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Abstract : <br /> <br /> <br /> <br /> <br /> <br /> This Thesis presents an analysis of effective rainfall which is applied for agricultural land rainfed rice field. <br /> <br /> <br /> <br /> <br /> <br /> Dep...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/7832 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Abstract : <br />
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This Thesis presents an analysis of effective rainfall which is applied for agricultural land rainfed rice field. <br />
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Dependable rainfall or effective rainfall is determined by applying statistical and probability approach using the 15 days duration rainfall distribution data. Agriculture pattern in rainfed rice field need the proper information of rainfall characteristic as the one of water resources. <br />
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Crop water requirement is calculated by applying water balance formula which depend on several factor namely : crop consumptive use or potential evapotranspiration , percolation, losses and effective rainfall. Case study in this analysis is conducted at agriculture land rainfed rice field located in West Aceh Regency, Nangroe Aceh Darusalam Province. <br />
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From the analysis it is obtained that the average of effective rainfall for 15 days duration rainfall distribution of lst and 2nd cropping season are 0,313 I/Sec/ha and 0,553 1/Sec/ha respectively. <br />
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The application of existing cropping pattern paddy - paddy and the 2nd cropping pattern of paddy there are water shortage exist. The results of study it is concluded that the design of cropping pattern can be conducted as paddy - paddy - palawija, with cropping intensity of 100% (I st paddy, cropping pattern) and Cropping Intensity of 39,8 % (2nd paddy cropping pattern) and Cropping Intensity of 60,2% (3rd palawija cropping pattern), having only 38,8% of total area rain fed rice field. Some value of 238% cropping intensity is achieved from this analysis, therefore for the successful of rain fed rice field and to increate of cropping intensity that is need the additional water supply from irrigation or by utilizing of the other water resources. |
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