Evaporative Cooling of Peach Trees to Delay Bloom

Chesness, J. L.; Hendershott, C. H.; Couvillon, G. A.

doi:10.13031/2013.35579

Cited by 9 publications

(6 citation statements)

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“…Approaches that can be made to achieve this include the selection of mutually suitable cultivars, the breeding of new cultivars (Kester 1965), and the use of methods such as evaporative cooling to manipulate flowering dates (Alfaro et al 1974;Anderson et al 1975;Lipe et al 1975;Chesness et al 1977). On the other hand, the breeding or chance discovery of a commerciallyyielding self-pollinating cultivar would be ideal.…”

Section: Discussionmentioning

confidence: 99%

Almond pollination studies: pollen production and viability, flower emergence and cross-pollination tests

Hill¹,

Stephenson²,

Taylor³

1985

Aust. J. Exp. Agric.

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During 1978-80, flower emergence was recorded on 12 almond cultivars (Prunus dulcis) at Angle Vale, South Australia. Early flowering cultivars showed a larger annual variation in flowering period (2-3 weeks) than late flowering cultivars (0-2 weeks). In the same period, pollen production ranged from 30 to 122 mg per 100 flowers and in vitro pollen germination ranged from 76.1 to 99.0%. Pollen production and in vitro germination differed significantly between cultivars. Hand-pollination of Nonpareil with pollen from each of eight other cultivars resulted in significantly higher nut set than with open-pollinated or self-pollinated flowers. In contrast to Nonpareil, hand-pollination of Chellaston with pollen from five other cultivars resulted in significantly higher nut set compared with self-pollinated Chellaston but not compared with open-pollinated Chellaston. The potential increase in almond yield due to improved pollination is discussed.

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Section: Discussionmentioning

confidence: 99%

Almond pollination studies: pollen production and viability, flower emergence and cross-pollination tests

Hill¹,

Stephenson²,

Taylor³

1985

Aust. J. Exp. Agric.

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“…Although the 18 day delay in apple bloom in 1976 was comparable with the delays obtained in apples in Utah , U.S .A., (Anderson et al 1975a), the 8-13 day delay in stone-fruit bloom was less than the 14 and 15 day delays rt;ported for peaches in Georgia (Chesness et al 1976) and Kentucky (Bauer et al 1976) respectively . TQis difference could have arisen because the sprinklers were not operated at night in our experiments;…”

Section: Discussionmentioning

confidence: 54%

“…In addition, in 1975, sprinklers did not operate on any block for 14 days in early September because of mechanical problems. Chesness et al (1976) showed that if peach bloom was delayed 14 days in Georgia, the probability of a damaging freeze (-4.40 to -2.2°c) at bloom decreased from greater than 5Qo/c, to 2Qo/c,. Although freeze probability data are not available for Central Otago, it is reasonable to assume that comparable bloom delays are likely to result in a similar reductionin the probability of freeze damage.…”

Section: Discussionmentioning

confidence: 99%

Water sprinkling to delay bloom in fruit trees

Hewett¹,

Young

1980

New Zealand Journal of Agricultural Research

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Overhead sprinklers were used during early spring in two seasons to apply water for evaporative cooling of apricot, peach and apple buds in Central Otago, New Zealand. Temperatures of sprinkled buds were reduced, to about that of wet-bulb temperatures. Bloom was delayed up to 10 days for apricots, 13 days for peaches, and 18 days for apples. The use of a wetness sensor (electronic leaf) to control sprinkling resulted in more efficient water use than was obtained with a fixed sequence time-clock controller. In this experiment, problems were encountered with flooding in the orchard, increased susceptibility of sprinkled apricot buds to freeze damage, and bud damage to out-of-season bloom. This technique cannot be generally recommended unless these problems can be overcome.

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“…Petal fall samples in this study were collected 7-10 days after full bloom. Lower levels of N have been reported in trees whose bloom was delayed by evaporative cooling (7,8). Bauer et al (3) observed no nutritional differences between misted and nonmisted peach trees but the samples may have been collected too late in the spring.…”

Section: Resultsmentioning

confidence: 99%

“…Although bloom of apples has been delayed 17 days in Utah (1) and 8-9 days in Ohio (24), reductions in fruit set and yield have been reported. A lack of adequate pollination and alterations in nutrient element status have been suggested as possible causes of the reduced fruit set (2,5,7,24). This study was designed to evaluate the influence of misting apple trees for bloom delay on pollination, fruit set, and nutrient levels.…”

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confidence: 99%

Effects of Overtree Misting for Bloom Delay on Pollination, Fruit Set, and Nutrient Element Concentration of ‘Golden Delicious’ Apple Tree1

Crassweller

Ferree

Stang

1981

J. Amer. Soc. Hort. Sci.

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Overtree misting for bloom delay reduced fruit set of ‘Golden Delicious’ apple (Malus domestica Borkh.) flowers hand-pollinated with ‘Jonathan’ or ‘Golden Delicious’ pollen in 1978, or open-pollinated or hand cross-pollinated with ‘Jonathan’ pollen in 1979. Misting did not affect fruit set of flowers that were open-pollinated in 1978 or self-pollinated in 1979. The number of seeds per fruit was not reduced. Soil Ca, Mg, pH and base saturation of Ca and Mg were increased, and flower and spur leaves contained lower concentrations of N, P, K, B, Mn, Fe, Zn, and Cu at either full bloom or petal fall as a result of misting. Foliar sprays of B increased B concentrations but did not influence fruit set on either misted or nonmisted trees.

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Evaporative Cooling of Peach Trees to Delay Bloom

Cited by 9 publications

References 0 publications

Almond pollination studies: pollen production and viability, flower emergence and cross-pollination tests

Almond pollination studies: pollen production and viability, flower emergence and cross-pollination tests

Water sprinkling to delay bloom in fruit trees

Effects of Overtree Misting for Bloom Delay on Pollination, Fruit Set, and Nutrient Element Concentration of ‘Golden Delicious’ Apple Tree1

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