Rajasthan Agricultural University

Bikaner, India

Swami Keshwanand Rajasthan Agricultural University is an agricultural university located in Bikaner in the Indian state Rajasthan. University, formerly a part of the Mohanlal Sukhadia University, Udaipur and became a separate entity on 1 August 1987. The University consists of six colleges and teaching is split between two campuses, one 45 km from Jaipur in Jobner and the other in Bikaner.The constitute colleges include:The College of Agriculture, BikanerThe College of Home Science, BikanerInstitute of Agribusiness Management, BikanerAcademic Staff College cum Distance Education Centre, BikanerS.K.N. College of Agriculture, Jobner College of Agriculture, Lalsot The university is authorized to provide instruction in Agriculture and Allied science which include Horticulture, Veterinary & Animal science, Home Science and Agri-Business Management. It has also been authorized in other fields of agricultural learning, which the University may deem fit. It is empowered to maintain academic institutions, dealing with agriculture, veterinary and animal science, home science, agri-business management, etc., to carry out instruction in these faculties, hold examinations, and confer degree, diplomas, pertaining to professional qualifications. Wikipedia.

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Shavrukov Y.,University of Adelaide | Gupta N.K.,Rajasthan Agricultural University | Miyazaki J.,University of Adelaide | Baho M.N.,University of Baghdad | And 4 more authors.
Functional and Integrative Genomics | Year: 2010

Previous work identified the wild barley (Hordeum vulgare ssp. spontaneum) accession CPI-71284-48 as being capable of limiting sodium (Na+) accumulation in the shoots under saline hydroponic growth conditions. Quantitative trait locus (QTL) analysis using a cross between CPI-71284-48 and a selection of the cultivated barley (H. vulgare ssp. vulgare) cultivar Barque (Barque-73, a moderate Na+ excluder) attributed the control of the Na+ exclusion trait from CPI-71284-48 to a single locus on the short arm of chromosome 7H, which was named HvNax3. The locus reduced shoot Na + accumulation by 10-25% in plants grown in 150 mM NaCl. Markers generated using colinearity with rice and Brachypodium, together with the analysis of introgression lines and F2 and F3 families, enabled HvNax3 to be mapped to a 1.3-cM interval. Genes from the corresponding rice and Brachypodium intervals encode 16 different classes of proteins and include several plausible candidates for HvNax3. The potential of HvNax3 to provide a useful trait contributing to salinity tolerance in cultivated barley is discussed. © Springer-Verlag 2010.

Gupta N.K.,Rajasthan Agricultural University | Agarwal S.,Rajasthan Agricultural University | Agarwal V.P.,Rajasthan Agricultural University | Nathawat N.S.,Indian Central Arid Zone Research Institute | And 2 more authors.
Acta Physiologiae Plantarum | Year: 2013

An experiment was conducted to find out the effect of short-term heat stress on morpho-physiological characters and antioxidants in 10 diverse wheat genotypes. Seed were aseptically grown in test tubes containing filter paper whose lower half was dipped in one-fourth MS media. Heat stress conditions were created by exposing the seedlings at 45 °C for 2 h after 7 days of their germination. Measurements were taken after 3 days of treatment. Heat stress significantly reduced the shoot dry mass, root dry mass, shoot length and root length in all the genotypes. The chlorophyll content and membrane stability index decreased, whereas proline content increased in heat-treated plants. There was significant increase in the activity of catalase, guaiacol peroxidase and superoxide dismutase under stress conditions. The genotypic variations were also significant. On the basis of a coordinated simulation of all these parameters, wheat genotypes Raj 4037 and PBW 373 were identified as tolerant to high temperature stress. The study provides evidence that the tolerant genotypes were equipped with better management of physiological processes along with an efficient antioxidative defence system, sensitivity of which can be evaluated to a sufficient level of certainty at seedling stage. © 2013 Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków.

Khichar V.,University of Rajasthan | Kataria A.K.,University of Rajasthan | Sharma R.,Rajasthan Agricultural University
Comparative Clinical Pathology | Year: 2014

Bovine mastitis caused by Staphylococcus aureus is a worldwide disease of high economic significance. These organisms possess many virulence factors allowing them to evade host immune system. In the present study, 28 S. aureus isolates from milk obtained from Holstein-Friesian (H-F) crossbred and Rathi (a native breed) cattle with clinical mastitis were characterized for their two virulence-associated genes: coa and spa. All the isolates were confirmed genotypically by 23S rRNA ribotyping in which a species specific amplicon of 1,250 bp was obtained. Polymorphism was recorded in coa and spa genes. The coa gene produced one amplicon in each isolate either of 510, 600, 710 or 850 bp size with more variability observed in the Rathi isolates. The AluI restriction endonuclease generated three and five RFLP patterns with isolates from H-F crossbred and Rathi cattle, respectively. The RFLP patterns obtained from similar amplicons in isolates from two breeds did not differ. PCR amplification of the X-region for spa gene yielded amplicons of seven different sizes: 206, 243, 262, 277, 292, 306 and 339 bp with calculated number of 7, 8, 9, 10, 10, 11 and 12 bp repeats, respectively indicating presence of highly pathogenic strains. Among all the spa types, four were common to both animal groups, one was unique to H-F crossbred cattle and two were unique to Rathi cattle. © 2012 Springer-Verlag London.

Kanakala S.,Indian Agricultural Research Institute | Verma H.N.,Jaipur National University | Vijay P.,Rajasthan Agricultural University | Saxena D.R.,RAK College Campus | Malathi V.G.,Indian Agricultural Research Institute
Applied Microbiology and Biotechnology | Year: 2013

Chickpea stunt disease caused by Chickpea chlorotic dwarf virus (CpCDV) (genus Mastrevirus, family Geminiviridae) is the most important biotic stress affecting chickpea crops worldwide. A survey conducted on the incidence of stunt disease clearly revealed high incidence of the disease with severe symptom expression in both indigenous and imported genotypes. To manage the disease in a sustainable way, resistant genotypes need to be bred by adopting objective and precise assessment of the disease response of chickpea genotypes. At present, evaluation of CpCDV resistance is conducted on the basis of natural infection in the field, which is bound to be erroneous due to vagaries in vector population. To circumvent the above problems, we devised an agroinoculation technique that involves the delivery of viral genomic DNA through Agrobacterium tumefaciens. An objective scoring system assigning quantitative value to different symptoms has been evolved to assess the response of chickpea genotypes to CpCDV inoculation. Using the inoculation and scoring techniques, we screened 70 genotypes, which helped in differentiating field resistance that is more due to resistance to vector feeding than resistance to the virus. © 2013 Springer-Verlag Berlin Heidelberg.

Kakani R.K.,National Research Center on Seed Spices | Sharma Y.,Rajasthan Agricultural University
Sabrao Journal of Breeding and Genetics | Year: 2010

The genetics of yield and related traits was studied in barley (Hordeum vulgare L.) by means of 9 x 9 half diallel (F1 and F2) progenies under four diverse environments. Additive-dominance model was fitted only for days to heading, plant height, flag leaf area, spike length, number of grains per spike, test weight and grain yield per plant for different environments and generations. Both additive (D) and dominance (H1 and H2s) components were significant for all the traits studied. However, the relative magnitude of dominance components was observed to be higher than additive components, which indicated the preponderance of dominance components in controlling the inheritance of characters under study. The (H1/D)1/2 values revealed the existence of over dominance for flag leaf area, number of grains per spike and test weight in F1 generation only, indicating the existence of over dominance. The values of 'F' exhibited an excess of dominant alleles in the parents for days to heading, flag leaf area, spike length, number of grains per spike and test weight. The environmental component 'E' was significant for most of the traits. The average degree of dominance (H1/D)1/2 was in range of over dominance. The ratio of H2/4H1 indicated symmetrically distribution of the genes for flag leaf area, spike length, number of grains per spike, test weight and grain yield per plant in some generations and environments. The value of h2/ H2 was observed less than one in days to heading, plant height, flag leaf area, number of grains per spike, test weight and grain yield per plant in different environments and traits, suggesting the role of dominant genes in controlling the inheritance of these traits, whereas, one gene or group of genes was controlled the inheritance of the remaining characters. The heritability estimates were relatively low to moderately high magnitude for different characters. Heritability estimates were high in F1 in comparison to F2, indicating the degree of heritability was influenced by the environment and generations. Thus, non-conventional breeding methods like recurrent selection by way of inter-mating most desirable segregants followed by selection or diallel selective mating or bi-parental mating in early segregating generations may be followed for improvement in barley.

Pareek N.,Rajasthan Agricultural University | Yadav B.L.,Rajasthan Agricultural University
Journal of the Indian Society of Soil Science | Year: 2011

Field experiment was conducted to workout the effect of different residual sodium carbonate (RSC) waters and organic manures on physicochemical properties, soil microbial biomass and yield of mustard in loamy sand soil during rabi seasons of 2006-07 and 2007-08. The treatments were: Four levels of RSC waters (2, 6, 9 and 12 mmol L-1) and five levels of organic manures (control, recommended dose of N fertilizer, 12 t FYM ha-1, 5 t poultry manure ha-1 and 4 t vermicompost ha-1). Result revealed that under application of 12 mmol L-1 RSC of irrigation water whereas the bulk density, pH, CEC and ESP increased significantly, saturated hydraulic conductivity, EC and organic carbon of soil at harvest exhibited a significant decreased. The soil biological activity like build-up and losses of microbial biomass C, N and P were reduced significantly, while, turnover rate of microbial biomass increased with all the levels of RSC of irrigation water; difference was not significant among water up to 6 mmol L-1 of RSC. The seed and stover yield of mustard also decreased significantly with increasing levels of RSC. Application of organic manures significantly reduced the saturated hydraulic conductivity; moisture retention at 33 kPa, and 1500 kPa; and available water and organic carbon content of soil. The bulk density, pH, ESP, turnover rate of biomass C, N and P decreased significantly, while CEC of soil at harvest increased significantly with application of 5 t poultry manure ha-1. Significant increase was noted in seed and stover yield of mustard under all the organic manures over control and recommended dose of N fertilizer.

Pareek N.K.,Rajasthan Agricultural University | Poonia B.L.,Rajasthan Agricultural University
Archives of Agronomy and Soil Science | Year: 2011

An experiment was conducted to discover the effect of farm yard manure (FYM), nitrogen and foliar spray of iron on the yield of irrigated groundnut in the arid region of Rajasthan, India, over two consecutive kharif (rainy) seasons in 2004 and 2005. The treatments comprised two levels ofFYMand five levels of nitrogen in the main plots and three levels of foliar spray of iron in the subplots. The results of the study revealed that the application of FYM at 15 t ha -1 improved the yield attributes, haulm yield and pod yield significantly by 7.9%. Increasing the level of nitrogen increased the mean number of pods per plant, shelling percentage, seed and pod indices progressively up to the highest level of 60 kg ha -1 applied in three splits leading to pod yield significantly higher by 1565 kg ha -1 over control. Foliar iron spray in combination with citric acid was helpful in correcting the chlorotic symptoms and improving the yield attributes of groundnut and pod yield by 14.84% significantly. Combining the application of FYM at 15 t ha -1, nitrogen at 60 kg ha -1 in three splits and foliar spray of 1% FeSO4 integrated with 0.1% citric acid improved benefit to cost ratio (B:C ratio) and recorded the highest net returns (60,159 Rs. ha -1) that was higher by 274% over absolute control. © 2011 Taylor & Francis.

Sharma B.N.,Rajasthan Agricultural University | Parihar N.S.,Rajasthan Agricultural University
Bulletin of Environmental Contamination and Toxicology | Year: 2013

Flubendiamide, a phthalic acid diamide protects the plants against a broad range of economically important lepidopterus pests and thiacloprid a second generation neonicotinoid is effective against the sucking insects, white flies and jassids. To estimate the residues of flubendiamide and thiacloprid on tomato, analytical methods were validated by conducting recovery studies, residues were quantified by using HPLC on C18 column and PDA at 260 λ. Residues of flubendiamide declined below detectable level of 0.01 mg kg-1 after 5 and 7 days of application at lower and higher dose with RL50 of 0.72 and 1.32 days, respectively. Thiacloprid residues reached below its detectable level of 0.01 mg kg-1 after 5 and 7 days of its lower and higher dose with RL50 of 0.83 and 1.79 days, respectively. © 2012 Springer Science+Business Media New York.

Reddy M.C.,Rajasthan Agricultural University
International Agricultural Engineering Journal | Year: 2013

Precision agriculture is an integrated agricultural management strategy where farmers can adjust input use and cultivation methods - including seed, fertilizer, pesticide, and water application, varietals selection, planting, tillage, harvesting - according to varying soil, crop and other field conditions. Advances in telecommunications technologies continue to help make farm life easier and to improve production efficiencies. The convergence of sensing, computing and communication technologies for agricultural applications has led to the creation of a new technology - Agricultural Infotronics Systems (AIS), which is a framework of wirelessly networked on-farm production data management systems to collect, process, and transmit the "ready-to- use" site-specific production data to the user on the machinery while performing the field operation. Thus, telecommunication technology is the backbone of precision agriculture. Precision farming involves integrated technologies such as GPS, GIS, remote sensing, and Variable Rate Technology (VRT), crop models, yield monitors and precision irrigation. In brief, precision agriculture refers to tailoring crop and soil management practices according to variation in crop and soil conditions within each field. This paper describes shortly about precision farming and its management.

Pathak A.K.,Rajasthan Agricultural University | Godika S.,Rajasthan Agricultural University
Indian Journal of Agricultural Sciences | Year: 2010

Studies were made using organic fertilizers, inorganic fertilizers, biofertilizers, nutritional supplement and a bioregulator on the growth and yield attributes of mustard crop and on the appearance of diseases. The use of biofertilizers (Azotobacter and PSB) and Trichoderma along with the recommended doses of fertilizers enhanced the plant growth, improved yield and revealed lesser incidences of Alternaria blight and white rust diseases. In another trial, organic manure resulted better growth, enhanced yield and reduced disease incidences in mustard crop. Plant growth and yield of mustard also promoted by basal use of elemental sulphur as a nutritional supplement, spray of thiourea (0.1 %) at 50% flowering stage of the crop, along with the adoption of recommended doses of fertilizers (ie NPK, 80:40:40 kg/ha).

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