Abstract
Interaction among nitrogen fertilization using bovine manure, poultry manure, Jatropha curcas seed cake and urea, and the diseases Ramularia leaf spot (RLS) and Boll rot (BR), caused by Ramulariopsis pseudoglycines and Diplodia gossypina, respectively, in cotton plants (Gossypium hirsutum L.), was studied under field conditions. Intensity (incidence and severity in percentage) of RLS and incidence (%) of BR were evaluated over time, starting in reproductive stage B1 (first visible flower bud). A randomized complete block design with a 4x4 factorial arrangement was used (fertilizers x doses), totaling 16 treatments with four replications. Disease progress was analyzed with the nonlinear Logistic and Gompertz models, obtaining the epidemiological parameters amount of initial disease (Y0) and progress rate (r). Plants fertilized with 50 kg N ha-1, presented an incidence twice greater than those obtained with other fertilizers. The Logistic model better fits RLS, but no model could represent BR. Only the epidemiological parameters of RLS were affected differently in this experiment compared to BR disease. The possible role of organic and inorganic nitrogen fertilization in the RLS and BR management is discussed.
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Claims 4
Claim · model-written summary
Cotton plants fertilized with 50 kg N ha-1 had about twice the disease incidence of those given other fertilizers.
- Taxon
- Gossypium hirsutum L.
Gossypium hirsutume0 - Treatment
- fertilized with 50 kg N ha-1e1
- Outcome
- incidencee1
- Direction
- greatere1
- Value
- twicee1
- Comparator
- other fertilizerse1
- Setting
- field conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction among nitrogen fertilization using bovine manure, poultry manure, Jatropha curcas seed cake and urea, and the diseases Ramularia leaf spot (RLS) and Boll rot (BR), caused by Ramulariopsis pseudoglycines and Diplodia gossypina, respectively, in cotton plants (Gossypium hirsutum L.), was studied under field conditions”
e1“Plants fertilized with 50 kg N ha-1, presented an incidence twice greater than those obtained with other fertilizers”
Claim · model-written summary
The Logistic model better fitted Ramularia leaf spot (RLS) progress than the other tested model.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutume0
- Interactor
- Ramulariopsis pseudoglycinesRamulariopsis pseudoglycinese0pathogen
- Outcome
- Logistic model better fits RLSe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction among nitrogen fertilization using bovine manure, poultry manure, Jatropha curcas seed cake and urea, and the diseases Ramularia leaf spot (RLS) and Boll rot (BR), caused by Ramulariopsis pseudoglycines and Diplodia gossypina, respectively, in cotton plants (Gossypium hirsutum L.), was studied under field conditions”
e1“The Logistic model better fits RLS, but no model could represent BR”
Claim · model-written summary
No tested model could represent boll rot (BR) progress.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutume0
- Interactor
- Diplodia gossypina
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=60)
Lasiodiplodia theobromaee0pathogen - Outcome
- no model could represent BRe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=500)
Verbatim
e0“Interaction among nitrogen fertilization using bovine manure, poultry manure, Jatropha curcas seed cake and urea, and the diseases Ramularia leaf spot (RLS) and Boll rot (BR), caused by Ramulariopsis pseudoglycines and Diplodia gossypina, respectively, in cotton plants (Gossypium hirsutum L.), was studied under field conditions”
e1“The Logistic model better fits RLS, but no model could represent BR”
Claim · model-written summary
Only the epidemiological parameters of RLS were affected differently from those of BR.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutume0
- Interactor
- Ramulariopsis pseudoglycinesRamulariopsis pseudoglycinese0pathogen
- Outcome
- epidemiological parameters of RLSe1
- Comparator
- BR diseasee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction among nitrogen fertilization using bovine manure, poultry manure, Jatropha curcas seed cake and urea, and the diseases Ramularia leaf spot (RLS) and Boll rot (BR), caused by Ramulariopsis pseudoglycines and Diplodia gossypina, respectively, in cotton plants (Gossypium hirsutum L.), was studied under field conditions”
e1“Only the epidemiological parameters of RLS were affected differently in this experiment compared to BR disease”
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