Abstract
Thirteen-year-old Washington navel orange (Citrus sinensis L. Osbeck) trees grown in a private citrus orchard at Wady El-Mullak region, Abo-Hamad district, Sharkia Governorate were sprayed during 2012 and 2013 seasons with calcium chloride (CaCl2) at 0.5, 1.0 and 2.0 % and water as control treatment when the fruits reached pea size (5 mm in diameter). The experimental trees were sprayed 6 times at the first and mid of May, June, October months during both seasons to investigate their influence on fruit drop and fruit retention percentages, as well as yield and fruit quality. Spraying CaCl 2 at 1.0 % gave the maximum fruit retention percentage, number of fruits and yield/ tree, but reduced June and pre-harvest fruit drop percentages. Fruits juice of trees sprayed with CaCl2 at 0.5 and 1.0 % contained the highest TSS and the lowest total acidity percentages and consequently the highest TSS/ acid ratio compared with those sprayed with 2.0 % CaCl2 and water (control). Moreover, calcium chloride spraying at 1.0 % was the optimum treatment for improving fruit quality and enhancing the yield/ tree.
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Claims 6
Claim · model-written summary
Spraying 1.0% CaCl2 gave the maximum fruit retention percentage, number of fruits and yield per tree compared with water control.
Verbatim
e0“Spraying CaCl 2 at 1.0 % gave the maximum fruit retention percentage, number of fruits and yield/ tree”
e1“Washington navel orange (Citrus sinensis L. Osbeck)”
e2“water as control treatment”
Claim · model-written summary
Spraying 1.0% CaCl2 reduced June and pre-harvest fruit drop percentages.
Verbatim
e0“Spraying CaCl 2 at 1.0 % gave the maximum fruit retention percentage, number of fruits and yield/ tree, but reduced June and pre-harvest fruit drop percentages”
e1“Washington navel orange (Citrus sinensis L. Osbeck)”
e2“water as control treatment”
Claim · model-written summary
Juice of trees sprayed with 0.5 and 1.0% CaCl2 had the highest TSS compared with 2.0% CaCl2 and water.
Verbatim
e0“Fruits juice of trees sprayed with CaCl2 at 0.5 and 1.0 % contained the highest TSS and the lowest total acidity percentages and consequently the highest TSS/ acid ratio compared with those sprayed with 2.0 % CaCl2 and water (control)”
e1“Washington navel orange (Citrus sinensis L. Osbeck)”
Claim · model-written summary
Juice of trees sprayed with 0.5 and 1.0% CaCl2 had the lowest total acidity percentage compared with 2.0% CaCl2 and water.
Verbatim
e0“Fruits juice of trees sprayed with CaCl2 at 0.5 and 1.0 % contained the highest TSS and the lowest total acidity percentages and consequently the highest TSS/ acid ratio compared with those sprayed with 2.0 % CaCl2 and water (control)”
e1“Washington navel orange (Citrus sinensis L. Osbeck)”
Claim · model-written summary
Juice of trees sprayed with 0.5 and 1.0% CaCl2 had the highest TSS/acid ratio compared with 2.0% CaCl2 and water.
Verbatim
e0“Fruits juice of trees sprayed with CaCl2 at 0.5 and 1.0 % contained the highest TSS and the lowest total acidity percentages and consequently the highest TSS/ acid ratio compared with those sprayed with 2.0 % CaCl2 and water (control)”
e1“Washington navel orange (Citrus sinensis L. Osbeck)”
Claim · model-written summary
CaCl2 spraying at 1.0% was the optimum treatment for improving fruit quality and enhancing yield per tree.
Verbatim
e0“calcium chloride spraying at 1.0 % was the optimum treatment for improving fruit quality and enhancing the yield/ tree”
e1“Washington navel orange (Citrus sinensis L. Osbeck)”
The same questions in other papers
calcium dichloride · yield · Citrus sinensis (sweet orange)Positive and negative results
1 in the opposite direction
- no effect
calcium chloride dihydrate · quality: sugar starch · Citrus sinensis (sweet orange)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.