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Sarno, - and Iijima, Morio and Lumbanraja, Jamalam and Sunyoto, - and Yuliadi, Erwin and Izumi, Yasuhiro and Watanabe, Akira (2004) Soil chemical properties of an Indonesian red acid soil as affected by land use and crop management. Soil and Tillage Research, 76 (2). pp. 115-124. ISSN 0167-1987

Sarno, - and Lumbanraja, Jamalam and Afandi, . and Adachi, Tadashi and Oki, Yolo and Senge, Masateru and Watanabe, Akira (2004) Effect of weed management in coffee plantation on soil chemical properties. Nutrient Cycling in Agroecosystems, 69. pp. 1-4. ISSN 1385-1314

Watanabe, Akira and Sarno, - and Lumbanraja, Jamalam and Tsutsuki, Kiyoshi and Kimura, Makoto (2001) Humus composition of soils under forest, coffee and arable cultivation in hilly areas of south Sumatra, Indonesia. European Journal of Soil Science, 52. pp. 599-606. ISSN 1365-2389

Salam, Abdul Kadir and Watanabe, Akira and Kimura, Makoto (1997) Timah Hitam Menurunkan Aktivitas Beberapa Jenis Enzim Tanah. Pros Seminar Nasional Biologi XV (3). pp. 1323-1326. ISSN 979-8287-17-7

This list was generated on Thu Oct 1 14:54:08 2020 WIB.