Integrated nutrient management in wheat (T. aestivum L.) under saline and non saline irrigation water
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Date
2018
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CCSHAU
Abstract
A field experiment entitled “Integrated nutrient management (INM) in wheat (T. aestivum L.) under
saline and non-saline irrigation water” was conducted at Research Farm, Department of Soil Science, CCS
Haryana Agricultural University, Hisar during winter (rabi) seasons of 2011-12 and 2012-13. The experiments
carried out on WH-711, consisted of two levels of quality of irrigation water viz., canal water and saline water (8-
10 dS/m) and four inoculation and vermicompost treatments viz., no inoculation (control), vermicompost @ 5 t/ha,
Azotobacter ST3 + Pseudomonas P36 and Azotobacter ST3 + Pseudomonas P36 + vermicompost @ 5 t/ha in main
plots and three levels of fertilizer viz., 75, 100 and 125% RDF in sub-plots. The 24 treatment combinations were
tested in split plot design replicated thrice. Based on research investigations it was found that canal water
application significantly increased the parameters like plant stand/mrl, plant height, dry matter, plant tillers/mrl,
LAI, LAD, RGR, CGR, effective tillers/mrl, ear head length, number of grains/spike, grain, straw and biological
yields, available N, P, K, organic carbon and grain protein content as compared to saline water. The quality of
irrigation water had no significant effect on sedimentation value. Azotobacter ST3 + Pseudomonas P36 +
vermicompost @ 5 t/ha treatment resulted in significantly higher plant height, dry matter accumulation, plant
tillers per meter row length, LAI, LAD, effective tillers/mrl, number of grains/spike, grain, straw and biological
yields, available N, P, K, organic carbon and grain protein content in comparison to no inoculation. Inoculation
and vermicompost treatments had no significant effect on plant stand/mrl, NAR, RGR, ear head length and soil
EC. Different RDF treatments viz., 75, 100 and 125% RDF significantly affected plant height, dry matter
accumulation, plant tiller/mrl, LAI, LAD, effective tillers/mrl, number of grains/spike, grain, straw and biological
yields, available N, P, organic carbon and grain protein content. However, no significant effect on the plant
stand/mrl, RGR, NAR, sedimentation value, available K, K content in grain and straw and soil EC was observed.
None of the treatments had significant effect on the test weight, harvest index, hectolitre weight and soil pH during
both the years. Higher viable count of Azotobacter ST3 (cfu x 105) and Pseudomonas P36 (cfu x 106) was recorded
than initial value due to INM practices, being maximum in the treatment INVC 125 % RDF with canal water
application. From economics point of view, vermicompost + biofertilizer (Azotobacter and Pseudomonas) were the
most productive treatments, but biofertilizer (Azotobacter and Pseudomonas) treatments were the most economical
treatments with respect to increase in net profit and B:C ratio, at all fertility levels. The INM treatment INVC
125% RDF recorded maximum gross returns (Rs. 91,369 and 88,897/ha), but net returns were better in IN 125%
RDF (Rs. 58,003 and 52,482/ha) due to higher cost of vermicompost. Moreover, IN 100% RDF resulted in
maximum B:C ratio than IN 125% RDF due to higher expenditure incurred on extra dose of fertilizer IN 125%
RDF, during both the years, respectively. In future, with the increased availability of vermicompost by
establishment of small production units or cooperatives at farm or village level in due course of time may bring
down its cost and therefore, it may give better returns than worked in the present studies.
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