Abstract
AbstractA study was begun at Temple, Texas, in 1972 to assess the effect of narrow (50‐cm) and conventional (100‐cm) row spacing of grain sorghum [Sorghum bicolor (L.) Moench] on runoff and erosion from field‐sized areas. Sorghum in narrow rows established a more complete plant canopy earlier than sorghum with conventional row spacing and provided more ground cover for much of the growing season. In 1973, runoff was 45% less and soil loss was 39% less from narrow‐row grain sorghum than from sorghum with conventional row spacing. Narrow‐row spacing of sorghum increased ground cover significantly (5% level) 35 days after emergence in 1974. Canopy cover was at maximum by 63 days after seedling emergence and provided a ground cover of 46 and 81% for sorghum with 100‐ and 50‐cm row spacing, respectively.
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