Abstract
A fairly large number of grafted mango seedlings, kept under partial shade in the Fortuna Substation, were damaged by a serious die-back disease which caused death of the scions and necrosis of the wounded tissues of the root-stocks. In the orchard, trees of the susceptible variety Jacqueline developed very serious die-back symptoms and stem cankers. The disease was prevalent during December 1965 and January 1966. The high percentage of natural infection can be attributed to the wide-spread occurrence of the parasite, Physalospora rhodina. The imperfect stage of the organism, Diplodia, is endemic in the Island, and was repeatedly isolated from the following hosts: avocado, orchids, pigeon peas, papaya, alfalfa, mango, and sugarcane. Six distinct physiologic races were recognized when using the aversion test. The perfect Physalospora form was produced when the physiologic races were cultured independently on caimito fruits or in young papaya stems and petioles. This organism is a wound parasite and capable of causing great damage under certain favorable conditions, as when grafted mango trees are kept in a humid propagation shed. In the nursery the disease was controlled by practicing such preventive methods as: Selection of scions from healthy trees, sterilization of the budding knife with alcohol, keeping the grafted trees in a relatively dry environment, and gradual exposure of grafted mangos in plant beds to full sunlight. In the orchard, control was attained by spraying the mango trees periodically with copper oxichloride sulphate (3 lbs./100 gal.) and by paintings of the stems frequently with a thick paste of the above mentioned fungicide.
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Claims 6
Claim · model-written summary
Grafted mango seedlings sustained die-back, scion death, and rootstock necrosis.
- Taxon
- mango
_from_India.jpg?width=60)
Mangifera indicae0 - Organ / stage
- seedlingse0
- Outcome
- death of the scions and necrosis of the wounded tissues of the root-stockse0
- Setting
- Fortuna Substatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“grafted mango seedlings, kept under partial shade in the Fortuna Substation, were damaged by a serious die-back disease which caused death of the scions and necrosis of the wounded tissues of the root-stocks”
Claim · model-written summary
Jacqueline orchard trees developed serious die-back and stem cankers.
Verbatim
e0“In the orchard, trees of the susceptible variety Jacqueline developed very serious die-back symptoms and stem cankers”
Claim · model-written summary
The parasite was isolated from seven named plant hosts.
Verbatim
e0“was repeatedly isolated from the following hosts: avocado, orchids, pigeon peas, papaya, alfalfa, mango, and sugarcane”
Claim · model-written summary
Six physiologic races were recognized by the aversion test.
- Taxon
- MangoMangifera indicat0
- Interactor
- Physalospora rhodina
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=60)
Lasiodiplodia theobromaet0pathogen - Outcome
- physiologic racese0
- Value
- Sixe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=500)
Verbatim
t0“Mango (Mangifera indica L.) Caused by Physalospora rhodina”
e0“Six distinct physiologic races were recognized when using the aversion test”
Claim · model-written summary
Nursery preventive methods controlled the mango disease.
- Taxon
- mangosMangifera indicae0
- Treatment
- preventive methodse0
- Outcome
- diseasee0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the nursery the disease was controlled by practicing such preventive methods as: Selection of scions from healthy trees, sterilization of the budding knife with alcohol, keeping the grafted trees in a relatively dry environment, and gradual exposure of grafted mangos in plant beds to full sunlight”
Claim · model-written summary
Copper oxichloride sulphate sprays and stem paste controlled the orchard disease.
- Taxon
- mangoMangifera indicae0
- Treatment
- spraying the mango trees periodically with copper oxichloride sulphate (3 lbs./100 gal.)e0
- Outcome
- controle0
- Direction
- controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the orchard, control was attained by spraying the mango trees periodically with copper oxichloride sulphate (3 lbs./100 gal.) and by paintings of the stems frequently with a thick paste of the above mentioned fungicide”
The same questions in other papers
copper atom · control · Mangifera indica (mango)Results agree
1 paper in the same direction as this paper
- positive
application · control · Mangifera indica (mango)Results agree
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- positive
- positive
- positive
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See all 8 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.