Studies on fertigation and crop geometry in French bean (Phaseolus vulgaris L.) under poly-net house
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Date
2023
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Punjab Agricultural University
Abstract
The present investigation was conducted at Vegetable Research Farm and Biochemistry Laboratory, Department of Vegetable Science, Punjab Agricultural University, Ludhiana with the objectives to investigate the effect of crop geometry on yield and quality traits of French bean and to find out the optimum level of NPK fertilizers for French bean under poly-net house. “FBP VAR 2‟‟ was comprised as plant material. The field experiment was laid out in a split plot design and included 30 treatment combinations. The treatments were replicated three times. The treatments included three bed types having different bed top width of 105, 75 and 37.5 cm with furrow of 30 cm under main plots, five fertigation levels i.e. 0, 60, 80, 100 and 120% of NPK under sub plots and two plant spacings of 30 and 45 cm under sub-sub plots. From the present investigation, it was observed that bed spacing of 105+30 cm, drip fertigation at 100% NPK and plant spacing at 45 cm resulted in significantly highest yield attributing characters like number of pods per plant, pod length, pod weight, pod width and fresh pod yield per plant. On the other hand, the highest fresh pod yield per acre was obtained under bed spacing of 75+30 cm, drip fertigation at 100% NPK and plant spacing at 30 cm due to increased plant population m-2. Mostly all the quality parameters i.e. protein content, fibre content, sugar content, calcium content, iron content, NPK content and dry matter content were observed to be significantly highest in F4 (100% NPK) treatment, but non-significant with bed spacing and plant spacing. The economic analysis during both seasons showed that cost benefit ratio with treatment combination of 75 cm bed spacing, 100% NPK and 30 cm plant spacing (1:3.30) was observed to be the highest among all treatments. Thus, it may be concluded from the present investigation that bed spacing of 75+30 cm, drip fertigation at 100% NPK and plant spacing at 30 cm is beneficial to improve productivity and quality of French bean.
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Vishavjeet Singh (2023). Studies on fertigation and crop geometry in French bean (Phaseolus vulgaris L.) under poly-net house (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.