How Cotton Seedlings Avoid Natural Disasters

During the period of cotton sowing and nursery, it is often encountered that some farmers use the cotton seed bags they have purchased to find dealers who sell the cotton seeds. They say why the cotton varieties sown at the same time have emerged, and some have not emerged. High seedling rate and low seedling rate? Requires compensation for non-emerging cotton seed and low-yielding cotton seed, and cotton seed dealers are also struggling with this. The use of nutrients to protect the seedlings of cotton seedlings, but also because of the emergence of seedlings but more deadly contradictions. The reason is nothing more than natural and man-made disasters.

According to many years of observations, the accumulated temperature of the cotton seeds sown to the emergence of the need for 80 °C ~ 100 °C, cotton seed germination need to absorb 60% ~ 75% of cotton seed weight of water. In the practice of field cotton production, in some places in the nutrient incubation, the sowing date is advanced to mid-to-late March. The watering on the seedbed is also insufficient. Due to insufficient accumulated temperature and insufficient moisture, the emergence of cotton often delays, or the emergence does not occur. Neat, or dead, low temperature is the main constraint, blind early broadcast is caused by human. At the same time, different cotton varieties have different requirements for accumulated temperature and moisture, and those that are less sensitive to temperature and moisture requirements can emerge earlier, and the emergence time for high temperature and moisture requirements is relatively late. Therefore, they cannot be used earlier. Varieties easily negate the emergence of late varieties. Farmers’ friends cannot make claims because of the late emergence of varieties. The correct seeding period should be after the atmospheric temperature stabilizes after passing 16°C, this time generally in mid-April. Watering at the time of sowing should allow the cotton seeds to absorb more than 70% of the body weight of the water, that is, to the seedbed to slowly penetrate the water.

Cotton seedlings that are prone to happen on seedbeds generally have diseases, insect pests, phytotoxicity, fertilizer damage, frost damage, waterlogging, and high temperature burns.

Diseases such as blight, anthrax, and damping-off disease can easily cause cotton seedlings to die. Although most types of coated cotton are now used for disinfection, pathogens in the soil often spread diseases. Before and after the seedbed is sowed, the nutritious bauxite and covered fine soil must be disinfected to prevent the invasion of soil-borne diseases. One can use 2.5% Siyue seed coating agent 10 ml watered 5 kg, pour 10 square meters seedbed, or use 10 ml watered 10 kg sprayed at the seedling stage; 2 available badewing 30% water agent 1000~ 1500 times the liquid spray or rooting at the seedling stage; three with carbendazim or thiophanate-methyl spray; four can be used to disinfect the fertilizer soil with Jiastun cotton soil nutrients, 5 kg per mu plus 1 to 1.5 kg Multiple compound fertilizer.

Insect pests are mainly tigers and locusts. Aphid is very easy to control, underground pests such as ground tigers, a available Tering granules 400 to 600 grams, mixed soil to do é’µ2500 to 3,000; 2 can be used Cabernets 40% EC 1000 times in the seedling spray.

One of the phytotoxicity is that the selected drug is not the right way, and the second is that the drug concentration is too large or repeated at the same time, will cause burns and scorch of cotton seedling leaves, and some even die, which requires the selection of pesticide species on the road, according to dose medication.

One of the reasons for fertilizer damage is that if the amount of base fertilizer is too large, it will cause fertilizer damage. Second, if the amount of top dressing is too large, it will also cause fertilizer damage. With light weight, the leaves of cotyledons and new leaves become scald like boiling water, and the serious leaves die. For the injury and damage of fertilizers, in addition to increasing the concentration of liquid and fertilizer solution in the seedbed, 800 to 1000 times of Huimanfeng active liquid fertilizer can be used to ease the harm of pesticides and damage, and make cotton seedlings as soon as possible. Restore growth.

Frost damage is caused by the poor thermal insulation performance of plastic micro-membrane and old membranes; second, frequent removal of membranes at low temperatures; and third, premature release of membranes. The most obvious manifestation of freezing injury is that the new leaves resemble locusts and they are difficult to spread, affecting photosynthesis. In order to preserve the seedlings by heat preservation, one must use a good thick film; second, it is not easy to uncover the seedlings; the third is to insist that the seedlings are not transplanted and the film does not leave the bed.

Waterlogging often causes juvenile roots to become dark. A drainage ditch should be opened around the seedbed. The water can be drained by clear water and the dark water can be filtered to promote root hair growth.

High temperature burns the high-temperature injury seedlings, when the average temperature of the weather exceeds 23°C, the temperature in the membrane reaches above 45°C, which can easily burn the cotton seedlings and even cause the cotton seedlings to die. Therefore, when the average temperature of day and night exceeds 19°C, the film should be exposed day and night.

Antifungal drug: A drug used to treat fungal infections(antimicrobial drugs).

Examples of Antifungal Drugs include miconazole and clotrimazole.

An antifungal medication is a pharmaceutical fungicide used to treat and prevent mycoses such as athlete's foot, ringworm, candidiasis (thrush), serious systemic infections such as cryptococcal meningitis, and others. Such drugs are usually obtained by a doctor's prescription, but a few are available OTC (over-the-counter).




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