The value chain extension strategy of Sasakawa Africa Association focuses on improving the capacity of national agricultural extension systems and follows various thematic areas along the value chain to address key challenges accountable for low income households and poverty in Africa. Farmer learning platform is a model designed to increase crop productivity and encompasses demonstration plots where technological packages demonstrated significantly outperformed other technology plots in crop productivity and average profit margins. Enterprise-oriented production, postharvest and trading centers are value adding models designed to improve the effectiveness of extension and adoption of postharvest and agricultural processing technologies by producers. The use of the above along with necessary capacity building has facilitated the development of profitable business linkages of smallholder farmers with financial institutions and reliable market opportunities. The community association trader-trainer model is a marketoriented business approach applied in combination with other extension models. In 2018, 297 community-based commodity association trader-trainers were mobilized and capacitated to improve farmer group dynamics and developed collective input and output access and cluster aggregation centers at community level where various agricultural produces were mobilized and collectively aggregated, and valued at about 3.9 million USD. The supervised enterprise project model is an innovative agricultural extension model developed along with above models for capacity development of extension agents and transfer of technologies to smallholder farmers. Over 6000 supervised enterprise projects have been introduced into 27 universities in 12 African countries for training front-line extension officers and extension delivery to farming communities.

Production is the basis of value-chain which is a key factor in Agricultural Transformation Agenda (ATA) in Nigeria. Thus, for successful production of horticultural crops the importance of climate cannot be overemphasized. Therefore, in this era of climate change there is the need to study farmers' knowledge of climate change and their production level. The study was carried out in Nigeria. Multistage sampling technique was used to arrive at a study population of 441 tomato and citrus farmers. Data were collected using Focus Group Discussions (FGDs), structured interview schedule and secondary data (FAOSTAT). It was analyzed using descriptive statistics (frequencies, percentage and pie charts) and inferential statistics (Pearson Product Moment Correlation). There existed no significant relationship between knowledge level of respondents and change in production of both crops. The reason for this could be that no matter what the level of knowledge one may have on the subject of climate change it does not have anything to do with production, adaptation strategies is the key. Citrus and tomato farmers' adaptation strategies to climate change includes among others crop management, use of varieties resistant to pests and diseases, altering the timing or location of cropping activities, different planting dates and shortened length of growing period. In conclusion climate change has affected the production of horticultural crops therefore for ATA to have a good footing there is the need to focus on the adaptation strategies that can combat the effect of climatic changes. Key words: Horticultural crops, Horticultural farmers, Climate, Production, Knowledge,

No abstract