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OPTIMAL WATER SHARING FOR SUST AINABLE WATER RESOURCE UTILIZATION BY APPLYING INTERMITTENT IRRIGATION AND SRI IN PADDY FIELD: CASE STUDY OF CICATIH-CIMANDIRI WATERSHED, WEST JAVA

OPTIMAL WATER SHARING FOR SUST AINABLE WATER RESOURCE UTILIZATION BY APPLYING INTERMITTENT IRRIGATION AND SRI IN PADDY FIELD: CASE STUDY OF CICATIH-CIMANDIRI WATERSHED, WEST JAVA

1Popi Rejekiningrum and 2Budi I. Setiawan

1Reasearcher of IAARD at Indonesian Agroclimate and Hydrology Research institute, Jl Tentara Pelajar No. 1A, Cimanggu-Bogor. Email:popirejeki@Yahoo.com

2Department of Agricultural Engineering, Bogor Agricultural University.

Email:budindra@ipb.ac.id;http://budindra.staff.ipb.ac.id.

Abstract. The objective of irrigation development was to increase rice production by intensifying cropping  season from one to two or even three times a year. However, later on complexity has arisen as rice demand increases while trend of agricultural land conversion is unavoidably is unavoidably faster, and in the other side, water availability has been fluctuating in a manner that is more difficult to handle since it is also linking to climate change phenomenon. Nowadays, effective water management in agriculture is even more crucial not only for supplying in a right volume and time but also making sure that water is readily available for other daily necessities. This paper gives a highlight of water management in agricultures currently conducted in Indonesia, and proposes a throughout optimum solutions based on a concept of optimum water sharing to find a robust agricultural water management for sustainable development of rice production. The water sharing could give certainty to all water users that for a long period of time water would be available even though rice cultivated in two seasons by gradually applying SRI paddy fields in combination with intermittent irrigation.

Keywords : Agriculture, rice, intermittent irrigation, climate change, optimal water sharing

INTRODUCTION

To dete, agricultural water management in Indonesia has been developed since the ancient times merely  for fice cultivation. As reported  by Hasan et al. (2010), the East Indian Company VOC in the East Indian Company VOC in the early 1700s  initiated the irrigation scheme with canalization projects mainly to expand rice paddy  faddy fields in the country. The Dutch Colonial Government  then established a Public Works Depertment in 1854, which was then becoming the sole authority to develop irrigation in the country. To note, the Brantas River Dam was the first  modern  water reservoir completed in 1920, which is still functioning until these days. When the Japanese authorized the country, planted areas of paddy fields doubled and reached 3.3 million hectares resulting in rice surplus.