Legumes and grasses in dryland cropping systems in the northern and central Great Plains : a review of the literature /

Includes bibliographical references (p. 60-64).

Nitrogen and carbon changes in Great Plains soils as influenced by cropping and soil treatments /

Chiefly tables.

Effects of cereal species, legume species, and nitrogen on no-till winter wheat and rye grown with perennial forage legume living mulches /

Thesis (Ph. D.)--Cornell University, May, 1988.

Tillage options for conservation farmers.

Shipping list no.: 89-80-P.