Cornell University Dept. of Fruit and Vegetable Science 164 Plant Science Bldg. However, environmental conditions, particularly precipitation, can have a severe negative impact on the timeliness and eventual success of cultivation, and can significantly increase a grower's economic risks. With longer season crops, growers must be prepared to use strategies other than or in addition to cultivation if yield reductions are to be avoided.
Timeliness is of the essence, whether with the first cultivation event or a later one.
If cultivation is missed at the appropriate time, yield reductions are almost guaranteed. Growers are best served if they have the potential to be flexible, having different types of cultivation tools for different stages of crop growth and herbicides for use on an as-needed basis. To determine the effect of weed growth stage on selectivity to flex-time implements. To investigate the potential for the photocontrol of weeds common to northeastern agricultural fields. While two cultivations could also provide adequate weed control in a mid-season crop such as snap beans, untimely precipitation can cause cultivation failure resulting in reduced yields.