1Department of Spices and Plantation Crops, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia 741 252
2Department of Agronomy, Uttar Banga Krishi Viswavidyalaya, Mohanpur, Nadia 741 252
*Corresponding author's present address: Department of Vegetable and Spice Crops, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar 736 165. E-mail: suchanddatta@rediffmail.com.
The study revealed that irrigation level had prominent effect on moisture extraction pattern. Higher amount of moisture extracted from surface layer irrespective of irrigation treatment and depletion of soil moisture increases with increasing the level of irrigation. Morphological, yield attributing characters, water use efficiency and seed yield are significantly influenced by different levels of irrigation. The highest water use efficiency was recorded under no irrigation and it was lowest in higher level of irrigation at IW/CPE of 1.0. Water use efficiency of IW/CPE ratio was somewhat lower as compared to growth stages treatment with the same level of irrigation. The highest seed yield was recorded under IW/CPE ratio of 1.0 and the lowest under no irrigation treatment. The highest gross returns, net return and benefit: cost ratio was recorded at IW/CPE ratio of 1.0. When a irrigation was applied each at branching + pre flowering + seed development stage, the benefit: cost ratio was closely nearer with IW/CPE ratio of 1.0 because of the lower cost of production.
Coriander, irrigation, evapo-transpiration, growth, yield
