Every spring, dozens of cooperators throughout the state put forth considerable effort in trapping for the arrival and intensity of black cutworm moths.
Every spring, dozens of cooperators throughout the state put forth considerable effort in trapping for the arrival and intensity of black cutworm moths.
Multiple intensive black cutworm moth captures, 9 or more caught over a 2-night period, around April 12, signaled for us to begin tracking heat units (Base 50), see “Black Cutworm Pheromone Trap Report.”
Dr. Jocelyn Smith and Art Schaafsma at the Ridgetown campus of the University of Guelph recently reported a new and unexpected development in the resistance to Bt saga – this time it happened all the way out in the Maritime Corn Belt (MCB), in Nova Scotia, a province in Eastern Canada.
Suitability of the soil moisture and whether a field is “fit” for field work and planting is partially “in the eyes of the beholder”, but is also subject to the “laws of relativity” and calendar date. Use your best judgement.
Near term, Sunday looks like the next most likely precipitation event around the state. The active pattern seems to continue, with chances of rain continuing about every 3-4 days. Meanwhile, temperatures begin to trend more summer-like, with 80 degree days coming statewide, and likelihood for above average temperatures in the 6-10 day outlook high (see map, cpc.ncep.noaa.gov). Important to note: high temperatures and excessive moisture favor many different kinds of disease and insect development. Scout any crops that have been planted for disease development or infestation and act accordingly. Contact your local Purdue Extension office for help in identifying problems or economic thresholds for treatment.
Recovery from early season damage to corn is strongly dependent on the health of the main (apical) growing point region following the damage.
Our rainy wet weather conditions have certainly caused a lot of delays in field operations this spring. One of these challenges we face in a spring like this one is the process of getting crops terminated and summer annual crops like corn and soybean planted in fields where cover crops have grown somewhat large.
The risk of damaging spring frost events is one of the downsides to planting corn earlier than normal, but is one growers often accept when early spring field conditions are otherwise suitable for planting. However, the threat of low temperatures in late May or early June also raises the specter of frost or low temperature damage to young corn plants, regardless of planting date. Early morning temperatures in the 30so(F) coupled with clear calm conditions overnight certainly are favorable for frost formation on exposed surfaces, including leaves of young corn plants. In other words, temperatures do not need to drop to 32oF or cooler in order for frost to form. When significant frost develops on young corn plants, it is tempting to jump to the logical conclusion that significant plant mortality will soon follow. However, frost by itself is not a guaranteed “kiss of death” for young corn plants. What[Read More…]
Ammonium thiosulfate (ATS) is commonly added to liquid nitrogen (N) solutions to provide sulfur (S) to crop plants. Sulfur response trials have shown ATS to be an effective S fertilizer, however, thiosulfate and its first breakdown product, tetrathionate, are not utilized by plants.
Soils in Indiana have been too wet for field work almost since last fall. What I mean by “too wet” is so wet that the soils would not even support the weight of the field equipment without creating ruts or the equipment literally getting stuck.
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