THE TOLERANCE OF YOUNG APPLE TREES TO AMITROLE, DIURON AND SIMAZINE

1963 ◽  
Vol 43 (2) ◽  
pp. 113-118 ◽  
Author(s):  
W. J. Saidak ◽  
W. M. Rutherford
Keyword(s):  
Weed Control ◽  
Tree Growth ◽  
Growing Season ◽  
Apple Trees ◽  
Application Rates ◽  
Leaf Chlorosis ◽  
Annual Application ◽  
Young Apple

The growth of young apple trees was reduced by application of 24 pounds per acre of either simazine or diuron in a 2-year period. Application of 30 pounds per acre amitrole in the same period had no effect on tree growth, although some slight leaf chlorosis was observed. Adequate weed control for the growing season was obtained with a spring application of amitrole 5 pounds per acre and diuron or simazine 4 pounds per acre. Annual application rates of diuron or simazine should not exceed 6 pounds per acre, in order to avoid injury to young trees.

Orchard soil management trials. 3. Effect of soil fumigation and soil management on replanted apple trees

1977 ◽  
Vol 17 (86) ◽  
pp. 510 ◽  
Author(s):  
P Baxter
Keyword(s):  
Weed Control ◽  
Tree Growth ◽  
Soil Management ◽  
Soil Fumigation ◽  
Apple Trees ◽  
Orchard Soil ◽  
Experimental Treatments ◽  
Annual Application

Apple trees were planted into soil from which old apple trees had been removed. Experimental treatments consisted of pre-plant fumigation, annual application of fungicides to the soil and four kinds of soil management. Improved tree growth and increased yield were obtained with soil fumigation and from weed control and mulching. The economics of these operations is discussed.

Effects of Weed Control and Irrigation on the Growth of Young Pecans

1990 ◽  
Vol 4 (4) ◽  
pp. 892-894 ◽  
Author(s):  
Michael G. Patterson ◽  
Glenn Wehtje ◽  
William D. Goff
Keyword(s):  
Weed Control ◽  
Tree Growth ◽  
Chemical Control ◽  
Growing Season ◽  
Control Effect ◽  
Carya Illinoensis ◽  
Maximum Increase ◽  
Tree Diameter ◽  
The Third ◽  
Selective Chemical

The effect of irrigation and weed control by various mechanical and chemical means was evaluated over a 4-yr period on newly planted pecans [Carya illinoensis(Wang.) K. Koch]. Weed control effect on tree growth became evident in the second growing season, and became more pronounced after the third and fourth season. After the fourth season, the maximum increase in tree diameter (384%) was achieved with comprehensive, herbicide-based weed control. Mowing provided a 224% increase, which was equivalent to the untreated (229%). Disking and selective chemical control of grass weeds resulted in 339 and 292% increase, respectively. Cumulative increase in tree diameter was 316 and 271% with and without irrigation, respectively.

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.

scholarly journals The Influence of Rootstock on Characteristics of Tree Growth, Fruit Productivity and Dry Matter Production of ‘Maypole’ Young Apple Trees

2005 ◽  
Vol 4 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Yuji Inomata ◽  
Kazunori Kudo ◽  
Masato Wada ◽  
Tetsuo Masuda ◽  
Hideo Bessho ◽  
...  
Keyword(s):  
Tree Growth ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Apple Trees ◽  
Matter Production ◽  
Fruit Productivity ◽  
Young Apple

Three Year Effects of Herbaceous Weed Control in a Sycamore Plantation

Weed Science ◽  
1975 ◽  
Vol 23 (1) ◽  
pp. 32-35 ◽  
Author(s):  
C. H. Fitzgerald ◽  
R. F. Richards ◽  
C. W. Selden ◽  
J. T. May
Keyword(s):  
Weed Control ◽  
Volume Growth ◽  
Growing Season ◽  
Permanent Plots ◽  
Herbicide Application ◽  
Crop Species ◽  
Growing Seasons ◽  
Application Rates ◽  
Herbaceous Weed Control

Screening studies initiated in 1969 to determine the effectiveness and selectivity of herbicides for herbaceous weed control during the first growing season in American sycamore (Plantanus occidentalis L.) plantations indicated that simazine [2-chloro-4,6-bis(ethylamino)-s-triazine], atrazine [2-chloro-4-(ethylamino)-6- (isopropylamino)-s-triazine], and dalapon (2,2-dichloropropionic acid) had the desired properties at economically feasible use rates. To further evaluate these herbicides and ametryne [2-(ethylamino)-4-(isopropylamino)-6-(methylthio)-s-triazine], permanent plots were established in a sycamore plantation in 1970. Weed control obtained from a single herbicide application in the spring after planting seedlings in the winter has resulted in increased height, diameter, and volume growth of the sycamore for at least three growing seasons. No serious phytotoxicity on the crop species was noted with application rates from 4.5 to 9.0 kg/ha of the s-triazines alone or from 5.6 kg/ha of dalapon in combination with the lower rate of simazine and atrazine.

scholarly journals Establishment techniques for dichondra ground covers in orchards

2002 ◽  
Vol 55 ◽  
pp. 202-206
Author(s):  
K.C. Harrington ◽  
B.J. Anderson ◽  
E.A. Cameron
Keyword(s):  
Weed Control ◽  
Field Trial ◽  
Ground Cover ◽  
Lateral Spread ◽  
Apple Trees ◽  
Application Rates ◽  
Herbicide Treatments ◽  
Pot Trial ◽  
Establishment Phase

A field trial evaluated several different techniques for establishing strips of dichondra (Dichondra micrantha) under newly planted apple trees for weed control purposes Each technique involved planting a line of dichondra either side of the tree row with lateral spread of the plants eventually allowing the two strips of ground cover to merge Plugs of dichondra allowed more rapid establishment than transplanted strips of material or sown seeds However all methods gave total ground cover after 12 months In a separate pot trial several herbicide treatments suitable for controlling weeds during this establishment phase were assessed for their effects on young dichondra Herbicides that were tolerated by the dichondra included haloxyfop clopyralid tribenuron metsulfuron oxadiazon oryazalin glyphosate and propyzamide Several application rates and mixtures of some herbicides were assessed Plugs of dichondra tolerated more herbicides than young seedlings The best strategies for establishing dichondra ground covers in orchards are discussed

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