Evaluation of the effect of organic and inorganic fertilizers on yields of traditional vegetables in Bogetaorio village, Southwest Kenya
2002
Okoko, N.E.K.(KARI-Regional Reseach Kisii, Kenya) | Makworo, S.(KARI-Regional Reseach Kisii, Kenya)
Traditional vegetables, black nightshade (Solanum nigrum) and spider flower (Gynandropsis gynandra) form an important part of the diet of the Abagusii people. A participatory rural appraisal (PRA) carried out in Bogetaorio village in 1994 confirmed that traditional vegetable production was low due to the declining soil fertility. The PRA further indicated that declining soil fertility was caused by continuous cropping and soil erosion. Thus, on-farm trials were started in 1995 to; determine the response of traditional vegetables to organic, inorganic fertilisers and their combination and to estimate the cost of production of the various fertiliser treatments. Three years results showed that the combination of farm yard manure (FYM) and a quarter (15 kg PZ05+ 15 kg N ha-l) or half (30 kg PZ05+ 30 kg N ha-l) research recommended rates (RRR) of phosphate and nitrogen fertiliser gave higher fresh leaf yield of both black nightshade and spider flower. Farmers also preferred combination treatments of FYM and reduced rates of inorganic fertilisers because they are affordable compared to full research recommended rate of the inorganic fertilisers.
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Эту запись предоставил Kenya Agricultural Research Institute