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.
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 sulphur is recommended for rapeseed?
A crop stand with a yield of 4 tons/ha takes up 32 kg S/ha via the corn, compared to the take-up of the entire plant of 56 kg S/ha. As sulphur is hardly provided anymore from the atmosphere and the mineralisation of sulphur takes place very late (around soil temperatures of 12 C°), a sulphur fertilization to the extent of 30 to 40 kg S/ha is recommended. Sulphur can be given with S-containing NPK fertilizers and N+S fertilizers, both in autumn and spring.
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.