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Laguna agriculture officials receive seeds of tungro-resistant rice
Tuesday, 2016/07/26 | 08:15:51

IRRI News Thursday, July 21, 2016

 

Figure: During a visit to IRRI, Regional Crop Protection Center Chief  Cecille Marie Manzanilla (third from left) receives tungro-resistant rice seeds from Chris Croombes (second from right). 

 

LOS BAÑOS, Philippines, 14 July—Agriculture officials and technicians from the Southern Tagalog Region recently received seeds of tungro-resistant rice varieties (photo) developed at the world’s leading rice research center. The seeds were handed over during their visit to the the International Rice Research Institute (IRRI). The officials were from the Regional Crop Protection Center (RCPC IV-A) of the Department of Agriculture (DA) and field technicians represented Liliw and Magdalena municipalities in Laguna province.

"I'm glad we can help local farmers and we look forward to a continuing partnership," said Chris Croombes, director of IRRI's Human Resources, who assisted with the seed distribution to the visitors.

 

"One of the functions of the crop protection center is to diagnose problems affecting rice farmers," said Dr. Cecille Marie C. Manzanilla, RCPC chief. "During one of our visits to farmers, we saw that several of their fields were affected by what looked like rice tungro virus. So, we asked IRRI to confirm the virus's presence." Precy Esmejarada and Norberto Licong, agricultural technicians from Liliw and Magdalena, respectively, reported that the virus disease is a common problem in their towns.

 

Rice tungro, a serious disease caused by viruses transmitted by green leafhoppers, induces leaf discoloration, stunts growth, reduces tiller numbers, and sometimes causes sterile or partly filled grains. Licong observed that farmers frequently exchange tungro-susceptible seeds with other farmers, a practice that could spread the rice tungro virus. Another observation is that farmers don't plant at the same time. This asynchronous planting can result in a steady food supply for the leafhoppers.

 

"Asynchronous planting is a major factor because the leafhoppers prefer to eat younger plants," explained Dr. Gilda Jonson, a senior associate scientist at IRRI's Genetics and Biotechnology Division. "Leafhoppers tend to move to newer plants that are growing. But when the rice plants are uniformly planted in the field, this prevents leafhoppers from moving to neighboring fields.” Rice tungro disease is more common during the wet season because insect populations tend to increase when there is a continuous food source.

 

Although asynchronous planting contributes to the problem, farmers continue to practice it. "Farmers in Liliw and Magdalena always plant rice ahead of farmers in other towns because their areas are nearer to the irrigation source," Jonson explained.

 

See more http://news.irri.org/2016/07/laguna-agriculture-officials-receive.html

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