scholarly journals Leaf Removal and Terminal Bud Size Affect the Fruiting Habits of Cranberry

HortScience ◽  
1994 ◽  
Vol 29 (9) ◽  
pp. 997-998 ◽  
Author(s):  
K.D. Patten ◽  
J. Wang
Keyword(s):  
Fruit Set ◽  
Vaccinium Macrocarpon ◽  
Leaf Removal ◽  
Fresh Weight ◽  
Flower Bud ◽  
Bud Formation ◽  
Terminal Bud ◽  
Bud Size ◽  
Flower Bud Formation

Percentage of fruiting uprights, fruit set, number of fruit per upright, and flower bud formation of `McFarlin' and `Stevens' cranberries (Vaccinium macrocarpon Ait.) were reduced by removal of old leaves, new leaves, or both on the upright. Results varied slightly, based on which leaves were removed, time of removal, cultivar, year, and bog site. Percentage of fruiting uprights, flowers and fruit per upright, and fruit set were higher on uprights with a terminal bud size >1 mm in diameter in September than for those <1 mm in diameter. Effects were cultivar and site dependent. Terminal bud size of `McFarlin' was negatively related to the subtending number of fruit and positively related to leaf fresh weight of the upright.

scholarly journals A REVIEW OF METHODS TO CONTROL VEGETATIVE GROWTH OF APPLE TREES

HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 482c-482
Author(s):  
Duane W. Greene
Keyword(s):  
Fruit Quality ◽  
Vegetative Growth ◽  
Fruit Set ◽  
Growth Control ◽  
Flower Bud ◽  
Apple Trees ◽  
Bud Formation ◽  
Control Growth ◽  
Management Techniques ◽  
Flower Bud Formation

The trend toward planting high density apple orchards continues. Closer tree spacing requires a greater degree of growth control to reduce shading and to prevent the decline in fruit quality and productivity as the planting become older. Chemical, rootstock, pruning, and management techniques will be reviewed that may control growth directly by reducing vegetative growth or indirectly through effects on increasing flower bud formation and fruit set. Pruning and management techniques will be discussed that can selectively reduce vigor in the tops of trees while allowing growth of the less vigorous lower portion of a trees to continue.

scholarly journals 659 Reducing Floral Initiation and Return Bloom in Fruit Trees— Applications and Implications in Fruit Production: Pome Fruit

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 561E-561
Author(s):  
Duane W. Greene
Keyword(s):  
Fruit Set ◽  
Fruit Size ◽  
Fruit Trees ◽  
Fruit Production ◽  
Alternative Methods ◽  
Pome Fruit ◽  
Flower Bud ◽  
Bud Formation ◽  
Biennial Bearing ◽  
Flower Bud Formation

Pome fruit display a biennial bearing tendency that is characterized by heavy flowering and fruit set one year followed by a year with reduced bloom and fruit set. This tendancy results in a year with heavy cropping with small fruit, and a subsequent year with large fruit and a small crop. Both situations are undesirable. Chemical thinners in the “on” year are frequently used to modify this cropping behavior. Alternative methods to control cropping by flower bud inhibitions will be discussed. Gibberellin application in the “off” year at or soon after bloom will inhibit flower bud formation and encourage moderate flowering. This method of crop regulation has been used infrequently. Gibberellins differ in their ability to inhibit flowering. Therefore, selection of a specific gibberellin and an effective concentration range may provide greater flexibility in controlling flowering. The cytokinins CPPU and thidiazuron inhibit flower bud formation, increase fruit size, and also thin fruit. Appropriate application of these cytokinins will be discussed where beneficial effects on fruit size may be achieved while maintaining a moderate level of flower bud formation.

scholarly journals Nutrient Accumulation and Flower Bud Formation Affected by the Time of Terminal Bud Set on Water Sprouts of Persimmon

HortScience ◽  
2011 ◽  
Vol 46 (3) ◽  
pp. 523-526 ◽  
Author(s):  
Seong-Tae Choi ◽  
Doo-Sang Park ◽  
Seong-Mo Kang
Keyword(s):  
Soluble Sugars ◽  
Tree Height ◽  
Diospyros Kaki ◽  
Flower Buds ◽  
Flower Bud ◽  
Bud Formation ◽  
Bud Set ◽  
Terminal Bud ◽  
Flower Bud Formation ◽  
Terminal Buds

Heavy pruning to lower tree height of persimmon results in excessive production of water sprouts and reduced yield. This experiment was conducted on ‘Fuyu’ (Diospyros kaki) trees to assess if the time for terminal bud set of water sprouts affected flower bud formation. Some sprouts were not pruned to serve as fruiting branches for the next season. Thirty to 40 water sprouts were tagged in 2005 and 2006, the growth of which stopped from mid-June to late August. The later terminal buds set, the lower the percent dry weight in the apical 10 cm. The apical segments of sprouts that continued to grow to mid- to late August were characterized by low soluble sugars, starch, and inorganic elements such as nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) compared with those that set terminal buds earlier. The number of flower buds from the water sprouts that set terminal buds by early August the previous year bore more than 12 flower buds the next year, whereas those that grew to mid- to late August bore fewer than three. It was concluded that water sprouts could be used as fruiting branches for the next year as long as terminal buds set by early August, thereby alleviating yield reductions that come with heavy pruning.

scholarly journals Factors influencing flower bud formation on the pear tree cultivar 'Doyenne du Comice'. I. Shoot growth and flower bud differentiation on trees sprayed with chlormequat and unsprayed ones

2013 ◽  
Vol 36 (1-2) ◽  
pp. 83-94 ◽  
Author(s):  
Franciszka Jaumień
Keyword(s):  
Shoot Growth ◽  
Apple Tree ◽  
Flower Buds ◽  
Flower Bud ◽  
Bud Formation ◽  
Pear Tree ◽  
Factors Influencing ◽  
Long Shoots ◽  
Flower Bud Differentiation ◽  
Flower Bud Formation

The growth of trees sprayed in spring with chlormequat is weaker, and their elongation growth ends 2 - 3 weeks earlier than that of unsprayed trees. Trees with growth inhibited by chlormequat set flower buds on the spurs and in the subapical part of long shoots. The course of flower bud differentiation starts in the second half of July and is similar to that in the apple tree.

scholarly journals Chemical regulation of sex expression in certain olive cultivars

2013 ◽  
Vol 35 (2) ◽  
pp. 185-190 ◽  
Author(s):  
E. S. Hegazi ◽  
G. R. Stino
Keyword(s):  
Growth Regulators ◽  
Sex Expression ◽  
Bud Burst ◽  
Flower Bud ◽  
Bud Formation ◽  
Noticeable Increase ◽  
Time Of Application ◽  
Olive Cultivars ◽  
Modifying Effect ◽  
Flower Bud Formation

The modifying effect of growth regulators on bud burst, flower bud formation and sex expression in olives varies greatly according to cultivar, concentration and time of application. Cycocel 200, 500 mg/l, ethephon 200 mg/l and SADH 2000 mg/l stimulated bud burst and flower bud formation in the 'Blanquetta' cv. A noticeable increase in the percentage of perfect flowers was obtained by 100 mg/l of kinetin, and 200 mg/l of Cycocel in the cv. 'Picual', Ethephon 200/1, Cycocel 200 mg/l and SADH 2000 mg/l considerably increased the percentage of perfect flowers in the cvs 'Blanquetta', 'Serrana' and 'Picual'. Treatments at green cluster stage were not effective.

scholarly journals Growth and Productivity of Vigorous `Northern Spy'/MM.106 Apple Trees in Response to Annually Applied Growth Control Techniques

1990 ◽  
Vol 115 (2) ◽  
pp. 212-218 ◽  
Author(s):  
D.C. Elfving ◽  
R.A. Cline
Keyword(s):  
Fruit Set ◽  
Fruit Size ◽  
Growth Control ◽  
Shoot Length ◽  
Apple Trees ◽  
Bud Formation ◽  
Control Techniques ◽  
Terminal Bud ◽  
Time Required ◽  
Growth Regulator Treatment

Beginning in 1982, daminozide (DZ) was applied annually for 5 years to whole, 5-year-old `Northern Spy'/MM.106 (Malus domestics Borkh.) trees: a) shortly after bloom, b) together with ethephon (ETH) 6 to 7 weeks after bloom, or c) after harvest. Controls were unsprayed. One-half of the trees receiving each growth regulator treatment were summer-pruned after terminal-bud formation each year. Postharvest DZ reduced shoot numbers, mean shoot length, trunk enlargement, and fruit size, but had little or no effect on bloom, fruit set, or yield. Postbloom DZ, summer DZ plus ETH, and summer-pruning reduced vegetative growth and time required for dormant-pruning, but only postbloom DZ and summer DZ plus ETH increased spur density in the tree. Postbloom DZ and summer DZ plus ETH increased both flowering and cropping in 3 of the 5 years, with little effect on fruit set. Fruit size was reduced only in years when cropping was enhanced. Total yields (1982-86) were increased 34% and 36% by postbloom DZ and summer DZ plus ETH, respectively. Summer-pruning had no effect on fruit size in any year, but reduced yields in 1984 and 1986. Year-to-year fluctuation in yield was unaffected by any treatment. Growth-control treatments had no direct effect on foliar or fruit macronutrient concentrations. Chemical names used: butanedioic acid mono (2,2-dimethylhydrazide) (daminozide); 2-chloroethylphosphonic acid (ethephon).

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