Devine is the first bioherbicide registered in United states and is used for controlling milk weed vine. The product is made up of liquid concentrate of chlamydospores of Phytophthora palmivora. The pathogen infects the roots of the milkweed vine and wilts it totally. Collego is another bioherbicide made from Coleotrichum gleosproriodes- the anthracnose causing fungal pathogen and is used to control Aeschynomene virginica in Rice and Soybean crops.

Explanation:

Biofungicides:
Biofungicides are biological agents that are used to control fungal diseases in plants. They are derived from living organisms such as bacteria, fungi, and viruses. These biofungicides can be effective in controlling a wide range of plant diseases and are considered to be environmentally friendly alternatives to synthetic fungicides.

Devine and Collego:
Devine and Collego are two trade names of biofungicides. Trade names are commercial names given to products by their manufacturers to distinguish them from other similar products in the market. In this case, Devine and Collego are biofungicides that are specifically designed to control fungal diseases in plants.

Mode of Action:
Devine and Collego work by inhibiting the growth and development of fungal pathogens. They contain specific strains of beneficial fungi or bacteria that produce enzymes or compounds that can suppress the growth of harmful fungi. These biofungicides can also induce systemic resistance in plants, making them more resistant to fungal infections.

Advantages of Biofungicides:
1. Environmentally friendly: Biofungicides are derived from natural sources and have minimal impact on the environment compared to synthetic fungicides.
2. Target-specific: Biofungicides are often specific to certain fungal pathogens, allowing for targeted control without harming beneficial organisms.
3. Residue-free: Unlike synthetic fungicides, biofungicides leave little to no residue on harvested crops, making them suitable for organic farming.
4. Resistance management: The use of biofungicides can help reduce the development of resistance in fungal pathogens, as they have a more complex mode of action compared to synthetic fungicides.

Conclusion:
Devine and Collego are trade names of biofungicides that are used to control fungal diseases in plants. These biofungicides offer several advantages over synthetic fungicides, including environmental friendliness, target-specificity, and residue-free application. They are valuable tools for integrated pest management strategies and sustainable agriculture.