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Corn Performance in Relation to Row Spacings, Populations, and Hybrids on Five Soils in Indiana 1
Author(s) -
Stivers R. K.,
Griffith D. R.,
Christmas E. P.
Publication year - 1971
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1971.00021962006300040020x
Subject(s) - loam , agronomy , hybrid , dry matter , population , row , field experiment , grain yield , growing season , mathematics , yield (engineering) , soil water , biology , physics , ecology , demography , database , sociology , computer science , thermodynamics
The purpose of this research was to determine whether narrow rows of corn ( Zea mays L.) would yield more grain and dry matter than conventional 102−cm wide rows under a wide range of conditions. Eleven location‐year trials were conducted on five slightly acid soils at four widely scattetred locations in Indiana during 1966–1968. Three row widths: 51−, 76−, and 102−cm; two populations: 54,000 and 69,000 plants/ha; and three hybrids: one early, one full season, and one full season or late; were compared. Average grain yields were increased 7.3% with rows 51−cm wide, and 4.4% with rows 76−cm wide in comparison to rows 102−cm wide. More barren stalks contributed to the lower yields of the 102−cm rows under drouth stress conditions. Total aboveground dry matter yields on Chalmers silty clay loam soil were 5.0% higher with 51−cm rows and .5.4% higher with 76−cm rows than those of the 102−cm rows. The 69,000 plants/ha population produced 4.0% more dry matter than the 54,000 population on this Chalmers soil. Average grain yields of the 69.000 plants/ha population were 2.3% lower than those of the 54,000 population in the II location‐year trials. Full season corn hybrids generally produced higher yields of grain than either early or late hybrids in these trials. Some full and late, as well as early season, corn hybrids had higher grain yields with narrow corn rows.