Research in the Netherlands has revealed that under sub-otpimal conditions, the best way for rice breeders to improve the rice harvest is to produce varieties whose performance is not fertiliser dependent. However, specifically modified varieties need to be developed for rice growing under saline conditions.
Gambian researcher Baboucarr Manneh investigated variations in the rice yield and the possibilities for increasing this under a variety of environmental circumstances by means of plant breeding. For example, he discovered that in general breeding is best directed towards varieties that are adapted to a wide range of conditions and whose performance is not fertiliser dependent. However for cultivation on silt soils, only varieties with a genetic predisposition for these specific conditions should be used.
Manneh carried out field experiments with rice in salt water and in fresh water in The Gambia in West Africa. He also studied the effect of nitrogen fertilisation on the rice yield.
Sonja Jacobs | alfa
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