TR A C T O R I Z A T I O N o f agriculture i n low-wage countries has been the center of one of the most virulent and emotional choice-of-techniques debate for the past 20 years. It is there-fore not surprising that, apart f r o m spawning large quantities of theoretical-conceptual literature and a massive a m o u n t of partisan writing , it has also led to a very substantial amount of careful empiric al w o r k at the micro- and macro levels. In particular, there are now available a large n u m b e r of farm-level tractor surveys from mpractically every agroclimatic zone in the I n d i a n subcontinent. How ever, many of these surveys are not easily accessible (masters andPh.D. theses) or not easily comparable. T h e main effort of this paperis to assemble the studies and present their findings in a way whichmakes t h e m comparable across agroclimatic zones. Whatever meritthis s u m m a r y may have thus goes in large part to the patient (andsometimes u n r e w a r d i n g ) effort of the many researchers w h o assembled the basic facts initially. Of course, they cannot be held responsible for mistakes or misinterpretations w h i c h m i g h t have occurred inthe summarization process.