Search

Present field experiment was carried out to estimate yield losses in brinjal due to brinjal shoot and fruit borer, Leucinodes orbonalis Guenee. The results revealed that the mean fruit yield obtained from the plots treated with alternate sprays of acephate 75 SP (0.03%) and dimethoate 30 EC (0.03%) was 203.47 and 202.13 q ha-1, whereas it was only 105.65 and 107.40 q ha-1 in untreated plots during 2019 and 2020, respectively. The yield obtained from treated and untreated plots differed significantly from each other and the increased yield was 97.78 and 94.73 q ha-1 during 2019 and 2020, respectively. The increase in yield over untreated control was 92.59 and 88.21 per cent while, the avoidable loss was 48.08 46.87 per cent during 2019 and 2020, respectively. The yield losses due to brinjal shoot and fruit borer could be avoided by the protective application of insecticides to brinjal crop. [ABSTRACT FROM AUTHOR]

Investigations were carried out on the "Relative susceptibility of different lentil varieties against pulse beetle, Callosobruchus chinensis (Linn.)" during 2014-15 at S.K.N. College of Agriculture, Jobner. Out of 10 varieties screened on the basis of biological parameters and physico-chemical characters against this insect, Asha and PL-01 were less susceptible and Spana, IPL-81 and L-4076 were highly susceptible. However, PBW-343, L-147, RKL-60701, JL-3, RKL-607 and RKL6118 were moderately susceptible. It was evident from the correlation coefficient that the grain size had a significant and positive correlation with grain damage and weight loss. The grain hardness had a significantly negative correlation with damaged grains and grain weight loss. Thus, it is clear that the increase in grain hardness decreased the level of infestation and viceversa. The moisture contents of the grains were observed to be correlated significantly and positively with the infestation by C. chinensis. Thus, the population and infestation of the pest increased with the increase in moisture contents. [ABSTRACT FROM AUTHOR]

Presents a complete characterization of trapping levels in red mercuric iodide single crystals. Result of photon simulated current measurements on red mercuric iodide single crystals; Discussion on the influence of trapping levels on the detector operation at room temperature; Experimental details and result of the study.