Punjab region’s crop productivity potential and soil health has been compromised through the continual NPK and imbalance secondary nutrients application. Decreased application of secondary and micronutrients have resulted in severe nutritional deficiencies in crop and soil, and therefore, lowered the overall crop productivity. For investigation, open field experiments were conducted during 2022–23 and 2023–24 under randomized block design (RBD) at research farm, UIAS to evaluate the tomato growth performance and nutrients uptake to varying levels of CaSO4 (75 and 150 kg) and MgSO4 (50 and 100 kg) amended with NPK sources (Urea, SSP and MOP). Nine treatments with three replications comprised of varying Ca and Mg levels along with NPK sources have been selected and tested for two years. Results showed that the Ca and Mg based treatments showed high vigor in improving the crop growth and improved the soil nutrients pool. T5 (100% RDN NPK + Mg @ 100 kg ha-1) showed its supremacy over the other treatments with maximum plant height of 199.73 cm at maturity, fruit/plant (27.64 and 28.51 kg), yield/plant (2.64 and 2.99 kg) and fruit yield/100 m2 (1056.96 and 1081.29 kg). Similar treatment (T5) significantly improved the leaf and fruit NPK content over the sole NPK based treatment. Data on leaf and fruit Ca and Mg content revealed that maximum leaf Ca (2.27 and 2.29%) in T4, fruit Ca (2.16 and 2.18%) in T3, leaf Mg (1.26 and 1.29%) and fruit Mg (0.41 and 0.45%) was recorded under T7 treatment. Moreover, T7 treatment also showed its potential with highest Ca and Mg accumulation of 491.42 and 253.98 ppm in soil in respective years. Therefore, the study identified the T5 and T7 treatments as potent returning higher crop production and quality indices and also restored the soil with balanced Ca: Mg ratios along with other nutrients.
Shubham, Atin Kumar, Uday Sharma· Journal of the Indian Societ...· 0 citations
Drought constrains wheat productivity, making the identification of genetically variable and yield-associated traits important for selection under contrasting moisture regimes. This study evaluated 50 advanced bread wheat genotypes, including five standard checks, under rainfed and irrigated environments during the Rabi season of 2022–23 using a randomised block design with three replications. Two physiological and fourteen yield-related morphological traits were assessed using analysis of variance, phenotypic and genotypic coefficients of variation, broad-sense heritability, genetic advance, correlation, and path coefficient analyses. The phenotypic coefficient of variation exceeded the genotypic coefficient of variation for all traits in both environments. Canopy temperature depression at 14 days after heading (CTD 2) showed the highest PCV/GCV values, at 39.90/33.42% under rainfed and 34.26/29.45% under irrigated conditions. Productive tillers per plant and CTD 2 combined high heritability with comparatively large genetic advance in both environments. Under rainfed conditions, grain yield per plot was strongly and positively correlated with harvest index (r = 0.721), productive tillers per plant (r = 0.698), and biological yield per plot (r = 0.626). Under irrigation, the strongest positive associations were with peduncle length (r = 0.611), spike length (r = 0.606), flag leaf length (r = 0.563), and biological yield per plot (r = 0.552). Path analysis identified harvest index as the largest positive direct contributor under rainfed conditions (0.8029) and biological yield per plot under irrigated conditions (0.8620). These findings support consideration of these traits in selection across contrasting moisture regimes.
Lovneesh Choudhary, M. Dalal, Vikram Singh et al.· International Journal of Pla...· 0 citations
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