Farmers’ innovations are developed as new or modified earlier practices by farmers themselves to overcome their existing problems using available resources and Indigenous Knowledge which are location specific, cost effective. Farmers’ innovations play a vital role in recent years, which will supplement formal research because these innovations are easy to adopt. Hence, documentation of farmers’ innovations and checking their rationality is important. The study was conducted in the year 2016-17 in seven districts of southern Karnataka. From these districts, 36 farm innovators were selected and 50 farmers’ innovations were documented. Among these innovations, 34 farmers’ innovations were found to be rational and remaining 16 were found not rational as per farmer’s opinion, whereas 22 farmers’ innovations were found to be rational and remaining 28 farmers’ innovations were found to be not rational as per opinion of scientists.

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