i ABSTRAK
SANTO ALFONSIUS TINAMBUNAN: Kajian Kontaminan Nitrogen Dan Fosfor Di Areal Perkebunan Kelapa Sawit PTP. Nusantara IV Kebun Pabatu Pada Musim Hujan. Dibimbing Oleh SUMONO dan NAZIF ICHWAN.
Penggunaan lahan dalam suatu Sub DAS yang diperuntukkan bagi lahan kelapa sawit yang mendapatkan perlakuan pemupukan dan pengaruh curah hujan dapat menyebabkan tergerusnya beberapa unsur kesuburan tanah seperti unsur Nitrogen dan Fosfor yang mengalir dan masuk ke dalam sungai sehingga menyebabkan terjadinya kontaminasi. Kontaminan Nitrogen dan Fosfor ke badan sungai akan bergantung pada debit air sungai. Untuk itu perlu dilakukan pengkajian mengenai total Nitrogen dan total Fosfor untuk mengetahui sejauh mana Nitogen dan Fosfor yang ikut mengalir ke sungai dan hubungan debit air dengan total Nitrogen dan total Fosfor.
Hasil penelitian menunjukkan kandungan total Nitrogen dalam Sub DAS Sei Kalemba (DAS Padang) didapat sebesar 1,39 – 11,74 mg/liter dan kandungan total Fosfor dalam Sub DAS Sei Kalemba (DAS Padang) didapat sebesar 2,01 – 7,96 mg/liter. Total Nitrogen dan total Fosfor pada Sub DAS Sei Kalemba (DAS Padang) menunjukkan adanya kecenderungan terhadap debit air sungai.
Kata Kunci: Nitrogen, Fosfor, Daerah Aliran Sungai, Kelapa Sawit, Musim Hujan.
ABSTRACT
SANTO ALFONSIUS TINAMBUNAN : Nitrogen And Phosphorus Contaminants Assessment in Oil Palm Plantation Pabatu Area of PTP. Nusantara IV During Rainy Season. Supervised by SUMONO and NAZIF ICHWAN.
The use of land within a Sub River Flow Area that is intended for oil palm plantations that has fertilization treatment and the effect of rainfall can cause erosion of some elements of soil nutrient, such as Nitrogen and Phosporus in the water body causing contamination. Nitrogen and Phosphorus Contaminants in the water body of the river will depend on the river water discharge. Therefore study is needed on total nitrogen and total phosphorus to determine the extent of nitrogen and phosphorus that come flowing into rivers and river discharge relationship with total nitrogen and phosphorus.
The resulst showed the total amount of nitrogen in the Sei Kalemba Sub River Flow Area (Padang river Flow Area ) was 1,39 – 11,74 mg/litre and the total amount of phosphorus in the Sei Kalemba Sub River Flow Area (Padang river Flow Area ) was 2,01 – 7,96 mg/litre. Total Nitrogen and Phosporus in th Sei Kalembae Sub River Flow Area (Padang river Flow Area ) showed that was a relationship with river water discharge.
Keywords : Nitrogen, Phosporus, River Flow Area, Palm Oil, Rainy Season.
