Gardenia and green radish... yellow again? Learn 2 moves
Spring is the peak season for plant growth, but many flower lovers find that yellow leaves frequently appear in green plants at home. This article focuses on five common family green plants such as gardenia and green radish, deeply analyzes the causes of yellow leaves and provides professional solutions to bring your green plants back to life. Causes and countermeasures of yellow leaves of gardenia and root rot caused by accumulated water. The root system of yellow-leaf gardenia is extremely sensitive to water. If accumulated water exceeds 2 hours, root rot may occur. Monitoring through a soil moisture detector, water when the top 3 cm of soil is dry. It is recommended to use clay pots combined with pine needle soil (accounting for 40%) to enhance drainage and breathability. Iron deficiency syndrome The pH value of water quality in northern China is generally>7.5, which can easily lead to soil alkalization. Use iron chelate fertilizer (EDTA-Fe) instead of ferrous sulfate every month for greater stability. Use fermented peel water (diluted 50 times) to adjust the soil pH, and the effect will be more lasting. Guidelines for the prevention and control of green radish yellow leaves The scientific water control methodology uses the "fingertip detection method": the index finger is inserted into the second knuckle of the soil to feel the moisture. Maintain the principle of "seeing dry, seeing wet" in spring and autumn, and use an automatic drip irrigation system in summer to maintain the substrate humidity at 60%-70%. In addition to rice washing water, the entire nutrient supply plan recommends using water-soluble fertilizer with N-P-K=20-20-20, which is sprayed on the leaves every 10 days. Major findings: Adding 0.1% brassinolide increased nutrient absorption by 38% and thickened leaves by 17%. The three elements of environmental control maintain the temperature difference between day and night of less than 8℃, maintain the air humidity at 55%-75%, and control the light intensity at 10,000 - 15,000 Lux. Use temperature and humidity meter + illuminance meter to monitor in real time and manage the maintenance environment digitally. The disease prevention system uses 1000 times of Bacillus subtilis (10^8 CFU/g) to irrigate roots every month, and the effect of preventing root rot is 92%. Alternate spray mancozeb and difenoconazole on the leaves to establish a three-dimensional protective net.
Through systematic diagnosis and precise intervention, more than 90% of yellow leaf problems can be improved within 7-10 days. It is recommended to establish a plant health file to record each maintenance data to achieve scientific green plant management.