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Paper Information

Journal:   WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)   SUMMER 2007 , Volume 11 , Number 40 (A); Page(s) 167 To 176.
 
Paper: 

WEED POPULATION RESPONSE TO CHICKPEA (CICER ARIETINUM L.) VARIETY AND PLANTING DATE

 
 
Author(s):  MOUSAVI S.K., PEZESHKPOUR P., SHAHVERDI M.
 
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Abstract: 

The effects of Chickpea (Cicer arietinum L.) varieties, and sowing dates on weed interference were investigated in a 2- year (2002-3 and 2003-4 growing season) field experiment in Agricultural Research Station of Kohdasht in Lorestan Province. The experimental design was a randomized complete block in factorial arrangement with 3 replications. The experiment had 3 factors: weed interference at 2 levels (weed free, and weed infested throughout the total growing season), planting date at 3 levels (autumn, winter, and spring) and Chickpea varieties at 3 levels (ILC482, Hasham, and Greet). Weed density in autumn sowing plots was more than 3 and 7 times greater in autumn chickpea than in winter and spring sowing plots, respectively. Weed biomass in autumn sowing was 2.5 times as much as winter or spring sowing. Wild safflower and volunteer barley were the most frequent among the weed species. Volunteer barley was mainly present in autumn and winter planting dates. Wild safflower was among the weed species that in addition to competition caused much difficulty to chickpea harvesting. Based on the hyperbolic curve fitted to the data, Chickpea maximum biomass reduction due to weed competition was estimated to be 91.8 %.

 
Keyword(s): WEED FLORA, PLANTING DATE, CHICKPEA VARIETY
 
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