Document Type

Thesis - Open Access

Award Date

1952

Degree Name

Master of Science (MS)

Department

Agronomy

Abstract

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

Fertilizers
Soils -- South Dakota

Description

Includes bibliographical references

Format

application/pdf

Number of Pages

39

Publisher

South Dakota State University

Rights

No Copyright - Non-Commercial Use Only
http://rightsstatements.org/vocab/NoC-NC/1.0/

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