Abstract
An in-house calcium (Ca) liquid formulation named Camob consisting of a strong and stable Ca chelate to assist in Ca translocation in tomato plants was used to treat blossom-end rot (BER). Two trials were conducted to validate the effectiveness of Camob with and without Ca loading. The effects of concentration, frequency of spraying, spraying on portion of plant bearing fruits and direct spraying on fruits only were evaluated. Results showed that the Camob spray treatments with 1,000 mg/litre Ca loading increased tomato fruit yield (12%) and mean fruit number (16%) in relation to the control. However, there was no significant difference between treatments of Camob at Ca loading of 500 and 1,000 mg/litre with respect to yield, fruit number, average BER incidence and Ca in leaf. BER incidence in Camob and Camob with Ca loading treated plants was reduced significantly to less than one fruit per plant compared to more than three fruits per plant in the non treated plants in the first trial. In the second trial, BER incidence in the treated plants was mostly less than half of the control plants. Foliar application of Camob was not effective in translocating Ca to the first mature leaf at the top of the plant as the increase in the amount of Ca in the leaf was not significant. For reduction of BER incidence, Camob with 500 mg/ litre Ca loading can be sprayed directly, once a month, onto the fruit bearing portion of tomato plant one month after transplanting.
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Claims 7
Claim · model-written summary
Camob spray with 1,000 mg/litre Ca increased tomato fruit yield by 12% versus control.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Camob spray treatments with 1,000 mg/litre Ca loadinge0
- Outcome
- fruit yielde0
- Direction
- increasede0
- Value
- 12%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Camob spray treatments with 1,000 mg/litre Ca loading increased tomato fruit yield (12%) and mean fruit number (16%) in relation to the control”
Claim · model-written summary
Camob spray with 1,000 mg/litre Ca increased mean tomato fruit number by 16% versus control.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Camob spray treatments with 1,000 mg/litre Ca loadinge0
- Outcome
- mean fruit numbere0
- Direction
- increasede0
- Value
- 16%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Camob spray treatments with 1,000 mg/litre Ca loading increased tomato fruit yield (12%) and mean fruit number (16%) in relation to the control”
Claim · model-written summary
Camob at 500 and 1,000 mg/litre Ca did not differ significantly in yield, fruit number, BER incidence or leaf Ca.
- Treatment
- Camob at Ca loading of 500e0
- Outcome
- yield, fruit number, average BER incidencee0
- Direction
- no significant differencee0
- Comparator
- 1,000 mg/litree0
Not reportedTaxon
Verbatim
e0“there was no significant difference between treatments of Camob at Ca loading of 500 and 1,000 mg/litre with respect to yield, fruit number, average BER incidence and Ca in leaf”
Claim · model-written summary
Camob treatments reduced BER incidence to fewer than one fruit per plant versus more than three in untreated plants in trial one.
- Treatment
- Camob and Camob with Ca loadinge0
- Outcome
- BER incidencee0
- Direction
- reducede0
- Value
- less than one fruit per plante0
- Qualifier
- more than three fruits per plante0
- Comparator
- non treated plantse0
Not reportedTaxon
Verbatim
e0“BER incidence in Camob and Camob with Ca loading treated plants was reduced significantly to less than one fruit per plant compared to more than three fruits per plant in the non treated plants in the first trial”
Claim · model-written summary
In trial two, BER incidence in treated plants was mostly below half of control.
- Treatment
- treated plantse0
- Outcome
- BER incidencee0
- Direction
- less than halfe0
- Qualifier
- second triale0
- Comparator
- control plantse0
Not reportedTaxon
Verbatim
e0“In the second trial, BER incidence in the treated plants was mostly less than half of the control plants”
Claim · model-written summary
Foliar Camob did not significantly increase Ca in the first mature top leaf.
- Organ / stage
- first mature leafe0
- Treatment
- Foliar application of Camobe0
- Outcome
- amount of Ca in the leafe0
- Direction
- not significante0
Not reportedTaxonComparator
Verbatim
e0“Foliar application of Camob was not effective in translocating Ca to the first mature leaf at the top of the plant as the increase in the amount of Ca in the leaf was not significant”
Claim · model-written summary
The authors recommend monthly direct spraying of Camob with 500 mg/litre Ca on the fruit-bearing tomato portion starting one month after transplanting to reduce BER.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Camob with 500 mg/ litre Ca loadinge0
- Outcome
- reduction of BER incidencee0
- Qualifier
- once a monthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For reduction of BER incidence, Camob with 500 mg/ litre Ca loading can be sprayed directly, once a month, onto the fruit bearing portion of tomato plant one month after transplanting”
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