OrangerV1, PascalFrancis, Corpus, bibRecord, 000818

Calcium-spray treatments for ameliorating albedo breakdown in navel oranges

Identifieur interne : 000818 ( PascalFrancis/Corpus ); précédent : 000817; suivant : 000819

Calcium-spray treatments for ameliorating albedo breakdown in navel oranges

Auteurs : M. T. Treeby ; R. Storey

Source :

Australian journal of experimental agriculture [ 0816-1089 ] ; 2002.

RBID : Pascal:02-0437534

Descripteurs français

Pascal (Inist)
- Phytiatrie, Maladie physiologique, Traitement, Pulvérisation, Modalité traitement, Efficacité traitement, Etude expérimentale, Citrus sinensis, Calcium carbonate, Gibbérellique acide, Australie.

English descriptors

KwdEn :
- Application method, Australia, Calcium carbonate, Citrus sinensis, Experimental study, Gibberellic acid, Physiological disorder, Phytiatry, Spraying, Treatment, Treatment efficiency.

Abstract

Albedo breakdown is a rind disorder of orange fruit that results in significant economic cost to the Australian citrus industry. The effectiveness of calcium sprays as a control measure for albedo breakdown of navel orange fruit was investigated in a series of experiments in which single fruit, 1 m² quadrats of tree canopy or whole trees were treated with different calcium sprays. Repeated spraying (24x) of single Bellamy navel orange fruit throughout the season with 1% calcium solutions increased the proportion of unaffected fruit from 30 to 65-80%. Repeated applications (15×) of 1% calcium as CaCl₂ and Ca(NO₃)₂ to quadrats increased the proportion of unaffected fruit from 43 to 70-95%. The effect of anion was in the order Ca(NO₃)₂ ≥ CaCl₂ >CaCO₃. Repeated spraying (15x) of a commercial CaCl₂ formulation (Stopit) at a calcium concentration of 0.33% increased the proportion of unaffected fruit in quadrats from 17 to 47%. Generally, early and mid-season calcium sprays were equally effective and tended to be marginally better than late-season sprays. Spray-applications of calcium at a concentration of 0.33% were more effective than calcium sprays at 0.11% applied early in the season. Calcium sprays were less effective than gibberellic-acid sprays based on the number of sprays but calcium treatments did not affect rind quality characteristics such as rind colour; in contrast, gibberellic acid induced regreening of fruit. Calcium sprays (as CaCl₂) applied early in the season at 0.33% caused unacceptable fruit drop. CaCl₂ (0.33% calcium) treatment (5x) resulted in leaf chloride concentrations as high as 100 mmol/L in leaf-tissue water (0.7% on dry weight basis) - a level sufficiently high to substantially reduce photosynthesis. Ca(NO₃)₂ is the preferred calcium source in citrus because it is (i) as or more effective than CaCl₂, (ii) does not result in leaf damage and fruit drop and (iii) may provide a small controlled nitrogen supplement to leaves and fruits.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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Format Inist (serveur)

NO :	PASCAL 02-0437534 INIST
ET :	Calcium-spray treatments for ameliorating albedo breakdown in navel oranges
AU :	TREEBY (M. T.); STOREY (R.)
AF :	CSIRO Plant Industry - Horticulture Unit, Merbein Laboratory, PMB/Merbein, Vic. 3505/Australie (1 aut., 2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Australian journal of experimental agriculture; ISSN 0816-1089; Coden AJEAEL; Australie; Da. 2002; Vol. 42; No. 4; Pp. 495-502; Bibl. 32 ref.
LA :	Anglais
EA :	Albedo breakdown is a rind disorder of orange fruit that results in significant economic cost to the Australian citrus industry. The effectiveness of calcium sprays as a control measure for albedo breakdown of navel orange fruit was investigated in a series of experiments in which single fruit, 1 m² quadrats of tree canopy or whole trees were treated with different calcium sprays. Repeated spraying (24x) of single Bellamy navel orange fruit throughout the season with 1% calcium solutions increased the proportion of unaffected fruit from 30 to 65-80%. Repeated applications (15×) of 1% calcium as CaCl₂ and Ca(NO₃)₂ to quadrats increased the proportion of unaffected fruit from 43 to 70-95%. The effect of anion was in the order Ca(NO₃)₂ ≥ CaCl₂ >CaCO₃. Repeated spraying (15x) of a commercial CaCl₂ formulation (Stopit) at a calcium concentration of 0.33% increased the proportion of unaffected fruit in quadrats from 17 to 47%. Generally, early and mid-season calcium sprays were equally effective and tended to be marginally better than late-season sprays. Spray-applications of calcium at a concentration of 0.33% were more effective than calcium sprays at 0.11% applied early in the season. Calcium sprays were less effective than gibberellic-acid sprays based on the number of sprays but calcium treatments did not affect rind quality characteristics such as rind colour; in contrast, gibberellic acid induced regreening of fruit. Calcium sprays (as CaCl₂) applied early in the season at 0.33% caused unacceptable fruit drop. CaCl₂ (0.33% calcium) treatment (5x) resulted in leaf chloride concentrations as high as 100 mmol/L in leaf-tissue water (0.7% on dry weight basis) - a level sufficiently high to substantially reduce photosynthesis. Ca(NO₃)₂ is the preferred calcium source in citrus because it is (i) as or more effective than CaCl₂, (ii) does not result in leaf damage and fruit drop and (iii) may provide a small controlled nitrogen supplement to leaves and fruits.
CC :	002A34K
FD :	Phytiatrie; Maladie physiologique; Traitement; Pulvérisation; Modalité traitement; Efficacité traitement; Etude expérimentale; Citrus sinensis; Calcium carbonate; Gibbérellique acide; Australie
FG :	Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Océanie; Agrume; Plante fruitière; Gibbérelline; Substance croissance végétal
ED :	Phytiatry; Physiological disorder; Treatment; Spraying; Application method; Treatment efficiency; Experimental study; Citrus sinensis; Calcium carbonate; Gibberellic acid; Australia
EG :	Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Oceania; Citrus fruit; Fruit crop; Gibberellin; Plant growth substance
SD :	Fitiatria; Enfermedad fisiológica; Tratamiento; Pulverización; Modalidad tratamiento; Eficacia tratamiento; Estudio experimental; Citrus sinensis; Calcio carbonato; Giberelico ácido; Australia
LO :	INIST-9979.354000108793940120
ID :	02-0437534

Links to Exploration step

Pascal:02-0437534

Le document en format XML

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<front><div type="abstract" xml:lang="en">Albedo breakdown is a rind disorder of orange fruit that results in significant economic cost to the Australian citrus industry. The effectiveness of calcium sprays as a control measure for albedo breakdown of navel orange fruit was investigated in a series of experiments in which single fruit, 1 m<sup>2</sup>
 quadrats of tree canopy or whole trees were treated with different calcium sprays. Repeated spraying (24x) of single Bellamy navel orange fruit throughout the season with 1% calcium solutions increased the proportion of unaffected fruit from 30 to 65-80%. Repeated applications (15×) of 1% calcium as CaCl<sub>2</sub>
 and Ca(NO<sub>3</sub>
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 to quadrats increased the proportion of unaffected fruit from 43 to 70-95%. The effect of anion was in the order Ca(NO<sub>3</sub>
)<sub>2</sub>
 ≥ CaCl<sub>2</sub>
 >CaCO<sub>3</sub>
. Repeated spraying (15x) of a commercial CaCl<sub>2</sub>
 formulation (Stopit) at a calcium concentration of 0.33% increased the proportion of unaffected fruit in quadrats from 17 to 47%. Generally, early and mid-season calcium sprays were equally effective and tended to be marginally better than late-season sprays. Spray-applications of calcium at a concentration of 0.33% were more effective than calcium sprays at 0.11% applied early in the season. Calcium sprays were less effective than gibberellic-acid sprays based on the number of sprays but calcium treatments did not affect rind quality characteristics such as rind colour; in contrast, gibberellic acid induced regreening of fruit. Calcium sprays (as CaCl<sub>2</sub>
) applied early in the season at 0.33% caused unacceptable fruit drop. CaCl<sub>2</sub>
 (0.33% calcium) treatment (5x) resulted in leaf chloride concentrations as high as 100 mmol/L in leaf-tissue water (0.7% on dry weight basis) - a level sufficiently high to substantially reduce photosynthesis. Ca(NO<sub>3</sub>
)<sub>2</sub>
 is the preferred calcium source in citrus because it is (i) as or more effective than CaCl<sub>2</sub>
, (ii) does not result in leaf damage and fruit drop and (iii) may provide a small controlled nitrogen supplement to leaves and fruits.</div>
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<fC01 i1="01" l="ENG"><s0>Albedo breakdown is a rind disorder of orange fruit that results in significant economic cost to the Australian citrus industry. The effectiveness of calcium sprays as a control measure for albedo breakdown of navel orange fruit was investigated in a series of experiments in which single fruit, 1 m<sup>2</sup>
 quadrats of tree canopy or whole trees were treated with different calcium sprays. Repeated spraying (24x) of single Bellamy navel orange fruit throughout the season with 1% calcium solutions increased the proportion of unaffected fruit from 30 to 65-80%. Repeated applications (15×) of 1% calcium as CaCl<sub>2</sub>
 and Ca(NO<sub>3</sub>
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. Repeated spraying (15x) of a commercial CaCl<sub>2</sub>
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 (0.33% calcium) treatment (5x) resulted in leaf chloride concentrations as high as 100 mmol/L in leaf-tissue water (0.7% on dry weight basis) - a level sufficiently high to substantially reduce photosynthesis. Ca(NO<sub>3</sub>
)<sub>2</sub>
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<fC03 i1="03" i2="X" l="FRE"><s0>Traitement</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Treatment</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Tratamiento</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Pulvérisation</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Spraying</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Pulverización</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Modalité traitement</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Application method</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Modalidad tratamiento</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Efficacité traitement</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Treatment efficiency</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Eficacia tratamiento</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Etude expérimentale</s0>
<s5>09</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Experimental study</s0>
<s5>09</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Estudio experimental</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Citrus sinensis</s0>
<s2>NS</s2>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Calcium carbonate</s0>
<s5>15</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Calcium carbonate</s0>
<s5>15</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Calcio carbonato</s0>
<s5>15</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Gibbérellique acide</s0>
<s2>NK</s2>
<s2>FR</s2>
<s2>FF</s2>
<s5>16</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Gibberellic acid</s0>
<s2>NK</s2>
<s2>FR</s2>
<s2>FF</s2>
<s5>16</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Giberelico ácido</s0>
<s2>NK</s2>
<s2>FR</s2>
<s2>FF</s2>
<s5>16</s5>
</fC03>
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<s2>NG</s2>
<s5>20</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Australia</s0>
<s2>NG</s2>
<s5>20</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Australia</s0>
<s2>NG</s2>
<s5>20</s5>
</fC03>
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<s2>NS</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Rutaceae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Rutaceae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="04" i2="X" l="FRE"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="04" i2="X" l="SPA"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="05" i2="X" l="FRE"><s0>Océanie</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="05" i2="X" l="ENG"><s0>Oceania</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="05" i2="X" l="SPA"><s0>Oceania</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="06" i2="X" l="FRE"><s0>Agrume</s0>
<s5>39</s5>
</fC07>
<fC07 i1="06" i2="X" l="ENG"><s0>Citrus fruit</s0>
<s5>39</s5>
</fC07>
<fC07 i1="06" i2="X" l="SPA"><s0>Agrios</s0>
<s5>39</s5>
</fC07>
<fC07 i1="07" i2="X" l="FRE"><s0>Plante fruitière</s0>
<s5>47</s5>
</fC07>
<fC07 i1="07" i2="X" l="ENG"><s0>Fruit crop</s0>
<s5>47</s5>
</fC07>
<fC07 i1="07" i2="X" l="SPA"><s0>Planta frutal</s0>
<s5>47</s5>
</fC07>
<fC07 i1="08" i2="X" l="FRE"><s0>Gibbérelline</s0>
<s2>FF</s2>
<s5>52</s5>
</fC07>
<fC07 i1="08" i2="X" l="ENG"><s0>Gibberellin</s0>
<s2>FF</s2>
<s5>52</s5>
</fC07>
<fC07 i1="08" i2="X" l="SPA"><s0>Giberelina</s0>
<s2>FF</s2>
<s5>52</s5>
</fC07>
<fC07 i1="09" i2="X" l="FRE"><s0>Substance croissance végétal</s0>
<s5>53</s5>
</fC07>
<fC07 i1="09" i2="X" l="ENG"><s0>Plant growth substance</s0>
<s5>53</s5>
</fC07>
<fC07 i1="09" i2="X" l="SPA"><s0>Substancia crecimiento vegetal</s0>
<s5>53</s5>
</fC07>
<fN21><s1>252</s1>
</fN21>
<fN82><s1>PSI</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 02-0437534 INIST</NO>
<ET>Calcium-spray treatments for ameliorating albedo breakdown in navel oranges</ET>
<AU>TREEBY (M. T.); STOREY (R.)</AU>
<AF>CSIRO Plant Industry - Horticulture Unit, Merbein Laboratory, PMB/Merbein, Vic. 3505/Australie (1 aut., 2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Australian journal of experimental agriculture; ISSN 0816-1089; Coden AJEAEL; Australie; Da. 2002; Vol. 42; No. 4; Pp. 495-502; Bibl. 32 ref.</SO>
<LA>Anglais</LA>
<EA>Albedo breakdown is a rind disorder of orange fruit that results in significant economic cost to the Australian citrus industry. The effectiveness of calcium sprays as a control measure for albedo breakdown of navel orange fruit was investigated in a series of experiments in which single fruit, 1 m<sup>2</sup>
 quadrats of tree canopy or whole trees were treated with different calcium sprays. Repeated spraying (24x) of single Bellamy navel orange fruit throughout the season with 1% calcium solutions increased the proportion of unaffected fruit from 30 to 65-80%. Repeated applications (15×) of 1% calcium as CaCl<sub>2</sub>
 and Ca(NO<sub>3</sub>
)<sub>2</sub>
 to quadrats increased the proportion of unaffected fruit from 43 to 70-95%. The effect of anion was in the order Ca(NO<sub>3</sub>
)<sub>2</sub>
 ≥ CaCl<sub>2</sub>
 >CaCO<sub>3</sub>
. Repeated spraying (15x) of a commercial CaCl<sub>2</sub>
 formulation (Stopit) at a calcium concentration of 0.33% increased the proportion of unaffected fruit in quadrats from 17 to 47%. Generally, early and mid-season calcium sprays were equally effective and tended to be marginally better than late-season sprays. Spray-applications of calcium at a concentration of 0.33% were more effective than calcium sprays at 0.11% applied early in the season. Calcium sprays were less effective than gibberellic-acid sprays based on the number of sprays but calcium treatments did not affect rind quality characteristics such as rind colour; in contrast, gibberellic acid induced regreening of fruit. Calcium sprays (as CaCl<sub>2</sub>
) applied early in the season at 0.33% caused unacceptable fruit drop. CaCl<sub>2</sub>
 (0.33% calcium) treatment (5x) resulted in leaf chloride concentrations as high as 100 mmol/L in leaf-tissue water (0.7% on dry weight basis) - a level sufficiently high to substantially reduce photosynthesis. Ca(NO<sub>3</sub>
)<sub>2</sub>
 is the preferred calcium source in citrus because it is (i) as or more effective than CaCl<sub>2</sub>
, (ii) does not result in leaf damage and fruit drop and (iii) may provide a small controlled nitrogen supplement to leaves and fruits.</EA>
<CC>002A34K</CC>
<FD>Phytiatrie; Maladie physiologique; Traitement; Pulvérisation; Modalité traitement; Efficacité traitement; Etude expérimentale; Citrus sinensis; Calcium carbonate; Gibbérellique acide; Australie</FD>
<FG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Océanie; Agrume; Plante fruitière; Gibbérelline; Substance croissance végétal</FG>
<ED>Phytiatry; Physiological disorder; Treatment; Spraying; Application method; Treatment efficiency; Experimental study; Citrus sinensis; Calcium carbonate; Gibberellic acid; Australia</ED>
<EG>Rutaceae; Dicotyledones; Angiospermae; Spermatophyta; Oceania; Citrus fruit; Fruit crop; Gibberellin; Plant growth substance</EG>
<SD>Fitiatria; Enfermedad fisiológica; Tratamiento; Pulverización; Modalidad tratamiento; Eficacia tratamiento; Estudio experimental; Citrus sinensis; Calcio carbonato; Giberelico ácido; Australia</SD>
<LO>INIST-9979.354000108793940120</LO>
<ID>02-0437534</ID>
</server>
</inist>
</record>

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Calcium-spray treatments for ameliorating albedo breakdown in navel oranges

Calcium-spray treatments for ameliorating albedo breakdown in navel oranges

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