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Application of 40 mm every 10 days Run 5: The CWR module includes calculations, producing the irrigation water requirement of the crop on a decadal basis and over the total growing season, as the difference between the crop evapotranspiration under standard conditions ETc and the Effective rainfall. The additional following parameters are displayed in case of rice calculation: Groundnut from 15 July to 1Nov, Red sandy loam soil To assess adequacy of existing irrigation practices in terms of efficient water use and production level as a base to develop and promote better irrigation practices. Red Sandy Loam 3. Indicative yield level 5.

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Run 1 Timing Option: The schedule module essentially includes calculations, producing a soil water balance on a daily step. The CWR module includes calculations, producing the irrigation water requirement of the crop on a decadal basis and over the total growing season, as the difference between the crop evapotranspiration under standard conditions ETc and the Effective rainfall. Red Sandy Loam 3.

Application of 80 mm after 80 mm depletion Run 3: Defined as that part of the rainfall which is effectively used by the crop after rainfall losses due to surface run off and deep percolation have been accounted for.

Scheduling Results In Table 21 the results of wondows schedule are shown. Figure 3 illustrates a possible distribution of crops over the year and over the irrigated area.

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Predominant soils for rainfed crops should be taken. The files of the soils in the scheme under analysis are included in Appendix 3. Black Clay Soil 2. Irrigation at fixed intervals per stage 7 to 10 days Application Option: Essential information collected from the field should include: Fixed application depth 40 mm Evaluation Criteria: Total available soil moisture FC - WP In such a case a careful selection should be made of the data.

Refill soil to field capacity Evaluation Criteria: Same as Run 5 for Wet Year Run Once the window is window with the suitable data type, type rainfall data and check the input.

Plot values on log-normal scale and obtain the logarithmic regression equation, as shown in Figure 2. It is important to give an appropriate name to the data set which can easily be recognized later.

Four applications of 70 mm after day Run 6: The start of maturity is often indicated by the beginning of the ageing, yellowing or senescence of leaves, leaf drop, or the browning of fruit to the degree that the crop evapotranspiration is reduced relative to the ETo. The module is primary for data input, requiring information on the meteorological station country, name, altitude, latitude and longitude together wndows climatic data.

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An adjustment of the crop file may be necessary as rainfed crops will in general be better adapted to stress conditions than higher yielding irrigated crops; consequently length of growing stages, rooting depth, allowable depletion levels wundows yield response factor will need to be adjusted.

Same as Run 6 for Light Soil Run 8: Furthermore, information on the various crop characteristics such as length of the growth cycle, crop factors, rooting depth, etc.

In such cases the crop may be subdivided into winows crop units with planting date intervals of days. Warabandi system with fixed rotational interval period Scheduling procedures: By Eric Asamoah and Adams Sadick.

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To assess adequacy of existing irrigation practices in terms of efficient water use and production level as a base to develop and promote better irrigation practices. Table 19 Printout — Irrigation scheduling practiced by the farmer The example shows that farmers' practice matches fairly well the calculated irrigation requirements. In addition, substations may be found with single rainfall records. Irrigation at fixed depletion 40 mm Application Option: Vapour pressure rather than Relative Humidity values are taken, as the latter relate to temperature values at sunrise and noon Sunshine data IMS: Paddy from 01 Jan to 30 Apr, Black clay soil 8.