P USE EFFICIENCY BY CORN (Zea mays L.) ON ULTISOL DUE TO APPLICATION 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: |
Brawijaya University
, 2014
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| Subjects: | |
| Online Access: |
http://eprints.unsri.ac.id/7073/1/392%2D2328%2D1%2DPB.pdf http://www.agrivita.ub.ac.id/index.php/agrivita/index http://eprints.unsri.ac.id/7073/ |
Daftar Isi:
- Low P availability is the main constraint for crops on acidic soil such as Ultisols due to high soil P sorption. The objective of current research was to determine the effect of coal fly ash-chicken manure mixture application on P use efficiency by corn (Zea mays L.) on Ultisols. The research was arranged according to Factorial Completely Randomized Design with three replicates. The treatments tested were the rates of FA-CM mixture (w/w of 1:1) which consisted of 0, 15, 30, 45 and 60 tons ha-1, and P fertilizer rates that consisted of 0, 0.5, 1.0, 1.5 and 2.0 times of P requirement to achieve 0.2 μg P mL in soil solution (equivalent to 0, 87, 174, 261 and 348 kg P2O5 ha-1). Results of current research showed that P use efficiency by corn on Ultisols had been increased through the addition of FACM in combination with P fertilization at the rate of 87 kg P2O5 ha-1. The optimum rate of FA-CM in combination with P fertilizer at the rate of 87 kg P2O5 ha-1 was 28.60 tons ha-1, with P uptake efficiency of 42.41 % and agronomic P efficiency of 82.53 mg shoot dry weight/mg P from fertilizer.