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 tested under conditions which more closely approximate those faced

 by the farmer. The government experiment station may have a location,

 soils, and climate quite different from that of the farmers. Subsistence

 farmers are sufficiently shrewd to discern whether the new variety or

 new practice seems to have had enough adaptive research and local

 testing to meet their unique local needs. If the new technology has

 not had adequate adaptation or if a small trial run on a "demonstration

 plot" reveals that it is not in fact technically viable, community

 resistance to the new technology quickly develops.

 5. Not Economically Feasible. Probably the biggest single cause

 of resistance to change is the unprofitability of the new technology

 as seen by the farmer. In many cases the new technology may be

 physically better but not necessarily economically better. A new

 technology usually requires an alteration in the input mix -- either

 in its utilization or more important in its composition. Equally

 often, the new technology requires the purchase of additional inputs

 to achieve the higher productivity -- and these inputs have a cost.

 And when the farmer compares the expected output plus its associated

 income with the additional costs of the input, the balance sheet

 employing the new technology is found wanting.

(C) The "Externalities"

 6. Not Available. Often the new technology is embedded in a

 physical item such as seed, pesticide, fertilizer, or equipment. But

 unless the new item is readily available to the farmer in quantities

 and at the time when he needs it, knowledge of its potential contri-

 bution to his agricultural production will not result in its adoption.