January 1, 2025Weed Science

Competitive ability of drought-tolerant corn hybrids in the presence of redroot pigweed (Amaranthus retroflexus) under optimal and reduced irrigation levels

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Observational analysis shows drought-tolerant corn hybrids mitigate water stress in corn, highlighting weed competition challenges.

Drought-tolerant corn maintained shoot biomass under reduced irrigation, while drought-susceptible corn saw a 45% decrease.
Redroot pigweed increased in biomass by 80% when competing with drought-susceptible corn under limited water conditions.
The study used a semi-controlled environment with variable weed densities and two irrigation levels to assess competition.
These findings support using drought-tolerant hybrids to enhance corn production while managing weed competition.

Odemba et al. (2025) studied this question.

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