CD Tesis

pemanfaatan ekstrak daun ketapang (Terminalia catappa L.) sebagai herbisida alami dalam perspektif ilmu lingkungan (ekologi, sosial, dan ekonomi) untuk mendukung pertanian berkelanjutan

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The intensive use of chemical herbicides in agriculture has had serious impacts on the environment, human health, and ecosystem sustainability. These impacts include soil, water, and air pollution, as well as health risks due to exposure to hazardous active ingredients. As a solution, this study examines the potential of ketapang leaf extract (Terminalia catappa L.) as an environmentally friendly organic herbicide. The allelochemical compounds in ketapang leaves have been proven effective in inhibiting weed growth, and are safer and more economical than synthetic herbicides. Thus, ketapang extract herbicide is considered to have high potential as an alternative weed control method supporting sustainable agriculture. This study aims to identify the optimal concentration of natural ketapang leaf extract herbicide in suppressing weed growth, analyse the percentage of survival, height, number of shoots, fresh weight, and dry weight of weeds, evaluate public perception of its use, and assess the economic aspects of producing the herbicide. The study was conducted at the UNRI Gobah Campus and the author's residence in Pekanbaru. The environmental aspect used a 4 x 2 factorial RAL with 3 replications, with factors including herbicide concentration (Gramoxone, ketapang extract 25%, 50%, 75%) and weed type (Cynodon dactylon L. and Cyperus rotundus). The data were analysed using analysis of variance and Duncan's test at 5%. The social aspects were assessed through interviews with 10 farmers using a questionnaire, while the economic aspects were analysed using the full costing method. The results of the study indicate that ketapang leaf extract is optimal as an organic herbicide, with the highest effectiveness at a concentration of 75%, which suppresses weed growth to 100% mortality on the 12th day, capable of matching Gramoxone, which works on the 6th day. The content of flavonoids, alkaloids, saponins, and tannins inhibits weed metabolism, although species such as Cyperus rotundus and Cynodon dactylon remain resistant at low concentrations. In addition to being optimal, this extract is environmentally friendly and low in residues, making it a viable alternative for sustainable weed control. Farmers are interested in trying ketapang leaf extract herbicide if it is proven to be effective in suppressing weed growth and saving on herbicide purchase costs, as it is affordable at Rp16,800.00 per litre compared to chemical and organic herbicides sold online. The use of ketapang leaf extract is more recommended as it can serve as an alternative to replace the use of chemical herbicides, which are environmentally friendly, safe for health, and affordable in price.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2310246626

Penerbit

Pekanbaru : UNRI – PASCA – Ilmu Lingkungan., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2310246626

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

ILMU LINGKUNGAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Rahmat

Versi lain/terkait

Lampiran Berkas

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