Corn growth periods SYMPTOM identify and remedy

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/2016-08-13
/By Huifeng Runda

Corn growth periods SYMPTOM identify and remedy

Corn is required in the production of large amounts of potassium, potash sensitive crops, rational application of potash is the necessary measures to corn yield. Some land, due to the complexity of the situation in the field, easily overlooked when mild symptoms, severe symptoms you may also be misdiagnosed as drought. In order to facilitate observation in the field and identify the symptoms of potassium deficiency, the following will introduce several apparent recognition potassium disease process in accordance with Maize Growth Stage:
1. The key observation of seedling seedlings color and growth rate. When the soil for the emergence of body strength is not enough potassium potassium concentration is not high, not only slow down the growth rate of the seedlings, and maize leaf area smaller, dark green leaves will appear blue or green, which is due to potassium deficiency leads to reduced cell size leaf tissue chlorophyll density of sake.
2. windy days to a corn field observation, we can see some land plants upright, and some land plants obviously depressed, vane begins at 9 am Danian, why the same weather and some wilting phenomenon? In fact, corn is a typical symptom of potassium! Description of these plots of soil for potassium deficiency, especially Potassium Supplying insufficient strength. This physiological role of potassium nitrogen and phosphorus can not be replaced.
3. After entering the Maize rapid growth phase, symptoms of potassium deficiency is the leaf blades brown spots, severe margin was Kujiao shape. From the whole plant, the first in the old leaves appear chlorosis and necrosis, as the old leaves mature potassium deficiency symptoms will gradually develop to the central blade serious, mature leaves from the tip and edges of chlorosis, first speckled, then even into a film. When the potassium level continues to grow in the tip and leaf margin necrotic spots, margin dry, scorched into shape, the farmers called “coke side,” which is typical of potassium deficiency symptoms.
4. Change potassium plant stem is shorter internodes, stem becomes thin and soft. The reason is that the formation of the active layer is reduced, the role of vascular lignified weakened, which is easy to potassium deficiency causes corn plants lodging reason.
When you find the corn farmland have potassium deficiency symptoms, in addition to the consequences directly affect the yield, but also corn susceptible to disease and reduced quality. This should take timely remedial measures, the easiest way is applying potassium fertilizer, potassium post-measures. After the large bell or corn, plant height stereotypes, started spinning, seize Potassium Fertilizer per acre applied as appropriate, from 4 to 8 kg of potassium chloride. The method can be applied fertilizing or banding casing, and combined with water.