View of <p class="MsoNormal" style="margin-bottom:.0001pt;text-align:justify;line-height:normal;"><span>During vegetative growth period, sugarcane required a lot of water but decreasing afterward and minimum at ripening period. Sugarcane water requirement was calculated by radiation method and USDA </span><span style="font-size:10.5pt;">(1969) </span><span>method was used to determinate effective rainfall. Average of monthly actual evapotranspiration (ETa) was calculated by the available soil water index. The total of water requirement of sugarcane </span><span style="font-size:10.5pt;">(1-12 </span><span>month) was around 37.38 mmlmonth to </span><span style="font-size:10.5pt;">143.22 </span><span>mmlmonth. The highest water requirement was found at age of </span><span style="font-size:10.5pt;">4 </span><span>to </span><span style="font-size:10.5pt;">9 </span><span>month, while the lowest was in the ripening period. Accordingly drip irrigation should be operated at maximum water use of about </span><span style="font-size:10.5pt;">3.96 </span><span>mm/day, or by sprinkle irrigation not less than 118.70 mm/mounth.<br /></span></p>

agriculture; biosystem; mechanics; engineering

Return to Article Details <p class="MsoNormal" style="margin-bottom:.0001pt;text-align:justify;line-height:normal;"><span>During vegetative growth period, sugarcane required a lot of water but decreasing afterward and minimum at ripening period. Sugarcane water requirement was calculated by radiation method and USDA </span><span style="font-size:10.5pt;">(1969) </span><span>method was used to determinate effective rainfall. Average of monthly actual evapotranspiration (ETa) was calculated by the available soil water index. The total of water requirement of sugarcane </span><span style="font-size:10.5pt;">(1-12 </span><span>month) was around 37.38 mmlmonth to </span><span style="font-size:10.5pt;">143.22 </span><span>mmlmonth. The highest water requirement was found at age of </span><span style="font-size:10.5pt;">4 </span><span>to </span><span style="font-size:10.5pt;">9 </span><span>month, while the lowest was in the ripening period. Accordingly drip irrigation should be operated at maximum water use of about </span><span style="font-size:10.5pt;">3.96 </span><span>mm/day, or by sprinkle irrigation not less than 118.70 mm/mounth.<br /></span></p> Download Download PDF