nematode species and to powdery mildew, and has field resistance to tar spot. It is decidedly more productive than other Korean varieties on nematode-infested soils. The difference in growth bet-weep Rowan and Kobe at Beltsville, Md., is shown in figure 5.
Climax is a selection from a plant introductio1 from China. It has been evaluated in a cooperative program conducted by the State agricultural experiment stations of the lespedeza region and the U.S. Department of Agriculture. It carries some resistance to bacterial wilt of lespedeza and has field resist- to tar spot. It matures earlier than Kobe but is about 10 days later than Rowan. The approximate area to which it is adapted is shown in figure 3.
Summit lespedeza was developed by the Arkansas and Missouri Agricultural Experiment Stations in cooperation with the U.S. Department of Agriculture. It is a selection from a Climax X Harbin cross and was released for the production of foundation seed in 1962. Summit is a high-yielding variety slightly later in maturity than Korean, and is adapted to the same general area as Rowan except where the root knot nematode is a problem. It is more resistant to bacterial wilt than other varieties and is equal to Climax and Rowan in field resistance to tar spot.
Figure 3.- Approximate areas of of of Korean varieties of
lespedeza.
1P.I. 116138.
