After a winter marked by significant rainfall, some cereal fields are showing worrying signs of yellowing. Should nitrogen be applied immediately? Not necessarily. Before any intervention, it’s essential to adopt a suitable strategy to effectively revive soil activity and support vegetative growth. Discover our tips for ensuring a successful start to your crops.
Cereals: why are the plots turning yellow?
Some plots may show signs of waterlogging following heavy rainfall. The plants then exhibit yellowing due to root asphyxiation and therefore difficulty absorbing mineral elements such as nitrogen . It will be necessary to wait for the soil to dry out completely and for vegetation to resume growth to determine if these areas are actually affected by a nitrogen deficiency.
In cases of soil asphyxiation, air circulation in the soil decreases and the activity of microorganisms is reduced. As a result, nutrients are no longer available to the plant. This can lead to a decrease in available nitrogen…
At these times, any application of nitrogen fertilizer is futile or even useless at this stage.
=> It is best to support the plant and restore its ability to assimilate nutrients.
SILIBOOST and SOUFREL: effective solutions to help the plant restart
SILIBOOST helps to oxygenate the soil
Application : 1 application at 250g/ha as soon as possible after the rainy period. SILIBOOST can be applied simultaneously with the herbicide in a mixture.
=> Promotes the resumption of biological activity, improves structural stability. Promotes root development and increases tillering in your cereals and the assimilation of mineral elements.
SOUFREL Granules: Natural elemental sulfur from quarries (non-petrochemical)
This product provides a slowly absorbed and non-leachable form of sulfur in the soil, making it a perfect fit for a long-term sulfur fertilization strategy. Sulfur is a fundamental element for plants; it contributes to better nitrogen utilization and is a key factor in crop yield and quality.
Effect on thousand grain weight (TGW) and number of grains in an ear; Effect on ear length and diameter (Szulc et al, 2008)
=> Combining with SILIBOOST is recommended to activate the bacteria that will transform elemental sulfur into a sulfate form that the plant can assimilate through oxidation.
Our advice: Starter program for cereal grains
Foliar nutrition
An application of YAKASTART at 10L/100L water/ha can replace the first nitrogen application if the residual nitrogen at the end of winter is at least 40 units of N/ha. It works by increasing the release of nitrogen from the organic matter present in the soil.
Observed visual effect: Crop turns green in 48 hours
