<![CDATA[Water balance is the relationship between inflow and outflow in a particular area from the air circulation process. Water balance plays an important role in assessing the suitability of agricultural land, determining optimal planting and harvesting times, and optimizing irrigation both in terms of quantity and timing. This study aims to determine the monthly balance of sweet corn fields in a year using the Thornthwaite-Mather method in South Singkawang District. The study was conducted at three sweet corn fields with an area of ± 1 ha each using a purposive sampling method with 9 sample points. Climate data in the form of rainfall (2015-2024) and monthly average temperature were used to calculate evapotranspiration and air balance. The results showed that air surplus conditions were dominant throughout the year in the third field. Land 1 (Inceptisol, 0-10 masl) recorded the highest surplus of 225.88 mm (October) with a slight deficit of -0.04 mm (April), land 2 (Ultisol, 0-10 masl) experienced a full surplus of up to 264.64 mm (November) without a deficit, and land 3 (Inceptisol, 10-29 masl) had a maximum surplus of 286.6 mm (January) without a deficit. High rainfall of 159-324 mm/month exceeds the average evapotranspiration of 119 mm/month, supporting the water needs of sweet corn of 236-257 mm per cycle and allowing for intensive planting of three seasons per year. Keyword: Evapotranspiration; Sweet Corn; Water Availability; Water Balance]]>
Copyrights © 2026
