The hood is an alternative to overcome the high intensity of sunlight. In this study the type of containment material treatment can be divided into 3 types of containment material, namely the type of plastic lid material, paranet and combination. For microclimate measurements, a temperature and humidity meter and a light meter are used. Microclimate measurements were carried out at 12.00 WITA, on cayenne pepper from 7 days to 35 HTS. Micro climate data analysis is done by interpolation to obtain the profile contour lines. The results of the study showed that there were different shapes and distribution of different micro-climate profile contours, especially in light intensity. At air temperature and air humidity can not obtain contour lines, because the results of the data from the research conducted are not much different. Plant growth rates in each treatment showed different productivity. In this type of paranet lid material shows better results compared to the type of plastic hood and combination material. In this type of paranet lid material produces an average dry weight of 247.9 grams. Keywords: hood type material, cayenne pepper plant, microclimate.

ABSTRAK Kurangnya ketersediaan air irigasi yang disebabkan oleh debit air yang tidak mecukupi pada saat musim kemarau dan sifatnya tidak merata, dimana pada bagian hulu ketersediaan air cenderung berlebih dan di hilir cenderung kekurangan. Dengan adanya kondisi seperti itu maka perlu dilakukan penelitian mengenai kekurangan air irigasi pada saat musim kemarau agar dapat dilakukan pengelolaan air secara optimal pada DAS Ho. Penelitian dilakukan untuk mengetahui persentase kekurangan air irigasi yang ada pada setiap subak dan menentukan teknik pengelolaan air irigasi agar merata pada setiap bagian subak. Data primer diperoleh dengan metode wawancara, pengamatan, dan pengukuran sedangkan data sekunder diperoleh dari BMKG Wilayah III Denpasar. Data yang diperoleh selanjutnya dianalisis untuk mencari persentase kekurangan air irigasi yang terjadi pada saat musim kemarau dan untuk menentukan proporsi distribusi air irigasi. Hasil penelitian menunjukan persentase kekurangan air irigasi pada subak daerah hulu rata-rata sebesar -48,43%, pada subak daerah tengah rata-rata 21,99%, dan pada subak daerah hilir rata-rata sebesar 23,92%  dan penentuan teknik proporsional pengelolaan air pada subak daerah hulu, tengah, hilir pada musim kemarau menggunakan Qt rekayasa pada Qt awal yaitu pada subak bagian hulu Qt awal sebesar 2,67 l/detik/ha direkayasa menjadi 1,73 l/detik/ha , pada subak bagian tangah dari Qt awal yaitu sebesar 1,32 l/detik/ha direkayasa menjadi 0,75 l/detik/ha, dan pada subak bagian hilir dari Qt awal 2,53 l/detik/ha direkayasa menjadi 3,21 l/detik/ha. ABSTRACT Irrigation water shortage is caused by insufficient water discharge during the dry season. The water is distributed unevenly; the upstream water tends to have a surplus water, whereas the downstream has the tendency of water deficit. Based on the situation, it is necessary to conduct research on the irrigation water shortage during the dry season, so that optimal water management can be achieved. The study was conducted to determine the percentage of irrigation water deficiency in each subak and determine irrigation water management techniques that ensuring the water distributed evenly to each subak. Primary data were obtained by interview, observation, and measurement methods, while secondary data were obtained from BMKG Region III Denpasar. The data obtained were analyzed to determine the percentage of irrigation water shortages that occurred during the dry season and to determine the proportion of irrigation water distribution. The results showed that the percentage of water shortage of irrigation water in the upstream subak was -48,43%, in the middle subak was 21,99%, and in the downstream subak 23,92%. The proportional water management techniques in the upstream subak, middle, downstream in the dry season using modified Qt, the upstream subak had the initial Qt of 2,67 l/sec/ha and the modified was 1,73 l/sec/ha, in the middle subak has the initial Qt of 1,32 l/sec/ha and the modified was 0,75 l/sec/ha, and in the downstream subak had initial Qt of 2,53 l/sec/ha and the modified one was 3,21 l/sec/ha.

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Salah satu program penting dalam intensifikasi budidaya padi adalah pengelolaan air irigasi yang efisien. Pada subak di Bali pelaksanaan jadual tanam biasanya dilakukan secara serenpak sehingga terjadi puncak kebutuhan air yang tinggi. Akibatnya sangat berisiko terhadap kekurangan atau kelebihan air irigasai pada subak tersebut. Kondisi demikian menyebabkan efisiensi penggunaan air irigasi pada subak menjadi rendah. Salah satu solusi untuk meingkatkan efisiensi penggunaan air irigasi tersebut adalah dengan melakukan jadual tanam tidak serenpak yang pada subak dikenal dengan istilah nyorog. Dengan demikian perlu dikaji besarnya peningkatan efisiensi penggunaan air irigasi jika jadual tanam dilakukan secara nyorog Berdasarkan data yang telah dikompilasi diperoleh efisiensi penggunaan air irigasi yang dilakukan saat ini sebesar 76,52%. Saat ini pada obyek penelitian jadual tanam dibagi menjadi dua kelompok dengan beda jadual tanam antar kelompok tersebut sekitar satu bulan, dengan awal jadual tanam mulai Pebruari I.  Jika dilakukan jadual tanam secara serempak pada Pebruari II diperoleh efisiensi penggunaan air irigasi sebesar 69,05%.  Jika jadual tanam dilakukan secara nyorog dengan membagi subak menjadi empat kelompok dan setiap kelompok perbedaan jadual tanam sekitar setengah bulan serta awal jadual tanam pada Bulan Pebruari I maka diperoleh efisiensi penggunaan air irigasinya 86,52%.  Dengan demikian jadual tanam secara nyorog dapat meningkatkan efisiensi penggunaan air irigasi dari 69,05% menjadi 86,52%.    One important program in the intensification of rice cultivation is efficient irrigation water management. In subak in Bali the planting schedule is usually carried out simultaneously so that there is a high peak of water demand. As a result, it is very risky for irrigation water shortages or excess in the subak. Such conditions cause the efficiency of the use of irrigation water in subak to be low. One solution to improve the efficiency of the use of irrigation water is by not planting simultaneously which are known as nyorog in subak. Thus, it is necessary to assess the magnitude of the increase in the efficiency of the use of irrigation water if the planting schedule is carried out in a systematic manner. Based on the data that has been compiled in Subak Guama  the efficiency of the use of irrigation water is 76.52%. At present the object of the planting schedule is divided into two groups with different planting schedules between groups of about one month, with the start of the planting schedule starting in February I. If the planting schedule is simultaneously held in February II, the efficiency of irrigation water use is 69.05%. If the planting schedule is carried out systematically by dividing subak into four groups and each group different planting schedules of about half a month and the beginning of the planting schedule in February I, it is obtained that the water use efficiency of irrigation is 86.52%. Thus the planting schedule nyorog can increase the efficiency of irrigation water use through 69.05% to 86.52%.