Publication Date

1989

Description

The Conservation Reserve Program (CRP), a federal program with the objective to reduce surplus feed grain pro­duction in the United States by idling marginal cropland, has already idled nearly 12 million hectares with a target of 32 mil­lion hectares. Idled land must be seeded to perennial grasses to help prevent soil erosion. The required grass seeding has caused the cost of grass seed to increase several fold ; therefore, estab­lishment cost could be reduced considerably if seeding rates could be reduced from the present recommended 215 to 323 seeds/m2 (Dodds, 1981). Recommended seeding rates were developed from research on establishment of forage crops (Metcalfe, 1973), which required productivity as soon as poss­ible after seeding for economic reasons. Land in CRP does not need to have maximum productivity in the first year, only a grass stand that will protect against erosion and compete with weeds. Therefore, our objective was to determine what plant density provides near maximum cover when first-year pro­ductivity was not required.

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Grass Plan Density for Adequate Conservation Reserve Program Stands

The Conservation Reserve Program (CRP), a federal program with the objective to reduce surplus feed grain pro­duction in the United States by idling marginal cropland, has already idled nearly 12 million hectares with a target of 32 mil­lion hectares. Idled land must be seeded to perennial grasses to help prevent soil erosion. The required grass seeding has caused the cost of grass seed to increase several fold ; therefore, estab­lishment cost could be reduced considerably if seeding rates could be reduced from the present recommended 215 to 323 seeds/m2 (Dodds, 1981). Recommended seeding rates were developed from research on establishment of forage crops (Metcalfe, 1973), which required productivity as soon as poss­ible after seeding for economic reasons. Land in CRP does not need to have maximum productivity in the first year, only a grass stand that will protect against erosion and compete with weeds. Therefore, our objective was to determine what plant density provides near maximum cover when first-year pro­ductivity was not required.