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Crop SciencesCollege of Agricultural, Consumer, and Environmental Sciences |
April 2008 Newsletter Volume 27:4
| 321 210th Ave. Monmouth, Illinois 61462 Phone & Fax: (309) 734-7459 |
Eric A. Adee Pr. Research Specialist e-mail: adee@illinois.edu |
Marty Johnson Farm Foreman |
| APRIL WEATHER: | Soil Temperature (oF) | |||
| Air Temp. (oF) | Humidity (%) | 4" (Bare) | 4" (Sod) | |
| Monthly Average High | 58.6 | 94.2 | 55.8 | 50.6 |
| Monthly Average Low | 39.1 | 43.1 | 45.8 | 46.3 |
| Observed High (date) | 77 (22-24) | 100 (several) | 69 (24) | 60 (24) |
| Observed Low (date) | 25 (1) | 25 (6,17) | 38 (14) | 39 (3) |
2008 Precipitation (in inches)
| Month | Monthly Total |
Monthly Departure from Average |
Since January 1 Total Accumulation |
Since January 1 Total Departure |
|
| January | 1.14 | -0.48 | 1.14 | -0.48 | |
| February | 3.04 | +1.32 | 4.18 | +0.84 | |
| March | 1.28 | -1.57 | 5.46 | -0.73 | |
| April | 4.36 | +0.60 | 9.28 | -0.13 | |
Growing Degree Days (Base 50)
| Month | Monthly Total |
Monthly Departure from Average |
Total Accumulation Since April 1 |
Total Departure Since April 1 |
|||
| April | 179 | +7.4 | 179 | +7.4 | |||
| May | 520 | +126.3 | 699 | +126.3 | |||
Cropping Update
The earliest corn planted at NWRC was on April 4 in two planting date studies. It took 3 weeks for that corn to emerge, which is understandable as it took that long to accumulate the 110+ Growing Degree Days necessary to emerge. Stand counts taken 2 weeks after emergence show an average of 92% emergence, which is very good considering the wet and cool soils.
Some of the corn was planted the week of April 20, but most of the corn at NWRC was planted the first week of May. The 2nd planting date in the corn studies was on April 24, with emergence 2 weeks after planting. Corn planted May 1 was just emerging 11 days later.
Wheat is in the late jointing stage with the flag leaf emerging (Feekes 8), and the head starting up the stem in some of the earliest tillers. The wheat looks very good where it survived the winter. The wheat was killed out in some lower lying patches that had ice set on them late in the winter. Many of these winter kill spots were just a tire track or similar depression on some of our flatter fields. Leaf health looks good so far.
The oat trial was planted April 7. The crop emerged in good shape and is growing
well.
The first soybean study was planted May 6.
Research at NWRC
Following is a list of proposed studies to be conducted at NWRC this growing season. The new studies or new factors in studies are in bold. The researchers associated with the studies are listed as well. This list is not final as plans for studies could change during the season.
NWRC 2008 Research Projects
| VARIETY TRIALS | |
|---|---|
| Commercial Corn Hybrid Trial | D. Joos (off-site) |
| Corn Hybrid Trial following Corn | D. Joos |
| Conventional Soybean Variety Trial | R. Esgar (off-site) |
| Roundup Ready Soybean Variety Trial | R. Esgar (off-site) |
| Oat Variety Trial | F. Kolb/N. Smith/E. Adee |
| FERTILITY PROJECTS | |
| Nitrogen Rates for Corn following Continuous Corn & Soybeans | Nafziger/Adee/M. Johnson |
| Nitrogen Timing and Rates for Wheat Production | Paul/Adee/Ebelhar/Johnson |
| Corn Residue Removal | Nafziger/Adee/J. Coulter |
| On-farm N-rate Trial for Corn | Nafziger/Adee/Johnson |
| N Source and Timing for Cont. Corn | Fenandez/Greer |
| In-Furrow & Foliar Treatments for Corn and Soybean | Ortiz-Ribbing/Adee/Johnson |
| CULTURAL PRACTICES | |
| Comparison of Corn-Corn-Soybean Rotation with Corn-Soybean and Continuous Corn |
Nafziger/Adee/Johnson |
| Continuous Corn With Strip-Tillage and Management Variables | Nafziger/Adee/Johnson |
| Crop Rotation Study with Corn, Soybean and Wheat | Nafziger/Adee/Johnson |
| Quantifying Yield Accumulation in Corn | Nafziger/Adee/Johnson |
| Corn Planting Date and Population | Nafziger/Adee/Johnson |
| Corn Planting Date for Corn after Corn | Nafziger/Adee/Johnson |
| Effect of Tillage Depth on Corn Production | E. Adee/M. Johnson |
| Corn & Soybean Productivity on Muscatune Soil | K. Olson/Adee/Johnson |
| Tillage Rotation | M. Wander |
| Seeding Rate for NT Soybeans in 15" rows | Adee/Johnson |
| Row Cleaner Depth for Corn | Adee/Johnson |
| PEST MANAGEMENT | |
| Corn Rootworm Insecticides Comparison | Steffey/Gray/Estes |
| RwBt vs. Insecticide Demonstration | Steffey/Gray/Estes |
| Efficacy of Fungicides on Wheat | E. Adee/ C. Bradley |
| Evaluation of Sweet Corn for Resistance to Stewart’s Wilt | J. Pataky |
| Soybean Aphid Movement | D. Voegtlin/K. Steffey |
| Sudden Death Syndrome Soybean Variety Evaluation | C. Bradley/K. Ames |
| Fungicides on Soybean Varieties | C. Bradley/K. Ames |
| Fungicides on Corn | Bradley/Ames/Adee |
| SCN Seed Treatment | T. Niblack/ E.Adee |
| Sentinel Plots for Soybean Rust | Adee/Johnson |
| Monitoring WCR Movement into Soybeans | Adee/Johnson |
| White Mold Variety Evaluation | R.Bowen/C.Hill |
| Fungicide Timing on Soybean | R.Bowen/C.Hill |
| RwBt vs. conventional corn | E. Adee/M. Johnson |
| RwBt with & w/o Soil Insecticide | E. Adee/M. Johnson |
| Fungicides & Tillage on Continuous Corn | Adee/Nafziger/Johnson |
| RR and Greenstem on Soybean | R.Bowen/C.Hill |
| Intense Management of Soybean | Adee/Johnson |
| Corn Seed Treatment | Bradley/Joos/Adee |
| Wheat Variety, Fungicide, Rotation, Tillage | Adee/Johnson/Bradley |
| Soybean Seed Treatment | Bradley/Ames |
| Soybean Population by Seed Treatment | Bradley/Ames |
| RRY2 Soybean Yield Trial | Elmore/Adee/Johnson |
| Fungicide Timing on Corn | Nafziger/Adee/Johnson |
| Early Pre- vs. Post Herbicide for Soybeans | Adee/Johnson |