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Paper Information

Journal:   AGRICULTURAL RESEARCH   SPRING 2008 , Volume 8 , Number 1 (B); Page(s) 13 To 26.
 
Paper: 

EFFECT OF SOWING DATE AND WEED INTERFERENCE ON THE YIELD OF DRYLAND OF THREE LENTIL (LENS CULINARIS MED.) CULTIVARS IN KHRAMABAD

 
 
Author(s):  MOUSAVI S.K., AHMADI A.
 
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Abstract: 

The effects of sowing date, and weed interference on main agronomic characteristics of lentil varieties was investigated in a field experiment in Khorramabad during 2005-06 growing season. The experimental design was a randomized complete block in factorial arrangement with 4 replications. The experiment had 3 factors including: weed interference at two levels (weed free, and weed infested throughout the total growing season), planting date at three levels (autumn, winter, and spring) and three lentil varieties (Gachsaran, Flip93-93, and Lorestan landrace). Lentil biomass yield in autumn planting date was 21.6 and 155.8% more than that in winter and spring planting dates, respectively. Control of weeds, lentil biomass increased by 34.7%. Maximum grain yield (1486 kg ha-1) was achieved in autumn planting date, that was significantly more than two others sowing dates. Lentil grain yield for autumn planting date was 28 and 297.6% more than yield of winter and spring crop respectively. Yield of Gachsaran and Flip cultivars were significantly more than that of Lorestan landrace. Weeding increased lentil grain yield by 46.7%. Weed control caused 48.4, 50.3, and 30.1% increase in grain yield for autumn, winter, and spring sowing dates respectively. Yield losses due to weed interference for Gachsaran, and Flip cultivars were 54.7, and 47.6%, respectively. However there were not significant differences between weed free and weed infested situation for Lorestan landrace. Maximum grain yield (2394 kg ha-1) achieved in autumn sowing by Gachsaran cultivar at weed free treatment. Minimum yield belonged to spring crop of Lorestan landrace in weed infested situation.

 
Keyword(s): LENTIL, WEED, SOWING DATE
 
References: 
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