The right dose and timing is important for nitrogen fertilization.
Crop: winter barley (two-rows and multiple rows)
Location: Wieselburg, Austria
Products: NAC 27N
Scientific field trial with 8 treatments, 2 crop varieties and 4 replicates. All treatments received 150 kg nitrogen fertilization split into 2 or 3 doses, with 30 to 90kg of nitrogen. The aim of the study was to assess the best fertilization strategy to maximize grain yields and/or protein content.
Total nitrogen: 150 kg / ha
Start of growth in spring : 30, 60, or 90 kg of N/ha
2nd dose at BBCH 31: 30, 60, or 90 kg of N/ha
3rd dose at BBCH 39: 0, 30, 60, or 90 kg of N/ha