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All Journal AGRIVITA, Journal of Agricultural Science Berkala Penelitian Agronomi
M. Tufaila
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Agriculture, Biological Sciences & Forestry

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Characteristics of Soil Derived from Ultramafic Rocks for Extensification of Oil Palm in Langgikima, North Konawe, Southeast Sulawesi Tufaila, M.; Sunarminto, Bambang Hendro; Shiddieq, DjaÂ’far; Syukur, Abdul
AGRIVITA, Journal of Agricultural Science Vol 33, No 1 (2011)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Oil palm plantation in Langgikima was mostly grown in soils derived from ultramfic rocks which contain low productivity. Therefore, a study was required to determine the charac-teristics of soils evolved from ultramafic rocks evaluated from the aspects of soil formation and classification as well as land suitability for oil palm extensification. Soil observation in field had been carried out in locations of oil palm plantation with slope gradient < 15%, with ultramafic bedrocks (harzburgite, serpentinite, and olivine websterite). Soils from ultramafic rocks were characterized by almost acid to neutral soil reaction, poor nutrient content available (N, P, and K) and exchangeable base cations, with very low to low CEC, low to medium BS, and clay minerals dominated by goethite and magnetite. Soils from harzburgite and serpentinite rocks were classified as Acrustoxic Kanhaplustults while those from olivine websterite rocks were classified as Rhodic Kanhaplustalfs. Nowadays, soils from ultramafic rocks were unsuitable (N2) for oil palm with the very low level of available P as the main limiting factor. Therefore, efforts on soil management were necessary to be performed by adding suitable organic materials and fertilizers based on soil characteristics and crops’ needs.Keywords: soil characteristics, ultramafic rock, oil palm
HUBUNGAN KESUBURAN TANAH DENGAN HASIL BIJI KAKAO (THEOBROMA CACAO L.) DI SULAWESI TENGGARA Arsana, Made Widana; Tufaila, M.; Syaf, Hasbullah; Rakian, Tresjia C.
Berkala Penelitian Agronomi Vol 7, No 2 (2019)
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/bpa.v7i2.9676

Abstract

Sulawesi Tenggara merupakan provinsi dengan luas areal perkebunan kakao terbesar kedua di Indonesia, setelah Sulawesi Tengah. Informasi tentang hubungan kesuburan tanah dengan hasil biji kakao di wilayah ini masih sangat terbatas. Penelitian ini dilaksanakan untuk mengevaluasi hubungan kesuburan tanah dengan hasil biji kakao dan untuk mengetahui karakteristik tanah yang paling berpengaruh dan menjadi pembeda terhadap hasil biji kakao di daerah ini. Penelitian dilaksanakan di tiga kabupaten (i.e. Kabupaten Kolaka, Kolaka Timur, dan Kolaka Utara. Penelitian dilaksanakan menggunakan metode survei. Sampel tanah diambil secara komposit (lima komposit per UPS/unit pengambilan sampel) sampai kedalaman 30 cm. Jumlah UPS adalah 48 yang masing-masing berukuran 100 x 100 m. Karakteristik tanah yang dianalisis adalah tekstur tanah, kandungan C-organik, N-total, rasio C:N, pH, K2O, P2O5, Ca, Mg, K, Na, alkalinitas, jumlah basa, KTK, kejenuhan basa, Al, dan kejenuhan Al. Analisis korelasi Pearson dilakukan untuk mengetahui hubungan antara karakteristik tanah dengan hasil biji kakao. Hasil analisis menunjukkan hasil biji kering kakao secara signifikan (P<0.05) berkorelasi positif dengan pH, K2O, P2O5, Ca, jumlah basa, dan KTK tanah. Karakteristik tanah yang paling berpengaruh dan menjadi pembeda terhadap hasil biji kakao adalah kandungan Ca dan K2O, dengan persamaan regresi: Y = 78,65Ca +13,17K2O +292,41 (R2=0,27).Kata kunci: hasil biji, kakao, kesuburan tanah, korelasi
Characteristics of Soil Derived from Ultramafic Rocks for Extensification of Oil Palm in Langgikima, North Konawe, Southeast Sulawesi M. Tufaila; Bambang Hendro Sunarminto; Djafar Shiddieq; Abdul Syukur
AGRIVITA Journal of Agricultural Science Vol 33, No 1 (2011)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v33i1.48

Abstract

Oil palm plantation in Langgikima was mostly grown in soils derived from ultramfic rocks which contain low productivity. Therefore, a study was required to determine the charac-teristics of soils evolved from ultramafic rocks evaluated from the aspects of soil formation and classification as well as land suitability for oil palm extensification. Soil observation in field had been carried out in locations of oil palm plantation with slope gradient < 15%, with ultramafic bedrocks (harzburgite, serpentinite, and olivine websterite). Soils from ultramafic rocks were characterized by almost acid to neutral soil reaction, poor nutrient content available (N, P, and K) and exchangeable base cations, with very low to low CEC, low to medium BS, and clay minerals dominated by goethite and magnetite. Soils from harzburgite and serpentinite rocks were classified as Acrustoxic Kanhaplustults while those from olivine websterite rocks were classified as Rhodic Kanhaplustalfs. Nowadays, soils from ultramafic rocks were unsuitable (N2) for oil palm with the very low level of available P as the main limiting factor. Therefore, efforts on soil management were necessary to be performed by adding suitable organic materials and fertilizers based on soil characteristics and crops needs.Keywords: soil characteristics, ultramafic rock, oil palm
Co-Authors Abdul Syukur Arsana, Made Widana Bambang Hendro sunarminto Bambang Hendro Sunarminto DjaÂ’far Shiddieq Djafar Shiddieq Hasbullah Syaf Rakian, Tresjia C.