Analysis of water balance to determine cropping patterns of food crop in sub-watershed Tenggarong, Kutai Kartanegara regency

Akas, Pinaringan Sujalu and Hidayanto, Muhamad and Fiana, Yossita and Akas, yekti pulihasih (2019) Analysis of water balance to determine cropping patterns of food crop in sub-watershed Tenggarong, Kutai Kartanegara regency. Bulgarian Journal of Agricultural Science, 25 (1). pp. 215-221. ISSN 1310-0351

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Official URL: https://www.agrojournal.org/

Abstract

Growing periods can be determined using water balance analysis to decrease harvest risk in certain area. Generally, there are two types of land use for crop, i.e. irrigated land and non-irrigated land. This research was aimed to determine water input, water use and water loss, consumptive use crop water balance and designing a cropping pattern on rainfed paddy fi eld at Wa- tershed Tenggarong. Determination of fi eld capacity and permanent wilting point using soil texture data was input through Bouyoucos hydrom- eter methods. The calculation of land water balance according to Thornthwaite and Mather (1957) was employed to determine the agro-climate condition, particularly the dynamics of soil moisture content to plan a general cropping patterns was used based on monthly data. The planting time period is the water holding capacity > 50% from available water. Water balance monthly indicated that this area has potential growing season about 9 months, water surplus 8 months (439.6 mm year-1 ) and water defi cits about 3 months (59.7 mm year -1 ). In these area, paddy could be planted twice a year without irrigation. Whereas when there are climate anomalies, paddy fi elds can be cultivated on certain land (swamps or suburbs of lake/river).

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian > Program Studi Agroteknologi
Depositing User: Dr Akas pinaringan Sujalu
Date Deposited: 08 Jul 2021 05:34
Last Modified: 08 Jul 2021 05:34
URI: http://repository.untag-smd.ac.id/id/eprint/81

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