158 articles

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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.

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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…]

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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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