Farmers using direct seeding may need to control weedy rice earlier than usual, after a study found that the weed gains its advantage before cultivated rice reaches its reproductive stage. The Philippine Rice Research Institute ( PhilRice )-led study found that weedy rice can outgrow cultivated rice because it emerges earlier, grows taller, produces more tillers, and develops larger and more highly branched roots. Dr. Leylani M. Juliano , PhilRice lead researcher, said that these traits help weedy rice absorb more water and nutrients from the soil. The weed can also continue using sunlight efficiently to grow even when nutrients are limited, giving it a stronger chance to compete in direct-seeded fields. She said understanding how the weed competes can guide researchers in improving the timing and design of management strategies, especially during the early stages of crop growth. The study showed that weedy rice builds much of its advantage from the seedling stage until be...
Online edition of The Ilocos Times, a community newspaper based in Laoag City, Ilocos Norte.