Journal of Experimental Agriculture International

A field experiment was conducted at the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat, during the year 2024, to study the impact of nutrient management on nutritional and physiological traits of laisaak. The experiment was laid out in a randomised block design (RBD) with eight treatments replicated thrice. The treatments were T₁: Control, T₂: 60:30:30 Kg NPK/ha, T₃: 60:30:30 Kg NPK/ha + FYM @5t/ha, T₄: 60:30:30 Kg NPK/ha + VC @3t/ha, T₅: 45:25:25 Kg NPK/ha + FYM @5t/ha, T₆: 45:25:25 Kg NPK/ha + VC @3t/ha, T₇: 30:15:15 Kg NPK/ha + FYM @5t/ha and T₈: 30:15:15 Kg NPK/ha + VC @3t/ha. Nutritional traits such as ascorbic acid (163.18mg. 100g^-1), vitamin A (17.20mg. 100g^-1), protein (37.22%), crude fiber (37.22%), total ash (20.69%), N (5.95%), P (1.67%), K (2.67%), Fe (146.49mg. 100g^-1), Zn (20.00mg. 100g^-1), Mn (57.46mg. 100g^-1), Cu (8.28mg. 100g^-1) as well as Ca (36.37%) content were recorded maximum in the treatment T₄. Physiological traits such as total chlorophyll (0.94mg. g^-1) and RLWC (89.51%) were also found to be maximum in the same treatment. It can be concluded from the study that the combined application of the recommended dose of NPK and vermicompost in laisaak enhanced the nutritional qualities. The treatment T₄ showed 61.90%, 74.97%, 72.55% and 43.98% increases in ascorbic acid, vitamin A, protein and iron content as compared to control (T₁).