Symptoms of vegetable deficiency in kidney beans

Nitrogen deficiency: poor plant growth, light green leaves, small leaves, lower leaves first aging and yellowing or even falling off, and then gradually moving up to the whole plant; few pods and poor pod growth and development.

Phosphorus deficiency: thick green, hard and dwarfed leaves in seedling stage, yellowing in lower leaves and small leaves in upper leaves in podding stage.

Potassium deficiency: in the early stage of bean growth, the leaf margin appeared slightly yellow, first leaf margin, then leaf vein yellowing, the order was obvious; leaf margin withered, leaves curled outward with the continuous growth of leaves, leaves slightly hardened, pods slightly shorter.

Calcium deficiency: the plant is short, premature and senile, the vegetative growth of the stem tip is slow; the lateral root tip dies, showing a verrucous protuberance; the veins of the top leaf are light green or yellow, the young leaves curl, and the leaf margin dies inward from the leaf tip and leaf margin after yellowing and chlorosis; the plant terminal bud is necrotic, but the old leaves are still green.

Magnesium deficiency: in the process of growth and development, the green between the veins of the lower leaves gradually turned yellow and developed further, except for the green residual points of the veins and margins of the leaves, and the veins were all yellowing.

Zinc deficiency: the median leaf begins to fade, and compared with the healthy leaf, the leaf vein is clearly visible; with the gradual fading between the leaf veins, the leaf margin changes from yellowing to brown; the internodes become shorter, the stem top is clustered leaflet, the plant shape is tufted, and the leaf blade curls slightly to the outside, does not bloom and bear pods.

Lack of shed: the growth point of the plant atrophied and became brown and dried up. The newly formed leaf buds and petioles are shallow, hard and easy to break; the upper leaves curl outward, and the leaf edges turn brown. When the upper leaf veins are carefully observed, there is atrophy and Lignification of the apple epidermis.

Iron deficiency: young leaves chlorosis between veins, showing yellow-white, when severe, the whole leaf turns yellow-white and dry, but does not show necrotic spots and does not appear death.

Molybdenum deficiency: poor plant growth, chlorosis of young leaves, yellow patchy mesophyll between leaf margin and vein, leaf edge curled inward, leaf tip atrophied, often resulting in plant flowering without pods.