Agriculture Reference
In-Depth Information
The yield of onion has declined from 12.1t/ha in 1999 to 3.3t/ha in 2007 for
Tono, while rice yield has been consistent around 4.7t/ha in both schemes.
Tomato yields have declined from 15.5t/ha in 1988 to 10t/ha in 2007 in Tono
and from 12.4t/ha in 1990 to 7.8t/ha in 2007 at Vea. This decline may be
due to loss of crop soil nutrient at both schemes and inadequate application
of fertilizer.
Figure 4.8: Wet season crop yield; a) Vea scheme b) Tono scheme
The wet season yields recorded in the Vea scheme show a constant yield of
0.7t/ha in groundnut and millet and a fluctuating rice yield ranging between
2.5 and 6.2t/ha during the period 1985-2007. Figure 4.8a reveals that there
has been no improvement in yield with respect to wet season farming at Vea
for a period of two decades. Wet season farming in Tono from 1985-2007 was
no different from Vea. Apart from rice which experienced a significant yield
increase from 0.91t/ha in 1985 to 4.3t/ha in 2007, all other crops had
constant yields; with maize recording 1.3t/ha, groundnut 0.8t/ha, cowpea
0.5t/ha, millet 0.7t/ha and soybean 1.1t/ha (see Figure 4.8b).
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