NASA POWER
Rain, temperature and root-zone soil wetness. FarmPartner derives evaporation demand (Hargreaves ET₀), frost dates, growing degree days, heat-stress days and heavy-rain days.
Climate fit of every rotation, frost & heat alerts
● DATA & SCIENCE · WHERE EVERY NUMBER COMES FROM
Every answer has a source.
FarmPartner reads five NASA missions, USDA field maps, global open data, peer-reviewed research and a library of farm handbooks for your exact field — and tells you where each number came from, what it can't see, and what to check locally.
- 5NASA missions & models
- 2USDA field datasets
- 6Global open data services
- 3,663Field trials (meta-analysis)
- 22Long-term rotation experiments
- 2,991Handbook passages, cited by page
01 ·
NASA Earth observation
Satellites and models over 20 years — the climate, water and vegetation of the field.
MODIS NDVI · MOD13Q1
How green the field is through the year: the months the soil lies bare and how vigorous the crop looks.
Bare-soil months → the cover-crop window
SMAP L4 soil moisture
Root-zone and surface soil moisture now versus earlier months: “25% water by volume, up from 18% in July”.
Should-I-water advice
ECOSTRESS ESI
Actual vs potential evapotranspiration: whether the crop on this field is short of water, pass by pass.
Field-scale crop water stress
GRACE / GRACE-FO
Trend of total water storage — groundwater included — in inches per year. Over the Ogallala it is falling.
Aquifer risk for thirsty, irrigated rotations
02 ·
Field & farm maps
What was grown on this exact field, and the soil under it — USDA, U.S. only.
Cropland Data Layer
The crop on the pixel each year — wheat, sorghum, fallow… — and land cover such as water or towns.
Detects today's rotation without a form; rejects pins on water or towns
SSURGO soil survey
Organic matter, texture, slope, erodibility (K factor) and drainage of the field's soil.
Erosion risk and soil-health scores
03 ·
Global open data
Forecasts, places and what each country grows — so it works far beyond Kansas.
FAOSTAT crops
Harvested area and yield of each crop, country by country.
Main crops shown outside the U.S.; the search only suggests crops the country grows
Open-Meteo
7-day rain, temperature and ET₀; elevation (0.0 m means open sea); town names to coordinates.
Watering, frost & heat; “I live near Bilbao”
GeoNames · Census · Zippopotam
Pin → country offline, county names, postal codes in the farmer's country.
Location from a pin, a link, coordinates or a postcode
04 ·
Research & experiments
Peer-reviewed evidence and decades of field trials behind each suggestion.
Crop-rotation meta-analysis
After a legume the next crop yields ~23% more, ~16% after another crop; legume rotations cut corn and wheat N fertilizer by 41–46%.
📚 Expected yield gain of every option
DRIVES long-term experiments
Rotations run for decades at research stations — corn–soy–wheat with rye or clover, alfalfa, small grains.
✅ “Tested since 1981 at Lincoln, NE”
Agronomy library
Managing Cover Crops Profitably, Building Soils for Better Crops, Crop Rotation on Organic Farms and more.
Practical how-to answers: cover crops, soil, pests
05 ·
AI that cites, not invents
Language models understand the farmer; the numbers always come from the data above.
Claude Opus 5.5
Reads the question, calls FarmPartner's tools (field data, comparisons, library) and explains in plain words. It never makes up a number.
Every free-text answer, photos of crops
Claude Haiku 5.5 + web search
Translates the scripted messages into the farmer's language; searches the web only for what the data can't cover, with sources.
20+ languages, Basque included
Google Speech-to-Text
Turns WhatsApp voice notes into text in English, Spanish, Basque, Catalan and more.
Farmers can just talk
How a number reaches the farmer
- 1 · Pin
A pin, a Maps link, coordinates, a postcode or a town name.
- 2 · Fetch · ~30 s
All sources in parallel; slow satellites (SMAP, ECOSTRESS) arrive minutes later.
- 3 · Derive
Only derived features are stored — rain vs ET₀, bare months, frost dates — never raw rasters.
- 4 · Score
Deterministic, explainable scores for today's rotation and 2–3-year alternatives found by search.
- 5 · Explain
Why, evidence with its source, benefits, gaps and risks — in the farmer's language.
■ WHAT THE DATA CAN'T SEE — SAID OUT LOUD IN THE APP, TOO
- NASA POWER is a ~50 km grid, SMAP 9 km and GRACE ~300 km: regional signals, not your field's corner.
- Crop maps and soil survey are U.S.-only; elsewhere the farmer types the crops and FAOSTAT guides the search.
- Crop traits and scores are approximations from public guidance — they need an agronomist's review.
- New combinations from the search are less proven: try them on part of a field first.