Jurnal Ilimah Agrosains Tropis, Vol 1 No 1, Januari 2006: 1-6

Nelson Pomalingo, Nurdin

Jurusan Teknologi Pertanian Fakultas Ilmu-Ilmu Pertanian Universitas Negeri Gorontalo

Abstract

The rainfall, relative humidity and temperature data of North Isimu Area of Gorontalo Regency were collected for period 1961-2005. For land suitability purpose, the potential evapotranspiration is cumputed using Thorwhitw Methods. This area which has dry season of 3 month and growing period of 5 month is potential for development of the yearround of maize when correct planting time is properly carried out. The computation of water balance used as basic strategy for water management and crop calendars. Rainfall, relative humidity and temperature are component which determinees alnd suitability of maize. Land suitability analysis for maize development using category system based on limiting factor method. Then, the computation of comparative suitability value using Felozardo (1978) method. The result of this research has shown that land suitability classes for maize development based on climate factors are moderately suitable (S2). Then, the comparative suitability value of this area are 86.67%. The crop calendar for maize development at North Isimu Upland area is January until March as first cultivation and April until July as second cultivation. In soil factor are very supproting for maize developing at North Isimu Upland area.

Keywords: Land suitability, climate, maize, crop calendar, upland, Isimu Utara.

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