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I. Value of soil test information fo...

Lukin, Vladimir Vasiljevich.

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I. Value of soil test information for crop production. II. Soil pH response to lime and wheat yield response to soil pH. III. Economic strategies of low soil pH management in dual-purpose winter wheat production.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	I. Value of soil test information for crop production. II. Soil pH response to lime and wheat yield response to soil pH. III. Economic strategies of low soil pH management in dual-purpose winter wheat production./
Author:	Lukin, Vladimir Vasiljevich.
Description:	89 p.
Notes:	Adviser: Francis Epplin.
Contained By:	Dissertation Abstracts International62-01A.
Subject:	Agriculture, Agronomy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9999916
ISBN:	0493086293

I. Value of soil test information for crop production. II. Soil pH response to lime and wheat yield response to soil pH. III. Economic strategies of low soil pH management in dual-purpose winter wheat production.
Lukin, Vladimir Vasiljevich.

I. Value of soil test information for crop production. II. Soil pH response to lime and wheat yield response to soil pH. III. Economic strategies of low soil pH management in dual-purpose winter wheat production. - 89 p.

Adviser: Francis Epplin.

Thesis (Ph.D.)--Oklahoma State University, 2000.

<italic>Scope and method of study</italic>. This dissertation consists of three chapters, each summarizing research problems conducted separately during my doctoral program.

ISBN: 0493086293Subjects--Topical Terms:

1018679
Agriculture, Agronomy.

I. Value of soil test information for crop production. II. Soil pH response to lime and wheat yield response to soil pH. III. Economic strategies of low soil pH management in dual-purpose winter wheat production.
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100 1 $a Lukin, Vladimir Vasiljevich. $3 1249362
245 1 0 $a I. Value of soil test information for crop production. II. Soil pH response to lime and wheat yield response to soil pH. III. Economic strategies of low soil pH management in dual-purpose winter wheat production.
300 $a 89 p.
500 $a Adviser: Francis Epplin.
500 $a Source: Dissertation Abstracts International, Volume: 62-01, Section: A, page: 0263.
502 $a Thesis (Ph.D.)--Oklahoma State University, 2000.
520 $a <italic>Scope and method of study</italic>. This dissertation consists of three chapters, each summarizing research problems conducted separately during my doctoral program.
520 $a The first study was conducted to determine the value of information associated with soil testing for available nitrogen and phosphorus when choosing fertilizer application rates. Actual aggregate data of nutrient levels for winter wheat fields were used to estimate expected yields obtained with or without information.
520 $a The second study addressed to determine soil pH response to applications of agricultural lime, wheat yield response to soil pH, and the economics of lime application to soils used to produce winter wheat. The optimal strategies were found for several levels of initial soil pH.
520 $a The objectives of the third chapter were to determine whether the choice of wheat variety or application of phosphorus fertilizers could be an economically optimal alternative to lime application in the short-run. The study compared three strategies of soil acidity management.
520 $a <italic>Findings and conclusions</italic>. The estimated value of soil testing information was positive under various assumptions about the distribution of nutrients in soil. The values of soil testing information can be used in determining the upper limit of the cost of soil testing in winter wheat production.
520 $a An original functional form was specified and used to model soil pH response over time to lime application. Quadratic, linear-response plateau, and quadratic-response plateau functional forms were used to model wheat yield response to soil pH. The lime application level that maximizes net present value from wheat production was determined for several levels of initial soil pH.
520 $a The economics of the strategies were compared for tolerant and susceptible wheat varieties. Lime application is the preferable choice when the cost of liming is discounted over a period of five years. Tolerant varieties are more profitable than susceptible varieties if no lime is applied. The conditions of crop sharing contracts are considered: when a variable input has a multiyear effect, the optimal structure of revenue and cost shares changes.
590 $a School code: 0664.
650 4 $a Agriculture, Agronomy. $3 1018679
650 4 $a Agriculture, General. $3 1017510
650 4 $a Agriculture, Soil Science. $3 1017824
650 4 $a Economics, Agricultural. $3 626648
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690 $a 0473
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690 $a 0503
710 2 0 $a Oklahoma State University. $3 626630
773 0 $t Dissertation Abstracts International $g 62-01A.
790 $a 0664
790 1 0 $a Epplin, Francis, $e advisor
791 $a Ph.D.
792 $a 2000
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9999916