Abstract
Summary Field studies were conducted in Mato Grosso, Brazil and Georgia, USA to evaluate the efficacy of Crotalaria spp. as a rotational cover crop for managing Meloidogyne incognita in cotton ( Gossypium hirsutum ). The two studies differed in how Crotalaria spp. were incorporated into the cotton production system to reflect differences in climate (tropical vs subtropical) and production systems typical for the two regions. In Mato Grosso, Crotalaria juncea and C. spectabilis were planted after soybean in late summer, grown for approximately 300 days, and incorporated into the soil 6-15 days prior to cotton planting. In Georgia, C. juncea and a nematode-resistant cowpea, Vigna ungiculata , were planted after maize in the late summer, grown until killed by frost in the early winter, and cotton was planted in the next season. Soil population densities of M. incognita and root galling in cotton were similar in cotton following either fallow, resistant cowpea, or Crotalaria spp. However, Crotalaria spp. significantly increased cotton plant height at the time of harvest relative to the other treatments. Except for one of the experiments in Brazil, incorporation of Crotalaria spp. in the rotational scheme did not increase cotton yield. Results indicate that a cover crop of Crotalaria spp. does not suppress M. incognita in cotton production system more than a fallow period or planting a resistant cover crop.
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Claims 4
Claim · model-written summary
M. incognita soil populations were similar after fallow, cowpea and Crotalaria.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- Crotalaria spp.e0
- Interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pathogen - Outcome
- Soil population densities of M. incognitae0
- Direction
- similare0
- Comparator
- fallow, resistant cowpeae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Soil population densities of M. incognita and root galling in cotton were similar in cotton following either fallow, resistant cowpea, or Crotalaria spp.”
Claim · model-written summary
Cotton root galling was similar after fallow, cowpea and Crotalaria.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Crotalaria spp.e0
- Interactor
- M. incognitaMeloidogyne incognitae0pathogen
- Outcome
- root galling in cottone0
- Direction
- similare0
- Comparator
- fallow, resistant cowpeae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil population densities of M. incognita and root galling in cotton were similar in cotton following either fallow, resistant cowpea, or Crotalaria spp.”
Claim · model-written summary
Crotalaria significantly increased cotton height at harvest relative to other treatments.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Crotalaria spp.e0
- Outcome
- cotton plant heighte0
- Direction
- increasede0
- Qualifier
- at the time of harveste0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, Crotalaria spp. significantly increased cotton plant height at the time of harvest relative to the other treatments.”
Claim · model-written summary
Crotalaria rotations did not increase cotton yield except in one Brazilian experiment.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- incorporation of Crotalaria spp. in the rotational schemee0
- Outcome
- cotton yielde0
- Direction
- did not increasee0
- Qualifier
- Except for one of the experiments in Brazile0
- Setting
- Brazile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except for one of the experiments in Brazil, incorporation of Crotalaria spp. in the rotational scheme did not increase cotton yield.”
The same questions in other papers
Crotalaria · growth · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- positive
rotation · yield · Gossypium hirsutum (cotton)Positive and negative results
16 papers in the same direction as this paper · 26 in the opposite direction
- positive
- positive
- positive
39 papers more in this group
See all 43 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.