How to choose which foliar fertilizer to spray ? What are the symptoms of fertilizer deficiency of flowers and trees? In order to do a good job of foliar fertilizer spraying, we must first determine which nutrient elements the flowers and trees lack in order to suit the remedy to the case.

The symptoms of nitrogen deficiency are: the plant is thin and weak, the leaf color turns yellow and green, the branches are thin and hard, and the growth is slow. Phosphorus deficiency is manifested as follows: the leaves change from dark green to pale green to purple copper color, the leaves are few and small, even withered in severe cases, and the veins (especially the petioles) are yellow and purple. Flower bud formation is difficult, flowers and small flowers are few, light color, fruit development is poor, fruit drop is serious.

potassium deficiency is manifested as: the plant is short, the stem is soft and easy to fall, the leaf is often wrinkled, the old leaf has dark brown spots along the edge of the leaf tip, the leaf is yellow around the leaf, the middle and vein are still green, and the fruit skin is thin and smooth. The manifestations of calcium deficiency are: tender leaves are green, wrinkled, new leaves are difficult to expand or distorted, leaves begin to fade from the edge, then extend to the veins of the leaves, and wither small spots, small fruits and deformities appear in the yellow area of the leaves.

Iron deficiency is characterized by thin new leaves, yellowing from the veins to the whole leaves, abnormal root development, dead branches and dull fruit color. Magnesium deficiency is manifested as follows: the mature leaves are parallel to the midrib, begin to fade green, expand again, fall leaves in severe cases, and the fruit is light in color. Boron deficiency is manifested as: the new petiole has small spotted water stains, translucent, flower and fruit drop serious, mature fruit deformity. Symptoms of sulfur deficiency are: yellowing of new leaves, especially smaller veins, yellow leaves, deformed fruits, and thick skin.

above is how to choose which foliar fertilizer to spray and the symptoms of lack of fertilizer in flowers and trees. I hope it will help you!