Browsing by Author "NAIR, SUNIL"
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Institutional PublicationsItem Open Access CATALOGUE ON GRASSPEA (LATHYRUS SATIVUS L.) GERMPLASM(CENTRE FOR BIODIVERSITY RESEARCH AND DEVELOPMENT, DIRECTORATE OF RESEARCH SERVICES, INDIRA GANDHI KRISHI VISHWAVIDYALAYA, RAIPUR, CHHATTISGARH, INDIA 2008) PANDEY, R.L.; KASHYAP, O.P.; SHARMA, R.N.; NANDA, H.C.; GEDA, A.K.; NAIR, SUNILThesisItem Open Access EVALUATION OF KHARIF ONION GENOTYPES UNDER CHHATTISGARH PLAINS CONDITION ( Allium cepa L.)(Indira Gandhi Krishi Vishwavidyalaya, Raipur, 2017) SAHU, KHUSBOO; SHARMA, PRAVEEN KUMAR; DIXIT, AMIT; NAIR, SUNIL; SAXENA, RAVI R.The present investigation entitled “Evaluation of kharif onion genotypes under Chhattisgarh plains condition (Allium cepaL.)” was carried under All India Network Research project on Onion & Garlic at Horticulture Instructional cum Research Farm Department of Vegetable Science, College of Agriculture, IGKV, Raipur (C.G.) during kharifseason 2016-17 with 38 genotypes of onion in Randomized Block Design with three replications. The data of different characters were recorded and analyzed to work out the mean performance, variability, heritability, genetic advance, correlation and path analysis for plant height, no. of leaves per plant, leaf length, leaf thickness,pseudostem thickness, equatorial diameter of bulb, polar diameter of bulb, neck length, plant establishment percent, bolting percent, total soluble solids percent, bulb fresh weight, average weight of marketable bulb, total bulb yield per ha and storage studies. Among the genotypes evaluated ON15-18, ON15-32 and ON16-17 were found best for bulb fresh weight, neck length and total yield. Whereas, recorded highest total soluble solids ON15-32. Maximum plant height recorded in ON15-32, no. of leaves per plant found maximum inON15-45, recorded maximum in while, ON16-08 and ON14-23 recorded maximum leaf length and leaf thickness respectively. The highest estimated of genotypic coefficient of variation (GCV) were observed in case of bolting percent, bulb fresh weight, average weight of marketable bulb, total bulb yield . The highest estimates of heritability in broad sense was obtained for bolting followed by bulb fresh weight, average weight of marketable bulbs, neck length, polar diameter and total bulb yield . Correlation coefficient analysis revealed bulb fresh weight showed positive and significant correlation with average weight of marketable bulb and total yield. On the basis of storage evaluation it is evaluated that the genotypes ON15-32, ON14-23 and ON16-17has maximum shelf life and store for longer duration in Chhattisgarh plains condition.ThesisItem Open Access IDENTIFICATION OF POTENTIAL BIO-AGENTS, EVALUATION OF NEW MOLECULES AND SCREENING FOR RESISTANCE TO MITIGATE SHEATH BLIGHT OF RICE(Indira Gandhi Krishi Vishwavidyalaya, Raipur, 2019) Amit; KOTASTHANE, A.S.; TIWARI, P.K.; NAIR, SUNIL; CHANDRAKAR, G.Rice (Oryza sativa L.) is most important crop among all the cereals that constitute the staple diet all over the world. In case of Asia rice is the largest growing cereal crop. Chhattisgarh state is popularly known as “bowl of rice” of the country; rice is grown as principal crop of this state and occupies 70 per cent of net sown area. Sheath blight of rice is second most economically important disease after blast. In tropical Asia, cultivation of rice under lowland condition cause average yield loss ranges between 5-10% and 5-20% in case of Chhattisgarh. Most common practice among farmers for the effective management of sheath blight is application of fungicide which is adopted worldwide. However it is necessary to evaluate or screen the new molecules of fungicides for the management of the disease very effectively. Fungicide molecules are hazardous to natural ecosystem an answer to this problem application of fungicides is replaced by use of bio-control agents which is more eco-friendly in the long term. For eco-friendly management of rice diseases host resistance is major tool and has played a major role in sustaining the production of rice. For effective management of sheath blight, development of resistant cultivar is a best approach as it required no extra cost to farmers and safe to environment. The present investigation was therefore undertaken with the evaluation and identification of potential bio-agents against Rhizoctonia solani. Confrontation assays involving 131 bio-agents (121 Pseudomonas fluorescens + 10 isolates of Trichoderma spp.) identified two potential fluorescent Pseudomonas (P86 and P74) and 10 isolates of Trichoderma spp. effective against R. solani. Two new molecules WCPL6060 and BAS 750 02 F along with reference fungicides were evaluated and were found effective in reducing the rate of disease development when the fungicidal applications were used as curative sprays. Seventeen rice genotypes were reevaluated for sheath blight resistance following artificial inoculation of which 14 expressed resistances.Institutional PublicationsItem Open Access TIVDA BEEJ UTPADAN PRADYOGIKI SANDARBH CHHATTISGARH(SANCHALAK ANUSANDHAN SEVAYE EVAM A.BHA. SAMANVIT MULLARP PARIYOJANA, INDIRA GANDHI KRISHI VISHWAVIDYALAYA, RAIPUR, CHHATTISGARH) CHANDRAKAR, DEEPAK; NANDA, HEMCHAND; DAS, GOPI KRISHNA; NAIR, SUNIL; GEDA, ARVIND