Effect of Irrigation and Chemical Fertilizer on Growth and Productivity of Teak (Tectona grandis L.) in Punjab

An experiment was conducted in July, 2005 at Kharkan Research Station, Hoshiarpur to find out the effect of irrigation regimes viz., no irrigation (I₀), irrigation after 10 days (I₁₀), irrigation after 20 days (I₂₀) and irrigation after 30 days (I₃₀), and fertilizer (Urea) doses viz., no fertilizer (F₀), 50 g/tree in July (F₁), 25 g two times during July and August (F₂), 16 g three times during July, August and September (F₃), 100 g in July (F₄), 50 g two times during July and august (F₅), 33.3 g three times during July, August and September (F₆), 150 g in July (F₇), 75 g two times during July and August (F₈) and 50 g urea/tree, three times during July, August and September (F₉). Fertilizer dose in the 8 9 second and third year was increased by 50 per cent to the quantity applied during previous year. During first year irrigation regimes had no significant effect on collar girth and height of teak, however, fertilizer dose of 33.3 g Urea/tree, three times in July, August and September, gave maximum collar girth (2.43 cm). The interaction, 33.3 g Urea/tree and no irrigation gave higher collar girth (2.89 cm) and tree height (1.13 m), up to the age one year. Summarized results indicate that irrigation regime I₁₀ for first and second year and I₂₀ during third year were better for growth of teak trees. The fertilizer dose 33.3 g applied three times, during July, August and September, every year resulted in higher diameter and height growth and hence the maximum volume and MAI.