41 households have made to on farm trials in 1983. Table 6. Farmers' Monetary Contributions to On Farm Trials, 1983. Trial Number Acreage Contribution(S) cost/acre alyceclover 5 16 1,061.28 66.33 Pig. pea/millet 1 2.2 226.57 102.99 Trop. corn 5 25 3,372.75 134.91 Triticale 1 2.5 264.35 105.74 Wheat grazing 1 4.5 322.16 71.59 Wheat, soybean fertility 7 5 1,650.87 344.34 (a) 273.51.(b) Soybean fert. 3 1.5 336.26 224.17 Peren. Pnut 22 40 3,385.20 96.34 (c) Totals 45 96.7 10,619.44 1,457.71 (a) K20, N trials (b) microelement trials (c) costs of establishment (d) costs of replants Selecting Collaborators for On Farm Trials There are no prescribed means for selecting a collaborator other than membership in the clientele group and willingness on the farmer's part to make the required contributions to the research. It has been or. Swisher's responsibility to contact potential collaborators, and she has deliberately attempted to do so on a geographical basis--that is, an effort is made to distribute trials across various soil types. The county agents, feed store dealers and local farm household members have provided names of potential collaborators. Many initial collaborators were interviewed in the Sondeo.