A review of vegetables and fruit crop diseases research: achievements and prospects
1995
Mohamed Yesuf | Getachew Ayana (Nazret Research Center (Ethiopia))
Vegetable diseases are the major production constraints throughout the country both under rain-fed and irrigation systems. They differ greatly in severity and frequency of occurence, depending on the season. Diseases cause a considerable amount of yield and quality loses every year. The geographical distribution and relative importance of vegetable diseases were assessed in major production zones of the country, and accordingly 11 diseases on tomato, 27 diseases on pepper and 10 on onion have been identified. Research on fruit crop diseases has focused on survey. FAO experts in collaboration with IAR and state farm enterprise staff have made survey to assess factors liming cirus production and related crops in different cirus production areas under irrigation. Vins and vins like-disease and fungal diseases of Citrus, leaf curl of peach, cigar-end rot and burrowing nematode of banana and downy and powdey, mildews of grapes were reported as important diseases. Recently an extensive survey was made on farmers' fields in the rift valley in papaya growing areas, and reported that papaya production suffers due to anthracnose disease. However, frequent interruption in staff continuity and/or insufficient allocation of research time and gaps in knowledge on which area to focus have made progress rather slow in fruit diseases research. The other area of emphasis was chemical control of powdery and downy mildew of grapes. Effective fungicides and rate of application have been identified.
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