CHEMICAL CONTAMINATION AND SEDIMENT TOXICITY IN SOME PARTS OF IBADAN METROPOLIS, SOUTHWESTERN NIGERIA

2016 ◽  
Author(s):  
Olumuyiwa Michael Ajibade ◽  
Estuaries ◽  
1996 ◽  
Vol 19 (4) ◽  
pp. 901 ◽  
Author(s):  
Douglas A. Wolfe ◽  
Edward R. Long ◽  
Glen B. Thursby

2006 ◽  
Vol 22 (4) ◽  
pp. 299-312 ◽  
Author(s):  
F. Galgani ◽  
J. F. Chiffoleau ◽  
V. Orsoni ◽  
L. Costantini ◽  
P. Boissery ◽  
...  

1988 ◽  
Vol 33 (11) ◽  
pp. 992-993
Author(s):  
Bernard Weiss

Author(s):  
Hasrat Arjjumend ◽  
Konstantia Koutouki ◽  
Olga Donets

The use of unsustainable levels of chemical fertilizers and plant protection chemicals has resulted in a steady decline in soil and crop productivity the world over. Soil biology has undergone irreversible damage, coupled with a high concentration of toxic chemical residues in plant tissues and human bodies. Agricultural practices must evolve to sustainably meet the growing global demand for food without irreversibly damaging soil. Microbial biocontrol agents have tremendous potential to bring sustainability to agriculture in a way that is safe for the environment. Biopesticides do not kill non-target insects, and biosafety is ensured because biopesticides act as antidotes and do not lead to chemical contamination in the soil. This article is part of a larger study conducted in Ukraine by researchers at the Université de Montréal with the support of Mitacs and Earth Alive Clean Technologies. The responses of farmers who use biofertilizers (“user farmers”) and those who do not (“non-user farmers”), along with the responses of manufacturers or suppliers of biofertilizers, and research and development (R&D) scientists are captured to demonstrate the advantages of applying microbial biopesticides to field crops. Participants reported a 15-30% increase in yields and crop production after the application of biopesticides. With the use of biopesticides, farmers cultivated better quality fruits, grains, and tubers with a longer shelf life. Moreover, while the risk of crop loss remains high (60-70%) with chemically grown crops, this risk is reduced to 33% on average if crops are grown using biopesticides. The findings indicate that a large proportion of farmers would prefer to use biopesticides if they are effective and high quality products. In this context, the quality and effectiveness of products is therefore very important. Despite their benefits to soil, human health, and ecosystems, biopesticides face significant challenges and competition vis-à-vis synthetic pesticides for a variety of reasons. Therefore, the development of biopesticides must overcome the problems of poor quality products, short shelf life, delayed action, high market costs, and legal/registration issues.


Author(s):  
Chloé Meyer

Population using an improved drinking water source (piped water into dwellings, yards or plots; public taps or standpipes; boreholes or tubewells; protected dug wells; or protected springs and rainwater) that is located on premises and available when needed and which is free of faecal and priority chemical contamination. Basin Pollution Quality Waste


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