Judul: Pengaruh Debit dan panjang Saluran terhadap Kehilangan Air selama Penyaluran di saluran Tersier B. C. - K.1 Daerah Irigasi Merjan Kertayasa Kabupaten Ciamis
Abstrak: Tujuan daripada irigasi atau pemberian air pada areal p-ertanaman adalah membasahi tanah guna menciptakan keadaan kelembaban pada daerah perakaran untuk memenuhi kebutuhan a i r bagi pertumbuhan tanaman. Disamping i t u , manfaat l a i n daripada i r i g a s i yai t u mempermudah pengolahan tanah, mengatur suhu tanah dan tanaman, sanitasi, memberantas tumbuhan pengganggu.
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Judul: Hubungan Antara Kehilanagan Air Dengan Panjang SaluranDan Besar Debit Air Pada Saluran Tersier Di Daerah Irigasi Cihea, Kabupaten Cianjur
Abstrak: Tujuan dari penelitian ini adalah untuk mempelajari hu- bungan antara kehilangan air dengan panjang saluran dan besar debit air pemasukan pada saluran tersier. Kehilangan air irigasi, paling besar terjadi selama pe- ngaliran melalui saluran pembawa. Kehilangan air di sepan- jang saluran pembawa ini melalui proses evaporasi langsung dari permukaan air, transpirasi tanaman di sepanjang tanggul saluran, rembesan dan bocoran. Penelitian dilakukan di areal Petak Tersier Crj 10 ka, Daerah Irigasi Cihea, Kabupaten Cianjur. Untuk melihat hu- bungan antara kehilangan air dengan panjang saluran dilaku- kan pada debit pemasukan (inflow) sebesar 95.0 1t/dt. Pe- nentuan panjang saluran dilakukan secara acak dengan tujuh taraf, dan masing-masing dilaksanakan sebanyak tiga kali u- langan. Untuk melihat hubungan antara kehilangan air dengan be- sar debit air pemasukan, dilakukan pada panjang saluran 200 m. Penentuan besar debit air pemasukan dilakukan secara acak, dengan delapan taraf dan masing-masing sebanyak tiga kali u- langan. ...
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Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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