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Birsa Agricultural University, Ranchi

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20191
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Subject: Agricultural Entomology × Author: KUMAR, CHAMAN × Start date: 2013 ×
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    ThesisItemOpen Access
    EVALUATION OF MUNG BEAN [Vigna radiata (L.) Wilczek] GENOTYPES AGAINST MAJOR INSECT PESTS IN FIELD AND STORAGE
    (Birsa Agricultural University, Ranchi, 2019) KUMAR, CHAMAN; Singh, P. K.
    Mung beans are a healthful source of protein, fibers and rich in vitamins and minerals. A large number of insect pests are attacking on mung bean throughout their growth period, which acts as limiting factor in production or grain yield, insect pests play an important limiting factor, particularly thrips, whitefly, jassid and pod borer complex in field while pulse beetle Callosobruchus chinensis (L.) is one of the major problems for increasing pulse production in India in terms of loss of seed viability and the infestation of pulse grain in storage. The weather conditions prevailing in the region play an important role in the occurrence and subsequent build-up of insect pests and their associated biotic agents. Thus, there is real need to develop area-wise the optimal methods of pest control by studying its population build up in relation to agro-eco factors and screen new varieties from time to time to identify the new promising lines suitable for specific environmental conditions for effective management of insect pests. Keeping this in view the present investigations were carried out on the topic entitled “Evaluation of mung bean [Vigna radiata (L.) Wilczek] genotypes against major insect pests in field and storage” The field experiments were conducted at Research Farm during summer 2018 and the storage experiment was carried out under the laboratory conditions at Department of Agricultural Entomology, Ranchi Agriculture College, Birsa Agricultural University Kanke, Ranchi, during September to October 2018. In correlation studies the population of thrips, whitefly and jassid were significantly correlated with maximum and minimum temperature, whereas borer complex was significantly positively correlated with minimum temperature and non-significantly positively correlated with maximum temperature. Population of thrips, whitefly and jassid non-significantly negatively correlated with maximum relative humidity but population of borer complex, showed non-significant positively correlated with maximum relative humidity. Thrips, whitefly and jassid population also showed non-significant correlation with minimum relative humidity. Whereas, borer complex showed significant positive correlation with minimum relative humidity, when the rain fall was taken in to consideration then population of thrips and whitefly showed non-significant correlation with rainfall, whereas jassid and borer complex showed positive correlation with rainfall. Among the 52 genotypes the genotypes [COGG 13-19 (3.0), PDM 139 (3.1), Pant M-2 (3.6), SML 669 (3.7), IPM 2-14 (3.7), Pusa 1831 (3.7), PM 14-13 (3.9) and COGG 13-39 (4.3)], [IPM 205-7 (1.3), IPM 410-3 (1.3), SML 1829 (1.2), Pusa 1841 (1.3), IPM 312-4 (1.3), Pant M-5 (1.6), TMB 136 (1.9), COGG 13-39 (2.1), SVM 61-61 (2.4), and KM 2355 (2.3)] and [IPM 312-4 (2.0%), COGG 13-19 (2.3%), IPM 2-14 (3.0%) and IPM 512-1 (3.3%)] were found promising against thrips/5 flowers, whitefly/cage and per cent pod damage (caused by borer complex), respectively. The study on evaluation of mung bean genotypes against pulse beetle in stored grain the lowest number of eggs were found in genotypes [SML 1829 (1.0), VGG 16-058 (1.0), IPM 2-14 (1.3), KM 2355 (1.3), SML 669 (1.3), VGG 16-036 (1.3), IPM 512-1 (1.7), MH 1320 (1.7) and Pusa Vishal (1.7)], whereas the lowest number of adult emergence was noticed in [IPM 2-14 (60), HUM 16 (61), SML 668 (70.3) and KM 2355 (71.3)]. In terms of per cent grain weight loss [HUM 16 (18.7%), IPM 2-14 (18.8%), MH 421 (19.9%), SML 668 (20.1%), COGG 13-19 (20.2%), KM 2355 (20.7%), SML 1829 (20.8%), SML 1082 (20.8%), COGG 13-39 (21.5%), MH 13-20 (21.7%), VGG 16-058 (22.1%), VMS 13-12 (22.2%), SVM 61-61 (22.2%) and SML 669 (22.4%)] genotypes were observed lowest per cent grain weight loss and the genotypes [IPM 2-14 (92%) and HUM 16 (89.7%] were showed highest per cent of seed germination.