Objective of this activity is to assess and refine the technologies based on local problems to best fit the socio-economic condition of the farmers and to identify the production constraints. During 2016-17, 12 nos. of On Farm Trials have been conducted on different crops involving 126 farmers, in different villages of Ranchi District. Details of the OFTs conducted during the year are as given below.
| On Farm Trial For Assessment and Refinement of Technologies | No of Farmers Involved |
| Assessment of performance of ginger crop against Soft rot disease | 10 |
| Assessment of techniques to reduce fruit of bitter gourd for higher production and productivity | 10 |
| Assessment of performance of raised bed and liquid manure in ginger under rain fed condition of Ranchi Distrct | 07 |
| Assessment of effect of urea(4%)and KNO3(4%) on mango yield | 20 |
| Assessment of performance of leaf carpeting and planting system in ginger under rain fed condition of Ranchi District | 07 |
| Addressing poor nodulation in chickpea in acdic of Ranchi District by seed priming | 10 |
| Assessment of performance if high yield varieties of onions by multi-locational trial in Ranchi District for increasing production | 10 |
| Assessment of performance of different backyard poultry breed in rural area | 10 |
| Assessment of performance of different herbal low cost de-wormers in goat | 12 |
| Assessment of Soyabean as alternate crop of upland paddy under rain fed condtion | 10 |
| Assessment of low cost housing and feed management in backyard poultry unit for increasing profitability | 10 |
| Assessment of different Deshi varities of paddy for increasing profitability of puffed rice making enterprise | 10 |