Des Moines, Iowa
November 10, 2008Source:
Crop Insight - A publication of Pioneer Agronomy Sciences
http://www.mccormickcompany.net/pioneer/cropinsights/76.pdf
Hybrid maturity switches based
on long-term research
by Mark Jeschke and Steve Paszkiewicz
Summary
- When rainfall
significantly delays field and planting operations,
switching to early maturity hybrids is sometimes needed to
ensure timely crop maturation.
- To help guide these
decisions, Pioneer researchers conducted planting date
studies over 18 years (1987 to 2004). Studies included a
range of hybrid maturities across planting dates extending
from April through June.
- Results indicate that
growers should plant full-season hybrids in all regions of
the Corn Belt until approximately May 27. Switching to an
early maturity hybrid prior to this point most likely will
not be beneficial and may result in reduced profitability.
- In the central Corn Belt,
growers may choose to replace full-season hybrids with early
hybrids in late May, but there was no significant profit
penalty for staying with a full or mid-maturity hybrid, even
with delayed planting.
- In the north-central,
northern and far-northern Corn Belt, planting must be
delayed until the last week of May or first week of June
before there is a high likelihood that switching to an early
maturity hybrid will be profitable.
- Growers should consult
their local Pioneer representative for recommendations about
hybrid switches under delayed planting conditions.
Full report:
http://www.mccormickcompany.net/pioneer/cropinsights/76.pdf
|
|
