Effect of plant spacing, organic manures and inorganic fertilizers and their combinations on growth, yield and quality of lettuce (Lactuca sativa).

摘要

The experiment comprised 3 plant spacings and 6 nutrition levels. Among the plant spacing, 45 cm x 60 cm recorded significantly higher values for plant spread, leaf area, number of leaves/plant, average leaf weight, petiole midrib weight, leaf weight/plant, dry matter content, vitamin C content and total carotenoids, whereas significantly highest leaf yield/plot and plant height were recorded at closest spacing of 45 cm x 30 cm due to accommodation of large plant population per unit area. Out of 6 nutrition levels, 50% recommended fertilizer dose+3 tonnes vermicompost/ha recorded significantly higher values for plant height, plant spread, leaf area, number of leaves/plant, average leaf weight, leaf weight/plant and leaf yield/plot during both the seasons. The highest leaf weight/plant was recorded in the treatment combination of 45 cm x 60 cm plant spacing with 50% recommended fertilizer dose+3 tonnes vermicompost/ha, whereas maximum leaf yield (26.04 tonnes/ha) was recorded in the treatment combination of 45 cm x 30 cm plant spacing with 50% recommended fertilizer dose+3 tonnes vermicompost/ha. While working out economics of each treatment, the highest net profit of Rs 213 032 and benefit:cost ratio of 4.49: 1 was obtained with treatment combination of 45 cm x 30 cm plant spacing with 50% recommended fertilizer dose+3 tonnes vermicompost/ha.