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Screening of nutritional factors through a Plackett-Burman experimental design during the solubilization of tricalcium phosphate by Penicillium hispanicum Acta Agron. (Palmira)
Chan-Cupul,Wilberth; Jiménez-Barrera,Dulce Guadalupe; Lezama-Gutiérrez,Roberto; Ruiz-Sánchez,Esaú; Pérez-Zamora,Octavio; Buenrostro-Nava,Marco Tulio; Manzo-Sánchez,Gilberto.
Abstract Phosphorus plays a fundamental role in plant metabolic processes. Lack of phosphorus in agricultural soils is compensated with chemical fertilizers, which increase the cost of production and contaminate the environment. One approach to avoid this situation is the use of P-solubilizing fungi as biofertilizers. In this study, the solubilization of Ca3(PO4)2 by five native soil-borne micromycetes (SBM) isolated from the rhizosphere of Carica papaya plants was evaluated. The significant nutritional factors involved in the solubilization of Ca3(PO4)2 by Penicillium hispanicum were determined through a Plackett-Burman experimental design (PBED). Both Penicillium SP1 (108.5 mg/L) and P. hispanicum (106.5 mg/L) solubilized 100% of Ca3(PO4)2 at six days of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomass; Carica papaya; Optimization; Rhizosphere; Soil borne micromycetes; Tricalcium phosphate.
Ano: 2019 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000200151
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Chemical management in fungicide sensivity of Mycosphaerella fijiensis collected from banana fields in México BJM
Aguilar-Barragan,Alejandra; García-Torres,Ana Elisa; Odriozola-Casas,Olga; Macedo-Raygoza,Gloria; Ogura,Tetsuya; Manzo-Sánchez,Gilberto; James,Andrew C.; Islas-Flores,Ignacio; Beltrán-García,Miguel J..
The chemical management of the black leaf streak disease in banana caused by Mycosphaerella fijiensis (Morelet) requires numerous applications of fungicides per year. However this has led to fungicide resistance in the field. The present study evaluated the activities of six fungicides against the mycelial growth by determination of EC50 values of strains collected from fields with different fungicide management programs: Rustic management (RM) without applications and Intensive management (IM) more than 25 fungicide application/year. Results showed a decreased sensitivity to all fungicides in isolates collected from IM. Means of EC50 values in mg L-1 for RM and IM were: 13.25 ± 18.24 and 51.58 ± 46.14 for azoxystrobin, 81.40 ± 56.50 and 1.8575 ± 2.11 for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Banana; Fungicides; Mycosphaerella fijiensis; Sensitivity; Sigatoka.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100051
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