IJSTR >> Volume 9 - Issue 10, October 2020 Edition

[Full Text]

AUTHOR(S)

Devianti, Yuswar Yunus, Ramayanty Bulan, Dewi Sartika T., Agustami Sitorus

KEYWORDS

Conservation, Erosion rates, Natural rainfall, Palm, Surface runoff.

ABSTRACT

Palm date (Phoenix dactylifera L.) began to be popularly developed in the wet tropics, especially in Aceh Province. The cultivation is carried out on sub-marginal land that cannot be grown by land cover crops with sloping land more than 10ï‚°. Without conservation efforts, gradually, the area used will experience degradation due to monoculture cultivation methods. The unavailability of data and conservation field testing in tropical date palm plantations makes it difficult for decision-makers and researchers to determine appropriate land conservation efforts. Therefore, this study aims to analyze the effect of one of the mechanical conservation methods in the form of silt pits in date palm plantations that are cultivated in the tropics. Two experimental plots (with and without using silt pit) with an area of 88 m2 each was designed at the date palm plantation in Blang Bintang sub-district, Aceh Besar Regency, Aceh Province. The parameters of natural rainfall, surface runoff, and erosion rates are measured, analyzed, and compared during the experiment. The results show that natural rainfall has a very significant effect in causing surface runoff and erosion rates that occur in date palm plantations. The application of the silt pit has been able to reduce the effects of surface runoff and erosion rates of 88.55%, 85.42%, respectively. A model for estimating erosion rates that occur on date palm plantations has also been developed with a reliable level of accuracy.

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