The production and use of chemicals is an important source of economic welfare in Ghana. However, many chemicals also enter the environment and chemical pollution remains a major environmental issue in Ghana. In Ghana, mining and agriculture remain the major contributors to chemical pollution. For mining; mercury, cyanide and arsenic are normally the reported cases of contamination. Studies hav...

tions that, up until that time, had only received an episodic focus. One drawback of the book is that the authors cover a wide gamut of topics. Consequently, disease-specifi c topics are presented without adequately providing the necessary background on the disease entity to the reader. Not all readers may fully understand the necessary disease-specifi c background that would make the discussio...

The improvement and application of pest and disease models to analyse and predict yield losses including those due to climate change is still a challenge for the scientific community. Applied modelling of crop diseases and pests has mostly targeted the development of support capabilities to schedule scouting or pesticide applications. There is a need for research to both broaden the scope and e...

Cultivating oranges is one of the main fruit commodities in Bali. Citrus cultivation often experiences problems, which insect pests and plant diseases. Pests that attack are whitefly. Whiteflies cause damage directly or indirectly. It results stunted leaves because whitefly sucks on young shoots leaves. Indirectly, has been reported as a vector various diseases caused by viruses. Based this, it...

Sweetpotato is the seventh most important food crop in the world. It is mainly used for human food, animal feed, and for manufacturing starch and alcohol. This crop, a highly heterozygous, generally self-incompatible, outcrossing polyploidy, poses numerous challenges for the conventional breeding. Its productivity and quality are often limited by abiotic and biotic stresses. Gene engineering ha...