POWDERY MILDEW, Erysiphe polygoni. O. S. R.: Occasional plants of farm strains have moderate resistance. P. S. R.: High resistance in Wisconsin Mildew Resistant, Wisconsin Agricultural Experiment Station. Inheritance: Unknown.

SNOW MOLD (unidentified low-temperature basidiomycete). O. S. R.: Siberian red clover (source not known). P. S. R.: Siberian Red, Alberta, Canada. Inheritance: Unknown.

SOUTHERN ANTHRACNOSE, Colletotrichum trifolii. O. S. R.: Some resistance in most of the farm strains grown where the organism is prevalent. P. S. R.: High resistance in Kenland, Kentucky Agricultural Experiment Station; in Tennessee Purple Seeded, Tennessee Agricultural Experiment Station. Some resistance in Tennessee Anthracnose Resistant, Tennessee Agricultural Experiment Station; in Kentucky 215, Kentucky. Abridged list, Sanford, Virginia; Pennscott, Pennsylvania; Stevens, Maryland; and Cumberland, composite of selected strains. Inheritance: Unknown.

SUB CLOVER POWDERY MILDEW, Erysiphe polygoni. O. S. R.: Unknown. P. S. R.: Seed originating in Australia. Inheritance: Unknown.

WHITE CLOVER CROWN ROT, Sclerotinia trifoliorum.

O. S. R.: Some resistance in some common white and Ladino stocks grown where the organism is prevalent.

P. S. R.: Moderate resistance in lines of Ladino, United States Regional Pasture Research Laboratory, Pennsylvania. Inheritance: Unknown.

WHITE SWEETCLOVER BLACK STEM, Mycosphaerella lethalis. O. S. R.: Some resistance in plant introductions from Turkey. P. S. R.: Moderate resistance in lines of breeding material, Wisconsin Agricultural Experiment Station. Inheritance: Unknown.

CROWN ROT, Sclerotinia trifoliorum. O. S. R.: Slight resistance in some seed lots that are grown where the organism is prevalent. P. S. R.: Willamette, Oregon Agricultural Experiment Station. Inheritance: Unknown.

GOOSENECK or STEM CANKER, Ascochyta caulicola. O. S. R.: Some resistance in seed lots. P. S. R.: High resistance in lines of breeding material, Wisconsin Agricultural Experiment Station. Inheritance: Polygenic.

LEAF SPOT, Cercospora davisii. O. S. R.: Some resistance in seed lot from Turkey. P. S. R.: Some resistance in lines of breeding material, Wisconsin Agricultural Experiment Station. Inheritance: Unknown.

ROOT ROT, Phytophthora cactorum. O. S. R.: Some resistance in some common seed stocks grown where the organism is prevalent. P. S. R.: Highly resistant lines in breeding material, Wisconsin Agricultural Experiment Station and Illinois Agricultural Experiment Station. Inheritance: Probably polygenic dominant.

SOUTHERN ANTHRACNOSE, Colletotrichum trifolii. O. S. R.: Some resistance in domestic seed lots. P. S. R.: High resistance in N-1, Nebraska Agricultural Experiment Station and in lines of breeding material, Wisconsin Agricultural Experiment Station. Inheritance: Unknown.

COWPEAS BACTERIAL CANKER, Xanthomonas vignicola. O. S. R.: Brabham (Iron x Whippoorwill), Buff, Iron, Six-Weeks-Ala., Suwannee, and Victor (Groit x Brabham); V. sinensis, P. E. I. Nos. 152199 from Paraguay, 167284 from Turkey, and 186456 from Nigeria; Vigna spp. P. E. I. Nos. 158831 from Paraguay, 171985 from Dominican Republic, 182025 from Liberia, 124606 from India, 181584 from Union of South Africa, and 15921 o from Union of South Africa. P. S. R.: Brabham, Buff, Iron, Suwannee, and Victor; P. E. I. Nos. 152199 from Paraguay, 167284. from Turkey, and 186456 from Nigeria; and selections from Chinese Red x Iron and Blackeye x Iron hybrids available from the Division of Plant Exploration and Introduction, United States Department of Agriculture. Inheritance: Resistance is a monogenic dominant.

FUSARIUM WILT, Fusarium oxysporum f. tracheiphilum. O. S. R.: Iron, Clay, and Virginia Blackeye. P. S. R.: Iron, Clay, Calhoun Crowder (from Clay x Large Speckled Crowder), and Calva Black-eye (from California x Virginia Black-eye) . Inheritance: Resistance is a mono-genic dominant.

POWDERY MILDEW, Erysiphe polygoni. O. S. R.: Vigna sesquipedalis (Asparagus bean, Yardlong bean). P. S. R.: Selection from Yardlong x "Azul Grande" (New Era x Sugar Crowder selection) developed at Turrialba, Costa Rica. Inheritance: Multiple factor with resistance recessive. There are conflicting reports in the literature on mode of inheritance, which suggests the possibility of distinct races of the pathogen.

ROOT KNOT, Meloidogyne sp. O. S. R.: Iron, Clay, and Crowder. P. S. R.: Iron, Clay, Crowder (from Clay x Large Speckled Crowder), and Calva Blackeye (from Calif. x Virginia Black-eye). Inheritance: Unknown.

SOUTHERN LEGUMES BLUE LUPINE (Lupinus angustifolium).

ANTHRACNOSE, Glomerella cingulaia.

O. S. R.: P. E. 1. Nos. 167938, 167943, 168529, 168535 from Portugal. P. S. R : Commercial types that are being developed. Inheritance: Unknown.

LESPEDEZA STIPULACEA POWDERY MILDEW, Microsphaera diffusa. O. S. R.: Old fields of lespedeza.

P. S. R.: Commercial variety Rowan is being released. Inheritance: Conditioned by at least two genes. One or more of these genes are linked with certain genes associated with flower color.

WINTER FIELD PEA (Pisum arvense).

ROOT ROT, Aphanomyces euteiches. O. S. R.: An imported pea from Puerto Rico. P. S. R.: Romack, a resistant variety available in limited quantities. Inheritance: Unknown.

SOYBEANS BACTERIAL BLIGHT, Pseudomonas glycinea. O. S. R.: High resistance in P. E. I. 68521 from Manchuria, P. E. I. 68554-1 from Manchuria, and P. E. I. 153213 from Belgium; moderate resistance in Hawkeye. P. S. R.: High resistance in P. E. I. 68521 from Manchuria, P. E. I. 153213 from Belgium, P. E. I. 68554-1 from Manchuria, and N48-4860 (Haberlandt x Ogden); moderate resistance in Hawkeye. Inheritance: Multiple factor.

BACTERIAL PUSTULE, Xanthomonas phaseoli var. sojensis. O. S. R.: CNS (selection from Clemson, P. E. I. 71659 from China), FC 31592. P. S. R.: Lines from hybrid populations with CNS as one parent: N46-2566, N47-309, N48-1574, N49-2560, D49772, D49-2524, D49-2477, SI-199. L9-4091, L9-4196, L9-4197. Inheritance: Resistance is a monogenic recessive.

WILDFIRE, Pseudomonas tabaci. O. S. R.: CNS (selection from Clemson, P. E. L 71659 from China) and FC 31592. P. S. R.: Lines from hybrid populations with CNS as one parent: N46-2566, N47-309, N48 I574, N492560, D49-772, D49-2524, D49-2477, S1 199, L9-4091, L9-4196, L9-4197.

Inheritance: Field resistance conditioned by resistance to bacterial pustule.

DOWNY MILDEW, Peronospora manshurica (3 physiologic races known). O. S. R.: Races I and 3 and moderate resistance to race 2: Chief, Dunfield, Manchu 3, Mukden, T 117; races unknown: Acadian and Ogden. P. S. R.: Races I and 3 and moderate resistance to race 2: Chief, Dunfield, Manchu 3, Mukden, T 117; races unknown: Acadian and Ogden. Inheritance: Resistance to each of races 1, 2, and 3 is monogenic dominant. Resistance to race 3 of Richland is conditioned by two genes.

FROGEYE, Cercospora sojina. O. S. R.: Adams, Lincoln, Anderson, Wabash, Roanoke, and FC 31592. P. S. R.: Adams, Lincoln, Anderson, Wabash, Roanoke, FC 31592, D49-772, D491633; Lincoln x (Lincoln x Richland), selections A6K 1011, A6K 1801, A76102, A7-6103, A7-6402, A7-6520, C739, C745, C764, H6150, L6-1152, L6-1503, L5-1656, L6-2132, L68179; Lincoln x (Richland x Earlyana), selections C 981, C 976; Earlyana x (Lincoln x Richland), selections C 996, C 997; Lincoln x Ogden selection C 985; Lincoln x (Lincoln x C 171) selections L8-10755 and L8 I0780. Inheritance: Resistance is a monogenic dominant.

PURPLE SEED STAIN, Cercospora kikuchii. O. S. R.: CNS. P. S. R.: N46-2566 (S 100x CNS), N49-2560 (S 100x CNS), CNS. Inheritance: Undetermined.

STEM CANKER, Diaporthe phaseolorum var. batatatis. O. S. R.: Unknown. P. S. R.: Partially resistant: 6K-1521, 8T-812, 8T-1522, 87-1605. Inheritance: Unknown.

TARGET SPOT, Corynespora cassiicola.

O. S. R.: Ogden, Palmetto, Tarheel Black. P. S. R.: Ogden, Palmetto, Tarheel Black, N47-3479, D49-772, and D49-2573. Inheritance: Undetermined.

ROOT KNOT, Meloidogyne spp. (soybeans attacked by five species). O. S. R.: Resistant to some species of nematodes: Palmetto, S100, and Laredo.

P. S. R.: Resistant to some species of nematodes: Palmetto, S100, N45-3799 (Palmetto x Ogden), N46-2566 (S 100 x CNS), N46-2652 (Volstate x Palmetto), and Laredo. Inheritance: Undetermined.

FORESTRY: American chestnut, American elm, European field elm, mimosa, white pine.

AMERICAN CHESTNUT CHESTNUT BLIGHT, Endothia parasitica. O. S. R.: Asiatic chestnut trees,particularly the Chinese chestnut and the Japanese chestnut. P. S. R.: Outstanding strains are being selected from introductions by the United States Department of Agriculture from the Orient made between 1927 and 1932. Resistant hybrids between the Asiatic chestnuts and the native American chestnuts are being developed. Chinese chestnut trees, for nut production and ornamental use, are for sale by commercial nurserymen. Inheritance: Unknown.