Effect of some soil herbicides on vegetative habits of almond trees of 'Nonpareil' cultivar grown in a second-year nursery field

Z. Rankova; M. Tityanov

doi:10.15547/ast.2016.03.046

Effect of some soil herbicides on vegetative habits of almond trees of 'Nonpareil' cultivar grown in a second-year nursery field

Agricultural Science and Technology ◽

10.15547/ast.2016.03.046 ◽

2016 ◽

Vol 8 (3) ◽

pp. 242-244

Author(s):

Z. Rankova ◽

M. Tityanov

Keyword(s):

Almond Trees ◽

Second Year ◽

Nursery Field

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COMPARISON OF PRUNING TECHNIQUES TO INVIGORATE LOW-VIGOR ALMOND TREES

HortScience ◽

10.21273/hortsci.27.6.619a ◽

1992 ◽

Vol 27 (6) ◽

pp. 619a-619

Author(s):

Warren Micke ◽

Mark Freeman ◽

Bob Beede ◽

Lonnie Hendricks ◽

Jim Yeager

Keyword(s):

Vegetative Growth ◽

Shoot Growth ◽

First Year ◽

Yield Losses ◽

Almond Trees ◽

Vigorous Growth ◽

Second Year ◽

Pruning Techniques ◽

Full Maturity

Some precocious almond varieties often produce little vegetative growth once they reach full maturity. A pruning trial was established using 11 year old `Harvey' trees that were healthy but making little or no new growth. The four treatments were: 1) severe heading or dehorning trees to six foot in height (first year only), 2) heading one third of the tree for three years, 3) making 20 small heading cuts all over the tree each year, and 4) normal thinning cuts (or control). All heading treatments caused more shoot growth than did the conventional thinning cuts (or control). The dehorning treatment (#1) responded with the most vigorous growth but much lower yields during the next two years compared to the control (#4). Yields were comparable between the two treatments during years three to five however. The heading treatments #2 and #3 had comparable yields with the control by the second year. They also showed more shoot growth. Tree yields from treatment #2 tended to lag below treatment #3 and the control, even though they were statistically the same. This trend may indicate that three years of moderately severe pruning is too much. Treatment #3 may be the best technique for invigorating healthy low vigor trees while minimizing yield losses, but will be the most expensive.

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