EFFECT OF ENVIRONMENTAL FACTORS ON BEAN PESTS AND YIELD QUALITY IN DIFFERENT AGRO-ECOLOGICAL ZONES IN KENYA

The common dry bean Phaseolus vulgaris L. is an important source of protein and minerals. However, damage by field pests and adverse environmental factors contribute to loss and poor market value of the grain quality. Most of the bean varieties in Kenya are grown in the Rift valley, Eastern and central parts of Kenya. A country wide survey in the main bean production regions was carried out in 2012/13 during the two growing seasons. Some 10...