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Abstract
Spur ‘Redchief’ and ‘Granspur’ and non-spur ‘Imperial Double Red Delicious’ and ‘Granny Smith’ apples (Malus domestica Borkh.) on MM 106 and MM 111 rootstocks were field-set 18 cm deeper than in the nursery row using two planting methods. Trees were dug and root systems evaluated at the end of one growing season. Planting method resulted in differential scion growth, but no differences in adventitious root development on the buried rootstock shank. Rootstock did not affect incidence of shank rooting, although the MM 111 stock had a tendency to produce more roots per rooting site. Cultivar type significantly affected shank root development, with nonspur cultivars having an increased percentage of shanks rooting and a significantly increased number of burrknots with developing roots produced on each rootstock shank.
Abstract
Ethephon applications at 250 to 1500 ppm rates during final swell of ‘Babygold-9’, a clingstone peach, accelerated maturation as measured by firmness and skin and flesh color changes and reduced titratable acidity. High rates were phytotoxic and detrimental to fruit quality. Increased immature fruit abscission appears to limit the practical use of ethephon at this growth stage in peach.
The Arkansas apple breeding program began in 1966 with objectives to develop high quality, dual purpose, adapted cultivars with a range of harvest dates and resistance to spring diseases. The program has two goals: 1) to develop red colored apples which are large, tart, firm and ripen between June and August; and, 2) develop yellow apples as a replacement for `Golden Delicious' which are large, typey, without russet and with a range of maturities from July through September. Apples with commercial potential are AA-18 (red, ripens 1-July), AA-44 (red, ripens 15-July), AA-58 (yellow, ripens 29-Aug.), AA-65 (yellow, ripens 11-Sept.) and AA-62 (yellow, ripens 15-Sept.). Data on time of bloom, harvest, fruit size, and fruit storage tests will be presented.
Abstract
An extraction, concentration, and electrophoresis method is described for water-soluble proteins from Prunus species. Protein band patterns were obtained from cambia of 1- to 2-year growth of F1 hybrid plum, its parental plum species, and peach and nectarine cultivars.
Abstract
Glyphosate at rates found adequate (3.36 kg/ha) for orchard weed control is phytotoxic and possibly fatal to young apple trees if it is intercepted by the tree’s foliage in sufficient quantities. Its use appears safe, however, if precautions are used to avoid this contact. Following foliage absorption, the glyphosate is translocated to active growing points resulting in leaf attenuation and cupping and necrosis to leaves, terminals, and trunks.
Abstract
In the Cultivar and Germplasm Release article “‘Allgold’ and ‘Goldilocks’ Peaches” by J.N. Moore, Roy C. Rom, Stanley A. Brown, and William A. Sistrunk [HortScience 19(6):891–892, 1984], the captions of Figures 2 and 3 were reversed. The selection test numbers given in the text for these cultivars (‘Allgold’ = A-142; ‘Goldilocks’ = A-15) are correct.
Abstract
‘Allgold’ and ‘Goldilocks’ are 2 new cultivars of clingstone peaches [Prunus persica (L.) Batsch.] with nonmelting flesh texture suitable for processing. Both are earlier ripening than ‘Babygold 5’ and possess good processing qualities. ‘Allgold’ is notable for its high tolerance to bacterial spot.