Abstract
The study was conducted to find the effect of different degrees of defoliation on dry weight, fruit quality, and reserve accumulation with 3-year-old Fuyu trees grown in 30-L pots. Also, the impact of defoliation on the tree growth in the following year was studied. Leaves were 0, 50, and 100% defoliated on October 1, 1999. Different degrees of defoliation did not affect dry weight of roots, old woods and shoots measured on November 10 to the level of statistical significance. However, dry weights in perennial parts tended to decrease as percent defoliation increased. The fruits from 100% defoliated trees were smaller in size, less sweet and poorly colored than those from 0 and 50% defoliated trees. As percentages of defoliation increased, nonstructural carbohydrates tended to decrease in roots, old woods and shoots. The roots of 0% defoliated trees contained greater than 1.9-fold more soluble sugars, and 2.2-fold more starch than those of 100% defoliated trees. As percent defoliation increased, new shoot growth in the following year decreased. During the period of new growth in the following year, dry weight of root decreased by 33% to 63%.
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Claims 10
Claim · model-written summary
Defoliation did not significantly affect dry weights of roots, old wood and shoots by November.
- Taxon
- Young Fuyu Persimmont0
- Treatment
- Different degrees of defoliatione0
- Outcome
- dry weight of roots, old woods and shootse0
- Direction
- did not affecte0
Not reportedComparator
Verbatim
e0“Different degrees of defoliation did not affect dry weight of roots, old woods and shoots measured on November 10 to the level of statistical significance.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Perennial-part dry weight tended to decline as defoliation increased.
Verbatim
e0“dry weights in perennial parts tended to decrease as percent defoliation increased.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Complete defoliation yielded smaller fruit than 0% and 50% defoliation.
Verbatim
e0“The fruits from 100% defoliated trees were smaller in size, less sweet and poorly colored than those from 0 and 50% defoliated trees.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Complete defoliation yielded less sweet fruit.
Verbatim
e0“The fruits from 100% defoliated trees were smaller in size, less sweet and poorly colored than those from 0 and 50% defoliated trees.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Complete defoliation yielded poorly colored fruit.
Verbatim
e0“The fruits from 100% defoliated trees were smaller in size, less sweet and poorly colored than those from 0 and 50% defoliated trees.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Nonstructural carbohydrates in roots, old wood and shoots tended to fall with greater defoliation.
Verbatim
e0“As percentages of defoliation increased, nonstructural carbohydrates tended to decrease in roots, old woods and shoots.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Undefoliated roots had more than 1.9-fold the soluble sugars of fully defoliated roots.
Verbatim
e0“The roots of 0% defoliated trees contained greater than 1.9-fold more soluble sugars, and 2.2-fold more starch than those of 100% defoliated trees.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Undefoliated roots had 2.2-fold more starch than fully defoliated roots.
Verbatim
e0“The roots of 0% defoliated trees contained greater than 1.9-fold more soluble sugars, and 2.2-fold more starch than those of 100% defoliated trees.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
New shoot growth in the following year fell as defoliation increased.
Verbatim
e0“As percent defoliation increased, new shoot growth in the following year decreased.”
t0“Young Fuyu Persimmon”
Claim · model-written summary
Root dry weight declined 33% to 63% during growth the following year.
Verbatim
e0“During the period of new growth in the following year, dry weight of root decreased by 33% to 63%.”
t0“Young Fuyu Persimmon”