Sarma, IraIndurthi, Sandeep2024-07-112024-07-112023https://krishikosh.egranth.ac.in/handle/1/5810211788A field experiment was conducted at the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat in the year 2023 to study the effect of integrated nutrient management on growth, yield and quality of amaranthus. The experiment was laid out in a randomized block design (RBD) with three replications. The treatment combinations were T0: Control, T1: 100% RDF (60:30:20kg NPK/ha) + FYM 5t/ha, T2: 100% RDF + Vermicompost 4t/ha, T3:100% RDF+ Vermicompost 2t/ha + PSB + Azotobacter, T4: 75 % RDF +FYM 5t/ha, T5: 75 % RDF + Vermicompost 4t/ha,T6:75 % RDF + Vermicompost 2t/ha +PSB + Azotobacter,T7: 75 % RDF instant mixture with incubated vermicompost 1t/ha and T8: 100% RDF instant mixture with incubated vermicompost 1t/ha. The characters studied were plant height, plant width, total leaves per plant, fresh weight of individual leaf, dry weight of individual leaf, weight of leaves per plant, weight of stem per plant, plant weight, leaf to stem ratio, stem girth, number of branches per plant, days to harvest, leaf yield, stem yield and crop yield per hectare. Among the treatments, the treatment T8 recorded maximum plant height (47.08cm, 66.62cm and 85.85cm), plant width (23.73cm, 33.80cm and 44.75cm) at 30DAS, 45DAS and at harvest, respectively. Maximum number of leaves (78.00) was exhibited by T8 and was at par with treatment T3 (77.77). The highest fresh weight (0.99g) and dry weight (0.23g) of individual leaf were recorded by the treatment T8. Maximum weight of leaves (68.42g/plant), weight of stem (90.17g/plant), plant weight (158.59g/plant) and leaf to stem ratio (0.76) was exhibited by T3. Among different treatments, the treatment T8 showed maximum stem girth (2.4 cm), number of branches (6.79) and maximum number of days to harvest (54 days). The highest leaf weight (6.84kg), stem weight (9.02kg) and plant weight (15.86kg) per plot was observed in the treatment T3. Similarly, maximum leaf yield (142.54q), stem yield (187.85q) and crop yield (338.62q) per hectare were also exhibited by the treatment T3. The integrated application of organic, inorganic and bio-fertilizers influenced the nutritional content of amaranthus significantly. The highest vitamin C (74.17mg/100g) and crude fibre (0.91%) content was exhibited by the treatments T7 and T4, respectively. Maximum calcium (9.86%) and iron (23.4mg/100g) content was observed in the treatment T8. Soil parameters viz., soil pH, organic matter and available nitrogen were maximum in T3 with values 5.39, 0.93% and 269 kg/ha, respectively, however, available phosphorus and available potassium were maximum in T6 with values 37kg/ha and 140kg/ha. Economic analysis showed that the highest net return (Rs. 338942.00) was found in the treatment T8 with a benefit cost ratio of 4.06. Even though the treatment T3 exhibited the highest yield but the benefit- cost ratio (3.34) was smaller than T8 due to higher cost of production in T3.EnglishThesis