http://197.159.135.214/jspui/handle/123456789/54 2026-08-06T04:30:21Z 2026-08-06T04:30:21Z Sanneh, Lamin http://197.159.135.214/jspui/handle/123456789/1321 2026-08-04T11:52:25Z 2023-05-30T00:00:00Z

Growth and Yield Response of Tomato Cultivars to Nitrogen Fertilizer and Organic Amendments and Modelling Climate Impact Sanneh, Lamin Tomato production in The Gambia is ranked second after onion in terms of production acreage and highly consumed. An agronomic trial was conducted in 2021 and 2022 at Horticulture unit in Yundum. The main objective was to enhance tomato production in The Gambia through determination of effects of organic and inorganic fertilizers as well as model climate impact on the performance of Mongal F1 and Thorgal F1 tomato varieties. The design of the experiment was split-plot design with three replications and four treatments such as Leucaena leaves, Poultry bedding, Nitrogen fertilizer and Leucaena leaves + Poultry bedding. Constant increase in temperature, wind and decrease in rainfall, an unpredictable rainfall pattern and prolonged drought are effects causing severe dropping of flowers and rotting of tomato fruits. Use of synthetic pesticide, planting of trees and fertilizers are use as adaptation strategies. Mongal F1 tomato variety had performed better than Thorgal F1. Poultry bedding and Leucaena leaves has increased soil fertility than Leucaena leaves + poultry bedding and Nitrogen. Response to growth and yield, Leucaena leaves and poultry bedding performed better than Nitrogen and Leucaena leaves +poultry bedding. The results from DSSAT (CROPGRO) model shows the existence of climate change such as unpredictable and erratic rainfall, higher temperatures etc. The model indicated that, highest amount of rainfall was recorded in September, and the lowest was in July, contrary both temperature’s solar radiations were very high in July and declined in September. In addition, days after start of simulations for tomato growth, and yield, treatments did not impacted well due to their longterm effects. A thesis, in the Rural Polytechnic Institute of Training and Applied Research (IPR/IFRA) in partnership with the West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), submitted in partial fulfilment of the requirements for the Doctor of Philosophy in Climate Change and Agriculture of the University of Sciences, Techniques and Technologies of Bamako (USTTB)

2023-05-30T00:00:00Z Ouedraogo, Harouna Diallo, Yacouba Hien, Edmond Yameogo, Louis P. Nehren, Udo http://197.159.135.214/jspui/handle/123456789/1320 2026-08-04T10:35:31Z 2023-05-23T00:00:00Z

Resilience capacity-building of smallholder farmers facing climate change risks: The value of practicing climate-smart agriculture techniques on groundnut and sorghum. Ouedraogo, Harouna; Diallo, Yacouba; Hien, Edmond; Yameogo, Louis P.; Nehren, Udo In Burkina Faso, agriculture is facing three major constraints. Firstly, the extreme events of climate change such as drought spells and temperature increases. Secondly, soil erosion and low soil fertility. Third, the weak use of organic and chemical fertilizers because of its unavailability, its pricey and the poor income of the farmers. The improvement of soil, mitigation and adaptation of climate change variability is needed to build strong resilience capacity of smallholder farmers. This paper focuses on three objectives. First to analyse the key determinants of indigenous zaï and stone rows practices adoption. Afterwards to determine the influence of zaï, stone rows, ridge tillage, and zaï combined with stone rows on soil health and the performance of groundnut and sorghum yields, and eventually to propose possible policy responses. A thesis, in the Rural Polytechnic Institute of Training and Applied Research (IPR/IFRA) in partnership with the West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), submitted in partial fulfilment of the requirements for the Doctor of Philosophy in Climate Change and Agriculture of the University of Sciences, Techniques and Technologies of Bamako (USTTB)

2023-05-23T00:00:00Z Sanneh, Lamin http://197.159.135.214/jspui/handle/123456789/1278 2026-07-21T09:20:41Z 2023-05-01T00:00:00Z

Growth and Yield Response of Tomato Cultivars to Nitrogen Fertilizer and Organic Amendments and Modelling Climate Impact Sanneh, Lamin Tomato production in The Gambia is ranked second after onion in terms of production acreage and highly consumed. An agronomic trial was conducted in 2021 and 2022 at Horticulture unit in Yundum. The main objective was to enhance tomato production in The Gambia through determination of effects of organic and inorganic fertilizers as well as model climate impact on the performance of Mongal F1 and Thorgal F1 tomato varieties. The design of the experiment was split-plot design with three replications and four treatments such as Leucaena leaves, Poultry bedding, Nitrogen fertilizer and Leucaena leaves + Poultry bedding. Constant increase in temperature, wind and decrease in rainfall, an unpredictable rainfall pattern and prolonged drought are effects causing severe dropping of flowers and rotting of tomato fruits. Use of synthetic pesticide, planting of trees and fertilizers are use as adaptation strategies. Mongal F1 tomato variety had performed better than Thorgal F1. Poultry bedding and Leucaena leaves has increased soil fertility than Leucaena leaves + poultry bedding and Nitrogen. Response to growth and yield, Leucaena leaves and poultry bedding performed better than Nitrogen and Leucaena leaves +poultry bedding. The results from DSSAT (CROPGRO) model shows the existence of climate change such as unpredictable and erratic rainfall, higher temperatures etc. The model indicated that, highest amount of rainfall was recorded in September, and the lowest was in July, contrary both temperature’s solar radiations were very high in July and declined in September. In addition, days after start of simulations for tomato growth, and yield, treatments did not impacted well due to their longterm effects. A Policy brief, in the Rural Polytechnic Institute of Training and Applied Research (IPR/IFRA) in partnership with the West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), submitted in partial fulfilment of the requirements for the Doctor of Philosophy in Climate Change and Agriculture of the University of Sciences, Techniques and Technologies of Bamako (USTTB)

2023-05-01T00:00:00Z Ouedraogo, Harouna Diallo, Yacouba Hien, Edmond Yameogo, Louis P. Nehren, Udo http://197.159.135.214/jspui/handle/123456789/1277 2026-07-21T09:13:32Z 2023-05-01T00:00:00Z

Resilience capacity-building of smallholder farmers facing climate change risks: The value of practicing climate-smart agriculture techniques on groundnut and sorghum. Ouedraogo, Harouna; Diallo, Yacouba; Hien, Edmond; Yameogo, Louis P.; Nehren, Udo In Burkina Faso, agriculture is facing three major constraints. Firstly, the extreme events of climate change such as drought spells and temperature increases. Secondly, soil erosion and low soil fertility. Third, the weak use of organic and chemical fertilizers because of its unavailability, its pricey and the poor income of the farmers. The improvement of soil, mitigation and adaptation of climate change variability is needed to build strong resilience capacity of smallholder farmers. This paper focuses on three objectives. First to analyse the key determinants of indigenous zaï and stone rows practices adoption. Afterwards to determine the influence of zaï, stone rows, ridge tillage, and zaï combined with stone rows on soil health and the performance of groundnut and sorghum yields, and eventually to propose possible policy responses. A thesis, in the Rural Polytechnic Institute of Training and Applied Research (IPR/IFRA) in partnership with the West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), submitted in partial fulfilment of the requirements for the Doctor of Philosophy in Climate Change and Agriculture of the University of Sciences, Techniques and Technologies of Bamako (USTTB)

2023-05-01T00:00:00Z