Revitalizing maize downy mildew management: harnessing new-generation fungicides and host plant resistance.

ABSTRACT:

Background

Maize Downy Mildew (MDM) is a devastating disease in the humid sub-tropical/tropical regions of Asia. In this study, the prevalence of MDM during the rainy Kharif seasons of south Karnataka state (India) ranged between 6.8% (2018) and 19.1% (2022). The research evaluated new fungicidal treatments and assessed the genetic tolerance of maize lines to develop robust management strategies that enhance maize productivity and stability.

Results

During the Kharif seasons of 2021 and 2022, we conducted field trials to evaluate the effectiveness of six different fungicides, both individually and in combination. The most effective approach combined seed treatment with Metalaxyl (4%) and Mancozeb (64%) WP, followed by a foliar spray of Azoxystrobin (18.2%) and Difenoconazole

SUBMITTER: Jadesha G 

PROVIDER: S-EPMC11831823 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature