Faba bean yield losses due to orobanche infestation and effect of plant density and weed control on annual weeds and orobanche And faba bean productivity

Abstract: Two field experiments were conducted in naturally infested fields with weeds and broomrape (Orobanche crenata Forsk.) at Shandaweel Research Station, Sohag governorate during 2006/07 and 2007/08 winter seasons to estimate yield losses due to Orobanche infestation and to study the effect of plant density and some weed control treatments on controlling annual weeds; Orobanche and faba bean yield and its components.
In the first experiment, results indicated significant correlation between number of orobanche spikes and weight of orobanche spikes, plant height, number of pods / plant, weight of pods / plant and weight of seeds / faba bean plant in both seasons except number of branches/plant in first season. Data showed clearly that the existence of one orobanche spike / faba bean plant can decrease seed yield by 19.9 % and 46.6 % in first season and by 14.3 and 50.0 %, respectively, in second season. In the second experiment, the data showed that increasing plant density from 13 to 27 plant per m2 reduced dry weight of broad-leaved, grassy, and total weeds by 51.9, 24.1and 32.8 %, respectively, in the first season and by 17.8, 19.1and 18.7 %, respectively, in the second season. Contrary, increasing plant density from 13 to 27 plant per m2 increased number and dry weight of Orobanche spikes / m2 by 13.2, 10.8%, 24.0 and 10.7%, respectively, in first and second seasons and increased seed yield of faba bean by 60.7 and 50.0 %, respectively, in first and second seasons. All weed control treatments reduced the dry weight of annual weeds, number and dry weight of Orobanche spikes and increased all faba bean characteristics understudy compared with untreated plots. Hand hoeing twice and black plastic 8 WAP achieved good control of annual weeds. The highest values for seed yield was obtained from hand hoeing and pulling, Basagran + Fusilade + Oroban herbicides and white plastic 8 WAP by 171.4, 128.6 and 85.7 %, respectively, in first season and from hand hoeing and pulling, Basagran + Fusilade + Oroban herbicides and white plastic 6 WAP by 134.8, 117.4 and 69.6 %, respectively, in second season. The best treatments for faba bean yield and quality were achieved from high plant density with hand hoeing and pulling twice and Basagran + Fusilade + Oroban herbicides.
Publication year 2008
Pages 627-646
Organization Name
City المنيا
serial title Minia J. Agric. Res. Develop
ISSN 1110-0257
Author(s) from ARC
Agris Categories Weeds and weed control
AGROVOC
TERMS		 Faba beans. Infestation. Orobanche. Weed control. Yield components. Yields.
Proposed Agrovoc orobanche infestation;yield losses;
Publication Type Journal
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