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2018, vol. 63, iss. 4, pp. 399-407
A correlation between the increased temperatures and the productivity of ladang in Kutai Barat Regency, the province of East Kalimantan, Indonesia
aUniversity of 17 Agustus 1945, Faculty of Agriculture, Department of Agrotechnology, Samarinda Province of East Kalimantan, Indonesia
bKartini University, Department of Management, Surabaya City, Province of East Java, Indonesia
Keywords: global warming; swidden fields; productivity; correlation; organic cultivation; temperature
The studies on the impact of global warming, particularly in the field of food production, could provide more accurate analysis to support a policy of food security. This research was conducted to find out the trends and the impact of the increase in the air temperature on the production of ladang (swidden field) in the Kutai Barat Regency. The results of the research carried out in some of the traditional rice fields indicate a technology that has barely changed, and organic based cultivation. During the period 1990-2015, air temperature increased leading to daily average of 21.20C-25.20C or an average increased by 0.160C/year. In the same period, the productivity of ladang increased by 1.872-3.195 kg ha-1 or an average increased by 261 kg/hectare/year. Linear regression analysis results at the 5% level of significance showed the existence of the real correlation (r=0.7) between the average air temperature change and the productivity of the paddy fields.
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article language: English
document type: Original Scientific Paper
DOI: 10.2298/JAS1804399S
published in SCIndeks: 08/02/2019
peer review method: double-blind
Creative Commons License 4.0

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