Abstract
The effectiveness of fosetyl‐A1 against citrus foot rot caused by Phytophthora citrophthora has been evaluated in a 25‐year‐old orchard of sweet orange cv. Tarocco, showing severe symptoms of the disease and in a 10‐year‐old orchard of the clementine‐type mandarin cv. Monreal, apparently healthy. All the trees were grafted on sour orange. In both orchards, three sprays at 200 g a.i. per 100 1 were applied in May, July and September for 3 years. The results were evaluated on the basis of yield and fruit quality. Trees of cv. Tarocco had yield increased by 25–44% whereas cv. Monreal yielded 3–16% higher than the unsprayed trees. Fruits of orange cv. Tarocco were collected from trees sprayed with fosetyl‐A1 and plunged in a water suspension of P. citrophthora. Fruits treated 11 days before inoculation showed an infection rate of 8.7%) whereas those unsprayed were 77% infected. Fruits inoculated 21 days after the treatment with fosetyl‐A1 were 32% infected whereas those unsprayed were 91%, infected. In other trials, trees of volkamer lemon were sprayed with a conidial and mycelial suspension of P. citrophthora at different times after application of fosetyl‐A1. The number of infected fruits and leaves in the unsprayed trees was very high (up to total leaf drop) and decreased sharply with the number of sprays (1 to 3).
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Claims 5
Claim · model-written summary
Tarocco yield rose 25–44% after fosetyl-A1 spraying.
- Material
- cv. Taroccoe0
- Treatment
- fosetyl‐A1t1
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 25–44%e0
- Comparator
- unsprayed treese0
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees of cv. Tarocco had yield increased by 25–44% whereas cv. Monreal yielded 3–16% higher than the unsprayed trees.”
t0“citrus foot rot”
t1“The effectiveness of fosetyl‐A1 against citrus foot rot caused by Phytophthora citrophthora has been evaluated in a 25‐year‐old orchard of sweet orange cv. Tarocco, showing severe symptoms of the disease and in a 10‐year‐old orchard of the clementine‐type mandarin cv. Monreal, apparently healthy.”
Claim · model-written summary
Monreal yield was 3–16% above unsprayed trees.
- Material
- cv. Monreale0
- Treatment
- fosetyl‐A1t1
- Outcome
- yielde0
- Direction
- highere0
- Value
- 3–16%e0
- Comparator
- unsprayed treese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees of cv. Tarocco had yield increased by 25–44% whereas cv. Monreal yielded 3–16% higher than the unsprayed trees.”
t0“citrus foot rot”
t1“The effectiveness of fosetyl‐A1 against citrus foot rot caused by Phytophthora citrophthora has been evaluated in a 25‐year‐old orchard of sweet orange cv. Tarocco, showing severe symptoms of the disease and in a 10‐year‐old orchard of the clementine‐type mandarin cv. Monreal, apparently healthy.”
Claim · model-written summary
Tarocco fruit infection was 8.7% after treatment 11 days before inoculation versus 77% without spraying.
- Material
- cv. Taroccot1
- Treatment
- treated 11 days before inoculatione0
- Outcome
- infection ratee0
- Value
- 8.7%e0
- Qualifier
- 77%e0
- Comparator
- unsprayede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits treated 11 days before inoculation showed an infection rate of 8.7%) whereas those unsprayed were 77% infected.”
t0“citrus foot rot”
t1“The effectiveness of fosetyl‐A1 against citrus foot rot caused by Phytophthora citrophthora has been evaluated in a 25‐year‐old orchard of sweet orange cv. Tarocco, showing severe symptoms of the disease and in a 10‐year‐old orchard of the clementine‐type mandarin cv. Monreal, apparently healthy.”
Claim · model-written summary
Fruit infection was 32% when inoculated 21 days after treatment, versus 91% without spraying.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits inoculated 21 days after the treatment with fosetyl‐A1 were 32% infected whereas those unsprayed were 91%, infected.”
t0“citrus foot rot”
t1“The effectiveness of fosetyl‐A1 against citrus foot rot caused by Phytophthora citrophthora has been evaluated in a 25‐year‐old orchard of sweet orange cv. Tarocco, showing severe symptoms of the disease and in a 10‐year‐old orchard of the clementine‐type mandarin cv. Monreal, apparently healthy.”
Claim · model-written summary
Infection of volkamer lemon fruit and leaves fell sharply as spray number increased.
Verbatim
e0“The number of infected fruits and leaves in the unsprayed trees was very high (up to total leaf drop) and decreased sharply with the number of sprays (1 to 3).”
t0“trees of volkamer lemon”
The same questions in other papers
inoculation · disease · CitrusPositive and negative results
10 papers in the same direction as this paper · 12 in the opposite direction
- no effect
- negative
- negative
19 papers more in this group
See all 23 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.