Abstract
The objective of this paper is to give a prospect for the conditions of market penetration of precision farming (PA) technologies in field crop farms through the comparison of Japan and US situation. This paper focuses not only on farmers' adoption of PA technologies but also on the suppliers of PA equipments since they are under different situations of PA market and infrastructure. As a result of interview surveys, some technologies are not available to Japanese farms and most available equipments are more expensive than the US price due to the market size and language interpretation cost. GPS guidance systems are cost efficient for the Japanese farms if they can reduce less than 1% of factor input and labor cost, which is likely to be low enough to adopt them.
