Wright, G.C. and C.J. Smith, and 1.B. Wilson. 1988. Growth and yield of soybean under wet soil culture and conventional furrow irrigation in South-eastern Australia
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2003
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/22564/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=5479 |
Daftar Isi:
- To obtain information necessary in efforts of stabilizing of land productivity and controlling methane flux from rice field, a study on potassium and sulphur fertilization was carried out on dryland rice field at Palu valley, Central Sulawesi, from January to April 2003. The objectives of the experiment was to evaluate the efectivity of potassium and sulphur fertilizers in reducing methane production in plant rhizosphere and methane emission from rice field to the atmosphere, its effect on the availability of nutrients, and yield of rice cultivar 1R64. The experiment using a factorial experiment with randomized block design. The first factor was sulphur fertilizer consisted of 4 levels: 0, 37, 70, and 105 kg ha S. The second factor was potassium fertilizer consisted of 0, 37, and 75 kg K. Results of the experiments showed that application of sulphur fertilizer at 105 kg ha-1 S reduced methane flux until 52,05% (reduction was 15,88 mg ni2 III) compared to that without sulphur fertilizer. Potassium fertilizer increased availability of K 0.0039 cmol(+) kei for each increase of 1 kg ha4 K and sulphur fertilizer increased S availability 0.05 mg kg' for each increase of 1 kg liar S. The optimum rate of potassium and sulphur fertilizer was 78.60 kg hat K and 53.54 kg ha4 S, respectively. Keywords : Fluks CH4� plant nutrition, Sulphur, dan Kalium