Asian Journal of Agriculture and Allied Sciences

The experiment aims to study the effect of spacing and organic manures on the growth, yield and economics of wheat (Triticum aestivum L.). The field experiment was conducted at the Agronomy Research Farm, Agriculture Department, Jigyasa University (Formerly Himgiri Zee University), Dehradun, Uttarakhand during the Rabi season 2021- 2022.  The experiment consisted of three different spacing (20 cm x 10 cm, 22.5 cm x 10 cm and 22.5 cm x 15 cm) and four levels of organic manure (0, 10 t/ha FYM, 10 t/ha VC and 10 t/ha FYM + 10 t/ha VC). Twelve treatments were laid down in Factorial Randomized Block Design with three replications of each. Results of the field experiment revealed that the highest yield parameters of the wheat crop were observed in spacing 22.5 cm x 15 cm in number of tillers, plant height, dry weight, grain yield, straw yield and harvest index which reached 372.8 tillers m^-2, 83.3 cm, 973.7 g, 3.68 t/ha, 5.12 t/ha and 41.57 % while the spacing of 20 cm x 10 cm show lowest yield parameters. The organic manure levels OM₄ (10 t/ha FYM + 10 t/ha VC) showed a significant superiority for the characteristic of plant height, spike length, test weight, and biological yield, with means of 87.5 cm, 13.5 cm, 42.86 g, and 9.54 t/ha, respectively. The treatment of T₁₂ (22.5 cm x 15 cm + 10 ton/ha FYM + 10 ton/ha VC) recorded the highest gross return (Rs. 142905 Rs/ha), net returns (Rs 83740.2 Rs/ha) and B: C ratio (1.41) respectively.