The winter is finally winding down and we are bound to have warmer days and spring in the near future. As we look towards the warmer weather there a few field activities that are going to start quickly, including winter wheat greenup herbicide applications and winter annual weed burndown applications in no-till fields.
This is a listing of the Purdue field crop specialists for 2019.
Dr. Beth Hall became the new Indiana State Climatologist on 1 March 2019.
Last week, spring-like temperatures teased most of the Hoosier State with temperatures 5°F-8°F above normal (see Figure). While this encouraged more folks to get outside and enjoy the warmer weather, the week ended with a return to colder, windier conditions.
This report summarizes corn yield response to fertilizer nitrogen (N) rate in field scale trials conducted around the state of Indiana since 2006. These results are applicable to N management programs that use efficient methods and timings of N fertilizer application.
I would like to take this opportunity to introduce Marcelo Zimmer to our crop production and protection clientele.
Results from 97 field scale trials around Indiana since 2008 suggest that maximum yield response to plant populations for 30-inch row corn grown under minimal to moderate stress conditions occurs at about 32,150 PLANTS per acre (ppa), equal to seeding rates of about 33,840 SEEDS per acre (spa).
The 2019 Popcorn Agri-Chemical Handbook is available to ensure everyone in the popcorn industry is informed about products registered for use on popcorn or in popcorn storage facilities. The handbook lists agri-chemicals registered and regulatory status or special use restrictions.
Authors: Don Robison, Seed Administrator, Indiana State Seed Lab, Office of Indiana State Chemist Cover crops have increased in interest and acres planted substantially in the past decade. Indiana has now had three consecutive years of over one million acres of cover crops planted. While cover crops are beneficial, there is an underlying issue among some of the species being utilized by Indiana farmers. Weed seeds in the cover crop seed! The Indiana State Seed Lab, which is housed in the Office of Indiana State Chemist, conducts hundreds of seed tests on cover crop seed each year. These tests include investigations for the presence of noxious weed seed, seed purity, germination, seed count and other quality measures. The vast majority of cover crop seed sources are passing these tests at a high rate. There is one glaring exception – cereal rye. Starting with 2016 and continuing through ’17 and ’18[Read More…]
Authors: Jim Camberato and Bob Nielsen Summary Sulfur (S) deficiency is becoming more common in Indiana crops because S emissions from coal-fired power plants have decreased over the past few decades and, thus, so has atmospheric S deposition. We conducted 11 large plot strip trials at 7 locations to examine corn yield response to S applied as ammonium thiosulfate (ATS) in starter and/or sidedress nitrogen fertilizers. Grain yield was increased by sidedress S in 6 of 11 trials. At responsive sites, yield increases ranged from 4 to 22 bu/acre and averaged 14 bu/acre. Sulfur in starter fertilizer only, increased corn grain at only one location. Sulfur for crops from air and soil In the past, atmospheric deposition of sulfur (S) from the burning of coal provided enough S to satisfy crop needs. Pollution controls and conversion of power plants from coal to natural gas have greatly reduced S deposition, increasing[Read More…]
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