Abstract
The objective of this research was to determine the effects of chemical thinning with α-naphthaleneacetic acid (NAA) and nitrogen (N) fertilization, as well as their interaction in relation to fruit set and physical properties of apple cv. Golden Delicious Reinders®. Nitrogen rates used were 30 and 60 kg·ha−1 N applied at the pink bud stage. NAA for fruit thinning was applied at the rates of 10, 12 and 14 μl·l−1. Fruit set was increased by increasing the amount of N applied while the efficacy of NAA for fruit thinning was not linearly correlated to the concentration of the chemical. The total number of fruits per tree was inconsistently reduced in NAA treatments at 30 and 60 kg·ha−1 N, while total yield was reduced by thinning at 60 kg·ha−1 N, meaning that apple trees are more responsive to NAA application at higher N supply. At sufficient N supply, fruits responded more intensively to thinning with NAA by increasing their growth. Thinning with NAA caused a significant decrease in flesh firmness only in fruits from unfertilized plot.
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Claims 6
Claim · model-written summary
Increasing N increased fruit set.
- Taxon
- apple
Malus domesticat0 - Treatment
- increasing the amount of N appliede0
- Outcome
- Fruit sete0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit set was increased by increasing the amount of N applied”
t0“APPLE”
Claim · model-written summary
NAA thinning efficacy had no linear correlation with concentration.
- Taxon
- appleMalus domesticat0
- Treatment
- NAAe0
- Outcome
- efficacy of NAA for fruit thinninge0
- Qualifier
- not linearly correlatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the efficacy of NAA for fruit thinning was not linearly correlated to the concentration of the chemical.”
t0“APPLE”
Claim · model-written summary
NAA inconsistently reduced fruit number at both nitrogen rates.
- Taxon
- appleMalus domesticat0
- Treatment
- NAA treatmentse0
- Outcome
- total number of fruits per treee0
- Direction
- reducede0
- Qualifier
- inconsistentlye0
Not reportedComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total number of fruits per tree was inconsistently reduced in NAA treatments at 30 and 60 kg·ha−1 N”
t0“APPLE”
Claim · model-written summary
Thinning reduced total yield at 60 kg·ha−1 N.
- Taxon
- appleMalus domesticat0
- Treatment
- thinning at 60 kg·ha−1 Ne0
- Outcome
- total yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total yield was reduced by thinning at 60 kg·ha−1 N”
t0“APPLE”
Claim · model-written summary
At sufficient nitrogen supply, NAA thinning increased fruit growth.
- Taxon
- appleMalus domesticat0
- Treatment
- thinning with NAAe0
- Outcome
- their growthe0
- Direction
- increasinge0
- Qualifier
- At sufficient N supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At sufficient N supply, fruits responded more intensively to thinning with NAA by increasing their growth.”
t0“APPLE”
Claim · model-written summary
NAA thinning significantly decreased flesh firmness in unfertilized fruit.
- Taxon
- appleMalus domesticat0
- Treatment
- Thinning with NAAe0
- Outcome
- flesh firmnesse0
- Direction
- decreasee0
- Qualifier
- only in fruits from unfertilized plote0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thinning with NAA caused a significant decrease in flesh firmness only in fruits from unfertilized plot.”
t0“APPLE”
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