AY 6C
PERRY SOYBEAN
December, 1951
A. H. Probst, U. S. Regional Soybean Laboratory, U.S.D.A.
G. H. Cutler, Agronomy Department, Purdue University
Perry is a new high yielding, high oil content, lodging resistant soybean variety similar in maturity to Gibson but about 5 days later than Wabash, This new variety is well adapted as a full-season variety in southwestern Indiana,
ORIGIN AND DEVELOPMENT Perry is a pureline selection made by A, H. Probst and G. H. Cutler at the Purdue Agricultural Experiment Station from a cross of the Patoka variety and strain L7-1355. The cross was made in 1939 by L. F. Williams of the U. S. Regional Soybean Laboratory, Urbana, Illinois. This variety was developed cooperatively between the Agricultural Experiment Stations-of the North Central Region and the U. S. Regional Soybean Laboratory.
DESCRIPTION Perry has medium to large-sized yellow seeds with a black-brown (imperfect black) hilum. The seed is rather similar in size, shape, and color to Patoka. The pods are medium to large in size, mainly two and three seeded, dark gray in color, and are borne primarily on the central stem. Tho plants produce a dense spreading foliage and are of medium height, determinate and usually erect in growth habit with purple flowers and gray pubescence. The plants are very similar to the Patoka parent but somewhat taller and about 3 days later in maturity.
PERFORMANCE This new variety, has been grown in comparison with several varieties in 18 tests at three locations in southwestern Indiana during the period of 1945-1951. The average results of-these tests are given in Table 1.
ADAPTATION Perry is well suited as a full-season variety for southwestern Indiana mainly south of a line drawn from Vincennes through Salem and along the northern edge of Clark county. This variety is best suited for early planting or in rotations where it is not to be followed by wheat. Because of its higher yield, Perry should replace Wabash under the growth conditions mentioned. It also should replace the S 100 variety which has averaged no higher in yield than Perry, and is 3 % lower in oil content and about 10 days later in maturity.
DISEASES Perry is moderately susceptible to frog-eye leaf spot, but not nearly as susceptible as Patoka and Gibson. Wabash has a high degree of resistance to this disease. Even under conditions of severe frog-eye leaf spot infection Perry has consistently outyielded Wabash. Perry has not been observed to be any more or less susceptible to the other soybean diseases occurring in southern Indiana than other varieties now grown in this area.
Purdue University Agricultural Experiment Station, Lafayette, Indiana
in cooperation with
U. S. Regional Soybean Laboratory, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, U. S. Department of Agriculture, Washington, D. C.
(over)