scholarly journals The effect of the intensity and method of pruning on the growth and yield of the apple variety ’Idared’ under conditions of ecological and integrated growing systems

2011 ◽  
Vol 17 (4-5) ◽  
Author(s):  
P. Dremák ◽  
I. Gonda ◽  
Z. Szabó ◽  
J. Nyéki
Keyword(s):  
Shoot Growth ◽  
Fruit Set ◽  
Factorial Experiment ◽  
Growth And Yield ◽  
First Year ◽  
Flower Initiation ◽  
Apple Trees ◽  
Apple Variety ◽  
The Third ◽  
Made In

Summary: On the Experimental Farm of the Debrecen University at Pallag, a factorial experiment has been started at springtime of 2008 on an orchard of 12 year old apple trees ’Idared’ grafts on M 26 understocks. The first factor was the growing system (integrated versus ecological), the second was the intensity of pruning (strong versus moderate thinning of the crown), whereas the third was the method of pruning (shortening versus thinning of individual shoots). Measurements have been concentrated on shoot growth, flower initiation, fruit set and accumulated yield of two successive seasons. The following conclusions are made.– In the ecological growing system, strong thinning proved to be beneficial for growth as well as for fruit bearing. – Strong thinning combined with shortening of shoots diminished yield in the first year, whereasmoderate thinning combined with shortening of shoots caused favourable growth and fruit bearing.– In the ecological growing system, the moderate shoot growth was associated with better flower initiation, which increases the chances of alternate yielding.– According to our results, the flower initiation of the ‘Idared’ was stimulated univocally by the thinning of shoots regardless of the intensity of pruning.The right choice of the intensity and method of pruning is a decisive moment of a successful yield in the ecological apple growing system

Reduced growth and yield of wheat with conservation cropping. I. Field studies in the first year of the cropping phase

1994 ◽  
Vol 45 (3) ◽  
pp. 511 ◽  
Author(s):  
JA Kirkegaard ◽  
JF Angus ◽  
PA Gardner ◽  
W Muller
Keyword(s):  
Shoot Growth ◽  
Plant Density ◽  
Root Zone ◽  
Field Studies ◽  
Growth And Yield ◽  
Rooting Depth ◽  
First Year ◽  
Mineral N ◽  
Stubble Retention ◽  
Direct Drilling

An experiment was conducted on a red earth at Harden, N.S.W., to investigate the effects of tillage and stubble management on the growth and yield of wheat in the first year of conservation cropping. Treatments involved stubble-management systems of incorporation, burning or retention combined with tillage systems of either direct drilling or minimum tillage. The experiment was conducted on an oat stubble of 3.9 t ha-1. Direct drilling and stubble retention both reduced seedling growth by 15%, compared to cultivated and stubble burnt treatments, but had no effect on plant density or tillering. The effects on shoot growth were additive and persisted until maturity, leading to grain yields which varied from 2.16 t ha-1 for the stubble-mulched, direct-drilled treatment to 3.20 t ha-1 for the burned-stubble, minimum-till treatment. Direct drilling reduced the total root length in the profile (0-160 cm) at anthesis by 40%, but there was no effect of stubble retention. Reduced shoot growth and rooting depth on direct-drilled and stubble-retained treatments reduced the recovery of water and mineral N by the crop and increased the leaching of mineral N below the root zone. Early shoot growth reductions on direct-drilled plots were not related to levels of soil water, mineral nitrogen (N) or soil temperature. Reduced shoot growth was associated with increased severity of Rhizoctonia in some direct drilled plots, but growth reductions often occurred in the absence of obvious symptoms. High soil strength (>2 MPa) in the top 10 cm of soil may have contributed to reduced growth, although the exact mechanism remains unclear. Reduced growth associated with the presence of stubble was not caused by immobilization of N or increased leaf disease, although reduced soil temperatures may have been partly responsible.

scholarly journals Growth of Three Shade Tree Genera as Influenced by Irrigation and Nitrogen Rates

1983 ◽  
Vol 1 (1) ◽  
pp. 5-6
Author(s):  
R.D. Wright ◽  
E.B. Hale
Keyword(s):  
Shoot Growth ◽  
Acer Rubrum ◽  
Tree Height ◽  
First Year ◽  
Red Maple ◽  
Trunk Diameter ◽  
The Third ◽  
Growing Seasons ◽  
N Rates ◽  
Nitrogen Rates

The influence of N rates and irrigation on shoot growth and trunk diameter were evaluated for red maple (Acer rubrum, L. ‘October Glory’), pin oak (Quercus palustris Muenchh) and dogwood (Cornus florida L. ‘Barton’). Irrigation increased shoot growth and trunk diameter for all 3 species during the first 2 growing seasons. Tree height and trunk diameter at the end of the third growing season were also greater for irrigated trees. Increasing the N levels from 168 to 329 Kg N/ha (150 to 300 lb N/A) resulted in a decrease in trunk diameter the first year and a decrease in shoot growth the second year in ‘October Glory’ maple. No significant differences in oak growth due to N rate were observed. Shoot growth and trunk diameter for dogwood were greater at 329 kg N/ha (300 lb N/A) than at 168 kg N/ha (150 lb N/A) only the first year. Neither height or trunk diameter at end of the third year were significantly increased from applying the higher level of N for any of the genera.

scholarly journals EFFECTS OF SEVERAL GROWTH CONTROLLING TECHNIQUES ON APPLE TREES

HortScience ◽  
1992 ◽  
Vol 27 (11) ◽  
pp. 1162c-1162
Author(s):  
Wesley R. Autio ◽  
Duane W. Greene
Keyword(s):  
Tree Growth ◽  
Fruit Set ◽  
Fruit Size ◽  
Root Pruning ◽  
Apple Trees ◽  
The Third ◽  
Flesh Firmness ◽  
Bitter Pit ◽  
Spray Treatment

In 1991, experiments were conducted to assess the effects of several growth controlling techniques on tree growth and fruit set, abscision, ripening, and other qualities. The first two experiments assessed the effects of root pruning (4-8 days after petal fall, 1 m from the trunk, 30 cm deep) in commercial orchards. Compared to controls, root pruning reduced fruit abscision from mature `Cortland'/M.7A trees by 70% on 17 Sept. In another orchard, root pruning reduced fruit abscision from mature `McIntosh'/MM.106 trees by 47% on 24 Sept. The third experiment utilized vigorous `Gardiner Delicious'/MM.106 trees. Treatments included root pruning (as described above), trunk scoring (single, complete circle, approximately 40 cm from the soil), trunk ringing (single, complete circle, 1 mm wide, approximately 40 cm from the soil), ethrel spray treatment (500 ppm), and dormant-pruned and unpruned controls. Treatments were applied on 15 May, when terminal growth was 12-15 cm. No treatment affected fruit set. Trunk growth was less for ringed and scored trees than other treatments. Ringing and scoring advanced ripening compared to controls, and ethrel resulted in intermediate ripening. Treatments had no effect on fruit size, flesh firmness, or the development of bitter pit and cork spot. Fruit abscision was least from controls and root-pruned trees. Trees that were treated with ethrel in May had the most rapid abscision rate.

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.

scholarly journals Response of Micropropagated Apple Trees to Field Establishment Procedures

HortScience ◽  
1991 ◽  
Vol 26 (11) ◽  
pp. 1364-1365 ◽  
Author(s):  
Richard H. Zimmerman
Keyword(s):  
Cold Storage ◽  
Vegetative Growth ◽  
Shoot Growth ◽  
Cultural Practices ◽  
Growing Season ◽  
First Year ◽  
Sectional Area ◽  
Apple Trees ◽  
Cross Sectional ◽  
Terminal Shoot

Growth, flowering, and fruiting of micropropagated `Jonathan' apple trees (Malus domestica Borkh.) transferred in Spring 1983 to the field from either a nursery, cold storage, or greenhouse were compared. First-year shoot and trunk growth was greatest for trees transplanted from the nursery and least for trees that were held in the greenhouse before being transferred to the field. Trees pruned low (35 cm) at planting time had more terminal shoot growth and less trunk cross-sectional area after the first growing season than those pruned high (90 cm). The effect of preplanting cultural practices on vegetative growth diminished in the 2nd year and disappeared by the end of the 3rd year in the orchard. Flowering began in 1985 and was only slightly affected by preplanting cultural practices and pruning treatments. Fruiting was not affected by the treatments.

scholarly journals Improve the Growth and Yield of Figs by Foliar Nutrition at Post-Harvest

2018 ◽  
Vol 8 (2) ◽  
pp. 41-51
Author(s):  
Khalid Jameel Shamkhi ◽  
Jawad Abed Al-Kadhim Kamal ◽  
Luma Salih Jabbar
Keyword(s):  
Leaf Area ◽  
Significant Interaction ◽  
Factorial Experiment ◽  
Ficus Carica ◽  
Growth And Yield ◽  
Foliar Nutrition ◽  
Post Harvest ◽  
The Third

A factorial experiment was carried out by spraying the fig (Ficus carica L.) trees cv. Aswad  Diyala at post-harvest in the 2014 and 2015 seasons, in one orchards of Diwaniyah city/ Iraq, with two liquid fertilizers: Azomin and Prosol at 3 levels (0, 3 and 6) g.l-1 and (0, 2 and 4) g.l-1, respectively. The results showed that third level of both fertilizers gave The widest leaf area:{(5.53, 6.42) and (5.52 , 6.38)}m2.tree-1, highest leaf content of chlorophyll{(131.63 ,132.55), (132.63 , 130.93)}mg.100g-1more N percent of leaf {(2.12 , 2.11) ,(2.31, 2.34)}%, highest carbohydrates percent of leaf {(14.65 , 15.10) , (14.83, 15.02)}%, for compounds and seasons, respectively. As for the crop that took place in the 2015 and 2016 seasons gave the highest yield{(20.50, 21.66) (20.80, 21.30)}kg.tree-1, most level of K in the fruit{(280.10, 272.70), (292.40, 288.10)}mg.100g-1 and highest content of anthocyanin{(512.10, 519.90), (482.90, 494.50)} mg.100g-1. There was a significant interaction between the experimental factors, which reached a peak in the third level, in the leaf area in the 2014 and 2015 seasons (5.85 and 6.86) m2.tree-1, and the anthocyanin in the 2015 and 2016 seasons in fruit (518.20 and 534.80) mg.100g-1, respectively. It can be concluded that the post-harvest spraying of Aswad Diyala cv., with the, Azomin and Prosol at the levels of 6 and 4g.l-1, respectively, gave the best results

scholarly journals Growth and Yield Improvement of Newly Planted `Honeycrisp' Apple Trees with Preplant Soil Amendments and Rootstocks

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 983C-983
Author(s):  
Renae Moran
Keyword(s):  
Untreated Control ◽  
Soil Amendments ◽  
Tree Height ◽  
Growth And Yield ◽  
Apple Trees ◽  
Yield Improvement ◽  
Yield Increase ◽  
The Third ◽  
Main Plot ◽  
First Time

Preplant soil-incorporated compost, mycorrhyzal innoculation (MI) at planting, and the combination of the two were tested for growth and yield increase of `Honeycrisp' apple trees on two rootstocks, M.26 and G.16. Compost was added at a rate of 0.51 m3 per tree. Within each main plot of compost or no compost were planted four trees with two on each rootstock. Noncompost plots were fertilized with N in year 1 and N, K, and Mg in year 4. The MI had no effect on growth until the third and fourth years after planting when annual trunk growth and tree height were greater than the untreated control. Compost increased trunk growth in the third and fourth years, but decreased growth in the fourth year when combined with MI. G.16 had greater trunk growth and tree height than M.26 in years 3 and 4. Fruiting was delayed by pruning at planting, so trees fruited for the first time in the fourth year. Bloom and yield were not increased by MI. There was more bloom and yield on G.16 than on M.26. Yield of G.16 was increased by compost from 0.08 to 1.2 kg/tree. The combination of MI and compost increased bloom compared to the control, but not yield, which was 0.3 kg/tree. Compost increased bloom but not yield of M.26, since this rootstock had low yield when planted in compost, 0.2 kg/tree, and none when planted without compost.

Orchard soil management trials. 2. Effect of herbicides and nitrogen on growth and yield of young apple trees in permanent pasture

1971 ◽  
Vol 11 (48) ◽  
pp. 105 ◽  
Author(s):  
P Baxter ◽  
BJ Newman
Keyword(s):  
Tree Growth ◽  
Fruit Set ◽  
Fruit Size ◽  
Soil Management ◽  
Growth And Yield ◽  
Apple Trees ◽  
Narrow Strip ◽  
Permanent Pasture ◽  
Orchard Soil ◽  
Young Apple

On two cultivars of young apple trees growing in a permanent pasture, a narrow strip was kept bare with herbicide sprays used either during spring and summer or during the entire year. This increased tree growth, fruit set, fruit yield, and fruit size. Using more nitrogen fertilizer did not compensate for the grass competition and did not increase growth or yield as much as did the herbicide sprays. Most of the applied nitrogen could be accounted for in the increased growth of grass. The herbicide simazine increased tree growth more than other herbicides.

The Case for General Mathematics

1922 ◽  
Vol 15 (7) ◽  
pp. 381-391
Author(s):  
William David Reeve
Keyword(s):  
High School ◽  
Scientific Data ◽  
Plane Geometry ◽  
First Year ◽  
Traditional Methods ◽  
Traditional Practice ◽  
The Third ◽  
Teaching Algebra ◽  
Second Year ◽  
Made In

I shall not attempt, in this paper, to discredit our traditional methods of teaching algebra in the first year of the high school, followed by plane geometry in the second year, intermediate algebra in the third year, and so on. I say this in spite of the fact that much of our traditional practice and the accompanying results might justify one in so doing. In short, I am not interested in a destructive type of criticism of past methods with a view to setting up new bits of content (or at least reorganized content) and technique of procedure. Certainly, I should not favor a method which would seem to be attempting to force any set program upon the teaching body. The best progress is not made in that way. With many teachers of mathematics, the traditional order of treatment, if not the traditional methods, will prevail. Moreover, this will he true even after much experience and available scientific data may make a trial of some form of reorganized content and methods seem wise and feasible.

Phytotoxicity of Herbicides to a Tifgreen Bermudagrass Green

Weed Science ◽  
1976 ◽  
Vol 24 (1) ◽  
pp. 92-98 ◽  
Author(s):  
L. M. Callahan
Keyword(s):  
Cynodon Dactylon ◽  
First Year ◽  
The Third ◽  
Calcium Arsenate ◽  
Second Year ◽  
Made In

A ‘tifgreen’ bermudagrass [Cynodon dactylon(L.) Pers.] golf-type green was treated with seven preemergence and one postemergence type herbicides at two rates each for three consecutive years to assess their phytotoxicity. A few herbicides were applied on a second, third, and fourth treatment date during the year with applications made in separate plots. Severe foliage injury occurred the first year with siduron [1-(2-methylcyclohexyl)-3-phenylurea] while moderate injury occurred with bromacil (5-bromo-3-sec-butyl-6-methyluracil) and DCPA (dimethyl tetrachloroterephthalate); and slight injury occurred with benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine), bensulide [0,0-diisopropyl phosphorodithioateS-ester withN-(2-mercaptoethyl)benzenesulfonamide], and terbutol (2,6-di-tert-butyl-p-tolyl methylcarbamate). No injury was observed with bandane (polychlorodicyclopentadiene isomers) and tri-calcium arsenate. Injury to the bermudagrass in the second year following renewal treatments was severe with siduron and bromacil; moderate with benefin, bandane, DCPA, and terbutol; and slight with bensulide and tri-calcium arsenate. Injury in the third year following repeat applications was severe with siduron, terbutol, bandane, bromacil, benefin, and DCPA; slight to moderate with bensulide, and slight with tri-calcium arsenate. Injury observed the fourth year resulting from residues was moderate with bandane; slight with terbutol, benefin, bensulide, and DCPA; and none with siduron, bromacil, and tri-calcium arsenate.

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