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  • Author or Editor: J. C. Walker x
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Abstract

Lilacs (Svringa vulgaris L. and other spp.) at 6 locations in Northeastern United States were evaluated over several years for their sensitivity or resistance to urban-generated pollutants responsible for the leaf roll-necrosis disorder. Twenty-three cultivars were classified as slightly injured, 71 were moderately injured, and 5 were severely injured. S. vulgaris cultivars were more sensitive than non-S. vulgaris and interspecific hybrids.

Open Access

Abstract

Two processing lines of bean (Phaeolus vulgaris L.), WIS. HBR 40 and WIS. HBR 72, were released in 1970. They combine, for the first time, resistance to both race 1 and race 2 of the bean halo blight disease caused by Pseudomonas phaseolicola (Burkh.) Dows.

Open Access

Two cowpea cultivars, Pinkeye Purple Hull and Royal Blackeye, were evaluated for their ability to produce a ratoon crop. Dry weight and pod yield were measured following harvest from two different cutting heights (second and fourth node), and stages of pod maturity (green and dry). The cultivar Royal Blackeye produced more green manure or returned biomass following ratooning than did Pinkeye Purple Hull. Cutting height and sampling at different pod maturities influenced ratooning potential. These results suggest that cowpea ratooning appears to be economically feasible and that further screening of cowpea cultivars for ratooning ability is warranted.

Free access