Khanna A.,Indian Agricultural Research Institute |
Sharma V.,Banasthali University |
Ellur R.K.,Indian Agricultural Research Institute |
Shikari A.B.,Sher-e-Kashmir University of Agricultural Sciences and Technology |
And 14 more authors.
Indian Journal of Genetics and Plant Breeding | Year: 2015
Basmati is a premium quality rice of India which is highly priced in the international market. Pusa Basmati 1, an elite Basmati rice variety is highly susceptible to rice blast caused by Magnaporthe oryzae. Therefore, pyramiding blast resistance genes is essential to effectively combat the blast disease and increase the durability of resistance genes. The blast resistance genes Pi9 and Pita have been earlier demonstrated to be effective in Basmati growing regions of the country. Therefore, in the present study, monogenic-near isogenic lines Pusa 1637-18-7-6-20 and Pusa 1633-3-8-8-16-1 carrying Pi9 and Pita, respectively, were intercrossed to generate pyramided lines through marker assisted foreground, background and phenotypic selection for recurrent parent phenotype. The pyramided lines carrying Pi9+Pita were found to be either at par or superior to the recurrent parent Pusa Basmati 1 for agro-morphological, grain and cooking quality traits. Further, these pyramided lines were also found to show resistance against three virulent pathotypes of M. oryzae namely, Mo-nwi-kash 1, Mo-nwi-lon2 and Mo-ei-ran1, when evaluated under artificial inoculation conditions as well as in the natural epiphytotic conditions of uniform blast nursery at two locations. The developed pyramided lines are the potential sources of blast resistance genes in the Basmati improvement program and can also be released for commercial cultivation after required testing. © 2015, Indian Society of Genetics and Plant Breeding. All rights reserved.
Sharma S.P.,Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya |
Sharma S.K.,Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya
Communications in Soil Science and Plant Analysis | Year: 2016
ABSTRACT: Manganese (Mn) is an essential micronutrient needed for plant growth and development, but it can be toxic to plants in excess amounts. Long-term fertilizer experiment and intensive cropping alter the soil properties and also affect its plant-available Mn contents. To understand the dynamics of Mn under long-term fertilizer experiment the present study was initiated during 1972 at the experimental farm of College of Agriculture, CSK HPKV, Palampur (32° 6′ N latitude and 76° 3′ E longitude) in a randomized block design with 11 treatments replicated three times with a maize-wheat cropping sequence. The soils of the experimental area in the beginning of the experiment were acidic in reaction and taxonomically classified as Typic Hapludalfs. Surface (0.0–20 cm) and subsurface (20–40 cm) soil samples taken after the harvest of maize (kharif, 2008) were analyzed for pools of Mn and chemical indices of soil quality using standard analytical methods. Besides, the pools of Mn were also determined in the composite soil samples drawn from adjacent fallow plots. Results showed that all the pools of Mn were noticeably greater in farmyard manure (FYM)–amended plots compared to zero-fertilized plots. Although the residual fraction was found to be the most dominant fraction, organically bound and exchangeable forms were found to play major roles in the nutrient supply, crop productivity, and nutrient uptake. The greatest productivity of maize (2008) and wheat (2008–09) was recorded under the 100% nitrogen, phosphorus, and potassium (NPK) + FYM treatment. FYM and lime treatments resulted in significantly greater uptake of all the nutrients by both the crops compared to other treatments. The organically bound fraction was found to have the greatest significant and positive correlation with yield and nutrient uptake of maize and wheat crops. Further regression analysis studies revealed that the organic form was the most important pool contributing towards the variation in the parameters. Exchangeable and organically bound forms contributed significantly towards diethylene triamine pentaacetic acid (DTPA)–extractable Mn. © 2016 Taylor & Francis.
Badiyala A.,Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya |
Raj D.,Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya
Indian Journal of Horticulture | Year: 2013
The present investigation was carried out as two year trials at farmer's fields in village Kachhiari (Kangra) in Himachal Pradesh to study the seasonal incidence, varietal susceptibility and management of Earias vittella (Fabricius) infesting okra crop through insecticides, biopesticides and a bioagent. Studies revealed that the okra shoot infestation varied between 1.78 to 2.24% during first year and 0.82 to 1.56% during second year, while the fruit infestation varied between 1.83 to 35.85% and 1.23 to 29.64% during the respective years. Peak fruit infestation (%) as well as peak larval population per fruit was observed in third to fourth week of August during the two seasons. Among the 10 okra varieties/ hybrids screened for relative susceptibility to E. vittella, Tulsi and Varsha Uphar registered lower mean per cent fruit borer infestation as well as higher yield as compared to the rest. Among the different treatments, cypermethrin (0.01%), endosulfan (0.07%) and Bacillus thuringiensis var. kurstaki (1.96 × 107 IU ha-1) + endosulfan (0.035%) sprays were found efficacious against the pest.
Singh D.,Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya |
Dixit S.P.,Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya
Indian Journal of Horticulture | Year: 2010
The field experiments were conducted during kharif 2004 and 2005 on Turmeric (Curcuma longa L.) variety T-12 at research farm of Department of Soil Science CSK HPKV, Palampur (H.P) on silty clay loam soil with eleven treatments including a control. The pooled results of two year indicated that maximum curcumin (3.31%) and oil content (2.85 %) were found in the treatment 100 % NPKS + 20t FYM ha-1 as soil mulch. Whereas, starch (8.11 %), protein (4.92 %) and curing percentage (21.53 %) were found highest at 100 % NPKS + 20t FYM ha-1 as soil incorporation.