Improvement of Soil Fertility Through Jackfruit-Based Multistoried Agroforestry Practices in Terrace Ecosystem

Annals of Bangladesh Agriculture Pub Date : 2022-03-21 DOI:10.3329/aba.v25i1.58159

MM Islam, M. Miah, S. Saha, Ma Rahman, M. Akanda, M. Kamruzzaman

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Abstract

This study aimed to evaluate the soil chemical properties of a jackfruit-based multistoried agroforestry system of a farmer’s field in Belabo upazila of Narsingdi district located in the central terrace ecosystem of Bangladesh. The three-storied of crops viz. upperstorey - jackfruit trees; middlestorey - papaya, lemon, mandarin and sweet orange and lowerstorey - seasonal vegetables such as eggplant, bottle gourd and ash gourd were included in the system. The experiment was conducted in a randomized complete block design with three replications. There were five treatments covering agroforestry with four orientations and sole cropping (jackfruit trees). The agroforestry system improved the chemical properties of top soil layer compared to the sole cropping with jackfruit trees. Soil pH (4.62), total nitrogen (0.081%), organic carbon (0.61%), organic matter (1.05%), phosphorus (4.23 ppm), sulphur (10.17 ppm), calcium (2.27 meq/100g), magnesium (0.46 meq/100g) and potassium (0.52 meq/100g) were recorded in the agroforestry systems that were higher than those of the soil properties of sole cropping (jackfruit trees). The result revealed that practicing agroforestry can help in improving the soil fertility status for successful sustainable crop production. Ann. Bangladesh Agric. (2021) 25 (1) : 105-115

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梯田生态系统以菠萝蜜为基础的多层农林业改良土壤肥力

本研究旨在评估孟加拉国Narsingdi区Belabo upazila农民田间以菠萝蜜为基础的多层农林复合系统的土壤化学特性。三层的农作物，即上层——菠萝蜜树;中层为木瓜、柠檬、柑橘和甜橙，低层为时令蔬菜，如茄子、葫芦和冬瓜。试验采用完全随机区组设计，设3个重复。5个处理覆盖农林业4个朝向和单作(菠萝蜜树)。与单纯种植菠萝蜜相比，农林复合系统改善了表层土壤的化学性质。农林业系统土壤pH值(4.62)、全氮(0.081%)、有机碳(0.61%)、有机质(1.05%)、磷(4.23 ppm)、硫(10.17 ppm)、钙(2.27 meq/100g)、镁(0.46 meq/100g)和钾(0.52 meq/100g)均高于单作(菠萝蜜)土壤。结果表明，实行农林业有助于改善土壤肥力状况，有利于作物的可持续生产。孟加拉国阿格利司。(2021) 25 (1): 105-115

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Annals of Bangladesh Agriculture

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