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In an experiment to study the range of host plants affected by P. solanacearum, the causal agent of bacterial wilt of many crops, seven varieties of beans were tested for their reaction to Pseudomonas solanacearum E.F. Smith. under shade conditions at Kawanda (Uganda) in 1982 and 1983. The bacteria (P. solanacearum) was isolated from all the bean varieties though not all the bean varieties sho ...

SUBJECT: huespedes; poder patogeno; pseudomonas; bacteriosis; microbiological analysis

SUBJECT: technologie; investigacion; investissement; investment; technology

African cassava mosaic virus (ACMV) is transmitted by the whiteflies Bemisia tabaci in East and West Africa as well as India. Both adult white flies and their larvae mostly colonize the youngest leaves of cassava plants. This encourages acquisition, inoculation and propagation of the pathogen in the field. Jatropha multifida and Manihot glaziovii are alternate host plants which play a big role ...

SUBJECT: manihot esculenta; huespedes; hosts; manihot glaziovii; hote

A survey carried out in 16 passion fruit growing districts of Uganda with the objective of establishing the effect and extent of damage of passion fruit by collar rot disease and isolating the causal organisms revealed that the disease was an epidemic in 7 districts, endemic in 5 districts and non-existent in 4 districts. Areas with no incidences of collar rot were encouraged to use grafted se ...

SUBJECT: pourriture; epidemie; podredumbres; passiflora edulis; enquete pathologique

The potential of four plant based storage media to preserve fresh cassava was investigated. These were contained in either wooden boxes lined or unlined with polythene sheets. For a storage duration of three weeks wet saw dust in lined boxes gave a significantly better tuber preservation with low levels of microbial growth, streaking and a higher degree of freshness of the tubers. This was fol ...

SUBJECT: technologie apres recolte; pourriture; aptitud para la conservacion; tubercule; mycotoxins

The sector profile of wood and wood industries and forestry resources is given. So far only two forest reserves have upto date inventories, these are Budongo and Mabira forest reserves. Summary of inventory reveals the species encountered, standing timber stock and annual allowance cuts. There are no inventories for other hardwood forests reserves. An account of forest plantation inventory is ...

SUBJECT: profitability; industria maderera; madera de frondosas; bois rond; forest inventories

The paper oulines strategies adopted by UNIFEM-AIP to assist African women in obtaining access to scientific information and in ensuring women emancipation and food security.

SUBJECT: seguridad alimentaria; securite alimentaire; africa; politica de desarrollo; food security

POSTED TO: African Crop Science Conference Proceedings [1023-070X]

Field surveys were conducted in six maize growing districts in Uganda in order to assess the species distribution of Cicadulina vector and obtain quantitative data on incidence of maize streak virus (MSV) in the country. Incidence and severity of MSV was generally low due to unfavourable weather conditions which retarded multiplication of the leafhoppers. C. Mbila was the most predominant spec ...

SUBJECT: resistance aux maladies; resistencia a la enfermedad; virus de las plantas; morbidite; virus des vegetaux

POSTED TO: Entomologist Newsletter

Screening of resistant maize varieties in order to control maize streak virus, a disease which is transmitted by leafhoppers of the genus Cicadulina is done through mass rearing of cicadulina leafhoppers. Routine screening of maize germplasm is carried out by placing viruliferum leafhoppers on each maize seedling and scoring the damage on the leaves.

SUBJECT: pest resistance; eleusine africana; cultural control; resistance aux maladies; insecticide

POSTED TO: Entomologist Newsletter

Relationship between time of planting maize (Zea mays L.) and damage by stem bores (Lepidoptera) was investigated. Early planted maize was vulnerable to stem borer attack and exhibited significantly higher foliar and stem damage, although late planted maize had a proportion of damaged cobs. Mid-planted maize exhibited moderate damge. The 21 day infested crop was significantly more tunnelled th ...

SUBJECT: date de plantation; stem eating insects; fecha de plantacion; perte apres recolte; insecte depredateur des tiges

POSTED TO: African Crop Science Conference Proceedings [1023-070X]