Agroforestry can be developed for climate change adaptation and mitigation. Farmers in Jepara Regency have long been developing sugar palm agroforestry for starch. Increasing the use of sugar palm and the low knowledge of farmers about the potential of sugar palm plants are a threat to the existence of sugar palm agroforestry. This study aims to inventory the potential distribution of sugar palm with the support of remote sensing and field surveys in Pakis Aji, Bangsri, and Kembang sub-districts which was carried out in August-December 2020. The interpretation results used Landsat 8 imagery and Google Earth images in 1161 sugar palm objects with the largest number in Bangsri District. Remote sensing accuracy testing with the Omission-Commission method obtained a value of 90.8%, which means the accuracy value is very high. The correlation test between the value of vegetation density (NDVI) and the survey results obtained a value of R2 = 0.575 with a significance value of 0.00 <0.05. The overall potential of palm plantations is predicted to be 5740 m3 with an area for the development of sugar palm agroforestry of 10,008.9 ha.
ABSTRAK Penelitian dilakukan untuk mengetahui profil kelembaban tanah secara horizontal pada areal piringan tanaman kelapa sawit (0-200 cm dari pangkal batang). Lokasi penelitian di Pusat Penelitian Kelapa Sawit (PPKS) antara 21 Agustus - 18 September 2018. Pengamatan dilakukan menggunakan Soil Moisture Meter (SMM) MP 306 pada piringan pohon dengan jarak 50 cm, 100 cm, 150 cm, dan 200 cm dari pangkal batang dua tanaman kelapa sawit berumur 14 tahun. Data curah hujan dan unsur iklim lainnya diperoleh dari AWS Davis Vantage Pro-II Plus. Interval waktu pengukuran kelembaban tanah dan unsur iklim adalah 15 menit. Analisis deskriptif dilakukan untuk menganalisis pola keterkaitan antara kelembaban tanah dengan unsur iklim khususnya curah hujan. Selain itu, dilakukan analisis korelasi akumulasi curah hujan pada setiap kejadian hujan dengan fluktuasi kelembaban tanah untuk mengetahui zona piringan pohonyang paling dipengaruhi curah hujan. Hasil penelitian menunjukkan curah hujan berkorelasi positif terhadap peningkatan kelembaban tanah. Sementara itu, rerata kelembaban tanah pada radius 50 cm; 100 cm; 150 cm; dan 200 cm berturut-turut adalah 28,41%; 33,50%, 36,75% dan 38,26%. Zona piringan pohon dengan jarak 150 cm hingga 200 cm dari pangkal pohon sebaiknya lebih dipertimbangkan sebagai zona peletakan pupuk karena memiliki kelembaban tanah yang lebih tinggi. Selain itu, perlu dilakukan upaya untuk menjaga kelembaban tanah melalui pembuatan rorak dan guludan, aplikasi bahan organik, maupun manajemen vegetasi penutup tanah khususnya di gawangan mati dan area di antara baris tanaman.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.