EFFECT OF NITROGEN AND CHITOSAN RAW MATERIAL POWDER ON THE PERFORMANCE ON YIELD OF GARLIC (Allium sativum L.)

Abstract

A field experiment was carried out at the research field of Sher-e-Bangla Agricultural University, Dhaka-1207, during the period from November, 2019 to April, 2020 to study the yield maximization of BARI Garlic-3 by improving growth characters using chitosan raw material powder under silty clay loam soil. The experiment was designed with twenty treatments using different level of chitosan raw material powder in the field. The used treatments were: T 1 (RD of N @ 77 kg/ ha), T (RD of N @ 89 kg/ ha), T 3 (RD of N @ 101 kg/ ha), T 4 (RD of N @ 113 kg/ ha), T 2 + 0.1 t CHT Powder/ha), T 6 (T 2 + 0.1 t CHT Powder/ha), T 7 (T 3 5 (T 1 + 0.1 t CHT Powder/ha), T + 0.1 t CHT Powder/ha), T 9 (T 1 + 0.5 t CHT Powder/ha), T 10 (T + 0.5 t CHT Powder/ha), T 11 (T 3 + 0.5 t CHT Powder/ha), T 12 (T 4 2 + 0.5 t CHT Powder/ha), T

+ 1 t CHT Powder/ha), T 14 (T 2 + 1 t CHT Powder/ha), T 15 (T + 1 t CHT Powder/ha) T 16 (T 4 + 1 t CHT Powder/ha), T 17 3 (1 t CHT raw material Powder/ha), T (1.5 t CHT raw material Powder/ha), T 19 (2 t CHT raw material Powder/ha) and T (2.5 t CHT raw material Powder/ha). The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Result revealed that application of chitosan raw material powder increased plant height, fresh and oven dry weight of tops, bulb diameter, number of cloves/bulb, fresh and dry weight of bulb and yield/ha. With increasing the doses of chitosan raw material powder, most of the morphological, reproductive and yield attributes were increased, whereas control plants showed the lowest value of the above parameters. Most of the morphological, growth and reproductive attributes were recorded maximum in the T . The experimental results revealed that treatment T (N 113 kg/ ha + 1 t CHT Powder/ha) produced highest seedling height (64.33 cm), maximum number of leaves (7.77), bulb diameter (14.28 cm) , fresh weight of bulb (24.16 g), number of cloves per bulb (23.52), dry weight of bulb (5.8 g), fresh weight of tops (12.03 g), dry weight of tops (3.01), yield (11.07 ton/ha) and soil properties like N content (0.2%), soil organic carbon (0.55%), soil organic matter (0.95%). Minimum values was found in T 16

treatment. Finally, the study concluded that application of chitosan raw material powder in field, soil has significant effect on growth, yield and yield contributing characters of garlic