Analysis Of Water Balance To Determine Cropping Patterns Of Food Crop In Sub-Watershed Tenggarong, Kutai Kartanegara Regency
| Main Authors: | Sujalu, Akas Pinaringan, Hidayanto, M., Fiana, Yossita, Asih, Akas Yekti Pulih |
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| Format: | Proceeding PeerReviewed application/pdf |
| Bahasa: | eng |
| Terbitan: |
, 2017
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| Subjects: | |
| Online Access: |
http://repository.unusa.ac.id/5846/1/Analysis%20Of%20Water%20Balance%20To%20Determine%20Cropping%20Patterns%20Of%20Food%20Crop%20In%20Sub-Watershed%20Tenggarong%2C%20Kutai%20Kartanegara%20Regency.pdf http://repository.unusa.ac.id/5846/ https://www.fossa2017.org |
Daftar Isi:
- 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 at determined water input, water use and water loss, consumptive use crop water balance and designing a cropping pattern on rainfed paddy field at Watershed Tenggarong. The geographical position of the experiment site was between 116 o ' o 49 EL–116 ' 57 o EL and 0 ' o ' 24 SL-0 28 SL, which cover 315.5 km 2 . The high rainfall depth period was at December and April, therefore the low rainfall depth was at September and November. Determination of field capacity and permanent wilting point using soil texture data as input through Bouyoucos hydrometer methods. The calculation of land water balance according to Thornthwaite and Mather (1957) is 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 have potential growing season about 9 months, water surplus 8 months (439.6 mm year -1 ) and water deficits about 3 months (59.7 mm year -1 ). In these area, paddy could be planted twice a year without irrigation. Whereas when climate anomalies can be cultivated paddy fields on certain land (swamps or suburbs of lake/river).