The Effect of Organic Manures, Azotobacter and Spacing on Growth of Solanum nigrum Linn

The present investigation was carried out in experimental area in Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan during 2004-2006. The study area falls in mid hill zone of HP, where temperature ranges between o 0-36 °C and annual rainfall varies between 1000-1300mm. Seven different treatments viz. T₁ (Control), T₂ (FYM), T₃ (Azotobacter), T₄ (FYM + Azotobacter), T₅ (Vermicompost). T₆ (Vermicompost + Azotobacter) and T₇ (Vermicompost + FYM) with three spacings viz. S₁ (30x30 cm) S₂ (30x45 cm) and S₃ (45x45 cm) were studied to observe the impact of these treatments on production parameters. The treatment of vermicompost + Azotobacter combination gave maximum plant height (62.12 cm), number of branches/plant (24.00), number of leaves/plant at flowering stage (200.0), number of fruits/plant (51.21), Maximum values for plant height (55.44 cm), number of branches/plant (21.92), number of leaves/plant at flowering stage (171.0), number of fruits/plant (44.08), were recorded at S₃ (45x45 cm) spacing. Overall, treatment of vermicompost + Azotobacter combination at S₃ (45x45 cm) spacing gave maximum plant height, number of branches/plant, number of leaves/plant at flowering stage and number of fruits/plant as compared to other treatments at different spacings.