Effect of Plant Spacing and Fertilization Rates on Growth and Yield of New Bambara Groundnut Line
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Abstract
This research study focuses on identifying appropriate cultivation methods for 23-1C-2-2 Bambara groundnut line. The objectives were to investigate the optimal plant spacing and fertilization rates suitable for this line. The findings aim to provide guidance for farmers and serve as data for certification purposes. The experimental design was 3 x 3 Factorial in RCBD with 9 treatment and 4 replications. The first factor was 3 plant spacing, which were 40 x 40, 50 x 50 and 60 x 60 cm. The second factor were 3 fertilization rates, which were 0.5, 1.0 and 1.5 times of the recommended rate (the recommended rate was 3-9-6 kg/rai of N-P2O5-K2O). The experiment was conducted during the rainy season of 2022 at Songkhla Field Crops Research Center. The results showed that interactions were not detected between the effect of plant spacing and fertilization rates on the growth, yield and yield components of 23-1C-2-2 Bambara groundnut line. Using a spacing of 60 x 60 cm resulted in a maximum plant canopy of 50.84 cm. While the 40 x 40 cm produced the highest fresh pod yield and dry pod yield at 422 and 123 kg/rai, respectively. Applying all three fertilizer rates did not result in significant differences in fresh and dry pod yields. The average fresh pod yield ranged from 309 to 328 kg/rai, while the average dry pod yield ranged from 91 to 94 kg/rai. Additionally, using a plant spacing of 40 x 40 cm resulted in the highest average shelling percentage of 66.91%. Therefore, the 23-1C-2-2 Bambara groundnut line should be a spacing of 40 x 40 cm and adding fertilizer 1.5-4.5-3 kg/ rai of N-P2O5 -K2O. because fresh and dry pod yields are non-statistically significant difference. and reduce costs from using fertilizer in Bambara groundnut.
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This article is published under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0), which allows others to share the article with proper attribution to the authors and prohibits commercial use or modification. For any other reuse or republication, permission from the journal and the authors is required.References
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