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  • Author or Editor: R. A. Baumgardner x
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Abstract

The color of the cheek and USDA color score of processed fruit of peach (Prunus persica (L.) Batsch. cv. Redskin) were significantly higher when succinic acid-2,2-dimethyl-hydrazide (SADH) was used alone or in combination with (2-chloroethyl)phosphonic acid (ethephon). Both compounds and the combination strikingly reduced pit cavity discoloration.

Open Access

Abstract

Six sweet potato (Ipomoea batatas (L.) Lam.) lines with a wide range of objectionable fiber content were grown in one location in 1976 and in 2 locations in 1977 to study factors influencing the expression of that trait. We failed to identify environmental factors that would enhance expression of objectionable fiber but did find that large roots tended to have more objectionable fiber than did smaller roots. All roots of high fiber lines did not express objectionable amounts. About 10 US #1 but only 4 jumbo roots of each line would have to be evaluated to have a 95% probability of observing objectionable fiber in high fiber lines. However, Jumbo, US #1 and canning sizes all led to the same relative rankings of lines. Subjective evaluations of baked roots were as effective as objective laboratory tests and could be obtained concurrent with other necessary baking evaluations.

Open Access

Abstract

‘Elberta’ peach trees were given a once-over harvest to determine uniformity of fruit maturity within trees. Harvests were made at each of 3 dates to detect changes in uniformity as the crop matured. Flesh color (Hunter “a” value) and Magness-Taylor firmness were used as maturity indices for each individual fruit. Standard deviations reflecting flesh color and firmness variances among fruit on the same tree were good objective measures of uniformity of maturity. Fruit firmness and flesh color both became less uniform as the fruit matured to a certain stage, beyond which uniformity increased.

Open Access

Abstract

Application of succinic acid,2,2-dimethylhydrazide (SADH) to peaches at the onset of pit hardening advanced maturity and caused more rapid softening during ripening on the tree.

Flesh color at a given firmness was improved by SADH over a wide maturity range. The color difference was maintained after processing; canned halves from SADH trees had a higher USDA color grade than control fruit of comparable firmness.

Uniformity of firmness and flesh color among fruit within trees varied with crop maturity, but uniformity was not substantially affected by SADH. However, enhancement of flesh color by SADH improved the quality of fruit obtained by once-over harvest and tended to concentrate the grade distribution of canned halves in USDA color grades A and B.

Open Access

Abstract

The ‘Resisto’ sweet potato [Ipomoea batatas (L.)Lam.] developed jointly by the U.S. Department of Agriculture, the South Carolina Agricultural Experiment Station, and the Texas Agricultural Experiment Station, combines high yield and excellent baking and canning quality with resistances to disease and insect pests not available in present cultivars.

Open Access

Abstract

‘Regal’ sweet potato [Ipomoea batatas (L.) Lam.] was developed jointly by the USDA, the South Carolina Agricultural Experiment Station, and the Texas Agricultural Experiment Station. This cultivar has high yield and excellent baking flavor in combination with high levels of resistance to a wide array of diseases and insects.

Open Access

Abstract

‘Southern Delite’ sweet potato [Ipomoea batatas (L.) Lam.] was developed jointly by the USDA and the South Carolina Agricultural Experiment Station. This cultivar has high yield and excellent baking qualities, in combination with high levels of resistance to a wide array of disease and insect pests.

Open Access