International Journal on Advanced Science, Engineering and Information Technology, Vol. 11 (2021) No. 6, pages: 2197-2203, DOI:10.18517/ijaseit.11.6.15030

Soil Moisture Analysis and Rainwater Management at Clove Plantation to Meet the Water Requirement of Clove Plants During Dry Season

Buhari Umasugi, Sugeng Prijono, - Soemarno, - Ariffin

Abstract

In 2015, the clove plants on Ternate Island experienced a drought and dead in the dry season. This study aimed to discover the potential for rainwater and soil moisture as well as the management to meet the water needs of clove plants. This research was conducted from October 2018 to March 2019 on Ternate Islan. The soil data (pF 2.4 and 4.2) and effective depth at 12 land units. The climate data for 2008 to 2017. The data analysis used the water balance approach of the Thornthwaite-Mather method, the Penman-Monteith method, Darcy's law of the SPAW model, and the CropWat 8.0 software. The results showed that the total rainfall was 2307.3 mm/year. The average soil moisture storage (STo) was 134.5 mm. During the dry season, the total rainfall was 1660.4 mm/year. The potential evapotranspiration was 1561.2 mm/year. The water needs for the clove plantation in the tree phase during the dry season was 640.1 mm/year or 53.3 mm/month and increased from the water needs for clove plants in normal conditions which was 607.1 mm/month. The strategies for managing the water needs for the clove plants during dry season were harvesting rainwater during surplus in December and January for storage and increasing soil moisture during water deficit in February and March, using the biopore infiltration hole technology made from organic material from clove leaf litter. Further research on the water needs for clove plants in the vegetative phase.

Keywords:

Clove plants; water management; soil moisture; biopore; plant water requirement.

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