Abstract
The investigation was carried out during 2017and 2018 seasons on Wonderful pomegranate trees grown at private orchard located on Cairo-Alexandria Desert road about 50 Km from Cairo, Egypt. Trees planted at 3x5 meters apart in sandy soil and watered from wells using drip irrigation system. The trial was a factorial experiment, hence sustained deficit irrigation100%, 80% and 60% from crop evapotranspiration (ETc) throughout season, the occupied main plot, whereas foliar sprays of ascorbic acid treatments at 0, 500, 750 and 1000 ppm /tree located in the subplots were carried out two times, the first foliar spray was done at full bloom and the second one was performed four weeks later. The results showed that leaf characteristics (leaf area and total chlorophyll), number of fruits per tree, yield and fruit quality traits (weigh, length, diameter, weight of fruit grains, flesh percentage, weight of 100 grains and juice volume) recorded the highest values with higher both irrigation level and sprays of ascorbic acid treatments. On the contrary fruits cracked percentage and fruits sunburned percentage, peel thickness, total sugar, TSS, TSS/acidity, ascorbic acid and water used efficiency showed an adverse correlation with irrigation level. Also, spraying by ascorbic acid is reducing number of fruit cracked, number of sunburned fruits and acidity. On other hand, peel thickness, total sugar, TSS, TSS/acidity and ascorbic acid concentration were increasing. Therefore, sustained deficit irrigation is considered to be an effective strategy for arid and semi-arid regions, moreover ascorbic acid may be used to prevent or mitigate oxidative damage caused by sustained deficit irrigation.
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Claims 13
Claim · model-written summary
Higher irrigation and ascorbic acid spray levels gave the highest leaf area and chlorophyll.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- higher both irrigation level and sprays of ascorbic acid treatmentse0
- Outcome
- leaf area and total chlorophylle0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“leaf characteristics (leaf area and total chlorophyll), number of fruits per tree, yield and fruit quality traits (weigh, length, diameter, weight of fruit grains, flesh percentage, weight of 100 grains and juice volume) recorded the highest values with higher both irrigation level and sprays of ascorbic acid treatments.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Higher irrigation and ascorbic acid spray levels gave the highest fruit number and yield.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- higher both irrigation level and sprays of ascorbic acid treatmentse0
- Outcome
- number of fruits per tree, yielde0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“number of fruits per tree, yield and fruit quality traits (weigh, length, diameter, weight of fruit grains, flesh percentage, weight of 100 grains and juice volume) recorded the highest values with higher both irrigation level and sprays of ascorbic acid treatments.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Higher irrigation and ascorbic acid spray levels gave the highest fruit weight, length and diameter.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- higher both irrigation level and sprays of ascorbic acid treatmentse0
- Outcome
- weigh, length, diametere0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“fruit quality traits (weigh, length, diameter, weight of fruit grains, flesh percentage, weight of 100 grains and juice volume) recorded the highest values with higher both irrigation level and sprays of ascorbic acid treatments.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Higher irrigation and ascorbic acid spray levels gave the highest grain weight, flesh percentage and 100-grain weight.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- higher both irrigation level and sprays of ascorbic acid treatmentse0
- Outcome
- weight of fruit grains, flesh percentage, weight of 100 grainse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“weight of fruit grains, flesh percentage, weight of 100 grains and juice volume) recorded the highest values with higher both irrigation level and sprays of ascorbic acid treatments.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Higher irrigation and ascorbic acid spray levels gave the highest juice volume.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- higher both irrigation level and sprays of ascorbic acid treatmentse0
- Outcome
- juice volumee0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“juice volume) recorded the highest values with higher both irrigation level and sprays of ascorbic acid treatments.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Fruit cracking and sunburn percentages were inversely correlated with irrigation level.
Verbatim
e0“fruits cracked percentage and fruits sunburned percentage, peel thickness, total sugar, TSS, TSS/acidity, ascorbic acid and water used efficiency showed an adverse correlation with irrigation level.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Peel thickness, total sugar and TSS were inversely correlated with irrigation level.
Verbatim
e0“peel thickness, total sugar, TSS, TSS/acidity, ascorbic acid and water used efficiency showed an adverse correlation with irrigation level.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
TSS/acidity, ascorbic acid and water-use efficiency were inversely correlated with irrigation level.
Verbatim
e0“TSS/acidity, ascorbic acid and water used efficiency showed an adverse correlation with irrigation level.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Ascorbic acid spray reduced fruit cracking, sunburn and acidity.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- spraying by ascorbic acide0
- Outcome
- number of fruit cracked, number of sunburned fruits and aciditye0
- Direction
- reducinge0
Not reportedComparator
Verbatim
e0“spraying by ascorbic acid is reducing number of fruit cracked, number of sunburned fruits and acidity.”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Ascorbic acid spray increased peel thickness, total sugar and TSS.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- spraying by ascorbic acide1
- Outcome
- peel thickness, total sugar, TSSe0
- Direction
- increasinge0
Not reportedComparator
Verbatim
e0“peel thickness, total sugar, TSS, TSS/acidity and ascorbic acid concentration were increasing.”
e1“spraying by ascorbic acid”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
Ascorbic acid spray increased TSS/acidity and fruit ascorbic acid concentration.
- Taxon
- WONDERFUL POMEGRANATE TREESt0
- Treatment
- spraying by ascorbic acide1
- Outcome
- TSS/acidity and ascorbic acid concentratione0
- Direction
- increasinge0
Not reportedComparator
Verbatim
e0“TSS/acidity and ascorbic acid concentration were increasing.”
e1“spraying by ascorbic acid”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
The authors recommend sustained deficit irrigation for arid and semi-arid regions.
Verbatim
e0“sustained deficit irrigation is considered to be an effective strategy for arid and semi-arid regions”
t0“WONDERFUL POMEGRANATE TREES”
Claim · model-written summary
The authors propose ascorbic acid for mitigating oxidative damage caused by deficit irrigation.
Verbatim
e0“ascorbic acid may be used to prevent or mitigate oxidative damage caused by sustained deficit irrigation.”
t0“WONDERFUL POMEGRANATE TREES”