World Journal of Agricultural Research
ISSN (Print): 2333-0643 ISSN (Online): 2333-0678 Website: Editor-in-chief: Rener Luciano de Souza Ferraz
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World Journal of Agricultural Research. 2014, 2(6), 309-314
DOI: 10.12691/wjar-2-6-11
Open AccessArticle

Effects of Silicon, Copper and Zinc Applications on Sheath Blight Disease Severity on Rice

Ei Ei Khaing1, Zainal Abidin Mior Ahmad1, , Wong MuiYun1, 2 and Mohamad Razi Ismail2, 3

1Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia

2Institute of Tropical Agriculture, Universiti Putra Malaysia

3Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia

Pub. Date: December 24, 2014

Cite this paper:
Ei Ei Khaing, Zainal Abidin Mior Ahmad, Wong MuiYun and Mohamad Razi Ismail. Effects of Silicon, Copper and Zinc Applications on Sheath Blight Disease Severity on Rice. World Journal of Agricultural Research. 2014; 2(6):309-314. doi: 10.12691/wjar-2-6-11


Rice (Oryza sativa L.) sheath blight disease is one of the most important diseases globally which makes its management very difficult. Severe soil micronutrients deficiency and high dosage of nitrogen fertilizer leading to the development of sheath blight disease has become a constraint in rice production in Malaysia. The study was conducted to compare between MR219 and MR253 rice varieties to sheath blight inoculations and micronutrient applications and to determine the impact of disease on rice yield. Sheath blight epidemics in pots were initiated by inoculation at maximum tillering growth stage under glasshouse conditions in April 2013. Silica gel, copper sulphate and zinc sulphate were applied to the soil prior to planting at the rates of 360g, 0.30 g, 0.45g per 15 kg soil respectively. Inoculation significantly (P=0.05) increased sheath blight severity and incidence which caused yield losses of 11% in moderately resistant variety MR219 and 50% in moderately susceptible variety MR253. Micronutrients application reduced sheath blight incidence and severity regardless of varieties. Fertilization with Si was significantly more effective than Cu and Zn treatments in minimizing yield loss due to sheath blight in both varieties.

silicon copper zinc sheath blight disease grain yield

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