Pengaruh Curah Hujan dan Hari Hujan terhadap Produksi Kelapa Sawit Berumur 12,15,18 Tahun di PTPN II Unit Sawit Seberang – Babalan Kecamatan Sawit Seberang Kabupaten Langkat

Cecilia Natalenta Depari, Irsal Irsal, Jonis Ginting


The climate factor is very influential to the growth and productivity of palm oil. Rainfall is an
important climatic element observed. Where the palm oil is a plant that requires large amounts of
water than other crops. Purpose of this research was to determine the effect of rainfall and rain day
as well as the correlation of both on palm oil production in plants aged 12, 15 and 18 years. This
research was held at PTPN II Unit Sawit Seberang–Babalan Sub-district Sawit Seberang District
Langkat Province of North Sumatera from March 2014 to September 2014. This research used
primary data available in company administration. Primary data for the purposes of data analysis
includes the production of fresh fruit bunches (FFB); componen production data as total bunches,
average bunches weight, and total of productive trees; rainfall data and rain day monthly in 2011,
2012, and 2013 on 9 afdeling. Analysis method used are double linier regression and correlation
analysis. Model tested by classic asumption consists of normality test, heteroskedasticity test,
multicollinearity, and autocorellations test by using statistic software SPSS.v.18 for windows. The
regression analysis shows that rain fall and rain day variables haven’t significant influence with
alpha 5% (Sig < α 0.05) to increase the production of FFB at the age of 12, 15, and 18 years. This is
because the rainfall is not evenly distributed throughout the year and less than optimal for the
growth and production of FFB. From the results of the classical assumption test conducted to
determine whether the multiple regression equation feasible or not to use the regression equation to
conclude that the oil palms aged 12, 15, and 18 years are qualified. Correlation results in plants was
12, 15, and 18 years with two-way analysis test at 1% level showed variable rainfall and rainy days
have a strong relationship, and the real (positive) direction. Correlation values of rainfall and rainy
days are 0.895; 0.887; and 0.911 each with significant level < α 0.01.
Keywords: rainfall, rain day, FFB production.

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Program studi Agroteknologi

Fakultas Pertanian

Jl. Prof. A. Sofyan no. 3

Kampus Universitas Sumatera Utara

Padang Bulan- 20155

Medan-Sumatera Utara

E ISSN (2337-6597)