Abstract
Mesocarp or fruit flesh is the main component of the cultivation of oil palm which is extracted to Crude Palm Oil (CPO). The amount of CPO produced from processing in palm oil mills is influenced by the quality of Fresh Fruit Bunches (FFB). Some factors that influence the quality of FFB are the type of crossing, plant age, maintenance level and fraction of fruit maturity. Adequacy of nutrients N, P, K, and Mg play a role in fruit formation and are expected to increase levels of CPO. In connection with this matter, research on the relationship / nutrient correlation with CPO content is needed. This research was conducted in October 2017 - March 2018 in the field with land suitability classes S1 (Maradja Hill), S2 (Limau Mungkur), S3 (Bah Birung Ulu) and STIPAP LPP Medan Practice Gardens. Processing data with single and multiple linear regression. Leaf samples were analyzed with the Sochlet apparatus in STIPAP Processing Laboratory. In general, the average nutrient content of leaves N, P, K were the normal category and nutrient Mg, Cl were deficiency category. The level of CPO (oil / mesocarp) varies from 31.14% - 59.59%. With single nutrient regression N, P, K, Cl has a positive correlation with CPO levels while Mg is negatively correlated. Multiple regression analysis of nutrient N, P, K, Mg and Cl has significant effect on O / N with a correlation coefficient of 0.744.
Highlights
Mesocarp or fruit flesh is the main component of the cultivation of oil palm
which is extracted to Crude Palm Oil
The amount of Crude Palm Oil (CPO) produced from processing in palm oil mills is influenced by the quality
Summary
Kadar hara Nitrogen daun secara umum termasuk kategori normal dengan rata-rata 2,58%, defisiensi N terjadi pada contoh dari kebun LPP Medan. Unsur N berperan penting dalam proses fotosintesis dan peningkatan bahan kering tanaman. Pada analisa unsur P dan K seluruh sampel pengamatan termasuk pada kategori normal. Kadar hara Magnesium yang termasuk klasifikasi normal adalah dari kebun Bukit Maradja (Blok 13 A), Kebun Limau Mungkur dan LPP. Defisiensi Mg terjadi dari sampel Kebun Bukit Maradja (Blok 13) dan Bah Birung Ulu. Unsur Magnesium bersifat mobile, mudah tercuci sehingga efisiensi serapan Mg dapat tidak mencapai kondisi yang optimal. Hasil analisa kadar Cl daun secara rata-rata pada kategori defisiensi ringan. Pada umumnya kebun-kebun lokasi pengamatan secara rutin melaksanakan pemupukan yang didasarkan pada hasil analisa daun ataupun rekomendasi dari Pusat Penelitian Kelapa Sawit- Medan atau konsultan Agronomis lainnya. Analisa ditetapkan dengan 3 sampel untuk tiap kebun sehingga terdapat 21 sampel
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