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Advanced Musa yield trial at the University of Ghana Agricultural Research Station, Kade; 2: banana weevil and nematode resistance
(1996)The Plantain and Banana Improvement Program (PBIP) of IITA has developed black Sigatoka resistant tetraploid hybrids of plantains (PITA) and cooking banana (BITA). The main selection criteria were black Sigatoka resistance, yield, and fruit quality. However, it was felt necessary to also determine the resistance of these accessions to natural infestation by banana weevil and nematodes which are the most important pests of plantains. This report concerns weevil and nematode damage during the first ... -
High protein lupins: diversifying the pulse industry in western Canada
(2004)The pulse crop industry in Canada has grown rapidly in the past decade, with approximately 3.6 million tonnes of production from 2.9 million hectares in 2001, compared to 1.0 million tonnes of production from 0.6 million ha in 1991 (Pulse Canada, 2003). In order to achieve the pulse crop industry’s goal of sustainable annual crop rotations based on a 20-25% legume component, additional pulse crops are developed so that all prairie regions have at least two legume crop choices that provide economic ... -
Innovations for plant production in the risky environment of semiarid Niger: a multilevel modeling assessment
(2004)The paper deals with the problem of economically sustainable technological innovation for agriculture in the risky environment of Niger’s Sahelian zone smallholders. For these farmers, low-input mineral fertiliser technologies have been developed in the nineties in order to increase the productivity of their millet farming systems. As economic assessment cannot be restricted to plot or farm assessment alone but has to take into account also markets and marketing patterns, a sequence of models has ... -
The status of fungal tuber rots as a constraint to cassava production in the Pouma district of Cameroon
(2004)Fungal rots have been reported as a limiting factor to cassava production in the humid forests of Central and West Africa. Starting April 2003 tuber rots were studied for one year as part of a diagnostic survey designed to investigate biophysical and crop management factors limiting cassava production in Pouma district, located halfway between Douala and Yaoundé in Cameroon. This paper reports the extent of root rot occurrence in the study area comprising of 62 farmer-managed trials. Root rot data ... -
QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet
(2004)The cassava mosaic disease (CMD) is an economically important disease of the food crop cassava (Manihot esculenta Crantz) in Africa. Quantitative trait loci (QTLs) associated with resistance to CMD were identified using 132 F1 progeny derived from a cross between the CMD resistant accession TMSI30572 and the susceptible landrace TME117. The population was evaluated in the field for two growing seasons in Nigeria. Mean disease severity scores (MDSS) were used for QTL analysis. Five highly significant ... -
Demographic parameters and main biotic factors of two Dacini species, Bactrocera cucurbitae and Dacus ciliatus (Diptera, Tephritidae) in reunion Island
(2004)Réunion Island is characterized by a particular orography and a variable distribution of host plants for Dacini species. A complex of 3 Dacini species infests 16 host plant species belonging to the family Cucurbitaceae. These three species of vegetable fruit flies represent the primary pests of this plant family and are the main insect problem for cucurbit crops. We included in this study the two speciesB. cucurbitae (melon fly) and D. ciliatus (Ethiopian fruit fly). Adults of B. cucurbitae are ... -
Evaluating sweetpotato clones for consumers in southwestern Nigeria
(2004)Sweetness, consistency, fibre content and yield are good criteria determining consumer's preference of boiled sweet potato (Ipomoea batatas L.) roots in the south-western Nigeria. From July 2000 to September 2001, some 15 sweet potato clones were evaluated at Ibadan so as to recommend suitable ones for cultivation and consumption in this area. Three trials was carried out within this period in the field, polybag and then field environments. The mean fresh root yield for all trialsacross 3,4 and 5 ... -
Gari: food for the rich or the poor consumers in Nigeria
(2004)The comsumption of garri- a dry granule processed from cassava roots in Nigeria is now a nation-wide habit and practice. Its price fluctuates so much that the question is now being asked as to whom should the commodity be target to? The poor or the rich? This paper reports a study of the faqctors affecting price changes and the determinants of who will in the foreseeable future be able to use the most cherished product form of cassava, a staple food in Nigeria. The preference of this form by ...
