Field study was conducted at Dryland Farming Research Station in Bhilwara, Rajasthan during Kharif seasons of 2010 and 2011 to study the weed control efficiency of different weed management practices including pre-and post-emergence herbicides in blackgram [Vigna mungo (L.) Hepper]. Among herbicidal weed control treatments, the lowest weed density and dry matter, and highest yield attributes, seed yield and economic return with B:C ratio was recorded with quizalofop-ethyl 50 g/ha 30 DAS and it was statistically at par with interculture at 15 DAS fb imazethapyr 100 g/ha 30 DAS, interculture at 15 DAS fb quizalofop-ethyl 50 g/ha 30 DAS, imazethapyr 100 g/ha 20 DAS and weed free. Whereas, highest weed control efficiency was recorded with alachlor 1.0 kg/ha PRE fb imazethapyr 100 g/ha 30 DAS. All herbicidal treatments reduced weed biomass and improved seed yield and yield attributing parameters as compared to weedy check. Weedy check registered the highest values of weed count and biomass and lowest seed yield and yield attributing characters. Rainfall was directly related to weed count and weed dry matter accumulation with the coefficient of 0.65 and 0.61, respectively.

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Chilli (Capsicum annum L.) is one of the important commercial crop of Rajasthan. The present study was conducted in six villages in Gangrar tehsil of district Chittorgarh. To the selection of respondents, a comprehensive list of all the chilli growers were prepared from selected villages. The production of vegetables is largely in the hands of small and marginal farmers and productivity is low as compared to other countries. The major reasons are lack of high yielding varieties, pest and diseases infestation, losses due to weed emergence, post harvest handling etc. The findings indicated that majority of the farmers (65.00 %) had medium level of adoption regarding improved chilli cultivation technology, while 23.33 and 11.67 per cent respondents had low and high adoption level, respectively. The study further indicated that practice wise adoption of the respondents was more in time of sowing followed by irrigation, land preparation, seed rate, seed treatment, harvesting and drying, whereas less adoption level was recorded by the farmers in practice like high yielding varieties, weed management and plant protection.