What are the dangers of continuous cropping of vegetable crops
Let me introduce you to the small experience of the dangers of continuous cropping of vegetable crops, let's take a look together.
What are the dangers of continuous cropping of vegetable crops
The direct harm caused by continuous cropping is what we commonly refer to as the phenomenon of consecutive stubble. In vegetable planting, generally, crops such as cucurbitaceous vegetables, solanaceous vegetables, cruciferous vegetables, and ginger have obvious harms if they are continuously cropped. Especially the planting of ginger, I heard that after planting for one or two years, the land cannot continue to plant ginger, otherwise, ginger
The harm of continuous cropping of crops
The continuous cropping of crops and vegetables refers to the planting of the same type of crops in the same plot of land within a year or for consecutive years. The direct harm caused by continuous cropping is the phenomenon we commonly refer to as consecutive stubble. The specific reasons and phenomena are as follows:
First, the frequent occurrence of diseases in this crop, especially soil-borne diseases, gradually increases.
Due to continuous cropping, the pathogens produced by the previous crop remain in the soil and gradually accumulate, resulting in more serious diseases when crops are planted again.
In particular, soil-borne diseases such as wilt disease, collapse disease, stem rot disease, root rot disease, bacterial wilt disease, and vine wilt disease are increasingly加重.
Second, the nutrient content in the soil decreases, and the soil quality decreases.
When continuous cropping, the same type of crop has the same demand for nutrients, and despite the targeted fertilization by farmers, fertilizers added are mostly nitrogen, phosphorus, and potassium nutrients, and organic matter and trace elements are often insufficient.
After the preferred nutrients of the crop are excessively consumed, the growth status and yield will decrease when planted again.
At the same time, the reduction of organic matter and beneficial microorganisms will lead to the destruction of the soil granular structure, the decline of permeability, and the disadvantageous for root survival. This will also result in the decreasing effect of fertilizer usage.
Third, the phenomenon of self-toxicity in plants is aggravated.
Competition is everywhere in nature, and there are also competitors in the same species. To grow well, the roots of crops will secrete some toxic substances to inhibit the growth of competitors.
This situation is not obvious at the beginning, but with the accumulation of consecutive years, it will become more and more obvious. The growth of field crops is uneven in height and strength.
Which crops should not be continuously cropped
1. Leguminous crops
Leguminous crops are most afraid of consecutive stubble, and if planted continuously, the seedlings will be attacked by viruses.
In rural areas, it is called "fire dragon disease", the seedlings do not grow after emergence, and gradually show shrinkage, and finally wither and die. These crops include soybeans, green beans, cowpeas, peas, etc.
2. Melon crops
Melon crops, like leguminous crops, are most afraid of consecutive stubble. Once consecutive stubble occurs, the leaves will turn yellow, wither, and shrink, and the flowers will also fall off.
Moreover, the seedlings of melons will also show phenomena such as stiff seedlings, no growth, yellowing, and early aging, and in severe cases, the seedlings will wither and die before flowering, such as cucumbers, watermelons, pumpkins, towel gourds, wax gourds, etc.
3. Eggplants and peppers should not be consecutive stubble
After consecutive stubble of eggplants and peppers, the plants will have serious diseases and their growth will also be abnormal. Common symptoms include root diseases, leaf withering, root rot, and plant death.
Because these diseases are caused by consecutive stubble, not general diseases, it is difficult to control them with drugs.
Therefore, when planting eggplant or pepper plants, do not plant them continuously in one place. They should be rotated with other vegetables to reduce the occurrence of diseases and obtain high yields.
4. Garlic and onions should not be consecutive stubble
Garlic and onions are most afraid of consecutive stubble planting. Continuous planting of garlic or onions in the same plot of land will form a toxin in the soil.
It will cause the leaves to turn yellow, the plants to become weak, poor growth, and more seriously, it will directly lead to root rot, severely affecting yield and quality.
Therefore, garlic should not be planted continuously with garlic, onions with onions, or garlic with onions. They need to be rotated with other crops.
The most direct and effective method to solve the problem of consecutive stubble is to rotate crops properly, and crops of the same type or within the same family should not be consecutive stubble.
In vegetable planting, generally, crops such as cucurbitaceous vegetables, solanaceous vegetables, cruciferous vegetables, and ginger have obvious harms if they are continuously cropped.
Especially the planting of ginger, I heard that after planting for one or two years, the land cannot continue to plant ginger, otherwise, ginger wilt disease, stem rot disease, and other conditions will occur very seriously.
Continuous cropping is not absolutely impossible, taking appropriate measures such as increasing the application of organic fertilizer, microbial fertilizer, and timely cleaning of the garden can reduce or alleviate the harm.
The above is the small experience of the dangers of continuous cropping of vegetable crops, hoping to bring you help in life!