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Nutrient uptake and soil fertility status as influenced by planting geometry in Dolichos bean

The field experiment was conducted at experimental plot of Department of Vegetable Science, K R C College of Horticulture, Arabhavi, Belgaum district during Rabi season of 2016-17 and 2017-18 to study the effect of different spacing levels on nutrient uptake and soil fertility status of dolichos bean (Dolichos lablab L.) in medium black soils of Arabhavi”. Two year field experiments with seven planting geometry consisting of 60 × 15 cm, 60 × 30 cm, 45 × 15 cm (control), 45 × 30 cm, 45 × 45 cm, 30 × 15 cm and 30 × 30 cm were laid out in randomized block design replicated thrice. Data recorded on yield attributes and pod yield were significantly influenced by various plant spacing levels. Wider spacing level (60 × 30 cm) significantly increased the number of primary branches, dry matter content, number of pods per plant and pod protein content whereas, narrow spacing levels increased plant height and pod yield per hectare as well as higher total N, P and K uptake in first (2016-17), second season (2017-18) and even in pooled analysis. The available nutrient status such as pH, Electrical conductivity, organic carbon, N, P and K in soil after harvest was found to be improved due to wider spacing levels during both the growing seasons and most suitable soil pH, EC and maximum values of organic carbon were recorded in a spacing of 30 × 30 cm. | Nutrient uptake and soil fertility status as influenced by planting geometry in Dolichos bean