Rainfall Variability and Its Influence on P Palm Oil Productivity (Elaeis Guineensis Jacq.): Case Study at PT. Nusaina Group Seram Island Province Maluku
Jacob R. Patty | Semuel Laimeheriwa | Elia L. Madubun | Sandivo Lingga
Discipline: agricultural sciences
Abstract:
Rainfall variability significantly influences plant productivity; including palm oil. This research aims to describe rainfall variability
and its influence on oil palm productivity on Seram Island, Maluku
Province. The data collected consists of rainfall, palm oil production data and supporting data. The analytical method used consists
of generating rainfall data, analyzing extreme rainfall conditions
and regression analysis to see the relationship between rainfall
and palm oil productivity. The research results show that the El
Nino rainfall anomaly at the research location in the 1992-2021
period occurred 8 times with a frequency of once every 2 - 6 years
or an average of once every 3 years. La Nina occurs 7 times with a
frequency of 1 – 10 years or an average of once every 4 years. The
very extreme El Nino caused a reduction in rainfall at the research
location by 888 mm or 40% of normal conditions, whereas the
very extreme La Nina event resulted in an increase in rainfall of
1491 mm or 58% of normal conditions. Rainfall variability is very
closely related to oil palm productivity with the regression equation Y = 94.05 – 0.1558x + 0.000083x 2 – 10 -8 x 3 and the accuracy
level R 2 is 98.6%.
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