scholarly journals Effect of Planting Season and Root Removal on Shoot Growth on One-year-old Apple Trees

2014 ◽  
Vol 13 (3) ◽  
pp. 261-265
Author(s):  
Osamu Arakawa ◽  
Jianbo Xu ◽  
Takenori Asada
Keyword(s):  
Shoot Growth ◽  
Apple Trees ◽  
One Year ◽  
Planting Season

Herbicide Effects on Weed Control and Shoot Growth of Young Apple (Malus sylvestris) and Peach (Prunus persica) Trees

1994 ◽  
Vol 8 (4) ◽  
pp. 840-848 ◽  
Author(s):  
Chester L. Foy ◽  
Susan B. Harrison ◽  
Harold L. Witt
Keyword(s):  
Shoot Growth ◽  
Field Experiments ◽  
Prunus Persica ◽  
Weed Species ◽  
Apple Trees ◽  
Herbicide Treatments ◽  
One Year ◽  
Broadleaf Species ◽  
Old Trees ◽  
Peach Trees

Field experiments were conducted at two locations in Virginia to evaluate the following herbicides: alachlor, diphenamid, diuron, metolachlor, napropamide, norflurazon, oryzalin, oxyfluorfen, paraquat, pendimethalin, and simazine. One experiment involved newly-transplanted apple trees; the others, three in apple and one in peach trees, involved one-year-old trees. Treatments were applied in the spring (mid-April to early-May). Control of annual weed species was excellent with several treatments. A broader spectrum of weeds was controlled in several instances when the preemergence herbicides were used in combinations. Perennial species, particularly broadleaf species and johnsongrass, were released when annual species were suppressed by the herbicides. A rye cover crop in nontreated plots suppressed the growth of weeds. New shoot growth of newly-transplanted apple trees was increased with 3 of 20 herbicide treatments and scion circumference was increased with 11 of 20 herbicide treatments compared to the nontreated control. Growth of one-year-old apple trees was not affected. Scion circumference of one-year-old peach trees was increased with 25 of 33 herbicide treatments.

scholarly journals COMPARATIVE STUDIES ON NEWLY DEVISED AND CONVENTIONAL METHODS OF GRAFTING IN ONE-YEAR-OLD `FUJI' APPLE TREES/ M.2 /MALUS PRUN1FOLIA SEEDLINGS.

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 691b-691
Author(s):  
Yong-Koc Kim ◽  
Yong-Suk Kim
Keyword(s):  
Comparative Studies ◽  
Shoot Growth ◽  
Growing Season ◽  
Complete Healing ◽  
Apple Trees ◽  
Tree Form ◽  
Xylem Tissue ◽  
Fuji Apple ◽  
Conventional Methods ◽  
One Year

Experiments were carried out to evaluate some newly devised and conventional methods of grafting using `Fuji' apple trees on M.26/M. prunifolia rootstocks. Out of various methods of grafting, the modified inverted-veneer grafting and the inverted bark grafting showed a complete healing of the grafting union leaving no part of xylem tissue exposed in the air. However, owing to the longer period of growth for the trees grafted by the modified inverted-veneer grafting than the inverted bark grafting during the period of one growing season, the modified inverted-veneer gave slightly better shoot growth than the inverted bark grafting. It was clear that the former two methods were superior to the all other grafting methods, i.e., whip-and-tongue grafting, modified veneer grafting, inverted-veneer grafting, bark grafting, and chip budding in the grafting union healing, shoot growth, and tree form performance.

scholarly journals The Relationship between Shoot Growth and Stored Assimilates after Pruning in One-year-old Apple Trees

2008 ◽  
Vol 7 (3) ◽  
pp. 375-380
Author(s):  
Jianbo Xu ◽  
Osamu Arakawa ◽  
Takenori Asada
Keyword(s):  
Shoot Growth ◽  
Apple Trees ◽  
One Year ◽  
The Relationship

scholarly journals The effect of Regalis® (prohexadione calcium) on the reduction of fire blight (Erwinia amylovora) severity in apple trees

2004 ◽  
Vol 10 (2) ◽  
Author(s):  
P. Sobiczewski ◽  
T. Bubán
Keyword(s):  
Active Ingredient ◽  
Fire Blight ◽  
Shoot Growth ◽  
Control Strategies ◽  
Fruit Trees ◽  
Pome Fruit ◽  
Apple Trees ◽  
Obvious Effect ◽  
One Year ◽  
Prohexadione Calcium

Due to the lack of effective and non-phytotoxic materials for control of the blossom and shoot blight phase of fire blight in pome fruit trees, two novel control strategies have emerged: shoot growth retardation by bioregulators and applying resistance inducer compounds. Prohexadione calcium (ProCa) is the active ingredient of the bioregulator Regalis® registered in several European countries. The reduction of shoot growth elongation is the most obvious effect of ProCa. Furthermore, it causes significant changes in the spectrum of flavonoids and their phenolic precursors, leading to the considerable reduction of susceptibility to fire blight. In Poland, potted one-year-old apple trees of cvs. Gala Must grafted on M.26 and Sampion on M.9 (in 2001) as well as Gala Must on P.60 (in 2002) were treated with Regalis® at a range of concentration of 250, 150 or 150 + 100 ppm, respectively. The inoculation of shoots was made with the strain No.691 of E. amylovora (107 cfu/ml), on the 7th and 21st'day after treatments with Regalis. In Hungary, during the years of 2002 and 2003 one-year-old container grown apple trees of the cvs. Idared/M.9 and Freedom/M.9 were treated with the prohexadione-Ca, the active ingredient of Regalis® 100, 150 or 200 ppm, two weeks before inoculation with the Ea 1 strain of E. amylovora (107 cfu/m1). In Poland, the suppression of fire blight in shoots reached up to 80%, depending on concentration and application time of Regalis®. In Hungary, the effect of prohexadione-Ca treatments, determined by the length of necrotic lesion developed, proved to be better than that of streptomycin used for comparison.

Response of newly planted peach and apple trees to superphosphate

1975 ◽  
Vol 26 (3) ◽  
pp. 521 ◽  
Author(s):  
BK Taylor
Keyword(s):  
Tree Growth ◽  
Phosphate Fertilizer ◽  
Fruit Trees ◽  
Yield Response ◽  
Apple Trees ◽  
Leaf Analysis ◽  
Major Interest ◽  
Marked Decline ◽  
One Year ◽  
Peach Trees

The response of peach and apple trees to added superphosphate was recorded both in the nursery and later in the orchard after transplanting. The peach and apple trees responded positively to phosphate applications in both the nursery and the orchard despite the initial presence of medium to high phosphate levels in the soils. Of major interest, too, was the absence of a consistent interaction between the phosphate treatments applied in the separate years. This suggested that the trees could not accumulate enough phosphorus in any one year to influence their response to further phosphate. Leaf analysis showed two important effects in relation to the phosphate treatments. Firstly, since high rates of application of fertilizer led to only small increases in the levels of phosphorus in the leaves, tree growth rate and phosphate absorption rate are apparently closely coupled. Secondly, the deliberate withholding of phosphate fertilizer from all trees in the fourth season led to a marked decline in the levels of phosphorus in the leaves of both peach and apple, which suggested that phosphate fertilizer should be applied annually to young fruit trees. With apple, but not peach, increasing the rate of phosphate applied in the third season stimulated the number of flower buds initiated, but this effect was not simply the result of increased vegetative growth. On the other hand, phosphate application to the peach trees in the orchard resulted in a positive fruit set and yield response in the absence of any tree growth response.

THE SELENIUM UPTAKE AND ITS DISTRIBUTION IN PARTS OF ONE-YEAR OLD APPLE TREES

1998 ◽  
pp. 159-162
Author(s):  
S. Antic-Mladenovic ◽  
V. Licina ◽  
M. Jakovljevic
Keyword(s):  
Apple Trees ◽  
Selenium Uptake ◽  
One Year

scholarly journals Timing of High Temperature Influences Chilling Negation in Dormant Apple Trees

1992 ◽  
Vol 117 (2) ◽  
pp. 271-273 ◽  
Author(s):  
Eric Young
Keyword(s):  
High Temperature ◽  
Shoot Growth ◽  
Extension Growth ◽  
Apple Trees ◽  
The Third ◽  
Root And Shoot Growth ◽  
Negative Effect ◽  
Chilling Period ◽  
Positive Effect

Budbreak and root and shoot extension growth of apple trees (Malus domestics Borkh. MM.111) were affected by exposure to 500 hours of higher temperatures (15, 20, or 30C) during the first, second, or third 500 hours of a 1500-hour, 5C chilling period. Exposure to 15C during the third 500 hours had a significantly positive effect on budbreak, 20C at this time had no effect, and all other treatments had a negative effect on budbreak and new root and shoot growth.

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