A pot culture experiment was conducted at the Experimental Farm located in Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar campus during kharif season 2018. This study was carriied out in Completely Randomized Design with three replications comprised of nine treatment combinations of sewage sludge (SS), aquatic weed compost (AWC) and inorganic fertilizers. However, in this study, it was initiate that the conjoint use of sewage sludge with chemical fertilizer (T5) recorded maximum build-up of soil macro nutrients (NPK), plant growth and quality parameters. However, the micro-nutrient concentrations in soil exposed to sewage sludge and aquatic weed compost were significantly higher than those in the untreated plots, with highest concentration found in sole application of sewage sludge (T3). All the micro nutrients studied were within the acceptable limits and did not overcome the maximum levels of phytotoxic. This experiment concludes that the application of sewage sludge and aquatic weed compost did not have any adverse impact on fruit quality and it was suggsetted to for the improvement of plant growth and soil fertilit
Enormous quantities of organic wastes such as sewage sludge (SS) and aquatic weed compost (AWC) are produced in large quantities on the banks of Dal Lake Kashmir. It is a challenging task for authorities to manage them properly. Therefore, the study’s purpose was to evaluate these organic wastes agricultural use potential. The experiment was laid out in a randomized complete block design with three replications comprised of nine treatment combinations of SS, AWC and inorganic fertilizers. In the present study, the conjoint use of SS with chemical fertilizer recorded maximum build-up of soil microbial biomass carbon (MCB), urease and dehydrogenase activity with treatment T1. There were significant correlations between soil MCB and from urease and dehydrogenase activity (r2 = 0.95 and 0.97; P < 0.05), respectively. The micronutrient and heavy metal concentrations in kale exposed to SS and AWC were significantly higher than those in the untreated plants, with the highest concentration found in sole application of SS (T7). However, heavy metal concentrations were within the acceptable limits and did not overcome the maximum phytotoxic levels. The study’s finding leads to conclusion that SS along with chemical fertilizers (T1) can improve the enzymatic activity in soil, quality parameters and nutrient content in plants thereby enhancing the yield.
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