What about the yellowing of pineapple leaves? 7 common reasons need to know / attach solutions.

In the process of planting a plant, there are many factors that affect its growth, such as the leaves may turn yellow when we are not watered properly, the roots may rot when the water is stagnant for a long time, and so on. So we need to use the correct method of planting pineapple to avoid this situation, but what if the pineapple leaves turn yellow? Let's take a look at common causes and solutions.

What if the pineapple leaves turn yellow?

1. Excessive water: the root of pineapple is afraid of water dampness, because it belongs to taproot flowers, if the root of excessive water is very easy to rot, the main reasons for excessive water are too much watering, poor drainage in rainy season, and so on. The solution is to irrigate the right amount, good soil drainage, and pay attention to waterlogging prevention on rainy days.

2. Lack of water and drought: raising pineapple can neither excessive water, nor make it lack water during its production, because its growth and flowering are inseparable from the absorption of water. If it is short of water for a long time, the water in the plant will be consumed, and the old leaves will turn yellow and fall. The solution is to water reasonably. You can refer to the detailed description of how to water pineapple.

3. The sun is too strong: although pineapple likes the sunny environment very much, and it is also a plant native to the tropics, the summer temperature in many parts of China is getting higher and higher, especially the sun is very strong in midsummer. But when the sun is too strong, the leaves of pineapple may also be yellowed. What about the yellowing of pineapple leaves caused by this reason? The answer is proper shading at the height of summer.

4. lack of light: most plants like places where there is plenty of light, and pineapple is no exception. if you put it in a place where there is often not too much light, its leaves will not only turn yellow and fall off, but also curl and atrophie. so usually avoid putting it in a dark place.

5. The temperature is too low: pineapple likes heat but is afraid of cold, and its cold tolerance is very weak. once it is planted, the temperature is below 10 degrees and no heat preservation measures are taken, its leaves and plants are likely to be frostbitten. If it is caused by this reason, you need to remove the yellow leaves, and then quickly put the pineapple in a warm place to manage.

6. Lack of fertilizer: pineapple has little demand for fertilizer, but it should not be completely without fertilizer, let alone nitrogen or phosphorus fertilizer. If there is a lack of fertilizer, the new leaves may turn yellow and may grow steeply. The solution is to topdressing once every 2-3 weeks, while paying attention to nutritional balance.

7. Diseases and insect pests: when powdery mildew, leaf spot, aphids and beetles harm pineapple, it may cause its leaves to turn yellow, and it will not only cause disease spots on the plant, but also cause plant wilt and death. therefore, we must do a good job in prevention and treatment, and its methods have been introduced in detail in pineapple pest control.

Conservation of pineapple flowers

1. Soil: pineapple has relatively low requirements for soil, and most of the soil is suitable for planting, but it is best to choose fertile and loose rotten leaf soil, and it is more appropriate to choose soil from the place where solar energy is irradiated. These soils will be more healthy and safe and less prone to germs.

2, fertilizer water: the first watering must be thoroughly watered, and then put it in a semi-shady place to maintain for 5-7 days, do not apply fertilizer at this stage, wait until it begins to grow again after a week, and then apply liquid fertilizer once in 3-4 weeks. Usually watering should be based on the wetting condition of the soil, and so the soil is dry and watered thoroughly each time.

3. Temperature and light: pineapple likes a warm environment and is afraid of the cold, so avoid being in a lower temperature environment. In the pineapple planting method and attention, light is very important, in the growing period to let it enjoy plenty of sunshine.

What about the yellowing of pineapple leaves? how to deal with it?

First understand pineapple habits, like light, like warm and humid environment, grow in an area of 0 to 2500 meters above sea level, not cold-resistant, can be self-sowing (generally introduced by artificial cultivation), requiring fertile soil. If not handled properly, pineapple leaves will be affected, and it is common to affect the yellowing of pineapple leaves.

The reason for the yellowing of pineapple leaves

Yellowing of pineapple leaves: soil problem

Pineapple is not strict with the soil, but the soil does not meet the needs of its growing environment, and it will make the leaves yellow and flowers few.

Pineapple leaves yellowing: improper watering

Too much or too little watering will affect the growth of pineapple. Too much leads to stagnant water, rotten roots and leaves yellow, and too little leads to evaporation without water supply, aging, yellowing or even shedding of leaves.

Pineapple leaves yellowing: diseases and insect pests

Often have leaf spot disease, powdery mildew disease harm, cause pineapple leaves to turn yellow.

Yellowing of pineapple leaves: lighting problems

Sun exposure can easily cause scorched leaves or yellow leaves of pineapple. Lack of light, pineapple growth is poor, there will also be yellow leaves.

Pineapple leaves yellowing: lack of fertilizer

Pineapple growth is a higher requirement of fertilizer, we should apply sufficient base fertilizer, if the base fertilizer is not enough, the leaves will turn yellow.

Pineapple leaves yellowing: temperature

Pineapple is warm and not cold-resistant, and the temperature of its growth should not be too high or too low, otherwise it is easy to turn yellow or even die.

How to deal with the yellowing of pineapple leaves

Soil selection

Pineapple is suitable for growing in loose and fertile sandy soil. Rotten leaf soil and garden soil can be used to cultivate soil, and some nitrogen, phosphorus and potassium compound fertilizer can be added as base fertilizer.

Rational watering

Generally watering once a week, depending on the growth condition, you can decide whether to increase watering. On the whole, keep the basin soil moist without stagnant water.

Prevention of diseases and insect pests

Pineapple can be sprayed with 500 times of 50% Taub wettable powder when it occurs.

Control lighting

Usually maintain pineapple, to ensure adequate light, in summer when the sun is too strong to pay attention to shade, can be placed in a well-ventilated and cool place.

adequate manuring

Pineapple should be planted with a certain amount of base fertilizer, and then it can be topdressing once a month, and once every 15 to 20 days when there is no base fertilizer.

Temperature control

When the summer temperature is too high, the prize pineapple is transplanted into a cool place in the room and properly sprayed with water to cool down the leaves. When the temperature is low in winter, it should also be transferred indoors to ensure the indoor temperature.

Control methods of common diseases and insect pests of pineapple, powdery mildew / leaf spot / aphids / beetles

Although pineapple is very tenacious in vitality and has a strong ability to adapt to the environment, in the process of planting, pineapple is sometimes infected with diseases and insect pests because of negligence in management, sudden changes in the environment, and so on. Once the consequences are unimaginable, here the editor will tell you a few common pest control methods to avoid tragedies.

Prevention and control of common diseases and insect pests of pineapple

1. Leaf spot

The main symptoms: pineapple leaves appear black-brown disease spot, the disease spot on the stem and petiole is long strip, the color is brown, at first small but will continue to expand, and finally become irregular, the disease spot will also produce wheel patterns, resulting in leaf withering, yellowing, plant growth weakening.

Prevention and control measures: usually pay attention to pruning to ensure that the density of branches and leaves of pineapple is moderate, increase the ventilation of the environment, and reduce air humidity. After the onset of the disease, it was sprayed with 38% cuproloxil 800-1000 times and 50% topiramate 1000 times.

2. Powdery mildew

Main symptoms: yellow dots appear on pineapple leaves, these dots will gradually expand and develop into round or oval, there will be a white powdery mildew layer on the surface of the disease spot, and usually the lower leaves suffer more seriously. as the leaves are covered with powder, resulting in the lack of photosynthesis, decline will be earlier.

Prevention and control methods: among the common diseases and insect pests of pineapple, powdery mildew is relatively easy to prevent. the law of its incidence is excessive application of nitrogen fertilizer, excessive density of branches and leaves, opaque light, and so on. Avoiding these two situations can well prevent powdery mildew, and when the disease occurs, it is necessary to spray with 1000 times of trimethoprim.

3. Beetles

The beetle is a kind of pest with many kinds. It will eat the root and stem of the pineapple, causing damage to the underground part, especially in the process of reproduction, which is easy to be invaded by the beetle, resulting in a decline in the success rate of reproduction. In addition, it may also harm the leaves, flowers, fruits and so on.

Prevention and control methods: choose good and robust pineapple varieties when planting, usually do a good job of environmental hygiene, ensure that the air humidity is moderate, the temperature is not too high, and let pineapple receive sufficient light at the same time. After the onset of the disease, the beetle can be sprayed with 2500 times of deworming essential oil.

4. Aphids

Aphids are very small, but they reproduce very fast. They are one of the most common pests. They suck juice from pineapple leaves and cause plant malnutrition. Aphids are one of the most troublesome pests in flower culture, but their control methods are relatively mature.

Prevention and control methods: when aphids are small, you can use a brush to gently scrape off the aphids to reduce the harm of aphids to the plant, and then cut off the damaged branches and leaves, and then need to spray drugs to completely eliminate aphids. Commonly used drugs have 40% omethoate emulsion 2000 times, and so on.