Prevention and Control of nutrient deficiency in Cucumber

The common nutrient element deficiency in cucumber planting is potassium deficiency, magnesium deficiency and boron deficiency. The symptoms and control methods are as follows:

Potassium deficiency

A slight yellow flower appears at the leaf margin, then the leaf edge dies, and the leaf curls outward as the leaf grows.

Prevention and control methods: timely supplement of potash fertilizer, and then supplement potash fertilizer should be carried out at the same time as iron supplement.

Magnesium deficiency

The mesophyll between the veins of the lower leaves of cucumber gradually lost green and turned yellow, and further developed, except for a little green on the edge of the leaves, and in severe cases, the upper leaves also turned yellow from the inside.

Control methods: increase the application of organic fertilizer, formula fertilization, to avoid partial application of nitrogen fertilizer caused by soil acidity affecting the absorption of calcium and magnesium. When magnesium is deficient, leaves can be sprayed with 1% Mel 2% magnesium sulfate, etc., and pay attention to magnesium supplement combined with potassium supplement and zinc supplement.

Boron deficiency

When boron deficiency occurs, the growth point is necrotic, the floral organ is not fully developed, the leaves, stems and fruits stop growing, the leaf margin is yellowed, the yellowed part is wide, and there are cracks in the pericarp.

Prevention and control measures: increase the application of stable fertilizer, do not apply too much lime, reasonable watering. To supplement boron fertilizer in time, chelated boron series can be used to avoid soil damage caused by single application of borax fertilizer.