What is the role of allelopathy in organic agriculture?
Allelopathic compounds act as repellents for herbivorous pests, so the same strategy used in weed control could be effective against pests and pathogens, e.g., push–pull strategy. The new crop varieties with elevated allelopathic activity could be a great chance not only for organic farming.
What are the uses of Allelopathy in sustainable agriculture?
In many natural ecosystems allelopathy plays a major role in structur- ing plant community and succession by influencing soil chemistry and nutrient dynam- ics, controlling competitive interactions and productivity of desirable plants (Vivanco et al. 2004).
What is allelopathy discuss its role in major cropping system of irrigated agriculture?
Allelopathy is a biological phenomenon in which plants release chemical poisons to destroy neighbouring plants in their bid for more space and sunlight. The poison released are deadly, they change the very genetic structure of the victim plants preventing its growth and ultimately leading to its death.
What is allelopathy in crop production?
Plant allelopathy is one of the modes of interaction between receptor and donor plants and may exert either positive effects (e.g., for agricultural management, such as weed control, crop protection, or crop re-establishment) or negative effects (e.g., autotoxicity, soil sickness, or biological invasion).
How is allelopathy used in agriculture?
Allelopathy has applications in agriculture and forestry, such as in weed control. Allelopathy can also be used to control insect damage and be used in place of insecticides, or as a tool for disease management such as controlling the growth of bacteria, fungi, or viruses that infect plants.
How allelopathy can be used in the irrigated lands of multi cropping agriculture?
Crop allelopathy can be effectively used to control weeds in the field, to alleviate allelopathic auto- toxicity and reduce inhibitory influence among allelopathic crops to improve the utilization rate of land and to increase the annual output of the soil by establishing reasonable crop rotation and intercropping …
What are allelochemicals in plants?
Specialized Terms. Allelochemicals Plant chemicals, sometimes called secondary plant compounds because they are produced as by-products of intermediary metabolism, that may function in defense against insect herbivory. Antifeedant A chemical, often toxic, that prevents or reduces feeding.
What are examples of Allelochemicals?
Tables
| Allelopathic plant | Impact |
|---|---|
| Garlic mustard | Inhibition of arbuscular mycorrhizal fungi colonizing on sugar maple |
| Barbados nut (Jatropha curcas) | Extracts of leaves and roots inhibited corn and tobacco |
| Chicory | Inhibition of Echinochloa crusgalli and Amaranthus retroflexus |
Why is understanding allelopathy important in agriculture?
Because of the increased interest in vari- ous agricultural systems where plant interactions are critical, knowledge of allelopathy is a necessity. When our knowledge of these interactions is more complete, they may become useful tools in plant breeding, herbicide studies and crop production.
How is food production related to deforestation in North America?
Note that food production was once a major driver of deforestation in North America and Europe, but much of the clearing happened a hundred or more years ago. Since many forests in these areas were already gone by 2000, their absence does not register as forest loss.
How is agriculture connected to deforestation in Africa?
The clearing is done by subsistence farmers, often families, who raise a mixture of vegetables, fruits, grains, and small livestock herds for a few years and then let fields go fallow and move on as soil loses its fertility. The practice is especially common in Africa, and has become more so since 2000 due to increasing human populations.
How many football fields are destroyed each day by deforestation?
Deforestation is the large-scale clearing of land, generally for agriculture, industry, or transportation. Upwards of 50,000 acres of forest are cleared by farmers and loggers per day worldwide. An area equivalent to over 10,000 football fields is destroyed each day in the Amazon Basin alone.
How does deforestation affect animals and the environment?
This extreme clearing of land, especially for animal agriculture, results in habitat loss, amplification of greenhouse gases, disruption of water cycles, increased soil erosion, and excessive flooding. A significant amount of total deforestation occurs in rainforests, which are home to over 50 percent of plants and animals on the planet.