Plant tissue test

The nutrient content of a plant can be assessed by testing a sample of tissue from that plant. These tests are important in agriculture since fertilizer application can be fine-tuned if the plants nutrient status is known. Nitrogen most commonly limits plant growth and is the most managed nutrient. Most useful times Tissue tests are almost always useful, since they provide additional information about the physiology of the crop. Tissue tests are especially useful in certain situations; For monitoring the nitrogen status of a crop throughout the growing season. Soil tests are commonly performed before planting. In highly controlled environments, such as hydroponic production in greenhouses, crops require a constant feed of nutrients in their water supply. Even a transient lack of nutrients can reduce yields. Soil testing results cannot reveal actual nutrient uptake and nutrient mobility. Soil tests may be insufficient to manage crop nitrogen status. Soil testing may be more suitable when growing crops in slow-release composts and manures. When there is a risk that a nutrient application blocks uptake or unlocks mobility of other nutrients. In over application this can lead to toxic