In case of heavy rainfalls shortly after fertilization with nitrogen, will the nutrients be washed out from the soil?
In case of heavy rainfall, the terrain and the intensity of the rainfall are important. High quantities of water in a short period of time will lead to erosion of the upper soil layers in slopy areas. Thus a certain kind of nutrient loss can occur. On even, flat soil conditions there is no loss of nutrients even if rainfall occurs after fertilization.
How high are the nitrogen losses after the application of UREA if there is no rainfall?
Within a few days of application, urea is converted with the help of the enzyme urease to ammonia and afterwards to nitrate. The conversion into nitrate is much faster in warm and humid soil conditions. During the conversion to ammonia as well as to nitrate, ammonia gas can escape in the air. The longer the conversion takes, the higher nitrogen losses, unless urea is incorporated into the soil. The losses can be 15% or more in such circumstances.
Which nitrogen fertilizer is recommended for the late fertilization of grain?
For late fertilization, it is recommended to apply quick-acting nitrate nitrogen, such as NAC. Timing is important in this case. During earing, the wheat plant is developing from growth stage EC 39 (vexillum fully developed) to EC 55 (middle of earing) very fast. Urea application should be done early, in the vexillum (= flag leaf) period, as urea needs a few days for conversion. However, applying NAC instead is more effective on both yield and protein content due to the fast efficacy of nitrate. If only protein should be influenced, an application of NAC is recommended shortly before earing.
Which nitrogen-form is recommended for the first spring fertilization of grain?
For the start into vegetation, it is important to provide quick-acting, water soluble fertilizers. At this point in time, soil temperature is still low, therefore nitrate nitrogen is preferred. The effect of urea during this period is too late and uncontrolled.
How much time should be left between liming and a nitrogenous mineral fertilization?
Gaseous nitrogen losses appear after a fertilization at pH-values higher than 9. Calcium carbonates have a pH-value of 7,5 maximum, which makes fertilization right after liming possible without any gaseous nitrogen losses. If water soluble burned lime is applied, either a soil preparation between liming and fertilization has to be done or some precipitation needs to collect.
Where can I purchase Borealis L.A.T fertilizer products?
Borealis L.A.T products can be obtained at our warehouses, from our trading partners and in different cooperatives. Please ask your local provider for Borealis L.A.T products.