Fertiliser nitrogen use in Australia has increased from 35 Gg N in 1961 to 972 Gg N in 2002,
and most of the nitrogen is used for growing cereals. However, the nitrogen is not used …

East and Southern Africa have soils that are still relatively fertile, notably those in the
Highlands, associated with the Rift valley area. The lower areas are less well-endowed …

For the last two decades a significant portion of the world's agricultural research has focused
on rice. That research resulted in the development of modern rice varieties and a modern …

Millions of smallholders in the tropics are farming under rainfed condi tions in diverse and
risk-prone environments. In a constant struggle to survive, farm communities have …

Agriculture Pollutes: pesticides can destroy wildlife and some are toxic to humans; some
fungicides and herbicides cause cancer. Nitrates result in the contamination of drinking …

The research reviewed in this article shows that a sound scientific basis for the efficient
management of nitrogen fertilizers in cereal production has been established, particularly in …

One of the main approaches for safeguarding food security, sustainable development has
increased demand for knowledge on fertilizer management in crop production. Among …

Rice is the most important food crop in the developing countries of Asia, where population
densities are very high and overall dietary levels are not adequate. In south and southeast …

Rice production in Asia must increase 2.2–2.8% annually to keep abreast of increasing
population. Greater fertilizer use and crop intensification together with varietal improvement …

Recent research suggests that there is considerable potential for exploiting genotypic
differences in N utilization efficiency by crops. Our research attempted to identify traits …