Abstract
The effects of row and plant spacings on percent Verticillium wilt (Verticillium albo‐atrum Reinke and Berth.) in ‘Gregg 35,’ a wilt‐susceptible cotton (Gossypium hirsutum L.) adapted to a wide range of row and plant spacings, were studied in single‐ and double‐row planting patterns. Percent wilt was decreased slightly in double‐row and significantly in single‐row patterns by close row spacings. In both planting patterns percent wilt decreased as plant populations (seeding rates) increased from low to medium levels, but percent wilt remained constant or decreased slightly at higher plant populations. The interaction of row widths ✕ seeding rates was significant only for the single‐row patterns.
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