Grain Legumes and Green Manures for Soil Fertility in ... - cimmyt

areas, which many cattle owners do not use. Please
comment.
A: Farmers believe that use of manure burns their
crop in drier weather. This is because in the past
AGRITEX has recommended high rates of
application and farmers who have tried these have
had bad experiences with the recommendations.
Revising the recommendations downwards and
experimenting with low quantities of manure is
resulting in farmers revising their assessment of the
risk associated with manure use and adopting
manure. There is also the problem of a shortage of
labour, especially because of high migration to
South Africa and HIV-Aids which increases the
opportunity cost of labour (probably to a higher
level than used in our analysis) and so is making
use of manure less profitable than the analysis
suggests.
General Discussion
C: We do not have to keep doing screening. How
are we sure that we target the correct accessions
within the existing gene banks?
Q: Is there any research done by scientists here that
has got results on the contribution of the depth of
pigeonpea roots for bringing up nutrients and to
organic matter content?
C: The screening of alternative legumes should be a
confinuous process against the biodiversity of pests
and changing environments.
C: When to stop screening? The search for new
materials amongst the available genetic resources
should continue in accordance with projected
demands - for better traits, crop diversification, etc,
so you do not stop(
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Grain legumes and Green Manures for Soil Fertility in Southern Atrica