Indian Journal of Agronomy


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    ABSTRACT: A 3-year field experiment was conducted at the Punjab Agricultural University, Ludhiana, during the rainy season of (kharif) 2006 to 2008, to study response of soybean [Glycine max (L.) Merrill] to different levels of sulphur and born. The experiment comprised of 13 treatments including all the combinations of 4 sulphur (S) levels (10,20, 30 and 40 kg/ha) and 3 boron (B) levels (0.5, 1.0 and 1.5 kg/ha) and absolute control (no S; no B). The highest grain yield, protein, oil content, gross and net returns of soybean were recorded with 40 kg S/ha, which were statistically at par with 30 kg S/ha but significantly higher than other levels of sulphur. The productivity in 40 kg S/ha was enhanced 61.9% over the absolute control. The boron level of 1.5 kg/ha recorded the highest grain yield, gross and net returns, being statistically at par with 1.0 kg B/ha but significantly higher than 0.5 kg B/ha. The highest S and B uptake were recorded in 40 kg S/ha and 1.5 kg B/ha respectively. The highest grain yield recorded in 40 kg S/ha and 1.5 kg B/ha was statistically at par with 40 kg S/ha and 1.0 kg B/ha, 30 kg S/ha and 1.0 kg B/ha, 20 kg S/ha and 1.5 kg B/ha and 30 kg S/ha and 1.5 kg B/ha treatments but was significantly higher than all the other combinations of sulphur and boron.
    Indian Journal of Agronomy 03/2014; 59(1):101-105.
  • Indian Journal of Agronomy 09/2013; 58(3):327-333.
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    ABSTRACT: Nutrient management is one of the major problem of the sodic land due to low organic matter status and toxicity of sodium, which reduced the availability of other nutrients and affects the soil properties. A field experiment was conducted to evaluate the integrated nutrient management options in sodic soil at Shivali Village of C.S.A. University of Agriculture and Technology, Kanpur during 2005-06 and 2006-07. The physico-chemical properties of the soil were pH(2.5) - 8.9, EC(2.5) - 0.61 dS/m, organic carbon - 3.6 g/kg, CaCO3-1.24%, GR-7.92 t/ha, sand-56%, silt-28%, clay-16% (sandy loam), available N-156 kg/ha, available P-25.3 kg/ha, available K-235 kg/ha and available Zn-0.78 ppm. Results indicated that plant height, fertile tillers, biomass/hill, length of ear, test weight, grain and straw yield of rice (Oryza sativa L.) and wheat {Triticum aestivum (L.) emend. Fiori & Paol} significantly increased by application of fertilizer on the soil test basis in comparison to farmers practice. Further increased the yield and yield attributing characters when organic manures (FYM, pressmud and NADEP compost) added @ 5 t/ha with the recommended doses of fertilizers. Application of organic manure (FYM) integrated with recommended dose of fertilizers and biofertilizers (PSB + BGA/ Azotobacter) further increased the yield and yield attributing characters of rice and wheat which was similar to 125% recommended dose of fertilizers. The maximum grain yield of rice and wheat (5.46 and 3.57 t/ha) was recorded with application of NPKZn based on soil test + FYM @ 5 t/ha + PSB + BGA. Similar trends were also recorded in case of nutrient uptake. In case of microbial populations, maximum bacterial population (94.0 × 105/g soil) and Azotobacter (51.5 × 102/g soil) was recorded with application of NPK Zn based on soil test + FYM @ 5 t/ha + PSB + BGA and maximum PSB count (42.0 × 102/g soil) was recorded in with application NPK Zn based on soil test + PSB + BGA. The Actinomycetes population was not affected by the different treatments. Improvement in soil properties (pH, EC, OC) and soil fertility status (NPK and Zn) was recorded when chemical fertilizers were integrated with organic manures.
    Indian Journal of Agronomy 06/2013; 58(2):137-145.
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    ABSTRACT: A field investigation was carried out at New Delhi during kharif seasons of 2010 and 2011 to evaluate the effect of combinations of different levels and sources of nitrogen on aromatic hybrid rice (Oryza sativa L.) ’PRH- 10′. Eleven treatments consisting of ten combinations of two nitrogen levels (75 and 150 kg/ha), three essential oils coated prilled ureas {uncoated prilled urea, citronella (Cymbopogon nardus L. Rendal) oil coated urea (CCPU) and palmarosa (Cymbopogon martinii) oil coated prilled urea (PCPU)} at two coating thicknesses (500 and 1,000 mg/kg prilled urea), and an absolute control, were allocated in a randomized block design with three replications. Averaged over the two years, CCPU1000@N150 recorded the highest values of plant height, tillers/m2and leaf area index at 60 and 90 days after sowing (DAS), panicles/m2, panicle length, grain weight/panicle, 1,000-grain weight, and grain (4.16 t/ha) and straw yields. On an average, CCPU1000@N150 recorded 9.7 and 8.3% higher panicles/m2 and grain yield, respectively over PU@N150. Appreciably higher grain yield of CCPU1000@N150 over other treatments and control was mainly due to a considerable improvement in most of the yield attributing characters over other treatments. The highest net returns (63 x103/ha) and B:C ratio (2.35) were also recorded with CCPU1000@N150, which were 12.9 and 11.9% higher, respectively over PU@N150.
    Indian Journal of Agronomy 01/2013; 58(3):316-321.
  • Indian Journal of Agronomy 11/2012; 57:9 - 31.
  • Indian Journal of Agronomy 11/2012; 57(3rd IAC Special Issue):72-82.

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