Crop rotation systems for soybeans

Managing Inputs for Peak Production

“…This same result from nonirrigated soybean following rice was also acheived in later work at this location (Wesley, 1999b). Where soybean was irrigated (which will be the case in a soybean/rice rotation), soybean that was cropped in a 1:1 rotation with rice produced yields and net returns that were similar to those from continuous soybean (Wesley, 1999b). Since irrigated soybean yields following rice do not appear to be enhanced by the rotation with rice, the advantages of rotating soybean with rice where both are irrigated must accrue from benefits such as enhanced rice yields and disruption of pest and weed cycles rather than a yield benefit to the soybean.…”

“…8-yr average net returns from rice--soybean rotations exceeded those from both continuous nonirrigated soybean and continuous rice. This same result from nonirrigated soybean following rice was also acheived in later work at this location (Wesley, 1999b). Where soybean was irrigated (which will be the case in a soybean/rice rotation), soybean that was cropped in a 1:1 rotation with rice produced yields and net returns that were similar to those from continuous soybean (Wesley, 1999b).…”

“…The growing of soybean rotated with wheat and other small grains within a 12-month period is referred to as doublecropping or intercropping (crops grown in sequential seasons of the same year) and are discussed later. Johnson (1987) and Wesley (1999b) have presented extensive reviews of crop rotation research. A summary and update of their presentations follow.…”

“…Studies cited by Johnson (1987) and Wesley (1999b) show that rotated soybean generally yields more than continuous soybean and that other crops benefit from rotations that include soybean. Ferreira et al (2000) measured greater 2…”