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Analisis Neraca Air dalam Ketersediaan Air Terhadap Perubahan Iklim di Beberapa Sub DAS Musi Puspitahati, Puspitahati; Saleh, Edward
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 6, No 2 (2017): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Puspitahati et al, 2017. Analysis of Water Balance in Water Supply Against Climate Change in some Sub-Watersheds Musi. JLSO 6(2):192-202. Rainfall and land cover in the Musi Sub-watershed affect water availability. Both of these components are inputs from the water balance which will affect fluctuations and water level so that it will affect evapotranspiration, run off, and flowrate. The purpose of the study was to determine how the effects of climate change on water availability in the Sub-watershed of Musi Watershed. This study was focus on four Sub-watersheds contained on the Musi river basin, namely Musi Sub-watershed, Komering Sub-watershed, Ogan Sub-watershed and Lematang Sub-watershed. This research was conducted at the Laboratory of Soil and Water Engineering, Department of Agriculture Technology, Faculty of Agriculture, Sriwijaya University from September 2013 to January 2014. Methods used in this research were descriptive method, the study of literature and secondary data taking, while the analysis was done with tabulation and graphs. The conclusion were 1) The availability of water was affected by changes in rainfall, population growth, and land cover types, 2) The highest rainfall was in Komering Sub-watershed equal to 105.23 mm/month, the highest run off was in Komering Sub-watershed equal to 33.67 mm/month, while the highest of evapotranspiration was in  Lematang Sub-watershed equal to 121.69 mm/month. Thus, we can find out how the effects of climate change on water availability in sub-watersheds in the Musi River Basin.
MESIN PANEN PADI PORTABEL TIPE KNAPSACK Hutagalung, HR.; hersyamsi, hersyamsi; puspitahati, puspitahati
Jurnal Teknik Pertanian Sriwijaya Vol 1, No 1 (2012)
Publisher : Universitas Sriwijaya

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The objective of this research was to design and test the rice harvest machine portable knapsack type. The methods used in this research were engineering design, making equipment, and testing on the equipment.  The primary paramaters were  theoretical capacity of the planting, harvesting effective capacity, work efficiency equipment, and the loss of rice yields.  The secondary parameters were the forward speed, the total of operation, and the rice yields.  The testing of this machine is done in area rice  field with an area of 202 at 10 obsrevation points.  Theoretically, the rice harvest machine portable knapsack type was able to finish harvesting of 1 Ha of rice crops with a time of 67.11 hours. Whereas, the effective working capacity of the field tested results showed that  this type of harvesting machine was able to finish of 1 Ha with a time of 60.5 hours.  From the comparison of harvesting manually and by used the machine (hour/Ha/person) obtained an efficiency of 50.77 % and the loss of grain in process harvesting by used the rice harvest portable knapsack type of 44.4 %   Keyword : harvester machine, performance, efficiency