Manhattan, Kansas
March 15, 2005
Recent
unseasonably warm weather across Kansas has boosted the
maturation rate for the state's winter wheat crop, but that's
not necessarily a good thing, a Kansas State University
agronomist said.
"When people ask me if warm weather at this time of year is good
for winter wheat, I tell them, ‘No,'" said Jim Shroyer, wheat
production specialist with K-State Research and Extension.
"Wheat is a cool- season crop. It needs a more gradual
transition from winter to spring for it to perform at its best."
Moisture needs are greater for wheat that is growing rapidly
than for wheat coming out of dormancy more slowly, he explained.
When wheat moves out of its dormant state and grows under such
warm conditions, it also becomes much more vulnerable to a cold
snap. And, given that it's still just March, plenty of
opportunities remain for temperatures to fall rapidly this
spring, Shroyer said.
"People are pleased with the wheat prospects so far this year,"
he said
For much of the state, wet conditions have prevailed, so top
dressing has been slow, Shroyer said. In contrast, some western
Kansas areas are experiencing dry pockets.
He added that in the last several years, Kansas wheat as a whole
has tended to mature faster than the long-term average.
This year's rapid wheat growth is particularly worrisome because
the average last freeze in Kansas is in mid-April, said Mary
Knapp.
Knapp, who is the state climatologist for Kansas, said last year
Kansas winter wheat was hit by two periods of freezing weather
in May.
During the first two weeks of March this year, temperatures in
numerous locations around the state averaged 6 to 7 degrees
above normal, while average low temperatures were in the 26 to
27 degree range, said Knapp, who is in charge of the Kansas
Weather Data Library, housed on the K-State campus.
"Something else that people might want to be aware of is that
the U.S. Climate Prediction Center has forecast that the
southern Plains will have cooler than usual and wetter than
usual weather during the March-through-May period," she said.
On March 14, the Kansas Agricultural Statistics Service rated
the condition of Kansas wheat at 4 percent poor to very poor, 27
percent fair, 55 percent good, and 14 percent excellent. Four
percent of the wheat was jointed - 1 point more than last year's
percentage, but the same as the five-year average.
The service's wheat freeze-damage report indicated that 84
percent of the state's wheat crop had not been damaged, 14
percent had light damage, and 2 percent was moderately damaged.
"Early reports estimate that 2 percent of Kansas wheat has been
lost to winterkill," the KASS report said. "Nineteen percent of
the wheat crop had light wind damage, and 4 percent had moderate
wind damage."
-30-
K-State Research and Extension is a short name for the Kansas
State University Agricultural Experiment Station and Cooperative
Extension Service, a program designed to generate and distribute
useful knowledge for the well-being of Kansans. Supported by
county, state, federal and private funds, the program has county
Extension offices, experiment fields, area Extension offices and
regional research centers statewide. Its headquarters is on the
K-State campus in Manhattan. |