2020 Volume 70 Issue 2 Pages cover
On the cover
Photo shows the root morphology and plant type of the cassava variety, Rayong 1, which was selected and released by Rayong Field Crops Research Center, Department of Agriculture, Thailand in 1975. Rayong 1 has excellent agronomic traits and relatively high yield and thus, was used as a parent to breed Rayong 60 and KU50, which were later released in 1987 and 1992, respectively (This issue, p. 145–166).
(M. Ishitani: International Center for Tropical Agriculture (CIAT))