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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Iswari Saraswati Dewi
Balai Besar Bioteknologi dan Sumber Daya Genetik
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Konstribusi Akumulasi Silikat, Nitrogen dan Aluminium terhadap Ketenggangan Aluminium dan Ketahanan terhadap Penyakit Blas pada Padi Gogo , Bakhtiar; Bambang Sapta Purwoko; , Trikoesoemaningtyas; Iswari Saraswati Dewi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 3 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.15 KB) | DOI: 10.24831/jai.v37i3.1235

Abstract

Aluminum (Al) toxicity and blast disease are the most important yield-limiting factors for upland rice production in acid soils. The objective of this experiment was to examine the contribution of accumulation of Silicate (Si), Nitrogen (N) and Al in plant tissue on Al tolerance and blast disease resistance in upland rice. The experiment was arranged in a split-split plot design with 2 replications. Main plots were randomly assigned to blast treatment (control and inoculation to blast fungi). Subplots were assigned to control box (lime 1.5 AlEC) and another acid soils (no lime) box and sub-subplots were assigned to the tested genotypes. The result of the experiment showed that leaf blast disease resistance in rice cannot be solely explained by Si or N content in shoot tissue. The resistant to leaf blast disease might be attributed by high ratio Si/N weight in shoot. Al tolerance was ascribed by low reduction in root growth, high shoot dry weight, high Si content in shoot, and as well as high of  Si/Al ratio in root.   Key words:  Al-tolerance, blast disease, upland rice, Si/Al ratio
Co-Authors Bambang Sapta Purwoko Mudinillah, Adam Trikoesoemaningtyas