Coimbatore: Biocontrol laboratories in TNAU institutes in Coimbatore, Thanjavur and Aliyar were ordered to start out multiplying parasitoids like chrysoperla and encarsia on a conflict footing basis. They are at the moment generating round 700 parasitoids a day. The laboratories were asked to scale up their operations in an instant to make sure they're to be had for distribution to farmers. TNAU vice-chancellor N Kumar has issued an order to the biocontrol laboratories to start out the multiplication through Wednesday evening.
Entomologists and agriculture professionals were beneath serious drive from the state govt to bring speedy leads to controlling white fly menace which has severely affected coconut bushes and banana plants. In Coimbatore, Pollachi is probably the most affected zone.
The white fly was spotted in the Anamalai block in Coimbatore in 2016, and it temporarily unfold to different neighbouring districts equivalent to Tirupur, Erode and proper as much as Kanyakumari.
For the past couple of weeks, farmers in the district were urging scientists to talk over with their fields, see the bottom state of affairs and get a hold of a option to control the white fly menace. They said the measures prescribed through the state govt and scientists weren't efficient in controlling the menace.
However, professionals disagree the farmers’ claims. “Our measures were scientifically confirmed and 60% of farmers who visited us at a recently-held camp said our measures were efficient,” said Jeyachandran, an entomologist.
Advising a multi-pronged technique to struggle the white flies, they really useful the yellow sticky traps or sticky sheets smeared with castor oil which are placed at a gap of 5ftx1.5ft to lure the adult population. “However, the oil needs to be modified and the cardboard needs to be repainted at least once in three days,” said Mahimairaj, dean of research, TNAU. “The mass multiplied encarsia and chrysopid will multiply rapid and start eating all of the larvae and nymphs. When we provide 100 parasites in step with acre, they find it negligible. But they have no idea that it multiplies to thousands in a few weeks and can effectively control the larvae and nymphs.”
Spraying neem oil or the extracted alkaloid on the beneath floor of leaves, where the white flies normally leisure, will act as a natural repellent and keep them at bay. “But this needs to be executed often,” Kumar said.
TNAU said they had performed camps for 10,000 farmers in Aliyar and 100 awareness camps in the district over the past one-and-a-half years.
Entomologists and agriculture professionals were beneath serious drive from the state govt to bring speedy leads to controlling white fly menace which has severely affected coconut bushes and banana plants. In Coimbatore, Pollachi is probably the most affected zone.
The white fly was spotted in the Anamalai block in Coimbatore in 2016, and it temporarily unfold to different neighbouring districts equivalent to Tirupur, Erode and proper as much as Kanyakumari.
For the past couple of weeks, farmers in the district were urging scientists to talk over with their fields, see the bottom state of affairs and get a hold of a option to control the white fly menace. They said the measures prescribed through the state govt and scientists weren't efficient in controlling the menace.
However, professionals disagree the farmers’ claims. “Our measures were scientifically confirmed and 60% of farmers who visited us at a recently-held camp said our measures were efficient,” said Jeyachandran, an entomologist.
Advising a multi-pronged technique to struggle the white flies, they really useful the yellow sticky traps or sticky sheets smeared with castor oil which are placed at a gap of 5ftx1.5ft to lure the adult population. “However, the oil needs to be modified and the cardboard needs to be repainted at least once in three days,” said Mahimairaj, dean of research, TNAU. “The mass multiplied encarsia and chrysopid will multiply rapid and start eating all of the larvae and nymphs. When we provide 100 parasites in step with acre, they find it negligible. But they have no idea that it multiplies to thousands in a few weeks and can effectively control the larvae and nymphs.”
Spraying neem oil or the extracted alkaloid on the beneath floor of leaves, where the white flies normally leisure, will act as a natural repellent and keep them at bay. “But this needs to be executed often,” Kumar said.
TNAU said they had performed camps for 10,000 farmers in Aliyar and 100 awareness camps in the district over the past one-and-a-half years.
TNAU to help fight white fly menace
![TNAU to help fight white fly menace]()
Reviewed by Kailash
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November 29, 2018
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