19thcentury africa agriculturaldiseases agriculturalproduce agriculture agriculturists analysesensorielle animals arboristmerchandisingroot biography biology biotechnology botany businessfigures climate congresses congrès cookbooks cooking cookingbyingredient cookingeducation counting crafts cropmanagement crops dieting diets diseases drink farming fiction fitness flowers food foreignsubstances fruit gardeners gardening gemüse general genetics grains health historicalfigures historyofbiology hobbies horticulturists labor legumes lifesciences légumes miscellaneous miscellaneousscience nature obst parasites peoples pests physiology pioneers places plants quality qualitätskontrolle qualité ranching reference reproduction seasons selfservice sensoryevaluation soilmanagementinagriculture soils theoldwest travel treesinenvironmentalscience unitedstates vegetablegardening vegetables weather weightloss wheats wine