rounds a fixed calendar schedule would have used, since sprays only happen when the pest count genuinely crosses the threshold.
It is the pest population level at which the cost of the damage the pest would cause exceeds the cost of spraying to control it — below that count, spraying costs more than the damage it prevents.
Twice a week during the crop's high-risk vegetative and flowering stages is the standard recommendation, tightening to every 2–3 days during known high-risk weather windows.
No — it typically protects yield as well as or better than calendar-based spraying, because a genuine outbreak caught through scouting is addressed promptly, rather than being missed between fixed spray dates.
Mainly pheromone traps for early pest detection and a standard sprayer for the targeted sprays IPM does still use — no major new machinery investment is required.
Yes — biological control and trap crops are both cultural and biological tools that sit inside the IPM framework, used before chemical spray is considered.
Yes — it needs time for scouting more than money, which makes it accessible to smallholders, though it does require the labour or personal time to walk the field on a regular schedule.
The FAQs above cover the common questions. For a choice tuned to your exact soil, crop and holding size, your nearest Krishi Vigyan Kendra is the authoritative next step.
