Abstract
Yield of 'Anjou' pears, Pyrus communis L, was increased with repeated annual (9-13 years) calcium chloride (CaCl2) sprays. The incidence of fruit disorders (alfalfa greening and cork spot ) was decreased by CaCl2 sprays with or without Regulaid but some minor calcium spray phytoxicity occurred on fruit and leaves. Fruit calcium concentrations in peel and cortex were increased with calcium chloride sprays; however, these sprays had little or no effect on leaf weight, fruit size, leaf Ca concentrations, tree vigor, shoot growth, fruit firmness, soluble solids, titratable acids, fruit color, fruit rots, or storage scald. This study suggested that long-term calcium chloride sprays of 60.5 g Ca per 100 liters of water or 33 to 44 kg CaCl2 per ha should provide the pear grower with a means of not only controlling fruit disorders but also for increasing 'Anjou' pear yield.
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Claims 9
Claim · model-written summary
Repeated annual calcium chloride sprays increased Anjou pear yield.
- Taxon
- Pyrus communis L
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0 - Treatment
- calcium chloride (CaCl2) sprayse0
- Outcome
- Yielde0
- Direction
- increasede0
- Qualifier
- 9-13 yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“Yield of 'Anjou' pears, Pyrus communis L, was increased with repeated annual (9-13 years) calcium chloride (CaCl2) sprays.”
Claim · model-written summary
Calcium chloride sprays decreased alfalfa greening and cork spot incidence.
- Treatment
- CaCl2 sprayse0
- Outcome
- incidence of fruit disorders (alfalfa greening and cork spot )e0
- Direction
- decreasede0
Not reportedTaxonComparator
Verbatim
e0“The incidence of fruit disorders (alfalfa greening and cork spot ) was decreased by CaCl2 sprays with or without Regulaid”
Claim · model-written summary
Calcium spraying caused minor phytotoxicity on pear fruit and leaves.
Not reportedTaxon
Verbatim
e0“some minor calcium spray phytoxicity occurred on fruit and leaves”
Claim · model-written summary
Calcium chloride sprays increased fruit calcium concentrations in peel and cortex.
- Organ / stage
- peel and cortexe0
- Treatment
- calcium chloride sprayse0
- Outcome
- Fruit calcium concentrationse0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“Fruit calcium concentrations in peel and cortex were increased with calcium chloride sprays”
Claim · model-written summary
Calcium sprays had little or no effect on leaf weight, fruit size and leaf calcium.
- Treatment
- these sprayse0
- Outcome
- leaf weight, fruit size, leaf Ca concentrationse0
- Direction
- little or no effecte0
Not reportedTaxonComparator
Verbatim
e0“these sprays had little or no effect on leaf weight, fruit size, leaf Ca concentrations”
Claim · model-written summary
Calcium sprays had little or no effect on tree vigor, shoot growth and fruit firmness.
- Treatment
- these sprayse0
- Outcome
- tree vigor, shoot growth, fruit firmnesse0
- Direction
- little or no effecte0
Not reportedTaxonComparator
Verbatim
e0“these sprays had little or no effect on leaf weight, fruit size, leaf Ca concentrations, tree vigor, shoot growth, fruit firmness”
Claim · model-written summary
Calcium sprays had little or no effect on soluble solids, titratable acids and fruit color.
- Treatment
- these sprayse0
- Outcome
- soluble solids, titratable acids, fruit colore0
- Direction
- little or no effecte0
Not reportedTaxonComparator
Verbatim
e0“these sprays had little or no effect on leaf weight, fruit size, leaf Ca concentrations, tree vigor, shoot growth, fruit firmness, soluble solids, titratable acids, fruit color”
Claim · model-written summary
Calcium sprays had little or no effect on fruit rots or storage scald.
- Outcome
- fruit rots, or storage scalde0
Not reportedTaxonTreatmentComparatorDirection
Verbatim
e0“fruit rots, or storage scald”
Claim · model-written summary
Authors recommend long-term calcium chloride sprays at stated rates to control disorders and increase yield.
- Treatment
- 60.5 g Ca per 100 liters of water or 33 to 44 kg CaCl2 per hae0
- Outcome
- controlling fruit disorders but also for increasing 'Anjou' pear yielde0
PyrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“long-term calcium chloride sprays of 60.5 g Ca per 100 liters of water or 33 to 44 kg CaCl2 per ha should provide the pear grower with a means of not only controlling fruit disorders but also for increasing 'Anjou' pear yield”
t0“Pears”
The same questions in other papers
calcium chloride dihydrate · yield · Pyrus communis (pear)Results differ
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 papers →application · yield · Pyrus communis (pear)Positive and negative results
25 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- no effect
- no effect
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See all 31 papers →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.