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Effect of integrated nutrient management on growth, yield and quality of aromatic rice (Oryza sativa L.)

KrishiKosh

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Title Effect of integrated nutrient management on growth, yield and quality of aromatic rice (Oryza sativa L.)
 
Creator Kumar, Pankaj
 
Contributor Kumar, Vinod
 
Subject Rice
Nutrients management
 
Description A field experiment was carried out during two consecutive kharif season of 2008 and 2009 at Crop Research Centre of Rajendra Agricultural University, Pusa to find out the "Effect of integrated nutrient management on growth, yield and quality of aromatic rice (Oryza sativa L.)". Twelve treatments T1-100% recommended dose of fertilizers (100 kg N + 40 kg P2O5 + 20 kg K2O ha-1), T2-100% recommended dose of nitrogen through vermicompost, T3-100% recommended dose of nitrogen through FYM, T4-75% recommended dose of nitrogen through inorganic source + 25% recommended dose of nitrogen through vermicompost, T5-50% recommended dose of nitrogen through inorganic source + 50% recommended dose of nitrogen through vermicompost, T6-25% recommended dose of nitrogen through inorganic source + 75% recommended dose of nitrogen through vermicompost, T7-75% recommended dose of nitrogen through inorganic source + 25% recommended dose of nitrogen through vermicompost, T8-50% recommended dose of nitrogen through inorganic source + 50% recommended dose of nitrogen through FYM, T9-25% recommended dose of nitrogen through inorganic source + 75% recommended dose of nitrogen through FYM, T10-100% recommended dose of fertilizer + 25% recommended dose of nitrogen through vermicompost, T11-100% recommended dose of fertilizer + 25% recommended dose of nitrogen through FYM, T12-100 kg N + 60 kg P2O5 + 40 kg K2O ha-1 were tested in Randomized Block Design replicated thrice.
Growth parameters such as number of tillers m-2 and dry matter accumulation per square metre were found maximum in the treatments getting 25 per cent additional N through vermicompost or FYM over and above 100 per cent RDF. The treatment T1-100 per cent recommended dose of fertilizers (RDF) and T12-N100 P60 K40 were found to be equally well. LAI was comparatively greater in the treatments receiving higher proportion of organic manures especially in later stages of growth. Plant height was not affected significantly. CGR, RGR and NAR were also better in the same set of treatments which showed higher tillering and dry matter accumulation.
Number of effective tillers m-2, weight of panicle and number of grains per panicle were found highest under the treatment T10, T11 and T12. Length of panicle and 1000-grain weight were not affected significantly by the different treatments.
Grain and straw yields were also better in the aforesaid set of four treatments. Harvest index did not vary significantly.
NPK concentrations in grain and straw were not affected significantly due to different treatments. NPK uptake were again higher in treatments in which additional 25 per cent recommended dose of nitrogen was given as vermicompost or FYM over and above 100 per cent RDF, closely followed by N100 P60 K40 and RDF. Substitution of N through organics significantly influenced organic carbon and available nitrogen status of soil during both years of experimentations.
Kernel length and kernel breadth before and after cooking were higher in treatments getting higher proportion of inorganic-N. Hulling and milling percentage and shape index before and after cooking were not affected markedly. Head rice recovery were higher in the treatment receiving higher proportion of organic-N.
Net return was the highest in the treatment getting N100 P60 K40 kg ha-1 very closely followed by RDF (N100 P40 K20) but B : C ratio were the highest in RDF closely followed by N100 P60 K40. The treatments getting 25 per cent additional N as vermicompost or FYM fell far behind in respect of net return and B : C ratio.
Thus, on the basis of two years experimentation the recommended dose of fertilizer (100 kg N 40 kg P2O5 and 20 kg K2O ha-1) appear to be adequate for aromatic rice. Benefit of organic manure comes through changes in soil properties for which a minimum of four to five years application would be essential.
 
Date 2016-09-08T14:21:17Z
2016-09-08T14:21:17Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76089
 
Language en
 
Format application/pdf
 
Publisher Rajendra Agricultural University