The ... Yearbook of AgricultureU.S. Department of Agriculture, 1986 - Agriculture |
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acid activities agri AGRICOLA database agricul Agricultural Research animals antigen application areas assessment auxin bacteria bacterium biocontrol biological biotechnology cells Center changes chemical chromosome cloned crease crop culture diet dietary disc disease duced economic effects embryo environment environmental enzyme erosion farm farmers Federal fermentation fiber fire forest resources future genes genetic engineering growth Guidelines hormones host hybridomas identified immune impact improved increase industry insect insecticides intake interactions land levels lymphocytes major ment methods micro-organisms microbes molecules monoclonal antibodies National neurohormone nitrogen nitrogen fixation nutrients nutrition organisms pathogen percent pest pesticides pheromone plant plasmid potential programs protein rDNA reduce regulation resistance response result scientists Service soil specific sperm strains studies techniques timber tion tional tissue traits transposable element trees ture United USDA vaccines virus wildlife wood