The determination of the inheritance of chinch bug resistance in sorghums by measuring the injury to the plants has been impossible because of the frequent occurrence of hybrid vigor in the plants, which enables them to escape serious injury. Chinch bugs confined on the stems of field-grown plants of susceptible sorghum varieties by means of small celluloid cages laid more eggs than those similarly confined on resistant varieties. Egg counts thus obtained offer a method for determining the genetics of resistance to chinch bug injury and for indicating in the F1 generation which crosses offer the greatest promise in breeding for resistance. When this criterion was used to measure chinch bug resistance, the data from 11 sorghum hybrids in the F1 generation and their parents indicate that in most of the crosses resistance was dominant to susceptibility. The extent of hybrid vigor as measured by height of plant, diameter of stalk, and number of tillers did not appear to be definitely associated with chinch bug resistance as measured by oviposition and longevity of the females. In general, chinch bug females lived longer on the susceptible varieties, but the difference was small, and the duration of life is a poorer criterion for measuring chinch bug resistance than is the number of eggs laid.

The Frank Leslie Duley photograph collection consists of photographs and negatives of sorghum, corn, soil moisture, and soil structure. Many are not labeled as to place. Some are labeled with towns and cities in Nebraska including Lincoln, Dalton, Chappell, and Gurley. There is a note in the collection: "The pictures in this box were examined at this time. There are many in here that might be used for practical publications. It is hoped that they might be preserved." The note is dated December 6, 1965, and signed F.L. Duley.

Both Austrian winter peas (Pisum arvense) and common vetch (Vicia sativa) were grown with various fertilizer treatments at a number of locations on upland soils in Louisiana. The composition of the soil and the growth and chemical analysis of the green matter produced were determined. The data show that liming soils low in calcium content enabled the crops to utilize larger quantities of the phosphorus supplied by applications of superphosphate. Lime alone produced an increase in percentage content of calcium only, while lime applied with superphosphate resulted in an increased content of calcium, phosphorus, and nitrogen. Earlier data regarding the relationship between readily available soil phosphorus and crop yields are reviewed. These data further showed that those soils on which the yield of sorghum was unexplainably low in relation to the available phosphorus were also low in exchangeable calcium. It is thought that a low calcium content of soils will explain the lack of agreement between crop yields and rapid tests for phosphorus on many southern soils. These facts are of the utmost importance to an expansion in the production of feed and forage crops on the upland soils of the southern states.