Paper Information

Journal:   JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH   Spring 2003 , Volume 4 , Number 14; Page(s) 1 To 18.
 
Paper: 

EFFECT OF SUBSOILING ON SOIL MOISTURE CONCERVATION AND DRY LAND WHEAT YIELD

 
 
Author(s):  ESKANDARI I., HEMAT A.
 
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Abstract: 
In dry land areas, tillage practices should be involved soil and water conservation in addition to land preparation. In the most dry land cold areas Iran, tillage practices usually are performed in soil with high moisture content especially for plant crops during spring. Performance of tillage practices under high moisture content in soil with high clay percent and low organic matter leads to compact soil and it damages soil structure. This study was conducted in Maragheh Research Station on a clay loam soil for 3 years to determine the effect of subsoiling on soil moisture conservation and wheat grain yield in dry land conditions with this assumption that deep tillage might increase water use efficiency and wheat grain yield. There were used treatments with three subsoiler shank spacing (50, 75 and 110 cm) and one treatment without subsoiling in Randomized Complete Block Design (RCBD) with four replications. Soil bulk density and soil moisture content were measured between two subsoiler shanks in 10 cm soil depth. Subsoiling decreased soil bulk density and increased soil moisture content. The highest reduction of soil bulk density in 0-40 cm soil depth was measured at shank spaces of 50 and 75 cm. Soil moisture content and wheat grain yield increased by 15% and 21% respectively, with using subsoiler at 75 cm shanks spaces in comparison with treatment which was not used subsoiler.
 
Keyword(s): SUBSOILER, MOISTURE CONTENT, WHEAT, YIELD, DRY LAND, DEEP TILLAGE
 
References: 
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