Search Results
You are looking at 11 - 13 of 13 items for
- Author or Editor: C. E. Gambrell x
Abstract
SADH, applied as postbloom sprays to 9 peach cultivars in a series of experiments from 1964 to 1969, accelerated maturation and reduced the number of pickings required for most cultivars. Although SADH did not affect the number of fruits per tree, yield, or fruit size, it advanced the maturity date of ‘Ranger’ as much as a week; that of ‘Blake’ 4 days. ‘Cardinal’, an early cultivar, was not noticeably affected by SADH applied at different stages of development. SADH caused fruit to abscise more readily from the stem and left less fruit remaining on the trees when harvested mechanically. SADH had no detrimental influence on ‘Redglobe’ peaches stored at 50°F for 3 weeks. These effects support the feasibility of using SADH as an aid in mechanically harvesting freestone peaches intended for fresh market.
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.
Abstract
Effects of 8 peach seedling rootstocks on tree growth, survival, and fruit yield of ‘Redhaven’ and ‘Loring’ peach scion cultivars were tested in Alabama, Arkansas, Georgia, North Carolina, and South Carolina. Lovell seedling rootstock was a standard for comparison. Six years of data indicated that Siberian C was not an acceptable rootstock because tree survival and fruit yield were low. Halford was equivalent to Lovell for tree growth, fruit yield, and survival. Fruit size was unaffected by rootstock. Nemaguard and 2 North Carolina selections were resistant to root-knot nematodes (Meloidogyne spp.) but they were not resistant to ring nematodes [Criconemella xenoplax (Raski) Luc and Raski]. Soil fumigation improved tree survival in nematode-infested soil.