Effect of Temperature and Fungicides on Survival of Corn Grown From Kernels Infected with Helminthosporium maydis

Abstract

Kernels of corn infected with Helminthosporium and transferred to 24 C. Seedlings that started growth at maydis race T and sown early in May in the field resulted 18 C wilted 17-21%, but those that started at 24 C wilted in 0-2% wilted seedlings, but those sown 2 weeks later 27-30%. A seed lot containing a high percentage of yielded 0-30% (avg 8%) wilted seedlings despite a better kernels infected with H. maydis was treated with 16 seedling stand at the later date. In the greenhouse, a high fungicides or combinations thereof. Of these, thiram plus temperature (24 C) increased losses from preemergence either carboxin or benomyl gave the best seedling stands. blight, root rot, and wilt, attributable to H. maydis, whether plants were maintained at 24 C or started at 18 C Phytopathology 63:138-140

Effective chemical protection against Maydis Leaf Blight of Maize incited by Helminthosporium maydis under the in-vitro and in-vivo condition

“…Vaibhav et al (2011) [17] also reported that Propiconazole 25 EC was highly effective and it ensured minimum disease intensity (21.40%) and highest yield (29.37 q/ha) followed by chlorothalonil (27.93% disease intensity and 27.60 q/ha yield). The similar results were recorded by Kommedahl and Lang (1973) [7] , Nasir et al, (2012) [10,19] .…”

Metodologia para a detecção de >i<Fusarium moniliforme>/i< Sheld. e sua ocorrência em sementes de milho (>i<Zea mays>/i< L.) produzidas no Estado de São Paulo

“…Em experimentos realiza dos por VALLEAU (1920) e por HOSNl et alii (1967) foi demonstrada a ocor rênc ia deste fungo como agente causa 1 de podr i dões, por ter si do o mesmo freqüentemente isolado de colmos de milho que apresentavam sintomas de podridão. AYERS et alii (1972) (1960) ficou determinado que a temperatura em_ torno de 28�C é a mais adequada para testes gerais de pa tologia de s�mentes prodUzidas em áreas tropicais, estando o milho aqui inclufdo.…”