Ali Rahmat
Unite Graduate School of Agriculture Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan

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Comparison Air Temperature under Global Climate Change Issue in Gifu city and Ogaki city, Japan Ali Rahmat; Abdul Mutolib
Indonesian Journal of Science and Technology Vol 1, No 1 (2016): IJoST: VOLUME 1, ISSUE 1, April 2016
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v1i1.2212

Abstract

Increases in air temperature indicate a global climate change. Thus, information in the change of temperature regional scale is important to support global data. The present research was conducted in Gifu city and Ogaki city located in Gifu prefecture, Japan. The results showed that, average air temperatures in both cities are quite similar with a difference value of under 1oC. Maximum air temperature in Gifu city is significantly higher than Ogaki city, whereas minimum air temperature in Gifu city is significantly lower than in Ogaki city. Daily range of air temperature in Gifu city significantly higher than in Ogaki city. In both cities, air temperature relatively increased in three decades. This is because of different in land characteristics in both cities.
Relationship of Soil Physicochemical Properties and Existence of Phytophthora sp. in Pineapple Plantations Deva Aziz Nanda Martin; Ali Rahmat
Indonesian Journal of Science and Technology Vol 2, No 1 (2017): IJoST: VOLUME 2, ISSUE 1, April 2017
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v2i1.5991

Abstract

One of the tropical fruits with high economic value is pineapple. Pineapple plantation has several limitations, especially in cultivating period and diseases caused by Phytophthora sp. (called heart rot disease). The spread of Phytophthora sp. in pineapple plantation is influenced by physical of soil (called as soil borne pathogen). Here, the purpose of this study was to examine physical properties of soil (compaction), specifically on heart rot disease in pineapple plantation. We used pineaple farm locating in Central Lampung, Indonesia. In this paper, we analyzed the disease impact from the soil compaction point of view. We investigated the difference between soil samples with and without sick plant. The results showed that the disease area were affected by Phytophthora sp. area have high soil compaction. Indeed, this soil condition is good for growing Phytophthora sp.