Boron Fertilization of Rice with Soil and Foliar Applications

Soil sampling and testing for B is currently not a common practice for farmers producing rice ( Oryza sativa L.) in the southeastern United States. Field research in Missouri showed that rice yields were greatest when soil B levels were 0.25 to 0.35 ppm by the hot water extraction method. In 2000, rice receiving soil‐applied B produced significantly greater yields than rice with foliar‐applied B and rice with no B applied. In 1999 and 2001, there was no significant difference between yields obtained with foliar or soil B applications.