Comparison of Population of Aphis fabae and its Natural Enemies and Yield in Intercrop-ping of Faba Bean (Vicia faba) and Marigold (Calendula officinalis)
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The effect of marigold-faba bean intercropping on population of Aphis fabae, was studied by an experiment as rhandomized complete block design with seven treatments including Vicia faba sole cropping, Calendula officinalis sole cropping, 50 percentage Calendula and 50 percentage faba bean intercropping, 35 percentage Calendula and 65 percentage faba bean, 35 percentage faba bean and 75 percentage intercropping Calendula, 25 percentage Calendula and 75 percentage faba bean intercropping and 75 percentage Calendula and 25 percentage faba bean in three replications. The results revealed that nymph densities in examined treatments range from 15.4 nymph on 35 percentage faba bean and 75 percentage intercropping Calendula to 125 nymph on Vicia faba sole treatment. Adult density was evaluated in which the highest population of adults in faba bean sole cropping and the lowest population in T3 tratment were recorded. The result as well indicated that the most of population of natural enemies were shown in intercropping treatment. Results showed that species richness of crops is an important strategy to increase the species diversity of insects. Maximum seed yield were achieved at sol cropping with 250.2 g.m-2. Highest seed yield were achieved at 25 percentage Calendula and 75 percentage faba bean intercropping with 234.2 g.m-2. The greatest land eqiuvalant ratio (1.32) was obtained in 75 percentage Calendula and 25 percentage faba bean treatment. Land eqiuvalant ratios for all intercropping patterns were greater than 1, showing the higher efficiency and profitiability of intercropping compared to sole cropping.
Language:
Persian
Published:
Journal of Agricultural Science and Sustainable Production, Volume:29 Issue: 1, 2019
Pages:
305 to 317
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