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Document Type

Thesis - University Access Only

Award Date


Degree Name

Master of Science (MS)

Department / School

Plant Science

First Advisor

Thomas E. Schumacher


A nutrient uptake model that accurately predicts the P uptake of crops in the field where environmental conditions are continually changing can be a useful tool in developing more efficient systems of fertilizer applications and recommendations. The objectives of this research are: 1. The determination of the effects of P rate, P dilution, and P band number on root distribution and root growth function of corn. 2. The evaluation of the Barber - Cushman mechanistic P uptake model under South Dakota field conditions.

Library of Congress Subject Headings

Corn -- Roots -- Physiology
Soils -- Phosphorus content -- Mathematical models




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