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All Journal Jurnal Ilmu Pertanian Indonesia Agromet Media Kesehatan Masyarakat Indonesia Jurnal Agro
Handoko Handoko
IPB University
Agriculture, Biological Sciences & Forestry Public Health

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Water Demand Analysis of Sugarcane Based on Crop Simulation Model (Case Study: Kediri Regency, East Java) Astrid Yusara; Handoko Handoko; Bregas Budianto
Agromet Vol. 33 No. 1 (2019): JUNE 2019
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (418.08 KB) | DOI: 10.29244/j.agromet.33.1.30-40

Abstract

Sugarcane productivity is naturally affected by climate variables and limited by the water availability. This study simulated a water balance model to estimate sugarcane water requirement and to estimate the best planting time as well based on its optimum productivity in Kediri Regency. Water requirement was estimated by water loss of evapotranspiration following FAO No. 24, while the productivity was based on mid-maturing sugarcane growth and development. Sugarcane rainfed area in Kediri Regency needs approximately 26-128 mm water per month based on its loss by evapotranspiration. The value varied due to the growth phase. More than 60% water was used in vegetative phase for developing buds and stem elongation of about 3-9 months after planting. The highest sugarcane productivity was obtained in July-September as the best planting time shown by simulation. Moreover, water deficiency during mid-season of sugarcane growth could decrease productivity by a significant amount. The work presented here could be used as a tool to help decision makers for irrigation management and select the best planting date. 
Karakteristik dan Distribusi Spasial Habitat Positif Larva Nyamuk Anopheles spp. Berdasarkan Curah Hujan Noper Tulak; Handoko Handoko; Rini Hidayati; Upik Kesumawati Hadi; Lukman Hakim
Media Kesehatan Masyarakat Indonesia Vol. 14 No. 3: SEPTEMBER 2018
Publisher : Faculty of Public Health, Hasanuddin University, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (866.052 KB) | DOI: 10.30597/mkmi.v14i3.3307

Abstract

Malaria is still a public health problem in Jayapura City. The disease is spread throughout the region withvarying number of cases. Increased transmission of malaria is affected by local conditions, including rainfall,habitat characteristics and larval habitats distribution. The aims of study were to describe habitat characteristicsand spatial distribution a habitat of positive of an Anopheles larvae spp based on rainfall in Heram District,Jayapura City. The method used is field observation with descriptive and statistical analysis approach. The resultsshowed that there were 6 breeding site Anopheles Mosquito in Heram District, namely rain puddle, puddles,moats, ponds, rivers and former tire tread. The habitat was found in Waena and Yabansai village. The larvalhabitat area is 0.04-28 m2, water depth 5-115 cm, water temperature 26.7-3.7 and water pH 6.7-7.7. A habitat ofpositive of an Anopheles larval spp were significantly affected by rainfall ie puddle (p=0.000; r=0.69), rain puddle(p=0.000; r=0.87), moats (p=0.000; r=0.57), former tire tread (p=0.047; r=0.34), pond (p= 0.000; r=0.57) andrivers (p=0.007; r=0.46 ) with determinant coefficients ranging between 0.11-0.77. Conclusion of the results ofthe study showed that rainfall affected a habitat of positive of an Anopheles larval spp in Heram District
Indikasi perubahan iklim dan dampaknya terhadap produksi padi di Indonesia (Studi kasus : Sumatera Selatan dan Malang Raya) Ruminta Ruminta; Handoko Handoko; Tati Nurmala
Jurnal Agro Vol 5, No 1 (2018)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/1607

Abstract

Perubahan iklim telah terjadi di wilayah Indonesia. Perubahan iklim memengaruhi pertanian melalui dampaknya terhadap pertumbuhan, perkembangan, dan hasil tanaman. Penelitian indikasi perubahan iklim dan dampaknya terhadap produksi tanaman padi di Indonesia (Sumatera Selatan dan Malang Raya) pada tahun 2011-2013 telah dilakukan.  Penelitian ini bertujuan untuk mengkaji adanya perubahan iklim dan bagaimana dampaknya terhadap produksi padi di Indonesia. Kajian ini menggunakan data dari temperatur, curah hujan, agroklimat, dan produksi tanaman padi serta data sosial ekonomi. Metodologi penelitian ini adalah deskriptif eksplanatori menggunakan konsep asesmen risiko dimana risiko (risk) merupakan fungsi dari bahaya (hazard) dan kerentanan (vulnerability). Hasil kajian menunjukkan bahwa di Indonesia telah terjadi perubahan iklim dengan indikasi peningkatan suhu, perubahan pola curah hujan, perubahan hitergraf, dan perubahan klasifikasi Oldeman.  Hasil penelitian juga menunjukkan bahwa pertanian sangat rentan terhadap dampak perubahan iklim dengan indikasi level bahaya yang tinggi pada penurunan produksi padi sebagai akibat peningkatan suhu dan perubahan pola curah hujan.  Beberapa daerah di Sumatera Selatan maupun Malang Raya mempunyai risiko tinggi pada penurunan produksi tanaman padi.  Umumnya Indonesia mempunyai tingkat risiko tinggi pada penurunan produksi padi dengan rerata 1,37 % per tahun dan berpotensi menyebabkan penurunan produksi pangan nasional. Climate change has been occurred in Indonesia. Climate change affects agriculture through its impact on growth, development, and crop yield. Research on climate change indication and its impact on rice production in Indonesia (South Sumatra and Malang Raya) in 2011-2013 has been done. The study aimed to assess climate change and how it impacts rice production in Indonesia. This study used data of temperature, rainfall, agroclimate, and rice production and socioeconomic. The methodology of this research was descriptive explanatory using risk assessment concept where risk was a function of hazard and vulnerability. The results of the study indicated that in Indonesia has been ocurred climate change with indications of temperature increase, changes in rainfall patterns, changes in hitergraph, and changes in Oldeman classification. The results also show that agriculture is highly vulnerable to the impacts of climate change with an indication of high hazard levels in the decline of rice production due to rising temperatures and changes in rainfall patterns. Several areas in South Sumatra and Malang Raya have a high risk of decreasing the rice production. Generally Indonesia has a high risk level on the decrease of rice production with an average of 1.37% per year and potentially causes the decline of national food production.
Co-Authors A. Ariyani A. Yanto Aan A. Daradjat Ahmad Bey Astrid Yusara Bregas Budianto Daniel Murdiyarso Didiek Hadjar Goenadi Didiek Hadjar Goenadi Ervan Ferdiansyah F. Djufri Fadjry Djufri Gusti Rusmayadi Impron Impron Irlas Las Johannes E. X. Rogi Lukman Hakim Noper Tulak Rakhmat Hanafi Ajis Rini Hidayati Rokhmin Dahuri RTM Sutamihardja Ruminta Ruminta Sobri Effendy Tati Nurmala Titik Kodarsih Upik Kesumawati Hadi Yonny Koesmaryono