Muhammad Abral Kasthalani, Riza Adrianoor Saputra, Yulia Padma Sari

Review: Potensi Leucaena leucocephala Sebagai Penyubur Lahan Kering Suboptimal Kalimantan Selatan

Introduction

Review: potensi leucaena leucocephala sebagai penyubur lahan kering suboptimal kalimantan selatan. Telusuri potensi Lamtoro (Leucaena leucocephala) sebagai pupuk hijau dan kompos organik untuk menyuburkan lahan kering suboptimal di Kalimantan Selatan. Kaya NPK, Lamtoro tingkatkan kesuburan tanah.

Abstract

Indonesia is a country that has many islands in its territory, and also has various characteristics of land and soil types. Kalimantan is one of the main islands in Indonesia, but the area has land that is less than optimally utilized as horticultural agricultural land, namely suboptimal dry land. Suboptimal land itself is land that is minimal in nutrients and microorganisms, with a relatively low level of fertility, Lamtoro (Leucaena leucocephala) is a plant that is still related to legumes which are often used as intercrops or hedges by farmers, is a plant that produces many positive sides for the soil. Lamtoro itself can be used as a source of green fertilizer and organic compost which is very beneficial for soil health and fertility, moreover plants can provide a natural source of local nutrients, and all parts of this plant can be used for soil fertility. This study uses a qualitative method by displaying data from previous studies, then presented in a short form about how the influence and potential of Lamtoro plants on soil fertility. The results of Nitrogen Production in lamtoro stands based on the data  shown a content of 0.46% -0.47%, Phosphorus content in lamtoro stands ranges from 6-8.7 ppm and Potassium content in lamtoro stands ranges from 0.36-0.52 me / 100g. Lamtoro plants have good potential for suboptimal dry land, because they are able to provide organic matter and nutrients needed by the soil such as Nitrogen, Phosphorus, Potassium, and micronutrients.

Review

This review article effectively addresses a critical agricultural challenge in Indonesia: the underutilization of suboptimal dry lands, particularly in South Kalimantan. The paper's objective is to synthesize existing knowledge on the potential of *Leucaena leucocephala* (Lamtoro) as a natural and sustainable solution for enhancing soil fertility in these nutrient-poor environments. Employing a qualitative methodology, the authors meticulously compile and present data from previous studies, offering a concise overview of Lamtoro's beneficial impact on soil health. A significant strength of this review lies in its clear articulation of *Leucaena leucocephala*'s multifaceted benefits. The article highlights its value as a source of green fertilizer and organic compost, directly addressing the nutrient deficiencies and microbial scarcity characteristic of suboptimal dry lands. The quantitative data presented regarding Nitrogen (0.46%-0.47%), Phosphorus (6-8.7 ppm), and Potassium (0.36-0.52 me/100g) content within Lamtoro stands provides compelling evidence of its capacity to supply essential macronutrients. This positions Lamtoro as a highly promising, locally accessible resource for improving soil structure, fertility, and overall ecological balance in the targeted region. While a valuable synthesis, the review's reliance solely on qualitative data from previous studies means it primarily consolidates existing information rather than presenting novel empirical findings. To build upon this foundational work, future research could focus on conducting localized field trials in South Kalimantan to validate these findings under specific regional conditions, assess optimal application rates, and evaluate long-term impacts on crop yields. Further investigation into the economic feasibility for local farmers, potential challenges in adoption, and the comparative advantages against other soil amendment strategies would also enhance the practical applicability of this promising approach. Overall, this review serves as an important step in promoting sustainable agricultural practices in Indonesia.

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