Eficacia de fungicidas antioomycetes en la desinfección de hijos de piña MD2 para el control de Phytophthora nicotianae var. parasitica Dastur

Revista de Proteccion Vegetal

García, Omar¹  de Ávila, Rey¹  Lovaina, Yuniesky¹  Santana, Yasmiani²  Pérez-Vicente, Luis³  Rodríguez, José A³  Pérez-Miranda, Michel⁴ 

[1] Empresa Agroindustrial Ceballos, Cuba;Ministerio de Agricultura de Cuba, Cuba;Ministerio de Agricultura de Cuba, Playa, Cuba;Syngenta Iberoamericana, Cuba

关键词: mefenoxam;    mandipropamid;    propamocarb;    fenamidone;    fluopicolide;    Phytophthora heart rot.;   

DOI  :  

学科分类：农业科学（综合）

来源: Centro Nacional de Sanidad Agropecuaria

【 摘 要 】

The pineapple crop (Ananas comosus (L.) Merr.) is attacked by several pests that affect its productivity, quality and production costs. The variety MD2 or Golden Ripe is very susceptible to root and heart rot by Phytophthora nicotianae var. parasitica Dastur. The pathogen is transmitted by infected seeds, sporangia disseminated by wind, and water, and chlamydospores existing in infected soils that infect roots, stems and fruits. Two field experiments with a randomized block design and four replicates were carried out at the Agroindustrial Enterprise Ceballos in Ciego de Avila province, to study the efficacy of treatments by dipping pineapple slips into the systemic fungicides mefenoxam + mancozeb, azoxystrobin, fluopicolide + propamocarb, fosetyl Al + propamocarb, fenamidone + propamocarb, and mandipropamid in comparison with the standard treatment with fosetyl Al. The best results were obtained with the treatments mefenoxam + mancozeb (100g +1280 g/100L of water), mandipropamid (50 g/100L), fluopicolide + propamocarb (12.5g + 125g/100L), and fenamidone + propamocarb (44.4g + 667g/100 l), which showed less than 1.6% of infected plants at 110 days after planted. They were followed by azoxystrobin (25 g pc/100L), propamocarb + fosetyl Al (106g + 620g), and fosetyl Al (200 g/100L) with an incidence of 5-10% of infected plants, meanwhile the untreated plots finished with 18% of infected plants. These systemic fungicides can be used for disinfecting pineapple planting material against Phytophthora nicotianae var. parasitica in soils conducive to rot

【 授权许可】

CC BY-NC