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 |
Potato is one of the most important and widely cultivated rabi crops of India. India ranks third in area and fourth in total potato production of the world. The increase in potato production in India has been very impressive by about 900 % during the last 50 years. Good productivity become under question due to poor moisture conservation and nutrient management practices. Present investigation was undertaken during rabi seasons of 2015-2016 and 2016-17 under the umbrella of Bidhan Chandra Krishi Viswavidayalaya. The experiment was laid down in split plot design, comprising different mulching treatments in main plot (viz. no mulch, stubble, rice straw and FYM mulch) and five different fertility levels (viz. 50,75,100,125 and 150 % RDF) were allocated in subplot with three replications. The CGR per unit area increased gradually from 50 days reaching the maximum between 60-70 days. There was a reduction in the rate of CGR at 80 DAP. With various main plot treatments, mulches application produced significant response amongst different plots. Significantly maximum weight of tubers per plant was obtained with rice straw mulch followed by stubble mulching, and showed parity amongst them. Highest weight of tuber was recorded with 125% NPK and showed parity with 100 % RDF and statistically better to all other options. Use of rice straw mulch, recorded the highest tuber yield (31.17 t/ha) though it remained statistically at par with stubble mulching practices (30.68 t/ha), and significantly better to all other treatments. The increasing levels of fertilizer levels from 50 to 125% RDF, gradually and significantly increased the yield. The maximum yield (33.08 t/ha) was registered with 125% RDF that remained statistically at par only with 100 % RDF and significantly better to other subplot treatments. Per rupee investment revealed that, higher B: C ratio (2.06) and net return (₹ 60,512/ha) found with rice straw along with 125 % fertility levels.
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