scholarly journals Hydraulic resistance components of mature apple trees on rootstocks of different vigours

2007 ◽  
Vol 58 (15-16) ◽  
pp. 4213-4224 ◽  
Author(s):  
S. Cohen ◽  
A. Naor ◽  
J. Bennink ◽  
A. Grava ◽  
M. Tyree
Keyword(s):  
Hydraulic Resistance ◽  
Apple Trees ◽  
Resistance Components ◽  
Mature Apple

EFFECTS OF A ROTATION OF SIMAZINE, TERBACIL, AND DICHLOBENIL IN A MATURE APPLE ORCHARD

1981 ◽  
Vol 61 (2) ◽  
pp. 407-411 ◽  
Author(s):  
H. B. HEENEY ◽  
V. WARREN ◽  
S. U. KHAN
Keyword(s):  
Weed Control ◽  
Apple Orchard ◽  
Common Vetch ◽  
Apple Trees ◽  
Tert Butyl ◽  
Nutrient Levels ◽  
Control Growth ◽  
Vicia Cracca ◽  
Mature Apple

Annual yields of mature Kinkead Red Spy apple trees were higher when growth under trees was controlled by a rotation of three herbicides, namely, simazine (2-chloro-4, 6 bis(ethylamino)-s-triazine), terbacil (3-tert-butyl-5-chloro-6-methyluracil) and dichlobenil (2,6-dichlorobenzonitrile) compared to yields of trees in which sod was regularly mowed to control growth of weeds. While weed control with herbicide rotations was not as effective as with continuous usage of a single herbicide, it was commercially acceptable, and the problem of common vetch (Vicia cracca L.) as on escape weed, particularly with continuous simazine was largely avoided. Over the 6-yr period there was little effect on nutrient levels of the foliage. Use of a rotation of herbicides prevented the accumulation of residues in the soil and levels of all herbicides noted in year 1 of the rotation were reduced to negligible amounts 2 yr after a particular herbicide had been applied.

THE EFFECTS OF SURFACE-APPLIED CALCIUM ON SOIL AND MATURE SPARTAN APPLE TREES

1981 ◽  
Vol 61 (2) ◽  
pp. 295-302 ◽  
Author(s):  
G. H. NEILSEN ◽  
E. HOGUE ◽  
B. G. DROUGHT
Keyword(s):  
Malus Domestica ◽  
Calcium Sulfate ◽  
Surface Soil ◽  
Sandy Loam ◽  
Hydrated Lime ◽  
Apple Trees ◽  
Malus Domestica Borkh ◽  
Exchangeable Ca ◽  
Mature Apple

In 1975, hydrated lime and calcium sulfate were applied to a Rutland gravelly sandy loam under the canopy of mature apple trees (Malus domestica Borkh. ’Spartan’) on M16 at 3000, 6000, 3 × 2000 and at 3000, 6000, 3 × 4000 kg/ha, respectively, pH and exchangeable Ca, Mg and Mn were measured in the soil sampled in 1979 at 10-cm intervals to a 60-cm depth for each of the check, 6000 kg/ha Ca(OH)2 and 12 000 kg/ha gypsum treatments. The acidity of the surface soil was decreased significantly in the 6000 kg/ha Ca(OH)2 treatment. Negligible soil Ca accumulation occurred below the surface 10-cm depth for any treatment. Soil Mn was decreased from the surface to the 20-cm level in the Ca(OH)2 treatment while soil Mg was decreased from the surface to the 30-cm level in the gypsum treatment. Fruit Ca concentration at harvest, 1975–1979 was not increased by soil Ca treatments. Leaf Mg was often reduced by soil gpysum applications in excess of 3000 kg/ha. Leaf Mn reduction did not occur until the 4th and 5th yr of the experiment in the 6000 and the 3 × 2000 kg/ha Ca(OH)2 treatments.

Evaluation of plant-based water status indicators in mature apple trees under field conditions

2006 ◽  
Vol 25 (4) ◽  
pp. 351-359 ◽  
Author(s):  
Jordi Doltra ◽  
José Antonio Oncins ◽  
Joan Bonany ◽  
Moshe Cohen
Keyword(s):  
Water Status ◽  
Field Conditions ◽  
Apple Trees ◽  
Mature Apple

DISTRIBUTION OF PHYTOPHAGOUS AND PREDACIOUS MITES ON APPLE TREES IN NOVA SCOTIA

1973 ◽  
Vol 105 (2) ◽  
pp. 271-276 ◽  
Author(s):  
H. J. Herbert ◽  
K. P. Butler
Keyword(s):  
Nova Scotia ◽  
Panonychus Ulmi ◽  
Predacious Mites ◽  
Apple Trees ◽  
Predacious Mite ◽  
Phytophagous Mites ◽  
Lower Position ◽  
Zetzellia Mali ◽  
Aculus Schlechtendali ◽  
Mature Apple

AbstractThe relative densities of phytophagous and predacious mites within mature apple trees were examined. The eggs of phytophagous mites Aculus schlechtendali (Nal.) and Panonychus ulmi (Koch) were more numerous in the lower position of the tree while the reverse was true for the predacious mite Zetzellia mali (Ewing) and its eggs.

scholarly journals Photosynthesis, Shoot Growth and Fruit Quality in 'Fuji'/M.9 Mature Apple Trees in Response to Prohexadione-calcium Treatments

2014 ◽  
Vol 32 (6) ◽  
pp. 762-770 ◽  
Author(s):  
Dong-Hoon Sagong ◽  
Yang-Yik Song ◽  
Moo-Yong Park ◽  
Hun-Joong Kweon ◽  
Mok-Jong Kim ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Shoot Growth ◽  
Apple Trees ◽  
Prohexadione Calcium ◽  
Mature Apple

EFFECTS OF ANNUAL REPEAT APPLICATIONS OF SIMAZINE, DIURON, TERBACIL, AND DICHLOBENIL IN A MATURE APPLE ORCHARD

1981 ◽  
Vol 61 (2) ◽  
pp. 325-329 ◽  
Author(s):  
H. B. HEENEY ◽  
V. WARREN ◽  
S. U. KHAN
Keyword(s):  
Weed Control ◽  
Apple Orchard ◽  
Common Vetch ◽  
Apple Trees ◽  
Nitrogen Levels ◽  
Fruit Maturity ◽  
Herbicide Treatments ◽  
Continued Use ◽  
Vicia Cracca ◽  
Mature Apple

Annual tree growth and yields of mature Bancroft apple trees was higher when simazine (2-chloro-4,6 bis(ethylamino)-s-triazine), terbacil (3-tert-butyl-5-chloro-6-methyluracil) and dichlobenil (2-6-dichlorobenzonitrile) were applied annually for 6 yr to control weeds compared to trees that were regularly mowed. Fruit maturity was slightly delayed with herbicide treatment. While acceptable weed control was afforded by all herbicide treatments, repeat applications of terbacil annually gave the highest level of weed control. There was an indication after a number of years of simazine use that common vetch (Vicia cracca L.) would become a major problem. In these trials all herbicides accumulated in the 0- to 15-cm surface layer of the soil profile. Continued use of specific herbicides would have some effect on both potassium and magnesium in foliage collected in mid-July. Nitrogen levels in the leaves were not increased significantly during the study.

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