Proper stationarity assumptions (trend stationarity or difference stationarity)are important for modeling agricultural supply response in the context of time series analysis Test reults show that the assumption of trend stationarity should be a tested rather than a maintained hypothesis We...

Many analysts have claimed the record number of crop acres taken out of production in 1983 as a result of the Payment-in-Kind (PIK) program affected the already dechnmg sales offarm tractors The authors use intervention analysis, a particular form of a transfer function, to model and test for...