Suhani Parihar, Matukdhari Singh, Ajanta Borah, Deepak Lohar4 and Ashutosh Vyas
Abstract
The present investigation titled âIntegrated Nutrient Management (INM) on Morphological Attributes of Black gram Vigna mungo L. (Hepper)â in the Malwa Region (M.P.). The present experiment was conducted at Crop Research Cafeteria, under Mandsaur University, Mandsaur (Madhya Pradesh). Mandsaur (Madhya Pradesh) which is situated at latitude 240C 4â36.61ââN, longitude 7504â9.46ââ E and at an altitude of 442.16 meters above the mean sea level. A randomized block design with 8 treatments and 3 replications was used, consisting of 24 plots measuring 3 à 3 m, with 30 à 30 cm row and plant spacing. Black gram variety T-9 was sown at 15 kg ha{¹.The treatments included T1: Control, T2: 100% RDF + Rhizobium, T3: 100% Vermicompost + Rhizobium, T4: 75% Vermicompost + 25% RDF + Rhizobium, T5: 50% Vermicompost + 50% RDF + Rhizobium, T6: 100% NADEP + Rhizobium, T7: 75% NADEP + 25% RDF + Rhizobium, and T8: 50% NADEP + 50% RDF + Rhizobium. Treatments included control, 100% RDF + Rhizobium, 100% Vermicompost + Rhizobium, and combinations of Vermicompost or NADEP with RDF + Rhizobium. The experiment was laid out using a randomized block design with three replications. The gross plot size was 3.0mx 3.0m = 9.00 m2, while the gross plot area 3.6mà 4.5m = 16.20 m2. At 45 DAS, the maximum plant height was recorded in T6 (100% NADEP + Rhizobium) with 60.33 cm. At harvest, the highest plant height was again recorded in T6 (64.14 cm). The highest plant population was recorded in T6 (18.00 plants m{²). Growth indices showed marked differences due to nutrient management practices. The maximum relative growth rate (RGR) was recorded under T6 (0.049 g g{¹day{¹). Crop growth rate (CGR) was highest in T6 (12.73 g m{² day{¹), followed by T8 (12.26 g m{² day{¹) and T4 (11.66 g m{² day{¹), whereas the lowest CGR was recorded in the control treatment T1 (8.06 g m{² day{¹). Overall treatments viz.,T8 (50% NADEP + 50% RDF + Rhizobium), followed by T5 (50% Vermicompost + 50% RDF + Rhizobium), T6 (100% NADEP + Rhizobium) and T7 (75% NADEP + 25% RDF + Rhizobium). However, T1 reported the lowest values in most of the parameters.