Thesis - Open Access
Master of Science (MS)
The soils of South Dakota are generally very fertile in their virgin condition. Through the years of cropping this fertility has been decropped through crop removal, soil erosion and other factors, until at the present time lack of soil fertility is showing up more and more as a limiting factor in crop growth in South Dakota. Fertility was thought to be adequate to support maximum production when moisture was plentiful. The development of new crop varieties which possess increased drought resistance and other favorable characteristics and also the continued decline of the soil fertility have made farmers and research men turn to fertilizer and other soil improving practices to insure maximum production in this state. In view of these conditions this study is concerned with the effects of fertilizers on the growth of small grains in their major production areas of South Dakota. Fields, plant composition, and moisture relations were considered in this study. In this work, phosphorus availability and its effects in yield and plant composition was studied on different crops grown in the surface and subsurface of a major South Dakota soil type.
Library of Congress Subject Headings
Soils -- South Dakota
Includes bibliographical references
Number of Pages
South Dakota State University
No Copyright - Non-Commercial Use Only
Norgaard, Daniel Arthur, "Effect of Nitrogen and Phosphorus Fertilizers Applied to Crops Grown on South Dakota Soils" (1952). Electronic Theses and Dissertations. 2231.