9 pages matching insects pollinate in this book
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acre acreage Agricultural alfalfa alfalfa seed alsike aphid areas beans bees bluegrass breeder breeding buds cause cells cereal certified seed chemical chromosomes cleaning color commercial corn cotton curly top damage detasseling developed disease dormant duced embryo endosperm Experiment Station farm farmers Federal Seed Act fertilization flower forage foundation seed fruit fungi fungicide genes genetic germination grain grasses grow growers grown growth harvest herbicides hilum hybrid seed increase insects kinds of seeds Ladino legumes live seed mature ment method moisture content organisms ovule parent peas percent percentage pine plants pollen pollen tube pounds produce propagated pure seed red clover removed require root ryegrass sample seed crops seed fields seed production seedborne seedcoat seedlings seedsmen soil sorghum soybeans species sporophyte stem storage sugarbeets temperature thiram threshing tion trees ture usually varieties vegetable seeds vetch virus weed seeds wheat yield