Effect of planting pattern and weeding frequency on weed infestation, yield and yield components of faba bean in Bale Highlands, South Eastern Ethiopia

Authors

  • Haro Adula
  • Vijay Singh

Keywords:

Faba bean, planting pattern, weeding frequency, yield and yield components, Ethiopia.

Abstract

Weed interference is one of the most important production constraints causing up to 80% reduction in potential yield of Faba bean (Vicia faba L.). Considering this, an experiment was conducted at Madda Walabu University (MWU) and Sinana Agricultural Research Center (SARC) during 2018 main cropping season to evaluate the effect of planting pattern and weeding frequency on weed infestation, yield and yield components of Faba bean. There were 18 treatment combinations of three planting patterns (30 cm x 10 cm, 40 cm x 10 cm and 30 cm x 15 cm) and six weeding frequencies viz., one hand weeding and hoeing at two weeks after crop emergence (WACE); one hand weeding and hoeing at three WACE; one hand weeding and hoeing at four WACE; two hand weeding and hoeing at two and five WACE; weed free check and weedy check. Factorial combined treatments were laid out in Randomized Complete Block Design (RCBD) with three replications. Results showed the weed species diversity was higher at MWU than SARC. Weed dry biomass was significantly (p<0.05) affected by main effects of site while days to 50 % flowering, days to 90% physiological maturity, plant height and harvest index were highly significantly (p<0.01) affected by a main effects of site. Total weed density and hundred seed weight were significantly (p<0.05) affected and days to 50% flowering and crop plant stand showed highly significant (p<0.01) affected by main effects of planting pattern. The highest grain yield (4135.8 kg/ha) obtained from 30 cm x 15 cm planting pattern with two hand hoeing and weeding at two and five WACE at SARC and un-restricted weed infestation reduced faba bean yield up to 77.2%. The 30 cm x 15 cm planting pattern with two hand hoeing and weeding at two and five WACE had highest net benefit (42,566 Birr/ha) and marginal rate of return (1193). Thus, planting faba bean at the spacing of 30 cm between rows and 15 cm between plants and weeding the crop by hand hoeing twice at two and five WACE resulted in optimum growth and grain yield of faba bean. Therefore, this can be recommended for Bale high land and similar agro-ecology in South Eastern Ethiopia.

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Published

2020-11-10

How to Cite

Adula, H., & Singh, V. (2020). Effect of planting pattern and weeding frequency on weed infestation, yield and yield components of faba bean in Bale Highlands, South Eastern Ethiopia. Indian Journal of Plant Protection, 48(1-2). Retrieved from https://epubs.icar.org.in/index.php/IJPP/article/view/107110

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Articles