Different production targets of wheat (feed, flour, starch and bioethanol) require different fertilization strategies. In order to reach the desired target, the timing and the amount of the nitrogen application plays the major role.
Due to the unexpected weather conditions and lack of precipitation in autumn and spring, wheat is currently in different stages of development depending on the regions, which requires the choice of different fertilization strategies.
The second fertilizer-application in spring is usually done between the start of shooting and the 2 node stage (EC 30-32). A dense stock should receive the nitrogen not before EC 32. In this way the wheat has enough time to reduce the shoots due to the temporary lack of nitrogen. If the stock is too sparse, every single stalk must develop into a productive ear, which requires earlier fertilization (EC 30). From EC 31 to EC 39 (flag leaf stage) the wheat consumes up to 5 kg N/ha/day.
The N-amount for the second application depends on the state of the crop, the quantities applied with the previous doses, the nitrogen content of the soil, the expected yield and the form of nitrogen. Basically the target is, to apply 110- 120 kg N/ha counting first and second spring application together.
Especially under those dry conditions we recommend the use of nitrate based granular N-fertilizers.
A more site specific recommendation can be obtained by using the N-Pilot. N-Pilot® accurately determines the nutritional status of crops and directly advises on the amount of nitrogen to be applied. Actual measurementsshow a current demand of around 60 kg N/ha for the second application.
Find more detailed information on the N-Pilot on this link.