69(4)2024 Relative competency of coated urea in addition to organic amendments in augmenting the productivity, profitability, quality and nutrient uptake of potato (Solanumtuberosum L.)grown undernewly formed alluvial soil conditions of West Bengal
DOI:
https://doi.org/10.59797/ija.v69i4.5699Abstract
A two-year study was carried out at the D block farm of BCKV, Nadia, West Bengal during the rabi season of 2019-20 and 2020-21 to study the combined effect of coated urea fertilizer and organic manure on the performance of potato crop grown under newly formed alluvial soil conditions of West Bengal. The experiment was laid out in randomized complete block design (RCBD) with four replications and treatment comprised of five treatment combinations such as T1- Control plot (N0); T2- 100% RDN through neem coated urea (NCU); T3- 75% RDN through NCU + 25% RDN through VC (vermicompost); T4- 100% RDN through polymer sulfur coated urea (PSCU); T5- 75% RDN through PSCU + 25% RDN through VC. The results showed that the application of 75% RD of N150P112K112 (N through PSCU) + 25% RDN through VC (10 t ha-1) recorded a significant impact on growth attributes, yield, and nutrient uptake. The highest taller plants (37.1 cm), maximum DMA (1024.7 g m-2), LAI (3.74) and CGR (27.0 g m-2 day-1), maximum tuber bulking rate (21.5 g m-2 day-1), with highest B grade tubers (13.41 Mg ha-1), maximum tuber yield (26.83 Mg ha-1) and haulm yield (4.56 Mg ha-1) were recorded in T5 which was significantly higher than other treatments. Similarly, the significantly highest amount of total NPK uptake by the crop (173.2, 55.9, and 585.3 kg ha-1), protein yield (63.4 kg ha-1), gross return (254.9 x 103Rs ha-1), net return (184.6 x 103 Rs ha-1) and B: C ratio (3.62) was noticed under T5 treatment as compared to the other treatments. Therefore, it is recommended to adopt a holistic nutrient management approach consisting of inorganic and organic in the proportion of 75% RD of N150P112K112 (N as PSCU) +25 % RDN through VC (10 t ha-1) in the split application of potato cultivation that optimizes the growth, yield, nutrient uptake, and quality eventually enhancing the agricultural productivity, profitability, food security, and sustainability.
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