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Abstract
Field experiments were conducted at Clemson University in 1975, 1976, 1977, and 1978 to study the accuracy of the heat unit system in predicting maturity date of snap beans. The growing-degree day method was found to be unreliable. Indications were that other environmental factors, in addition to temperature, affected the maturity of this crop. The available soil moisture for each of 10 plantings grown under natural rainfall varied greatly. Because of the unreliability of the heat unit method, it was decided to integrate the available soil moisture parameter into the degree day method. The formula that gave the smallest coefficient of variation was one using the daily heat unit multiplied by a ratio of the available soil moisture to a constant soil moisture value. Predicting the maturity of snap beans was improved by integrating available soil moisture into the heat unit system.
Abstract
In the article “‘Carolina Cayenne’ Pepper”, by R.L. Fery, P.D. Dukes, and W.L. Ogle [HortScience 21(2):330, April 1986], the authors wish to note the following: The 13th line under Description should be changed from “…are straight to slightly curved, 0.64 cm in…” to “…are straight to slightly curved, 1.63 cm in…”.
Abstract
‘Colossus 80’ southernpea [Vigna unguiculata (L.) Walp] has been released by the U.S. Department of Agriculture and Clemson University as a replacement for ‘Colossus’, a widely adapted and popular home garden and fresh-market cultivar that was released by Clemson University in 1972 (8). ‘Colossus 80’ is highly resistant to Cercospora leaf spot (CLS), a disease incited by Cercospora cruenta Sacc. (= Mycosphaerella cruenta Latham) 5 . CLS is one of the most serious foliage diseases of southernpeas in the southeastern United States and infection of susceptible cultivars results in premature defoliation and reduced yields. The original ‘Colossus’ is highly susceptible to this disease. Fery et al. (7) reported reductions of 36, 25, 10, and 3% in total seed yield, pod number, seed number per pod, and average weight per 100 seed, respectively, in a naturally infected ‘Colossus’ planting.
Abstract
‘Carolina Cayenne’ pepper (Capsicum annuum L.) has been released by the USDA and Clemson Univ. as a replacement for ‘Carolina Hot’, a widely adapted home garden and commercial cultivar that was released by Clemson Univ. in 1954 (2). The major attribute of the new cultivar is its exceptionally high level of resistance to southern root knot, a major root disease of pepper caused by the nematode Meloidogyne incognita (Kofoid & White) Chitwood. ‘Carolina Hot’ exhibits a variable reaction to M. incognita, and results of field trials indicate that this parasite can reduce the marketable fruit yield of susceptible ‘Carolina Hot’ plants by as much as 87.5% (1).
Abstract
In the article ‘“Carolina Cayenne’ Pepper” by R.L. Fery, P.D. Duke, and W.L. Ogle (HortScience 21:330, Apr. 1986), the first 2 lines of the Description should read ‘“Carolina Cayenne’ exhibits much less variability for horticultural traits than ‘Carolina Hot’. ‘Carolina Cayenne’ has an erect plant habit, and the fruit are borne well above the soil surface.”
Abstract
Sodium azide (NaN3) applied at 134.4 kg/ha as a soil fumigant did not drastically alter the quality of vegetable root crops grown on treated soil. Azide soil treatment had no influence on quality of beets (Beta vulgaris L.) or potatoes (Solanum tuberosum L.). Differences were noted in quality of turnips (Brassica rapa L.) during 1976; however, no differences were found during the 1977 growing season at 2 locations. Azide soil treatments resulted in differences in quality of carrots (Daucus carota L.). Some differences that occurred were beneficial such as increased size and carotenoid content of carrots.