Just because some one living in Africa uses green manure doesn't mean it is right, city limit warrior.
If you lack the common sense to not use green manures, just search the web for info.
"1) Never feed fresh chicken manure to young, tender plants! Fresh chicken manure is "hot," meaning it is very high in nitrogen and will "burn" the growing plants. This will kill your plants! Also, too much nitrogen can produce negative plant growth. This is why you need to age your chicken manure!"
http://poultryone.com/articles/manure.html
"Fresh manure is not desirable for garden use in the opinion of most gardeners and should be aged before using. Feeding fresh Chicken manure as fertilizer for gardening to growing plants can burn them because it has such high levels of nitrogen. An overabundance of this gas could produce negative plant growth and possibly destroy the plants.
Chicken manure can be stored and composted. When making chicken manure compost, raw manure should be piled, sprinkled with topsoil, and occasionally turned with a garden fork. Composting stabilizes nitrogen and potash levels and kills bacteria, viruses, and worm eggs. You can purchase a ready made compost bin or design your own."
http://www.gardening-tips-idea.com/Chicken-Manure-Fertilizer.html
"Chicken manure
Poultry manure (chicken in particular) is the richest animal manure in N-P-K. Chicken manure is considered "hot" and must be composted before adding it to the garden. Otherwise, it will burn any plants it comes in contact with."
http://www.plantea.com/manure.htm