Abstract
In West Africa, discoloration of the rice hull is influenced by water availability and soil properties. These two critical environmental factors were examined in controlled pot experiments in contrasting environments. Coarse upland soils and free-draining soil-water regimes increased hull discoloration disease severity, while lowland soils and water saturation minimized disease severity. However, with all soils tested, the humid, high-rainfall environment of S.E. Nigeria was found to increase hull discoloration in comparison to the drier West Nigerian environment.
Similar content being viewed by others
References
Awoderu, V A 1974 Rice diseases in Nigeria. PANS 20, 416–424.
Ayotade, K A and Salako, E A 1980 Reaction of wetland rice to dirty panicle disease and the influence of soil type and fertilization. Int. Rice Res. Newslet. 5, 15–16.
Castano, J 1982 Grain discoloration. In Annual Report, Rice program. Centro International de Agricultura Tropical Cali, Colombia.
Dobson, R L and Buddenhagen, I W 1990 Rice hull and caryopsis discoloration diseases. I. Severity and incidence in three ecosystems in West Africa. Plant and Soil 127, 103–106.
Elawad, S H and GreenJr, V E 1979 Silicon and the rice plant environment: a review of recent research. II Riso 28, 235–254.
Garrity, D P, Vidal, E T and O'Toole, J C 1984 Genotypic variation in the silica deposition on flowering rice spikelets. Ann. Bot. 54, 413–421.
Moormann, F R and Veldkamp, W J 1978 Land and rice in Africa: Constraints and potentials. In Rice in Africa. Eds. I WBuddenhagen and G JPersely. pp 20–43. Academic Press, London, U.K.
O'Toole, J C and Baldia, E P 1982 Water deficits and mineral uptake in rice. Crop Sci. 22, 1144–1150.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dobson, R., Aluri, K. Rice hull and caryopsis discoloration diseases. Plant Soil 127, 103–106 (1990). https://doi.org/10.1007/BF00010842
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00010842