Discover agricultural resources, county by county.
Independent educational guides to comparing seed varieties, designing replicated on-farm trials, measuring seed quality, and evaluating reliable crop research across states and counties. No invented yield results or location-specific trial claims.
Compare measured variety yieldsFind your stateExplore categoriesView XML sitemapBrowse all states, D.C. and U.S. territories
Alabama67 county and area pagesAlaska30 county and area pagesArizona15 county and area pagesArkansas75 county and area pagesCalifornia58 county and area pagesColorado64 county and area pagesConnecticut8 county and area pagesDelaware3 county and area pagesDistrict of Columbia1 county and area pagesFlorida67 county and area pagesGeorgia159 county and area pagesHawaii5 county and area pagesIdaho44 county and area pagesIllinois102 county and area pagesIndiana92 county and area pagesIowa99 county and area pagesKansas105 county and area pagesKentucky120 county and area pagesLouisiana64 county and area pagesMaine16 county and area pagesMaryland24 county and area pagesMassachusetts14 county and area pagesMichigan83 county and area pagesMinnesota87 county and area pagesMississippi82 county and area pagesMissouri115 county and area pagesMontana56 county and area pagesNebraska93 county and area pagesNevada17 county and area pagesNew Hampshire10 county and area pagesNew Jersey21 county and area pagesNew Mexico33 county and area pagesNew York62 county and area pagesNorth Carolina100 county and area pagesNorth Dakota53 county and area pagesOhio88 county and area pagesOklahoma77 county and area pagesOregon36 county and area pagesPennsylvania67 county and area pagesRhode Island5 county and area pagesSouth Carolina46 county and area pagesSouth Dakota66 county and area pagesTennessee95 county and area pagesTexas254 county and area pagesUtah29 county and area pagesVermont14 county and area pagesVirginia134 county and area pagesWashington39 county and area pagesWest Virginia55 county and area pagesWisconsin72 county and area pagesWyoming23 county and area pagesPuerto Rico78 county and area pagesAmerican Samoa5 county and area pagesGuam1 county and area pagesNorthern Mariana Islands4 county and area pagesU.S. Virgin Islands3 county and area pages
Browse by category
Corn Hybrid Trialshybrid maturity, yield, standability and plant populationSoybean Variety Trialsmaturity groups, seed traits and disease toleranceWheat Variety Trialswinter and spring wheat, test weights and disease ratingsCotton Variety Trialscotton maturity, lint yield and fiber qualitySorghum Hybrid Trialsgrain sorghum yield, drought adaptation and standabilityRice Variety Trialsrice cultivars, yield, milling quality and water needsCanola and Oilseed Trialscanola, sunflower, peanut and other oilseed varietiesForage and Pasture Seed Trialsalfalfa, grasses, cover crops and forage mixesSpecialty Crop Trialsvegetable, fruit and market garden variety evaluationsTrial Design and Replicationrandomization, controls, plot design and field measurementSeed Quality and Germinationseed lot quality, emergence, vigor and planting rates4-H and FFA Seed Scienceschool research projects, crop judging and SAE records
Free planning and record-keeping guides
On-Farm Variety Trial Planning WorksheetChecklist and simple field worksheetRandomized Complete Block Trial GuideChecklist and simple field worksheetField Trial Plot Map TemplateChecklist and simple field worksheetReplicated Trial Data SheetChecklist and simple field worksheetCorn Hybrid Yield ComparisonChecklist and simple field worksheetSoybean Variety Yield ComparisonChecklist and simple field worksheetWheat Cultivar ComparisonChecklist and simple field worksheetCotton Variety and Fiber Quality RecordChecklist and simple field worksheetGrain Sorghum Hybrid Trial RecordChecklist and simple field worksheetRice Cultivar Trial PlanChecklist and simple field worksheetCanola Variety Trial GuideChecklist and simple field worksheetAlfalfa Variety Persistence RecordChecklist and simple field worksheet
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