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Jhunjhunūn, India

Kumar R.,Adaptive Trial Center | Kumar R.,Forage Research and Management Center
Indian Journal of Agricultural Research

There is a tremendous opportunity for increasing the production and productivity of chickpea crop by adopting the improved technologies. Total 2450 Crop Demonstrations on chickpea variety RSG-888, BG-372 and GNG-663 were conducted at farmers' fields in district Jhunjhunu (Rajasthan) during five consecutive rabi seasons 2007-08 to 2011-12. On overall average basis, 17.81 % higher grain yield was recorded under demonstrations than the farmers traditional practices (check). The extension gap, technology gap and technology index were 168/195 and 221 kg per ha, 867, 725 and 964 Kg per ha and 43.33, 32.95 and 43.82 % in variety RSG-888, BG-372 and GNG-663, respectively. Data on technology index reduced from 47.50% (2007-08) to 43.82% (2011-12) exhibited the feasibility of technology demonstration. Source

Kumar R.,Adaptive Trial Center
International Journal of Agricultural and Statistical Sciences

Mustard is one of the most important oilseed crops in India. It plays a major role in supplementing the income of small and marginal farmers of transitional plain of inland drainage zone of Rajasthan. Non adoption of recommended package of practices and improved varieties are the major causes of low productivity of mustard in this zone. The present study was undertaken to assess the efficacy of recommended package of practices to augment yields on farmers' fields in Jhunjhunu districts of Rajasthan during 2006-07 to 2011-12. The improved cultivation package comprises of improved variety, recommended dose of fertilizer and micronutrients, control of insect-pest and diseases by use of insecticide and fungicide at economic threshold level. Adoption of improved cultivation package improves 12.7 to 50.8% yields compared to conventional practices. Technology and extension gap in cultivar Laxmi was 1360 and 430 kg/ha and Vasundhara was 925 and 197 kg/ha, respectively. Yield gaps can be further minimized by crop technology demonstration. Data on technology index reduced from 41.33% (2006-07) to 32.69% (2010-11) exhibited the feasibility of technology demonstration. Source

Godara A.S.,Adaptive Trial Center | Gupta U.S.,Adaptive Trial Center | Dubey R.K.,Adaptive Trial Center | Dubey R.K.,Central Soil and Water Conservation Research and Training Institute
Annals of Agri Bio Research

An experiment was conducted during kharif 2011 at Tabiji, Ajmer in randomized block design having three replications to evaluate 12 treatments (T1 : Season long weedy check, T2 : Weed free check, T3 : Pre-emergence application of 1.0 kg/ ha pendimethalin, T 4 : Pre-emergence application of 1.0 kg/ha pendimethalin+one hand weeding, T5 : Post-emergence use of 25 g/ha quizalofopethyl 20 DAS, T6 : Post-emergence use of 37.5 g/ha quizalofopethyl 20 DAS, T 7 : Post-emergence application of 50 g/ha quizalofopethyl 20 DAS, T8 : Post-emergence application of 4 g/ha chlorimuronethyl 20 DAS, T9 : Post-emergence use of 6 g/ha chlorimuronethyl 20 DAS, T 10 : Post-emergence application of 20 g/ha imazethapyr 20 DAS, T 11 : Post-emergence application of 40 g/ha imazethapyr 20 DAS and T12 : Post-emergence application of 60 g/ha imazethapyr 20 DAS). Results revealed that season long weed free check recorded minimum weed dry weight (g/m2) at 30 DAS (0.71), 60 DAS (0.71) and at harvest (3.65) but variations in weed dry weight at harvest were indifferent to combined use of pre-emergence pendimethalin+hand weeding or post-emergence application of 40 or 60 g/ha imazethapyr. Post-emergence application of 40 or 60 g/ha imazethapyr recorded significantly higher seed yield (5.44, 5.59 q/ha), haulm yield (14.85, 15.12 q/ha), biological yield (20.29, 20.71 q/ha), harvest index (26.81, 26.91), pods/plant (22.0, 23.2), seeds/pod (10.5, 10.8) and weight of seeds/pod (0.51, 0.54 g) but variations were indifferent to season long weed free check and pre-emergence pendimethalin+hand weeding. However, post-emergence application of 60 g/ha imazethapyr recorded higher net returns (Rs./ha) to a tune of 4250,6410 and 2.72 as well as higher benefit : cost ratio to a magnitude of 1.02, 1.15 and 0.25 over season long weed free check, pre-emergence use of pendimethalin+one hand weeding and post-emergence use of 40 g/ha imazethapyr, respectively. Source

A field experiment was undertaken to evaluate the performance of different weed control treatments in cluster bean during kharif, 2011 at Tabiji, Ajmer in randomized block design with three replications. Treatment of weed free check was found best by recording highest values of yield attributes, seed (12.20 q/ha), haulm (32.16 q/ha) and biological yield (44.36 q/ ha) with maximum weed control efficiency at successive stages. It was at par with Pendimethalin 1.0 kg/ha (PRE) + one hand weeding, imazethapyr 40 g/ha and imazethapyr 60 g/ha at 20 days after sowing (DAS). Among different herbicides treatments, imazethapyr 60 g at 20 DAS showed highest values of yield attributes, seed yield (11.65 q/ ha), haulm yield (31.12 q/ ha), weed control efficiency (90.1, 88.0 and 83.9 per cent at 30, 60 DAS and at harvest, respectively) and minimum weed index (4.7). In monetary term also imazethapyr 60 g/ha recorded higher net returns (Rs 69030/ha) and benefit-cost ratio (5.31) than season long weed free check (Rs 66990/ ha and 4.05, respectively) on account of higher cost of cultivation involved in latter treatment to a tune of Rs 5930/ ha. © 2015, Agricultural Research Communication Centre. All Rights Reserved. Source

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