First, the symptoms
Symptoms first appear in the upper leaves of the growing point of the plant. During onset, the leaves are distorted and shrunk. The petiole and veins are hardened and easily broken. The buds and young fruit fall off and the growth of the plants stops. This has a great influence on the flowering of the pepper. (Typical characteristics of the disease when it is diagnosed in the field are different from those of viral disease. The distorted and wrinkled leaves have no mosaic or yellowing phenomenon).
Second, the cause
The main reason is caused by the lack of boron in plants. Continuous cropping, greenhouse cultivation of multiple physiological diseases, soil acidification, boron is a large number of loss, or excessive application of lime are likely to cause boron deficiency. The soil is arid, organic fertilizer is used less, and boron deficiency is also likely to occur under high temperature conditions. Excessive application of potash will also inhibit the absorption of boron by plants.
Third, control methods
1. Adding organic fertilizers: In particular, we need to apply more compost to produce more manure. The manure fertilizer contains more boron, and it can fertilize the soil, enhance the ability to retain water and fertility, reduce drought damage, promote root expansion, and promote the absorption of boron by plants. Prevent soil acidification or alkalization.
2. Soil improvement: Once the soil is acidified or alkalized, it needs to be improved. To strengthen management to prevent soil from drought or excessive humidity, otherwise it will affect the absorption of boron in the root system.
3, increase boron fertilizer: When the symptoms of boron deficiency, should be promptly sprayed to the foliage 0.1%? 0.2% borax solution, once every 7? 10 days, continuous spray 2-3 times. Can also be applied per acre borax 0.5 ~ 0.8 kg watering.
For the most common waxy and sweet corn on the market, waxy corn has a higher nutrient content than regular corn, containing 70-75% starch (and almost all straight-chain starch), more than 10% protein, 4-5% fat and 2% multivitamins, with more grains, VA, VB1 and VB2 in protein than rice, with the highest fat and VB2 content. Yellow maize also contains carotenoids, such as rice and wheat. The molecular weight of waxy maize starch is more than 10 times smaller than that of ordinary maize, and the starch makes glutinous rice sticky and soft, softer than ordinary hard maize. It is more than 20% more digestible to eat than regular maize and it is suitable for people with less than perfect teeth. At the same time, it is not suitable for diabetics because of the very high content of straight-chain starch (a polysaccharide).
Waxy maize is also known as sticky maize. The grain has coarse, waxy endosperm, similar to shiny, glassy (clear) grains such as hard and dent maize. Its chemical and physical characteristics are controlled by a recessive gene, which is located on chromosome 9. 100% of the starch in the endosperm is straight-chain starch.
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