PERUBAHAN JERAPAN P PADA ULTISOL AKIBAT PEMBERIAN CAMPURAN ABU TERBANG BATUBARA-KOTORAN AYAM Changes of P Sorption on Ultisol due to Addition of Coal Fly Ash-Chicken Manure Mixture
| Main Authors: | Hermawan, Agus, Sabaruddin, Sabaruddin, Marsi, Marsi, Hayati, Renih, Warsito, Warsito |
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| Format: | Article PeerReviewed application/pdf |
| Terbitan: |
Department of Soil Science, Faculty of Agriculture, Sebelas Maret University
, 2014
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| Subjects: | |
| Online Access: |
http://eprints.unsri.ac.id/7070/1/198%2D301%2D2%2DPB.pdf http://jurnal.fp.uns.ac.id/index.php/tanah/index http://eprints.unsri.ac.id/7070/ |
Daftar Isi:
- High soil P sorption which result in low P availability for plants is one of important constraints in Ultisols. The objective of current research was to study the effect of coal fly ash-chicken manure mixture (FA-CM) on the changes in P sorption and availability in Ultisols. Two treatments - FA-CM mixture (w/w of 1:1) at the rate of 0, 15, 30, 45 and 60 ton ha-1, and P fertilization at the rate of 0, 87, 174, 261 and 348 kg P - were tested. These treatments were arranged according to Factorial Completely Random Design with three replicates. Results of current research showed that FA-CM and P rates and their interaction significantly affected the values of point of zero charge (PZC), pH and soil negative charges. FA-CM mixture as a soil ameliorant decreased P sorption but it increased available P in Ultisols by increasing both soil pH and negative charges. The application of FA-CM at 30 tons ha-1 and P at 174 kg P2O5 ha-1 resulted in better increases in soil charges than any other combinations. However, the lowest P sorption 127.07 mg kg-1) and the highest available P (102.21 mg kg-1 ) was resulted in by the applications of 42.64 tons of FA-CM ha -1 and 261 kg P2O5 ha-1.