University of Nebraska-Lincoln Extension, Institute of Agriculture and Natural Resources


July 14, 2006

Field updates

In a nutshell:

Del Hemsath, Extension Educator in Dakota, Thurston and Dixon counties: Corn is tasseling in most areas. The heat and lack of moisture is stressing some corn and could impact yields. Soybeans still look good and are in the R1-R2 stage. Second cutting alfalfa is done, regrowth will need some rain. There haven’t been any reports of serious insect problems, although soybean aphids have been found in the area in low numbers. Subsoil moisture is becoming short, sandy areas and high clay areas are showing the heat and drought stress. Irrigators are running their pivots on corn.

Tamra Jackson, Extension Plant Pathologist, Lincoln: There have been reports of common rust of corn in south central Nebraska and gray leaf spot is beginning to develop in some areas. Recent rainfall and the increase in humidity will likely exacerbate both these diseases.

Bob Klein, Extension Crops Specialist, West Central REC: Wheat yields were all over the board this year, ranging from disease fields that weren't even worth harvesting to those yielding 110-120 bu/ac. You could really tell which producers did a good job managing their fallow – the top dryland yields were in fallow. Corn and soybeans look real good, especially irrigated fields, but some dryland corn is beginning to run out of moisture. While the corn is still hanging on in these areas, the upcoming high temperatures are likely to take a toll. Pastures and range are coming back to life following scattered rains earlier this week. We’ve seen some Stewart’s Wilt here.

Drew Lyon, Extension Dryland Crops Specialist at the Panhandle REC: – We’ve had some moisture and the summer crops are off to a good start, but 100+ temperatures will have an effect. A lot of proso millet was planted when there was a little rain and it’s coming up now. Several crops are reaching critical growth stages where you don’t want particularly high temperatures: dry beans are getting ready to flower and corn is about ready to tassel. People were pleasantly surprised by how well their wheat did, partly due to the low expectations they had for it. Generally wheat yields have varied, but test weights have been good.

Dave Stenberg, Extension Educator in Dawson County: We did get a little rain – one to three-plus inches – in the last couple weeks, but it was spotty. A couple weeks ago there was a smattering of hail. Irrigated soybeans are looking good and pastures and grasses revived a little with the recent moisture. No sign of rust or insects in the sentinel soybean plots. Grasshopper surveyors were in this week: not too many grasshoppers in Dawson or Custer counties, but Thomas County had a lot and there were some found in the Panhandle and along the Platte. Hoppers were in various sizes and stages. We sold a lot of hay last fall because we had a lot, but some producers wish they’d waited until now with the higher prices. We don’t have the hay acreage we used to, given the emphasis on ethanol in the area. Prices ranged from $80 to $90 for big round and square bales and over $100 for small bales. High quality hay with a high feed value is going for $125. More and more cow-calf producers are using distillers grains to supplement pasture feeding.

Ralph Kulm, Exension Educator in Holt County: Wheat harvest is done and overall we had a pretty good crop. I was amazed that wheat fields where the flag leaf was done a month ago turned out a whole lot better than we expected. For as bad as some of the fields looked earlier this summer, the harvest didn’t turn out too bad. Dryland fields were yielding 30-50 bu/ac with 17% protein and irrigated fields were yielding 80-105 bu/ac with good test weights and protein. I think we may see an increase in planted acres next year. Row crops are hanging on and corn is tasseling, but dryland crops are close to being in trouble if we don’t get rain soon. Pastures are in about the same condition and will need rain.

Tom Hunt, Extension Entomologist at the Haskell Ag Lab, NEREC: It’s dry here and recent rains have been spotty. Corn is in various degrees of shooting tassels. Insects have been appearing about one week ahead of normal. We’re starting to see soybean aphids all over northeast Nebraska, but at low numbers. A few fields are likely to need treatment next week, depending on whether the hot weather slows down insect populations. We’ve also had a pretty good flight of western bean cutworms and treatment may be needed in some areas. Insect populations aren’t out of hand yet, but they’re running ahead of normal and should be watched. Cowpea aphids like hot weather and have been reported in alfalfa. Corn looks amazingly good, given the lack of rain, but the next few days of 100+ temperatures could turn it. Rootworm pressure is heavy in many areas this year. (Learn how to assess your rootworm treatment strategy in this week's CropWatch. )

Gary Lesoing, Extension Educator in Nemaha County: Rains have been good but spotty. We've had several days of heavy dews which also helped. Corn is nearing tasseling. You can really see the difference between no-till and tilled areas. Wheat harvest is complete and yields have been all over the board; several producers had 90 bu/ac dryland with good test weights. Some fields with wheat streak mosaic suffered reduced yields and some weren’t harvested. One farmer had 68 bu/ac in one field while a nearby field with wheat streak mosaic yielded only 20 bu/ac. Control of volunteer wheat to break the green bridge from one wheat crop to the next is essential in controlling the wheat curl mite, vector for wheat streak mosaic virus. We’re likely to see increased wheat acreage next year. We’ve had a few potato leafhoppers in alfalfa, so producers should be prepared to scout, especially in new stands.

Tom Dorn, Extension Educator in Lancaster County: Conditions here are similar to those reported for Nemaha County. Rains have been spotty, but very beneficial. Wheat harvest is done. Corn is hanging on and it has been just amazing, given it’s been curling in the afternoons.

Lenis Nelson, Extension Crops Specialist: We’ve had some wonderful wheat with yields of 100 bu/ac dryland in test plots. Some tall varieties lodged pretty badly. Wheat variety test data is pretty varied this year. Generally in eastern Nebraska the wheat got rain at just the right time and many fields yielded well. Corn in the area is tasseling. Rainfall has been pretty variable.

Al Dutcher, Extension State Climatologist: Not much promise for significant moisture in the next week. There’s a weak chance of scattered storms this evening (July 14) in extreme southeast Nebraska and a 10% chance for northeast Nebraska. Unfortunately the forecast for high temperatures the next few days looks pretty solid. Temperatures can be expected to range from 98 to 105 or 110 in the Panhandle by this Sunday, with high dew points. Eastern Nebraska could see dew points in the 65-75% range Sunday. By Wednesday there should be a break in the heat wave, with temperatures dropping to the mid 80s with a chance of moisture. Temperatures are expected to increase again by the last week of July. The high heat and dew points will mean increased stress for cattle and hogs. The heat wave will extend across the central plains. A lot of corn may be pollinating during this period.


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Copyright 2006 by the University of Nebraska Board of Regents. All rights reserved.
Published by University of Nebraska-Lincoln Extension in the Institute of Agriculture and Natural Resources Cooperating with the counties and the U.S. Department of Agriculture.
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