b'Deficiency symptomsCrops on substrate can easily have calcium deficiencies.This can have a number of causes; there is too little calcium in the nutrient solution, calcium competes with other elements due to an incorrect ratio or coco substrate is insufficiently buffered. It is also possible that the root system has not developed properly, so there are too less hair roots that can absorb calcium.If the plant can evaporate little (passive absorption) and there is no plant activity due to low temperatures (active absorption), no or too little calcium will reach the strongly growing tissues such as leaves and fruits. Brown leaf tips are the result. This is called tip burn. The leaves warp and take on a bumpy appearance. Root growth lags underground.Because the plant cells do not grow well from the fruit, the seeds are closer together and the fruit size is smaller. Increased humidity or too much rain can also cause calcium deficiencies.Lack of calcium116'