High-yielding rice cultivars in Peninsular Malaysia
1989
Yusoff, E. | Tay, C.Y. (MARDI [Malaysian Agricultural Research and Development Inst.] Rice Research Div. Bumbung Lima Sta., Kerala Batas, Seberang Perai, Penang (Malaysia))
Current rice yields in Peninsular Malaysia are highly variable, but indications are that this station will improve with broader adoption of modern crop management practices, improvement in infrastructure, and increased adoption of modern verieties. In the field, leaf area index (LAI) and spikelet number/sq. m. limit yield. These limitations are dictated more by the current subsidized fertilizer rate and currently recommended plant density than by limitations in varietal response per se. If yields in excess of 5 t/ha are to be achieved, it is imperative that LAI be increased through increased plant density/sq. m. and higher fertilizer rates. This approach would be in line with current emphasis on increase mechanization. Current plant type may need to be remodeled to meet operational and management requirements. In this context, serious consideration should be given to plant height reduction and judicious use for short-duration varieties. Short-duration varieties would be especially useful in controlling deviations in cropping schedules. Physiological characteristics of varieties already released have not been fully tapped.
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