Plant Science and Crop Protection Research Papers/Topics

Impact of low-cost management techniques on population dynamics of plant-parasitic nematodes in sweet potato

Abstract Sweet potato is an important food security crop but its production is limited by various biotic constraints including plant-parasitic nematodes (PPN). In Kenya, current PPN management practices in sweet potato have several limitations hence the need for alternative low-cost management strategies. This study evaluated the impact of intercropping maize and sweet potato (MS) and application of Tithonia diversifolia (MG), cow (CM) and goat manure (GM) on population dynamics of PPN and t...

Habitat suitability and distribution potential of Liberibacter species (“Candidatus Liberibacter asiaticus” and “Candidatus Liberibacter africanus”) associated with citrus greening disease

Abstract: Aim: To quantify current and predict future distribution of the citrus greening pathogens “Candidatus Liberibacter asiaticus” (Las) in Africa and “Candidatus Liberibacter africanus” (Laf) globally. Location: Africa. Methods: Three species distribution models (MaxEnt, BIOCLIM and Boosted Regression Trees) were used to predict the current and future potential distribution of Las in Africa, and the potential global distribution of Laf, using long-term bioclimatic variables. Tw...

Influence of Temperature on the Interaction for Resource Utilization between Fall Armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), and a Community of Lepidopteran Maize Stemborers La

Abstract: Intra- and interspecific interactions within communities of species that utilize the same resources are characterized by competition or facilitation. The noctuid stemborers, Busseola fusca and Sesamia calamistis, and the crambid stemborer, Chilo partellus were the most important pests of maize in sub-Saharan Africa before the recent “invasion” of fall armyworm (FAW), Spodoptera frugiperda, which currently seriously limits maize yields in Africa. This new pest is interacting wit...

Efficiency of Aphid and Thrips Vectors in Transmission of Maize Lethal Necrosis Viruses.

Abstract: Maize lethal necrosis disease occur in major growing regions of Kenya, causing losses of up to 100% estimated at 50 million US$ in 2014/15. The study was undertaken to evaluate the efficiency of thrips and aphids in transmission of maize lethal necrosis viruses. Maize seedlings were inoculated with adults and nymphs of Western flower thrip (Franklinella occidentalis), corn leaf aphids (Rhapolosiphum maidis) and Russian wheat aphid (Diuraphis noxia) carrying maize lethal necrosis vi...

Evaluation of African Maize Cultivars for Resistance to Fall Armyworm Spodoptera frugiperda(J. E. Smith) (Lepidoptera:Noctuidae) Larvae

Abstract: The fall armyworm (FAW) has recently invaded and become an important pest of maizein Africa causing yield losses reaching up to a third of maize annual production. The present studyevaluated different aspects of resistance of six maize cultivars, cropped by farmers in Kenya, toFAW larvae feeding under laboratory and field conditions. We assessed the arrestment and feedingof FAW neonate larvae in no-choice and choice experiments, development of larvae-pupae, foodassimilation under l...

Planting Material of Enset (Ensete ventricosum), a Key Food Security Crop in Southwest Ethiopia, Is a Key Element in the Dissemination of Plant-Parasitic Nematode Infection

Abstract: Enset (Ensete ventricosum), is a perennial herbaceous plant belonging to the family Musaceae, along with banana and plantain. Despite wild populations occurring in eastern, central and southern Africa, it is only in Ethiopia that the crop has been domesticated, where it is culturally and agriculturally symbolic as a food security crop. Although an under-researched orphan crop, enset serves as a staple food for about 20% of the Ethiopian population, comprising more than 20 million p...