What causes the smell of growing carob?

The rotten roots of carob seedlings in the greenhouse are cowpea root rot, commonly known as rotten roots, ayathras, cowpea plague, which occur in various places, and the damage is more serious. Cowpea can be diseased from seedling to harvest, mainly affecting roots and stems. The root is diseased, showing typical root rot, the main and lateral roots and the base of the stem turn brown and rot, and the diseased part is slightly concave.

The aboveground leaves gradually wither yellow from the base upwards, and the whole plant dies in severe cases, and sometimes brown longitudinal cracks appear at the roots and stem bases. Stem disease, resulting in stem rot. At first, the lesion is water-stained, with reddish-brown edges, and then the lesion expands around the stem and shrinks and rots brown.

Finally, the stems and vines withered and died, and the diseased parts and nearby vascular bundles turned brown. When the humidity is high, sparse white mold can be seen in the fresh diseased department. When the bean plant begins to withdraw, it often decays and dies at the top of the bean plant, resulting in a "dead top".

It should be caused by the temperature being too high to germinate.

Stinky seeds may be when planting beans. The fertilizer underneath is too corrosive. Excessive pesticide and fertilizer is not good. It's best to wait until it comes out and then score points.

The temperature is uncomfortable, the humidity is too humid. This is likely to cause a stinking seed.

Do not water the ground and supervise the application of chemical fertilizers when planting beans, which is equivalent to painting snakes and adding more feet, and the beans are most afraid of moisture and water, and they will rot.

Beans, also known as cowpeas, long beans, and kidney beans, are a common vegetable in all seasons and are deeply loved by consumers. In recent years, with the upgrading of agricultural structure, most of China's vegetable planting bases have a single large-scale planting trend, and the phenomenon of carob root rot has also increased, which has a certain impact on production. So, what's going on with the rotten roots of the beans?

In previous years, some farmers have consulted that problems such as dryness, rotten roots, and leaf curling gradually appeared soon after the bean planting was planted, what is going on? It is understood that problems such as root rot, dryness, and leaf curling are generally caused by disease infection, such as wilt or root rot. After the damage of blight, the lower leaves of the diseased plant first yellow, and then gradually develop upward, the two sides of the leaf veins turn yellow to yellow-brown, and the leaf veins are brown, and when it is severe, the whole leaf is scorched and falls off.

The root system of the diseased plant is underdeveloped, the root cortex is rotten, and there are few or no new roots, which are easy to pull up. The pods of diseased plants are significantly reduced, and generally after entering the flowering stage, the diseased plants first wilt, and can return to normal in the morning and evening, and in the later stage, they wilt and even die all day.

When root rot is harmed, the roots or underground stems of the diseased plant produce water-stained reddish-brown spots, which later turn dark brown or black-brown, slightly concave, and the leaves turn yellow, developing from bottom to top, but the leaves do not fall off. In the later stage, the diseased part is sometimes cracked, or it is grooved and decayed, the taproot is damaged and rotted or necrotic, the lateral roots are rare, the plant is dwarfed, and it is easy to pull out. In severe cases, the plants wilt and die.

In a humid environment, pink pink mold often grows on the stems of diseased plants.

In addition to these two diseases, experts also remind vegetable farmers to pay attention to the prevention and control of carob root rot caused by root nematode damage. After invading the root, it develops with the growth of the root, absorbs nutrients in the root of the carob, and forms a giant cell at the affected part, and a large number of tissues in the phloem are necrotic, the xylem is enlarged, and the duct is blocked. Because the root system is unable to absorb and deliver nutrients for a long time, some parts of the root will rot.

In addition, root nematodes can also puncture the roots when attacking, causing mechanical damage, and the wound provides a convenient invasion of other soil-borne diseases. Therefore, in the case of serious damage of carob root nematode, soil-borne diseases such as wilt and root rot also often occur, and the root nematode aggravates the root rot of carob.

Therefore, experts suggest that vegetable farmers should prevent carob root rot when planting beans in the current spring, and should not ignore the prevention and control of carob root nematodes. To control carob root nematode, experts suggest that vegetable farmers comprehensively use various control methods in order to achieve better results. In addition, in order to completely eradicate nematodes, vegetable farmers also need to combine pesticides to control the reproduction of nematodes in the soil, and it is recommended to use Yinghui nematocides.

Vegetable farmers can use Yinghui threadicide granules to apply in furrows, holes or whole fields before transplanting beans, and the effective period can be as long as 2-3 months. If the beans are seriously damaged during the growth period, they can be irrigated with water and flushed.

It's normal, just after the seedlings emerge, the shoots are like this, don't care, you have to get the sun for a few days, and the yellowed shoots will turn dark green.

Good afternoon, teacher.

It's not a disease, it's an insect.

It should be a pest, it should be a pest, it should be a pest, it should be a pest, and other sap insects should not be in line with this kind of gnawing and a bean ash butterfly, and other possibilities are Coleoptera adults who are not in line with the pod borer.

You're welcome teacher