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Paper Information

Journal:   SEED AND PLANT   September 2003 , Volume 19 , Number 2; Page(s) 14 To 16.
 
Paper: 

EFFECT OF DIFFERENT METHODS OF TILLAGE ON YIELD AND YIELD COMPONENTS OF SOYBEAN IN GORGAN REGION

 
 
Author(s):  BARZALI M., JAVANSHIR A., MOGHADAM MOHAMMAD, SHAKIBA MOHAMMAD REZA, NOURINIA A.A.
 
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Abstract: 
In order to study the effects of four tillage systems on yield components of three soybean cultivars, an experiment was conducted in a field at Araghi -Mahalleh Research Station of Gorgan in summer of 1997, after wheat was harvested. The experiment was factorial based on a randomized complete block design with four replications and 12 treatments. Treatments ware the combinations of four tillage systems and soybean cultivars. The tillage systems were T__1) burning wheat straw; two perpendicular disks; irrigation; a shallow disk; planting, T__2) burning wheat straw; irrigation; direct drilling (no-tillage), T__3) two perpendicular disks on the field consisting of wheat straw; irrigation; planting and T__4) irrigation; direct drilling on the field having wheat straw (no-tillage). The three soybean cultivars used in the experiment were williams, Gorgan 3, and Sahar. Characteristics such as number of days from sowing to flowering and maturity, number of seeds per pod, number of pods plant, number of seeds per plant, 1000 seeds weight, and grain yield were measured. The results indicated that the T__3 and T__4 tillage systems increased number of days flowering and maturity, 1000 seeds weight, and grain yield, compared to the other systems. However, there was no significant difference among four systems in number of seeds per pod. The number of days from sowing to flowering and maturity and number of pods per plant in sahar cultivar were higher than those of the other two cultivars. The highest grain yield was obtained from sahar cultivar under T__4 tillage system. In this experiment, 1000 seed weight was the only component that showed significant positive correlation coefficient with the grain yield.
 
Keyword(s): SOYBEAN, YIELD, TILLAGE SYSTEMS EFFECT, DOUBLE CROPPING.
 
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