Date Received: 08-02-2025
Date Published: 21-02-2025
##submissions.doi##: https://doi.org/10.1234/3wcbt347
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Improving the Uptake of Nitrogen, Phosphorus and Potassium and Yield of Blueberries by using Biochar on Alluvial Soil in the Mekong Delta
,
Le Minh Ly
Keywords
Alluvial soil, biochar, blueberry, N-P-K uptake, Mekong Delta
Abstract
Blueberry (Vaccinium tenellum) is grown as ornamental flowers in some gardens in the Mekong Delta. The growth of blueberry is only suitable on soil with good aeration and drainage, however, most Mekong Delta agricultural soils have high clay content (56%), so using materials to improve the physical environment for blueberry growing soil is necessary. The objective of this study was to evaluate the best rate of biochar for the N, P, and K uptake and the yield of blueberriy. A green house experiment at the School of Agriculture, Can Tho University was arranged in a completely randomized block design with four replications, biochar was used at tree rates of 0, 10, and 20 t ha-1 (biochar_0, biochar_10, and biochar_20) and N, P and K fertilizers were applied with the formula 45:20:20 kg ha-1. Results show that mixing biochar into alluvial clay soil at 10 ha-1 and N, P and K fertilizers applied with the formula 45:20:20 kgha-1 effectively increased the uptake of N, P and K, promoting growth and blueberry yield.. It is suggested that combination of organic fertilizer with biochar may improve the soil nutrient environment for blueberry grown on alluvial soil in the Mekong Delta.
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