Paper ID: 103

RESPONSE OF LOCAL RICE VARIETIES WITH INTERMITTENT IRRIGATION IN MICRO CLIMATE FACTORS

Authorship

B. H. Isnawan1,2, Samanhudi3, Supriyono3, Supriyadi3

1Doctoral Progam of Agricultural Sciences, Graduate School Universitas Sebelas Maret,  Surakarta, Indonesia.

2Department of Agrotechnology, Faculty of Agriculture, Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia

3 Department of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret,  Surakarta, Indonesia.

bambang_hi@yahoo.com

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Abstract

Intermittent irrigation is a method of irrigation that is done for the efficiency of irrigation in rice cultivation. This study aims to study the interaction of local rice varieties and types of irrigation, the effect of local varieties and irrigation system on rice micro climate factors. The study was conducted with an experimental method of factorial 3×4 strip plot design with a Randomized Completely Block Design (RCBD) with 3 replications. The factor I type of irrigation consists of 3 levels, namely: conventional irrigation, irrigation 10 days inundated 5 days dry, irrigation 7 days inundated 3 days dry. Factor II of rice varieties, consisting of 4 levels, namely: Rojolele, Pandan Wangi, Mentik Wangi, and Ciherang. The results showed that the Pandan Wangi variety of rice with 7 days of inundation in 3 dry days had higher temperatures above the canopy while Ciherang with conventional irrigation had higher temperatures under the canopy. Ciherang with 10 days of inundation 5 days of irrigating have higher under-canopy air humidity. During the initial vegetative, irrigation 10 days inundated 5 days dry and 7 days inundated 3 days dry had higher soil temperatures above the surface than conventional irrigation. When flowering, irrigation 7 days inundated 3 days dry has a soil temperature above the surface higher than conventional irrigation. When flowering, irrigation 7 days inundated 3 days dry has a soil temperature-depth of 15 cm higher than conventional irrigation and irrigation 10 days inundated 5 days dry. The condition of the micro climate was expected to be useful concerning plant physiology, pests, diseases, and rice weeds and their control.

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