Bioefficacy of different Insecticides against aphid (Myzus persicae) in cumin (Cuminum cyminum L.)

A field trail was conducted in randomized block design at KVK Bhilwara, MPUAT, Udaipur to evaluate efficacy of carbosulfan 25% EC at 250, 312.5 and 375 g a.i. ha-1 along with thiamethoxam 25% WG at 25 g a.i. ha-1, imidacloprid 17.8 SL at 25 g a.i. ha-1 and acetamiprid 20% SP at 10 g a.i. ha-1 against aphid (Myzus persicae) in cumin during Rabi, 2013-14 and 2014-15. The result revealed that two sprays of carbosulfan 25% EC at 375 g a.i. ha-1 was found effective against aphid. It caused maximum mean reduction in thrips population after second spray at 10 days after application, which was 87.52% and 88.45% during 2013-14 and 2014-15, respectively. It was followed by carbosulfan 25% EC at 312.5 g a.i. ha-1. The maximum yields were recorded in case of carbosulfan 25% EC at 375 g a.i. ha-1, which were 622.3 and 456.7 kg ha-1 during 2013-14 and 2014-15, respectively and incremental yield of 358.6 kg ha-1 over untreated control

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Not AvailableForty one genotypes of seed purpose watermelon were evaluated under rainfed conditions of Jaisalmer for their seed yield stability during kharif 2011-2013. Among the genotypes variability was fairly conspicuous for seed size, shape, color and seed distribution pattern inside the fruit flesh. Number of fruits, fruit yield and seed yield per plant exhibited high heritability coupled with high genetic advance as per cent of mean. The analysis of variance showed significant differences among the genotypes and environments for seed yield and other contributory traits. Four genotypes viz., SKNK-683, SKNK-112, SKGPK-26 and SKGPK-30 remained stable over seasons, meanwhile genotypes viz., DRB-675, DRB-677, SKNK-665, SKNK-679, SKNK-903, SKGPK-22, SKGPK-24, SKGPK-31 and SPS-8 performed better in good rainfall year. These genotypes can be used in further breeding programs for development of high seed yield genotypes of watermelon for different situations of hot arid zone.Not Availabl

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Not AvailableCoriander (Coriandrum sativum L.) is one of the important seed spice crops of India (Purthi, 1976) with large domestic consumption and a bright export potential. Rajasthan state has 1,37,670 ha area under the crop, with the production of 1,44,951 t (Anonymous, 1995-96), thus constituting 40-50% of the total area, as well as production of the country. The dry climate , of the state, particularly during crop maturity, promotes the quality of produce. However, the crop suffers from low productivity (5-6 q ha·l) on account of the lack of high yielding varieties, high incidence of diseases and pests, and poor adoption of improved package of practices (Sharma, 1994). Studies on the germplasm collection revealed that a genetic variability in respect of yield and yield attributes is limited, restricting the progress of crop improvement. Controlled hybridization to exploit limited variability is difficult due to small flower size.Not Availabl

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Not AvailableCluster bean is an annual drought hardy legume crop mainly cultivated in arid regions receiving scanty (150-400 mm) and erratic rainfall during crop growth period. For the enhancement of genetic diversity in this locally adapted crop, three genotypes HG- 2-20 (hispid branched), CAZG15-6 (branched glabrous) and CAZG 15-3 (single stem, hispid and regular bearing) were irradiated with gamma rays (100 -1600 gray) with 100 gray intervals. The mutation rate increased with increasing dose up to 300 gray, there after gradually reduced indicating decline in rate of recovery of mutations with respect to increasing M1 damage. At higher dose of 800 gray, mutation efficiency drastically reduced with reduced survival and high level of pollen sterility in M1 generation. Beyond 800 Gy dose all the seedlings died within a few days (15 d) of germination. Based on mutation efficiency and effectiveness a gamma radiation dose between wide ranges (200-700 Gy) was found appropriate for inducing variability. The mutagenesis has generated, a good amount of diversity for economically and agronomically important traits.Not Availabl