IPM Return on Investment Calculator

Navel Orangeworm is the #1 pest of California tree nuts. See whether your IPM practice pays for itself.

Net return – per acre, after IPM cost

ROI–

From less damage–

From quality bonus–

Equation

Almonds: Value = Price × Yield × (1 − 2 × Rejects) + Yield × (1 − 2 × Rejects) × Quality Bonus

Pistachios: Value = Price × Yield × (1 − Rejects) + 0.8 × Yield × (1 − Rejects) × Quality Bonus

Net return = (Value with IPM − Value without IPM) − IPM cost. ROI = Net return ÷ IPM cost.

Want processor quality schedules and multiple varieties? Run a detailed estimate ↓

Detailed Estimate

The model uses academic research on each IPM practice to estimate the reduction in NOW damage, then applies your processor's quality schedule to estimate the dollar value of that reduction.

1 Orchard, practice & processor

Orchard name Block name Block acres Crop IPM practice Processor

Some processors pay higher base prices while others pay higher quality incentives — this tool is not meant to compare processors.

2 Varieties

3 IPM details

Estimated damage reduction % Current mummies/tree Goal mummies/tree Optimal harvest date Actual harvest date Cost of practice $/acre

Variety	Initial damage	Estimated damage with

4 Processor quality factors

Blue Diamond 2026 Crop Delivery Guide. Choose where you expect each variety to grade. Reject premiums use the damage from sections 2 and 3, so they change with IPM.

Contract volume total good meat lbs, all varieties

Net return / acre

ROI

Block total

Per acre

Value without IPM
Value with IPM
from less damage (more saleable lbs)
from quality bonus change
Cost of practice
Net return

Where the value comes from

By variety

Variety	Rejects	Grade	Net quality adj. $/lb	Value / acre	Change / acre

Estimates only. Quality schedules applied from the processor’s published guide (Blue Diamond: 2026 Crop Delivery Guide). Actual payments depend on grading of each delivery.

How it works

The 5 pillars of NOW IPM

Winter sanitation
Mating disruption
Timely harvest
Monitoring
Chemical application

Each practice is modeled individually from published research.

Research behind the estimates

Mating disruption: 50–80% less damage (Haviland 2020). Default 50%.
Winter sanitation: mummies/tree vs. damage across ~2,000 blocks (Higbee 2009).
Timely harvest: +0.5–1.5% damage per day late (Curtis 1984). Model uses 0.5%/day.

Equations

Almonds:
Price·Yield·(1−2R) + Yield·(1−2R)·QB

Pistachios:
Price·Yield·(1−R) + 0.8·Yield·(1−R)·QB

R = rejects, QB = processor quality bonus ($/lb). Quality schedules are applied on the server and are not published on this page.