In 1992, no replanting was done with the transplanter due to Colorado potato beetle, however, some plants were replaced by hand at both locations to fill in for dead plants or those eaten off at both locations to keep an even plant population. As a result of crop rotation, soil structure and drainage appears to be improving at both locations. Measurements need to be taken to substantial these observations. Yields at Leamington in 1992 were the highest since the project began. The soil improving benefits of rotation appear to be gaining.
Continuous tomatoes continues to be the lowest yielding culture.
Those rotations in which tomatoes followed a legume - red clover or alfalfa and those tomatoes following incorporation of large amounts of straw showed improved growth and yield. The rye-tomato rotation was one of the lower yielding rotations in 1992. The continuous tomato culture has declining yields at Dresden and is the lowest yielding culture each year. Similar to Leamington the Soybean-Tomatoes rotation is next lowest yield rotation to continuous culture. Tomatoes have been quite response to nitrogen particularly in Leamington and under continuous tomato culture at both locations.