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Climate Suitability as a Factor of Productivity Level of Oil Palm Plantation: Crop Simulation Model Approach
Researcher : I. Handoko and Y. Kusmaryono
Published : 2005
Group :Agriculture
Full Report : Special request
Abstract :
Climate suitability as a factor of productivity level of oil palm plantations can be determined by crop simulation model. This model consists of four sub models : (1) development, (2) growth, (3) water balance, (4) nitrogen balance developed based on field observations in Bogor and Lampung conducted from 1989 to 2001 involving all age levels of plants starting from nursery (0-1 year), 4-6 years, and 19-21 years. This crop simulation model (Shierary-oilpalm) has a daily resolution. The development of the model uses a mechanistic approach which describes the development and growth process of the crop and its interactions with daily environmental factors (climate and soil). The input of the model are daily meteorological data (solar radiation, air temperature, humidity, wind velocity and rainfall), (2) soil physical properties (field capacity, permanent wilting point and parameter of evaporation) and chemical parameters ((pH and total nitrogen), (3) agronomical inputs (rate and time of fertilizing), (4) initial variables, i.e. soil water and nitrogen contents (nitrate and ammonium). The outputs of the model are period of crop developmental phases, water use, plant growth and crop yields. The model can simulate the influence of climate variation on fluctuation of oil palm yield, so that it can be used as a supporting tool for zoning and management of oil palm plantations. The model can be run at almost all locations in Indonesia to predict yield based on climate suitability.