Occurrence and comprehensive control technology of watermelon soil-borne diseases
How to Select the Best Grow Light for your Greenhouse?
What' the best indoor led grow light ?The definition of Philizon :
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Full Spectrum Indoor LED Grow Light and High PAR
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Our professional full spectrum Indoor LED grow light are suitable for all the indoor plants and good for seeding, growth,flowering and fruiting stages of plants, increasing the harvest and Saving energy.
Philizon Indoor LED Grow Lights by Light Efficient Design provide growers a better solution for reliable and effective agricultural lighting. Light Efficient Design has been making LED retrofit lamps for over six years, and has a strong product lineup, proven designs, and excellent reliability. And now, our energy-efficient, money-saving products are helping to promote success in indoor farming and commercial greenhouses.
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First, the types of soil-borne diseases. The soil-borne diseases of watermelon mainly include rickets, blight and blight.
Second, the characteristics of soil-borne diseases:
1. The place where the bacteria pass the winter. It mainly overwinteres in soil, sick bodies and manure.
2. The way of spread of germs. In a suitable environment, germs can be transmitted through rain, watering, farm implements, and composting.
3. Pathways for pathogen invasion. Invasively through the root wound or from the apical cells of the root hair. Therefore, there are many underground pests or heavy melons, and the occurrence of blight is also serious.
4. The main conditions of the onset. The degree of the disease mainly depends on the amount of bacteria invaded in the same year, and the base of the bacteria is high. Generally, the incidence is heavy. According to the district and county census results, the incidence rate of diseased plants in the first year is 0-2%, the second year is 10-20%, the third year is increased to 30-50%, and the incidence of some fields in the fourth year is 70%. Some fields are close to being rejected. In addition, excessive nitrogen fertilizer, insufficient phosphorus and potassium fertilizer, application of organic fertilizer with insufficient maturity, production with rainy days, heavy rainfall and soil weight, low terrain, poor drainage, extensive management, poor development of watermelon roots The incidence is heavy.
Third, comprehensive prevention and control technology. Adhere to the principle of agricultural prevention and control, supplemented by chemical control. Take comprehensive control measures that combine rotation, rational fertilization, grafting disease prevention, field management and chemical control.
1. Agricultural control
(1) Rotation for disease prevention. It is used for more than 3-4 years of rotation with other crops (non-melon) to worsen the living environment of the pathogen and control the number of pathogens. Among them, water and drought rotation is more effective in controlling Fusarium oxysporum.
(2) Using solar heat to kill germs. The amount of base fertilizer and lime nitrogen required per acre is sprinkled on the soil surface, ridged, watered, and shackled with polyethylene film for 15-30 days. The soil moisture content during disinfection is maintained at more than 60% of the field's saturated water holding capacity.
(3) Strictly choose nutrient soil. Do not use vegetable garden soil, melon soil and garden soil to raise seedlings.
(4) Select resistant varieties. Excellent varieties with good disease resistance, high yield and excellent quality can be selected.
(5) Seed treatment. The seeds are soaked in warm water at 55 ° C, and the seed epidermis is wiped off to reduce the seed carrier rate.
(6) Reasonable fertilization. Reduce the amount of nitrogen fertilizer, increase the application of phosphorus and potassium fertilizer, especially potassium fertilizer, and avoid the application of chloride ion-containing fertilizers such as ammonium sulfate and potassium chloride. The base fertilizer is mainly organic fertilizer, and the unfertilized fertilizer that the sick body is smashed is prohibited.
(7) Strengthen field management. The cultivation of deep sorghum sorghum is adopted, and the interface between the shed film and the ridge is kept lower than the lining of the shed. The gully inside and outside the shed should be unblocked, and the drainage should be timely after the rain; the watering should be carried out in the sunny morning, avoid flooding and strict control of the shed. Temperature and humidity. In addition, it is necessary to remove the weeds in the field in time, and find that the diseased plants should be removed in time and brought out for field treatment.
(8) Grafting and disease prevention. Conditional areas and farmers can use the gourd as a rootstock for grafting, which can effectively reduce the occurrence of blight. According to the test, grafting can reduce the incidence rate by 56.2%, and the control effect can reach more than 90%.
2, chemical control
(1) Bed soil disinfection. Apply 50g of seed dressing double powder to 7g, or 40% of pentachloronitrobenzene powder per square meter of seedbed, or 40g of 40% of glutinous WP, mix well with 4-5kg of fine soil, apply Before the medicine, the bottom water of the seedbed is beaten first, and once poured, after the water seeps, 1/3 of the soil is sprinkled on the surface of the loquat. After sowing, the remaining 2/3 of the soil is covered on the seed, which can be prevented. Stumbled over.
(2) Field control. Prevention and control of Fusarium wilt: In the early stage of the disease, the effects of controlling the wilt disease of watermelon were better. Method 1: 40% sputum sputum WP WP 600-800 times solution, foliar spray at the beginning of the disease, the control effect is 71.2-82.4%. Method 2: Spray 15% of the mildew water agent 450 times solution at the initial stage of the disease, 3L per square meter, and the control effect is 70.1-80.3%. Method 3: 4% agricultural anti-120 water agent 300 times liquid once rooting (0.5 kg liquid per hole), the control effect is 50.2-70.4%. Method 4: Rooting with 0.5% cucurbitin 600 times solution (0.5 kg liquid per hole), the effect is 61.7-75.6%.
The plant needs light to thrive cause the light is essental for photosynthesis.without it,plants can not make food.but light can also be too intense,too hot or last too long for growing healthy plants.plant growth accelerates with abundant light because more of the plant`s leaves have exposure,which means more photosynthesis.in the winter,days are not long enough,but many plants still need 12 hours or more of light per day.
Now,adding LED Grow Lights to your greenhouse is an nice choice if you live in the north, and can not get enough daylight in winter.you might be take HID into consideration,cause it has high output and cover a wide area.but now,we providing you some dfferent.the newest type of grow lights use LED technology.
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using high quality lense that hyper-focus the lights on your canopy.the photons are beamed directly to the plants.this gives growers the ability to get greatest possible crop yield.
Reduce your costs with energy efficiency
energy-efficient cannabis grow lights cost between 40%-60% less to operate compared to HID lam year.
Led grow light also eliminate the needs for ballasts and reflectors while they minimize the cooling systems,accelerating your payback.you will see the electrical bills trimmed by approximately half,year after year.
Installs and operates simply
the input voltage is AC100V-240V,fit for the world standard,built-in power supply.do not need other equipment,just access to the Plug,the lamp will be work smoothly. The led grow lighting is small size,just few inches and easy to install.it is the good option for some greenhouse.
Long lifespan
using built-in quiet fans and the shutter in the wind,induced draftfrom all sides.runs with quiet. Useadvanced isolation power supply and soft start protection technology, to prevent the high voltage when turn on the light from damagingthe lamp body.
Safe and Reliable(Meet the safety requirments around the world)
Effective(Good efficacy for the plants)
Energy Conservation(High efficiency and high PPFD in same power)
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Features
- Water-cooling design, 20°C+ lower than fan-cooling design
- Vac100-265 universal input voltage
- Advanced secondary optical lens design for penetration
- Smart over-heat protection system
- Product designed to ETL standards
- Completely noise-free with water-cooling system
- Effectual spectrums proven by professionals
- Quick slide-into-track system to combine two or more LED fixtures together
