Effect of potassium and manganese phosphites in the control of Pythium damping - off in soybean a feasible alternative to fungicide seed treatments
BACKGROUND: Use of fungicide seed treatments for control of soybean soilborne diseases such as Pythium damping - off has increased worldwide. However, emergence of Pythium strains resistant to metalaxyl - M has prompted the need for alternative technologies to fungicides for damping - off control. T...
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2018carmona1.pdf LINK AL EDITOR |
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| 008 | 180727t2018 xxu|||||o|||| 00| | eng d | ||
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| 022 | |a 1526-498X | ||
| 024 | |a 10.1002/ps.4714 | ||
| 040 | |a AR-BaUFA | ||
| 245 | 1 | 0 | |a Effect of potassium and manganese phosphites in the control of Pythium damping - off in soybean |b a feasible alternative to fungicide seed treatments |
| 520 | |a BACKGROUND: Use of fungicide seed treatments for control of soybean soilborne diseases such as Pythium damping - off has increased worldwide. However, emergence of Pythium strains resistant to metalaxyl - M has prompted the need for alternative technologies to fungicides for damping - off control. The use of phosphites (Phis) has been proposed as a method to control oomycetes, but their use as seed treatments in soybean is limited by the lack of information on their efficacy. The effect of potassium (K) and manganese (Mn) Phis (as seed treatments) in the control of Pythium damping-off in soybeanwas evaluated in vitro and in vivo. In vitro, treated seeds and a control were placed on potato dextrose agar and the damping-off severity caused by Pythium aphanidermatum (Edson) Fitzpatrick, Pythium irregulare Buisman, and Pythium ultimum Trow was assessed 5 days after incubation using an ordinal scale. In vivo, treated seeds and a controlwere planted in polystyrene pots and emergencewas evaluated 21 days after planting. RESULTS: Analysis of the in vitro data using a multinomial generalized linear model showed that the probabilities of non - germinated, dead seeds ranged from 0.64 to 1.00 in the control and from 0 to 0.13 in the Phi treatments in each of the Pythium species. Probabilities of seed germination without or with damping - off symptoms were significantly higher for seeds treated with the Phi products than for the control. In the in vivo experiment, the Phi - based products increased seedling emergence by up to 29% on average compared with the untreated control. CONCLUSION: Mn and K Phis are feasible alternatives as seed treatments to control Pythium damping-off in soybean. This study is the first, worldwide, to document the efficacy of K andMn Phis inthe control of soybean Pythium damping - off. | ||
| 653 | |a PHOSPHITES | ||
| 653 | |a OOMYCETE CONTROL | ||
| 653 | |a DAMPING-OFF | ||
| 653 | |a SEEDLING DISEASE | ||
| 653 | |a SOYBEAN | ||
| 653 | |a SEED TREATMENTS | ||
| 700 | 1 | |9 3109 |a Carmona, Marcelo Aníbal |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Fitopatología. Buenos Aires, Argentina. | |
| 700 | 1 | |9 22833 |a Sautua, Francisco José |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Fitopatología. Buenos Aires, Argentina. | |
| 700 | 1 | |9 15443 |a Grijalba, Pablo Enrique |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Fitopatología. Buenos Aires, Argentina. | |
| 700 | 1 | |a Cassina, Mariano |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Fitopatología. Buenos Aires, Argentina. |9 66827 | |
| 700 | 1 | |a Pérez Hernández, Oscar |u University of Central Missouri. Department of Biology and Agriculture. Warrensburg, MO, USA. |9 66828 | |
| 773 | 0 | |t Pest Management Science |g Vol.74, no.2 (2018), p.366-374, tbls., grafs. | |
| 856 | |f 2018carmona1 |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2018carmona1.pdf |x ARTI201808 | ||
| 856 | |u https://www.wiley.com |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||