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|Authors:||Thorat, Vijaykumar Narayan|
|Title:||EFFECT OF IRRIGATION WATER QUALITY ON SOIL PROPERTIES, NUTRIENT UPTAKE AND YIELD OF WHEAT IN SAWARGAON SOIL SERIES|
|Publisher:||MAHATMA PHULE KRISHI VIDYAPEETB RAHURI 413 7 2 2 DIST:-AHMEDNAGAR Maharashtra State (India)|
|Abstract:||A field experiment was conducted with a view to study the effect of water quality with organic sources viz., farmyard manure (FYM) and press mud cake (PMC) on soil properties, nutrient uptake and yield of wheat in Sawargaon soil series. The experiment was conducted at the experimental farm of Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar, during rabi season (1993-94). Natural water of canal (EC 0.51 dS m~1) and well water (EC 1.98 dS m~1) irrigation sources were used independently and alternatively during different critical growth stages of wheat. Results of soil analysis at flag leaf stage - - 2- revealed that the well water increased EC, HCOg , CI , SO42 , Ca 2+ and Na + in saturation paste extract of soil compared with canal water, alternate canal + well and well + canal water at both surface and subsurface soil depths. The alternate canal + well and well + canal water irrigation however, superior to well water alone for decreasing soluble salts in soil. The organic sources helped to reduce the salinity/sodicity hazard due to well water irrigation. The PMC proved better than FYM to reduce the SAR of soil. The irrigation water sources had similar effect on available N, P and K content of soil. The well water decreased Fe, Mn, Cu and Zn content of soil significantly compared with canal water. Organic sources helped in build up of all the fertility parameters. The canal water was superior to other irrigation water sources in respect of N, P, K, Fe, Mn, Cu and Zn concentration in wheat at flag leaf stage. While organic sources helped to increase the concentration of these nutrient in wheat. The wheat grain yield and straw yield were decreased with rise in EC and SAR of irrigation waters but they increased with application of organic sources. Results of straw and grain analysis after harvest of wheat showed that the canal water proved superior than well water in increasing N, P, K, Fe, Mn, Zn and Cu concentration. The maximum reduction in nutrient uptake was observed in well water treatment. The alternate canal + well and well + canal water treatments did not differ significantly from one another in respect of nutrients uptake, but values were significantly higher than well water alone. The PMC was found better than FYM in increasing uptake of Cu and Zn by grain. Results of soil analysis after harvest of wheat showed that by using well water EC, HC03", Cl", S04 2~, Ca2+, Mg Na and SAR of saturation paste extract increased, while available Fe, Mn, Cu and Zn content of soil decreased compared with other irrigation water sources. The FYM proved better than PMC in respect of available N, P and K content of soil whereas, PMC was found superior than FYM in respect of Fe, Mn, Cu and Zn content of soil. The well water increased the bulk density and decreased hydraulic conductivity and infiltration rate significantly compared with canal water, while well water with organic sources helped in improving these physical properties of soil. The positive significant correlations were observed between ECe and Cl" (r2 = 0.449*), S04 2" (r2 = 0.495*), Na+ (r2 = 0.813*) and SAR (r2 = 0.381*) of saturation paste extract of soil, whereas negative significant correlations were observed between ECe and DTPA extractable mieronutrient contents of soil. The negative significant correlations were also observed between ECe and uptake of nutrients (phosphorus, manganese and copper) and grain yield.|
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