Abstract
Abstract Gall formations on the roots of plants that are susceptible to root‐knot nematodes may be due to the presence of an auxin. Maleic hydrazide (MH), an antiauxin, has produced nematode and gall‐inhibiting effects in some plants. This chemical was tested on peanuts, Arachis hypogaea L., to determine if it would aid in preventing galling and nematode damage. A seed soaking treatment at planting in 125 ppm and also foliar spray applications of 125 and 250 ppm of maleic hydrazide were applied to ‘Dixie Spanish’ variety peanuts that were in the two‐leaf stage. The plants were grown in the greenhouse at 21 to 29C for 42 days in soil that had been inoculated at planting with Northern root‐knot nematode, Meloidogyne hapla Chitwood. Little stunting and slight chlorosis occurred in the seed treatment but severe stunting and chlorosis was observed early in the test in the foliar applications. At harvest, total plant green weights and plant heights were significantly reduced in the MH foliar treatments. Galling was not inhibited and microscopic examinations of the galls failed to reveal significant differences in giant cell formation, or nematode development or reproduction in the MH treatments.
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Claims 5
Claim · model-written summary
Foliar maleic hydrazide treatments significantly reduced total plant green weight and plant height of peanut.
- Taxon
- Arachis hypogaea
Arachis hypogaeae1 - Treatment
- MH foliar treatmentse3
- Outcome
- total plant green weights and plant heightse3
- Direction
- reducede3
- Setting
- greenhousee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“At harvest, total plant green weights and plant heights were significantly reduced in the MH foliar treatments”
e2“The plants were grown in the greenhouse at 21 to 29C for 42 days”
e1“tested on peanuts, Arachis hypogaea L.”
Claim · model-written summary
Seed treatment with maleic hydrazide caused little stunting and slight chlorosis of peanut.
- Taxon
- Arachis hypogaeaArachis hypogaeae1
- Treatment
- seed treatmente4
- Outcome
- stunting and slight chlorosise4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Little stunting and slight chlorosis occurred in the seed treatment but severe stunting and chlorosis was observed early in the test in the foliar applications”
e1“tested on peanuts, Arachis hypogaea L.”
Claim · model-written summary
Foliar maleic hydrazide applications caused severe stunting and chlorosis of peanut early in the test.
- Taxon
- Arachis hypogaeaArachis hypogaeae1
- Treatment
- foliar applicationse4
- Outcome
- severe stunting and chlorosise4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Little stunting and slight chlorosis occurred in the seed treatment but severe stunting and chlorosis was observed early in the test in the foliar applications”
e1“tested on peanuts, Arachis hypogaea L.”
Claim · model-written summary
Maleic hydrazide treatments did not inhibit galling by Meloidogyne hapla on peanut.
- Taxon
- Arachis hypogaeaArachis hypogaeae1
- Treatment
- MH treatmentse6
- Interactor
- Meloidogyne hapla
Meloidogyne haplae7pathogen - Outcome
- Gallinge5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Galling was not inhibited”
e6“microscopic examinations of the galls failed to reveal significant differences in giant cell formation, or nematode development or reproduction in the MH treatments”
e7“Meloidogyne hapla Chitwood”
e1“tested on peanuts, Arachis hypogaea L.”
Claim · model-written summary
Maleic hydrazide treatments did not significantly change giant cell formation or nematode development and reproduction on peanut.
- Taxon
- Arachis hypogaeaArachis hypogaeae1
- Treatment
- MH treatmentse6
- Interactor
- Meloidogyne haplaMeloidogyne haplae7pathogen
- Outcome
- giant cell formation, or nematode development or reproductione6
- Direction
- no_changeinferrede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“microscopic examinations of the galls failed to reveal significant differences in giant cell formation, or nematode development or reproduction in the MH treatments”
e7“Meloidogyne hapla Chitwood”
e1“tested on peanuts, Arachis hypogaea L.”
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