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All Journal AGROLAND: The Agricultural Sciences Journal Jurnal Agrotech Abditani : Jurnal Pengabdian Masyarakat BUANA SAINS Jurnal PkM (Pengabdian kepada Masyarakat) Mitra Sains Advance Sustainable Science, Engineering and Technology (ASSET)

Imam Wahyudi

Faculty Of Agriculture, Tadulako University

Author-ID : 2475414

Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mathematics Physics Social Sciences

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PERAN ASAM HUMAT DAN FULVAT DARI KOMPOS DALAM DETOKSIFIKASI ALUMINIUM PADA TANAH MASAM Imam Wahyudi
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

A study that was aimed to elucidate roles of Gliricidia sepium and Tithonia diversifolia composts and their extracted humic and fulvic acids on aluminum concentration in an Ultisol was conducted in a laboratory. Those composts and humic and fulvic acids extracted from them were mixed with soil and incubated for 90 days. Results of the study showed that the highest decrease in exchangeable Al concentration (90,5%) was observed for Tithonia fulvic acid treatment during 90 days, followed by Tithonia compost (88,4%), Gliricidia fulcic acid (82,3%), Gliricida compost (82,2%), Gliricidia humic acid (82,3%), and Tithonia humic acid (75,7%) treatments. In general, rate of change in exchangeable concentration was fast for the first 45 days, but it then slowed down during the second 45 days (45-90 days). This was particularly observed for humic and fulvic acid treatments, whereas compost treatment still showed subsequent decrease. It was concluded that roles of humic and fulvic acid in reducing exchangeable Al was only a short term, whereas compost played roles in a long term. In terms of capability in reducing exchangeable Al, Tithonia compost and its humic and fulvic acids was better than Gliricidia compost and its humic and fulvic acids

PERUBAHAN KONSENTRASI ALUMINIUM DAN SERAPAN FOSFOR OLEH TANAMAN PADA ULTISOL AKIBAT PEMBERIAN KOMPOS Imam Wahyudi
BUANA SAINS Vol 9, No 1 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

A glasshouse experiment was conducted to judge the beneficial effects of Gliricidia sepium and Tithonia diversifolia composts on plant growth improvement, P availability and reduction of aluminium concentration in an Ultisol. Thirteen treatments consisting of two composts, six rates of each compost (5, 7.5, 10, 20, 40 and 80 t/ha) and one control (no added compost) were arranged in a randomized block design with three replicates. Each mixture of compost and soil was placed in a pot containing 8 kg of soil, and maize of Srikandi cultivar was grown on it for 45 days. At harvest, plant P content, soil pH, and soil aluminium concentration were measured. Results of this study showed that application of Gliricidia and Tithonia composts significantly reduced Alo concentration, increased Alp content, increased soil pH, increased P availability, and increased P taken up by maize grown for 45 days. The optimum rate of both Gliricidia and Tithonia composts should be 45 t/ha. However, at the same rate, optimum production gained by application of Tithonia compost would be higher than that of Gliricidia. This was due primary to the difference contents of humid acid and fulvic acid of the composts

Co-Authors Arianto Arianto Bahrudin Bahrudin Dwi Shinta Anggreni Idham Idham Idris IRWAN LAKANI Muhammad Anshar Muhammad Basir Rahmah Laila Sri Anjar Lasmini Sulaeman Hanafie Syahrullah Usman Made Valentino Valentino Zainuddin Basri

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