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All Journal Jurnal Fitopatologi Indonesia Biological Environment and Pollution
Asysyuura, Asysyuura
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Agriculture, Biological Sciences & Forestry Energy Environmental Science Medicine & Pharmacology

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Identifikasi Patotipe Xanthomonas oryzae pv. oryzae dari Tanaman Padi di Sulawesi Selatan Asysyuura, Asysyuura; Nawangsih, Abdjad Asih; Mutaqin, Kikin Hamzah; Sudir, Sudir
Jurnal Fitopatologi Indonesia Vol 13 No 3 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (355.562 KB) | DOI: 10.14692/jfi.13.3.73

Abstract

Xanthomonas oryzae pv. oryzae is the causal agent of bacterial leaf blight (BLB), one of important constraint in rice production. The pathogen is known to have many pathotypes which caused difficulties in disease control. This research was conducted to determine the distribution of X. oryzae pv. oryzae’s pathotypes in seven districts in South Sulawesi. Grouping of pathotypes was performed according to Kozaka method, i.e. based on the response of differential rice varieties. Infection of X. oryzae pv. oryzae was confirmed by PCR using specific primers XOR-R2/XOR-F.  Out of 36 isolates, 29 isolates were identified as X. oryzae pv. oryzae which belong to pathotype III (6 isolates), pathotype IV (21 isolates), and pathotype XII (2 isolates).  This result indicated that X. oryzae pv. oryzae pathotype IV was distributed widely in South Sulawesi.
Comparative study of soil amendment and organic fertilizer use to optimize agricultural dryland Suherman, Suherman; Kurniawan, Edi; Asysyuura, Asysyuura; Asmi, Husni; Fitriani, Indah; Zulkifli, Zulkifli; Fatwa, Abdul Halil
Biological Environment and Pollution Vol. 5 No. 1 (2025)
Publisher : Association for Scientific Computing, Electronics, and Engineering (ASCEE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/bioenvipo.v5i1.893

Abstract

This study investigates the effects of different organic soil amendments on the chemical characteristics of dryland soils to enhance agricultural practices in arid areas. Employing a randomized complete block design, six treatments were administered oversix-months on acidic soils with low organic matter concentration, exemplifying typical dryland conditions in tropical areas. The treatments comprised high and moderate doses of mixed organic compounds, alongside control groups without amendments. Soil samples were analyzed pre- and post-treatment for pH, carbon, nitrogen, phosphorus, and potassium concentrations. Results demonstrate that high-dose organic mixtures markedly enhanced soil pH, carbon content, and nutrient availability, particularly phosphorus and potassium, in comparison to control and lower-dose treatments. The research underscores the essential importance of suitable amendment kinds and quantities in improving soil quality and sustainability. The findings indicate that the strategic application of organic amendments can markedly enhance the chemical properties of dryland soils, hence promoting more sustainable farming operations.
Co-Authors Abdjad Asih Nawangsih Asmi, Husni Edi Kurniawan Fatwa, Abdul Halil Indah Fitriani Kikin H Mutaqin Sudir Sudir, Sudir Suherman, Suherman Zulkifli Zulkifli