Characterization of biological features of the Kongwa weed (Astripomoea hyoscyamoides vatke verdc) in Kongwa district, Central Tanzania

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dc.contributor.authorLusamila, Yacob Manyabuluba
dc.date.accessioned2023-01-30T12:27:05Z
dc.date.available2023-01-30T12:27:05Z
dc.date.issued2021
dc.descriptionDissertationen_US
dc.description.abstractA study was carried out in Kongwa ranch and surrounding villages to evaluate the biological characteristics of kongwa weed. The study site was stratified into three land use types namely; Grazing Land (GL), Crop Land (CL) and Bush Land (BL). The study used split-split-plot design, whereas study areas (Kongwa Ranch, Sejeli and Ngomai villages) were considered as main factor while land use types and soil textural compositions were treated as minor factors within the split plots. Range inventory techniques were used to determine species composition. Soil samples were taken from each land use types for laboratory analysis. Three textural soil types (Clay, Loamy-Sand, and Sand-Clay-Loamy) were determined from each land use type. Kongwa weed seeds were randomly planted in different soil texture sampled from grazing, crop and bush land. A total of forty one plant species were identified during range inventory of which the Kongwa weed was significantly higher in terms of coverage, occurrence and density in grazing land in the grazing land of Kongwa Ranch. The soil pH from grazing (5.35) and crop land (5.72) was relatively acidic than in the bush land (7.11) it seemed to favour the growth of kongwa weed. The highest mean soil bulk density values (1.57 g/100 cm -3 ) recorded in the grazing land and crop lands (1.49 g/100 cm -3 ). The relatively lowest soil bulk density in the bush land (1.42 g/100 cm -3 ) was attributed to litter decomposition available in the bushland soil. Moreover, the poor performance of Kongwa weed was observed in the bush land x clay interaction, crop land x clay interaction and grazing land x clay interaction rather than the two land use type x sandy clay loam and land-use type x loamy sand. By understanding appropriate biological characteristic of the weed in different land use types and soil textural soils may be useful in developing effective integrated control measures and increasing awareness among a wider range of stockholders such as agro-pastoralists, pastoralists, researchers and policy makers. Keywords: Growth, Characteristics, Kongwa weed, Land use type, Plant speciesen_US
dc.description.sponsorshipTanzania Commission for Science and Technology (COSTECH)en_US
dc.identifier.urihttp://www.suaire.sua.ac.tz/handle/123456789/4908
dc.language.isoenen_US
dc.publisherSokoine University of Agricultureen_US
dc.subjectAstripomoea hyoscyamoides Vatke verdcen_US
dc.subjectKongwa weeden_US
dc.subjectSeed yielden_US
dc.subjectSoil propertiesen_US
dc.subjectKongwa Districten_US
dc.subjectCentral Tanzaniaen_US
dc.subjectPlant speciesen_US
dc.subjectLand use typeen_US
dc.titleCharacterization of biological features of the Kongwa weed (Astripomoea hyoscyamoides vatke verdc) in Kongwa district, Central Tanzaniaen_US
dc.typeThesisen_US

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