SELECTIVITY OF SOME NEW HERBICIDES FOR DIRECT-SEEDED FLOODED RICE IN THE TROPICS |
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| Authors: | S. K. DE DATTA and P. C. BERNASOR |
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| Affiliation: | The International Rice Research Institute, Los Baños, Laguna, Philippines |
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| Abstract: | Summary. Granular formulations of several new herbicides were tested for control of weeds in direct-seeded tropical rice. S -(4-chlorobenzyl)- N N -diethylthiolcarbamate (benthiocarb) and N -(butoxymethyl)-2-chloro-2',6'-diethylacetanilide (CP 53619) showed a high degree of selectivity between rice and weed seedlings. Applied 6 days after seeding, when grass weeds were at the 1-2-leaf stage, both herbicides gave excellent control of Echinochloa crus-galli and other weeds, and caused little or no damage to rice cv. IR22. |
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