ABSTRACT
Skips of various numbers and lengths were established in cotton (Gossypium hirsutum L.) planted between April 27 and May 3 in a four-year study initiated in 1980. Skips were indexed according to length (skips 0.3-0.45 m were assigned a value of 1 with index value increased by 1 for each additional 0.15 m of skip length). Plots with total index sums of 20, 40, and 60 per 18.3 a of row were compared with plots with excellent stands (no or very few skips) and with plots reworked and replanted 14-15 days after first planting. In three of four years, replanted plots yielded significantly less than all originally-planted plots except some in 1980 and 1982 that had skips making up 60-90 percent of the 18.3 m of row length (indexes of 40 and 60). Replanted plots in 1984 yielded higher than plots with indexes of 40 and 60 and yielded as high as those with excellent stands or those with up to 30 percent of 18.3 a of row In skips (index of 20). In all four years, plots with excellent original stands did not yield higher than those with an index of 20 but did outyield those with indexes of 40 and 60 except in 1981.
|