National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
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. However, pooled data analysis revealed that, significantly higher nitrogen, phosphorus and potassium availability per hectare (394.12, 74.80 and 323.01 kg/ha) were recorded in wider spacing 45 × 45 cm but it was statistically on par with 60 × 30 cm for phosphorus and potassium availability per hectare. The results of two years (2016-17 and 2017-18) experimental data concluded that wider spacing of 30 × 30 cm is optimum planting geometry for cultivation of dolichos bean
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