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ARS Home » Plains Area » Lincoln, Nebraska » Agroecosystem Management Research » Research » Publications at this Location » Publication #123482
Title: VEGETATIVE DEVELOP OF CORN UNDER VARIOUS N MANAGEMENT STRATEGIES

Author
item Wilhelm, Wallace
item Varvel, Gary

Submitted to: Abstract of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: 7/21/1998
Publication Date: N/A
Citation: Wilhelm, W.W., Varvel, G.E. 1998. Vegetative develop of corn under various n management strategies. Agronomy Abstracts p. 94.

Interpretive Summary:

Technical Abstract: Rate of crop development is one the critical processes in determination of yield. Development defines the time of occurrence and, to a great extent, the size of organs. In grain crops, since the harvest index is relatively stable, larger plants tend to have greater yield. In an N management experiment conducted in 1992, we observed distinct differences in time of tassel appearance (VT) across a range of N treatments, with both limited and excessive levels of N hastening development by about one day. Observations on development in response of several hybrids, in both continuous culture and when rotated with soybean, to N application rates were continued for several seasons. Preliminary analysis of results from the later experiments appear to confirm that rate of crop development is delayed with a moderate N supply. Reasons for, and implications of, these results will be discussed.