DIFFERENTIAL RESPONSE OF MANURES IN TRANSFORMATION OF DTPA AND TOTAL ZINC AND IRON IN RICE TRANSPLANTED ON LIGHT TEXTURED SOILS OF PUNJAB
作者： M. K. Dhaliwal , S. S. Walia , S. S. Dhaliwal , J. S. Manchanda
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摘要: The present research study was conducted with a prime objective to investigate the effect of different manures on transformations Zn and Fe in rice grown light textured soils. To achieve these objectives, laboratory studies were soil samples collected during Kharif 2009 season from an experiment farm Department Soil Science, PAU, Ludhiana. For this ten type viz. straw (RS), wheat (WS), maize (MW), cowpeas green manure (CGM), Dhaincha (DGM), yard (FYM), poultry (PM), (RSM), vermi compost (VC) biogas slurry (BGS), which used ameliorate deficiency, helped their transformation when incorporated before transplantation. biomasses added dry weight basis. Three samplings at interval 45 days, starting first day analyzed for basic parameters using standard procedures. These also subjected estimation DTPA total fractions atomic absorption spectrometer (Varian AAS- FS 240 Model).The results our reported that DTPA-Zn level decreased sampling times under all manures. There drastic reduction third application VC but it remained above critical Zn. crop did not show any deficiency as treatments its limit (0.6 mg kg -1 ). higher content DTPA-Fe by PM (52.1mg ) followed DGM (41.0 (38.0 At time maximum tillering stage, fourth week paddy With manures, highest CGM (39.7 further (34.8 BGS (32.8 On other hand (10017 (9652 (9303 decomposition release more transformed unavailable oxidized environment. This buildup progressed nearly two over 1 st advancement decomposition. Application FeSO 4 failed remove Fe-chlorosis plants. Our concluded transplantation is good practice suitable mode
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