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What to Do When Wheat Seedlings Turn Yellow? Common Causes and Control Methods
When wheat grows into the winter and spring seasons, the seedlings often turn yellow or even die, and applying fertilizer alone cannot make them turn green again. There are several types of yellowing in wheat seedlings, and if remedial measures are not taken in time, they can cause serious reductions in wheat yield. Yellowing from pests: yellowing of leaves caused by wheat aphids and wheat mites sucking leaf sap, occurring mainly around the overwintering period. Per 667 sq m, use 65-75 ml of 40% omethoate emulsifiable concentrate mixed with 50 kg of water for spray control. Yellowing from disease: wheat sheath blight damages
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Ten observations for silkworm disease prevention and control: remember these ten key points when raising silkworms
1. Observe the development of the colony. When the ants are collected, the hatching is uneven, the ant silkworms are uneven in size, with big heads and small tails, spin a lot of silk, and crawl around the rearing seat, indicating a weak constitution. During rearing, touch the silkworm body with your hand or lift the silkworm up; if the silkworm contracts and resists, it is healthy; if it has no reaction, it indicates a weak constitution. In the large silkworm stage, touch the silkworm body flatly with the back of your hand; if it feels cold, it is a healthy silkworm; if it feels damp and hot, it indicates that the constitution is not strong. 2. Observe the posture before and after molting. When a healthy silkworm is about to molt, its head and thorax are raised, and molting is uniform. If it does not enter sleep for a long time, and after entering sleep its head
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What to Do When Cotton Is Flooded? Waterlogging Rescue Methods During Great Heat
Minor Heat and Great Heat fall in July, the hottest month of the year. Do a good job in flood control, heat prevention and drought resistance; harvest early rice in a timely manner; apply tillering and ear fertilizer to mid-season rice; carry out intertillage and soil loosening, topping, and flower fertilizer application for cotton; and control pink bollworm and cotton bollworm. Sow late-autumn crops in a timely manner. Ensure good ventilation and cooling for livestock and poultry pens to prevent heatstroke in people and animals. Most cotton fields in our province are currently in a state of hidden waterlogging. This is currently the most critical period for cotton's transition from vegetative growth to reproductive growth, and also the most critical period for the increase of cotton buds and bolls. Emergency management measures must be taken immediately.
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Eight requirements to note when using a precision dibble seeder on cotton mulched film
In 2005, our regiment introduced 1 unit of the 2BMJ-12 precision dibble seeder on cotton mulched film produced by the Shihezi Agricultural Machinery Research Institute, and that year trial-sowed 30 hectares. The application of precision dibble sowing technology on cotton mulched film saved costs on seed and manual thinning, and at the same time had advantages such as simple mechanical adjustment and operation, stable performance; and after sowing, the cotton seedlings grew uniformly and neatly. The eight requirements to note when using this machine are introduced below. 1. Requirements for land plowing quality: plow when soil moisture is suitable, plowing depth reaching 28-30 cm, with consistent plowing depth;
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What should be noted when keeping clownfish in a mixed tank?
Clownfish belong to the damselfish family (Pomacentridae), and they all have rather aggressive temperaments, especially showing hostility toward newly introduced fish of the same kind. Mixed keeping is not a problem, but the following conditions are required: 1. Several fish should be introduced into the tank at the same time, with the time interval kept as short as possible, and the smaller individuals introduced before the larger ones. 2. There should be a large number of sea anemones (carpets) in the tank; for three kinds of fish, at least three sea anemones (carpets) are needed. 3. The tank must be large enough, and the sea anemones (carpets) should be distributed evenly. The above three points only help avoid fights among them as much as possible, but they cannot
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What quality indicators must pear nursery stock meet when leaving the nursery?
Pear nursery stock grading indicators Grade Item Grade 1 Grade 2 Cultivar and rootstock type Pure and true Roots Number of lateral roots More than 4 More than 3 Main root length More than 10 cm Lateral root length Not shorter than 15 cm, spreading Stem Rootstock stem section length Less than 10 cm Height More than 130 cm More than 100 cm Thickness (at 5-10 cm above ground) More than 1.2 cm More than 1 cm Rootstock treatment The rootstock stub must be cut off, the rootstock has no injury Union healing degree Completely healed Number of plump buds within the shaping zone More than 6 Note: Annual nursery stock yield per hectare below 150,000 plants. In the Beijing area, the pear rootstock should be Pyrus betulifolia or Pyrus ussuriensis.
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4 Things to Note When Introducing Pet Rabbits
As the pet rabbit market grows increasingly prosperous, more and more people are introducing pet rabbits, but all kinds of problems have followed. Some people spend a lot of money to buy so-called pet rabbit breeding stock, only to find that when the breeding season arrives, the rabbits do not come into heat. After inquiring carefully, they learn that the rabbits have been sterilized and simply cannot reproduce, so half a year has been wasted for nothing. Some buy rabbits home but the rabbits cannot survive at all, because no breeding techniques were provided, and they just feed them like ordinary rabbits. The result is that the sudden change in living conditions, combined with the abrupt switch in feed, causes the young rabbits to fall ill and die one after another.
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Special attention must be paid to preventing coccidiosis when raising rabbits in summer
Rabbit coccidiosis is one of the most common and most harmful diseases of domestic rabbits. Rabbit coccidia are single-celled protozoa that parasitize the liver, bile duct epithelial cells, and intestinal epithelial cells of rabbits. When coccidia parasitize the body, the rabbit becomes emaciated, anemic, has rough fur, and its development stalls, ultimately leading to death. This disease has no obvious seasonality and can infect and cause illness throughout the year, but it occurs more frequently in the hot and humid seasons of summer and autumn, and its distribution and prevalence are extremely widespread. To prevent coccidiosis: 1. Maintain the sanitation of the rabbit hutch, frequently disinfect the cages and
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Three major pitfalls to avoid when buying Phalaenopsis seedlings
It is once again the selling season for Phalaenopsis seedlings, and according to consumption habits in China, the peak sales period for finished Phalaenopsis plants is concentrated just before the Spring Festival. Therefore, the Phalaenopsis seedlings that producers buy at this time are basically 2.5-inch intermediate seedlings; that is, calculated according to the normal growth cycle of Phalaenopsis, seedlings of this size are exactly able to bloom and go on the market before next year's Spring Festival. However, quite a few producers have experienced this awkward situation: they clearly bought 2.5-inch seedlings, yet the plants failed to bloom on schedule. They suspect something went wrong with the seedlings, but the seedling supplier says it was the producer who
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What to Do When a Phalaenopsis Orchid Gets Gray Mold? Symptoms and Control Methods
Gray mold is one of the most common diseases in Phalaenopsis orchid production, occurring frequently during their growing season, especially during winter and spring greenhouse cultivation, and the pathogen can infect any part of the plant. If cultivation management is neglected, it further favors the occurrence and spread of the disease, and in severe cases can cause a large number of fallen flowers and leaves, not only affecting the plant's blooming but also directly reducing the ornamental value and yield of Phalaenopsis orchids. (1) Conditions for Onset Warmth and humidity are the main conditions for the spread of gray mold in Phalaenopsis orchids. That is, when relative humidity is around 90% and temperature is
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