Quality and Physiological Responses of Lai Saak (Brassica juncea var. integrifolia) to Nutrient Management
P. Das, I. Sarma, S. Gogoi, S. Dutta, S. Das, S. Indurthi
Journal of Experimental Agriculture International · pp. 347–353 · Published 17 Dec 2025
10.9734/jeai/2025/v47i123938Abstract
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).
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