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Influence of mulching and iron nutrition on aerobic rice grown under aerobic rice-wheat cropping system

KrishiKosh

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Title Influence of mulching and iron nutrition on aerobic rice grown under aerobic rice-wheat cropping system
 
Creator Gulab Singh Yadav
 
Contributor Y. S. Shivay
 
Subject rice, cultivation, crop residues, iron, grain, yields, irrigation, biological phenomena, crops, wheats
 
Description T-8549
Field experiments were carried out during 2008-09 and 2009-10 at the research farm of IARI, New Delhi to study the influence of mulching and iron nutrition on productivity, nutrient uptake, quality and economics of aerobic rice-wheat cropping system. The treatments comprising of 4 methods of rice production, viz. bare soil (no mulch), wheat straw mulch (5 t ha-1), Sesbania aculeata mulch (5 t ha-1 on fresh weight basis) and paddy control (puddled and flooded) as main plots and 5 treatments of Fe fertilization viz. control (no iron sulphate), iron sulphate 50 kg ha-1, iron sulphate 100 kg ha-1, iron sulphate 50 kg ha-1 + two foliar sprays of 2.0% iron sulphate and three foliar sprays of 2.0% iron sulphate as sub-plots, replicated thrice in a split plot design. The highest growth parameters, yield attributes and grain yield (5.36 & 5.46 t ha-1) of rice were recorded with paddy control followed by Sesbania aculeata mulch. Physical and biochemical quality parameters improved significantly due to puddling and mulching and the values of all these parameters were higher when rice grown with Sesbania aculeata mulch as compared to rest of the treatments. When rice grown with Fe fertilization, increased growth parameters, yield attributes, grain and straw yield and quality parameters in aerobic rice. Application of FeSO4 50 kg ha-1 + two foliar sprays of 2.0% FeSO4 were found to be the best in terms of all the yield attributes, grain yield (5.05 & 5.10 t ha-1) and physical and chemical quality parameters of aerobic rice. Thus, growing of Sesbania aculeata mulch and adequate Fe fertilization with FeSO4 50 kg ha-1+ two foliar sprays of 2.0% FeSO4 enhanced yield and quality of aerobic rice. Methods of rice production and Fe nutrition had significant effect on concentration and uptake of nutrient viz. N, P, K, S, Zn, Mn, Cu and Fe in grain and straw of aerobic rice. Paddy control recorded higher nutrient concentration and uptake as compared to other treatment. Application of FeSO4 50 kg ha-1 + two foliar sprays of 2.0% FeSO4 recorded higher Fe concentration in grain as well as in straw of aerobic rice. Fe use efficiencies were significantly affected due to methods of rice production and iron nutrition treatments.
Residual effects of mulch and application of FeSO4 100 kg ha-1 resulted in better growth and yield attributes, yields, concentration of N, P, K, Fe, Zn, Mn and Cu in wheat grain, straw and their uptake, protein content and net returns of the succeeding wheat. The residual effects of wheat straw mulch resulted in significantly higher grain yield (4.13 & 4.25 t ha-1) of succeeding wheat which was on par to Sesbania aculeata mulch. The
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productivity of wheat did not influence significantly due to residual effect of different levels and time of FeSO4 application. However, residual effect of FeSO4 100 kg ha-1 application led to the highest yield (3.93 & 4.03 t ha-1). Mulching with wheat straw mulch and Sesbania aculeata mulch and FeSO4 50 kg ha-1 + two foliar sprays of 2% FeSO4 recorded the highest system productivity, nutrient uptake, Fe use efficiencies, net returns and B: C ratio in aerobic rice-wheat cropping system. It may be concluded that growing of aerobic rice either with Sesbania aculeata or wheat straw mulch and application of FeSO4 50 kg ha-1 + two foliar sprays of 2.0% FeSO4 at maximum tillering and flowering stage would be a be
 
Date 2016-12-14T09:15:22Z
2016-12-14T09:15:22Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/90016
 
Format application/pdf
 
Publisher IARI,DIVISION OF AGRONOMY