Effect of zinc and boron on improved physiological traits, productivity and phytoconstituents of carrot grown at Trans-Himalayan region
2024
Vivek, Kumar Tiwari | Khushboo, Kathayat | Narendra, Singh | Monisha, Rawat | Avnish, Kumar Pandey | Shailendra, K Dwivedi
Natural growth and development of plants in cold arid regions are affected by drought stress, limited water availability and sandy soils, thereby reducing growth and productivity. This study was aimed at examining the combined effects of boron and zinc supplementation on the physicochemical responses of carrots in high-altitude cold desert environments using different concentrations of these micronutrients. Experiment was carried out in randomized block design (RBD) and treatment means were differentiated using the Tukey’s test at a 0.05 level of probability. It was observed that in comparison to control, the foliar application of Borax @ 0.1% + ZnSO4 @ 0.5% significantly improved root diameter, average root weight, yield, sucrose content, total sugar, sweetness index, and total sweetness index in carrots. The maximum chlorophyll content (9.29 CCI) in carrot leaf was observed by foliar application of Borax @ 0.2% + ZnSO4 @ 1.0%, which is statistically at par with foliar application of Borax @ 0.1% + ZnSO4 @ 1.0% (9.27 CCI). However, the highest glucose and fructose content was observed with a foliar application of Borax @ 0.1%. The highest nitrate (351.08 mg/100 g) content was recorded in the combined foliar application of Borax @ 0.1% + ZnSO4 @ 0.5% (T5). Among the treatments, maximum values of sulphur (210.73 mg/100 g) in carrot root were observed in Borax @ 0.2% + ZnSO4 @ 0.5%.
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