National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Water deficit is one of the major abiotic stresses which adversely affect the crop growth and yield. Moisture stress induce the metabolic functions, such as reduced synthesis of photosynthetic pigments, accumulation of osmoprotectants like proline, decline in the Chlorophyll stability and alterations in physiological parameters. The Field experiment was conducted at Agricultural College and Research Institute, Madurai during summer season 2016 with the variety of SVPR - 4. To study the effect of moisture stress regimes on physiological parameters of Relative Leaf Water Content (RLWC), Chlorophyll Stability Index (CSI), Proline accumulation in leaf and Seed cotton yield. Experiment was laid out in split plot design with three replications. Moisture regimes were assigned to the main plots viz., Irrigation at IW/CPE ratio to 0.4 (I1) and 0.8 (I2). The subplot comprises with moisture management practices with Biochar application viz., B1-Cotton stalk biochar @ 5 t ha-1, B2-Cotton stalk biochar @ 5 t ha-1 + Crop residue mulch @ 5 t ha-1, B3-Cotton stalk biochar @ 5 t ha-1 + Crop residue mulch @ 5 t ha-1+ PPFM @ 500 ml ha-1 on 75 and 90 DAS, B4- Prosophis biochar @ 5 t ha-1, B5- Prosophis biochar @ 5 t ha-1 + Crop residue mulch @ 5 t ha-1, B6 - Prosophis biochar @ 5 t ha-1+ Crop residue mulch @ 5 t ha-1 + PPFM @ 500 ml ha-1 on 75 and 90 DAS and B7 – Control. The results of this study showed that RLWC and CSI of cotton were recorded higher and lower for Leaf accumulated Proline under irrigation at IW/CPE to 0.8 (I2) and Prosophis biochar @ 5 t ha-1+ Crop residue mulch @ 5 t ha-1 + PPFM @ 500 ml ha-1 on 75 and 90 DAS (B6). The same registered for higher values of crop yield.
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