Synopsis
Protein and oil content of grain was found to decrease with higher plant populations and lower N levels. Of yield components, ears per 100 plants was influenced most by varying populations and fertility levels. The 9 single‐cross hybrids tested showed different yield responses to N levels and populations.
Synopsis
Varieties showed a different yield response to seeding rates and to rates of nitrogen application. This response did not seem to be correlated with varietal morphological characteristics. Variety selection controlled more agronomic characteristics than either rate of nitrogen application or rate of seeding.
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