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Effect of repeated annual application of preemergence herbicides on paddy field weed populations

, : Effect of repeated annual application of preemergence herbicides on paddy field weed populations. Proceedings of 5th Asian Pacific Weed Science Society Conference, Tokyo, Japan, 1975: 287-292

Repeated annual application of butachlor at 1.5 kg, thiobencarb + simetryne 2.55 kg, nitrofen 2.1 kg and 2,4-D-isopropyl 0.9 kg/ha 4-6 days after transplanting rice on loam soil to control annual weeds, increased weed dry wt. creating a predominance of the perennial sedges Eleocharis kuroguwai and Cyperus serotinus and the annual sedge Scirpus juncoides; these species increased from 45% of the total weed population after the first year's treatment to 69% after the fourth year.


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Egen, K., 1954: Differential diagnostic errors in schizophrenia. Hippokrates 25(15): 466-469

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Vassilev, N.; Vassileva, M.; Azcon, R.; Medina, A., 2001: Application of free and Ca-alginate-entrapped Glomus deserticola and Yarowia lipolytica in a soil-plant system. This study was performed to investigate the applicability of microbial inoculants entrapped in alginate gel. Glomus deserticola (AM) was inoculated into soil microcosms, enriched with rock phosphate, as either free form or entrapped in calcium alg...

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Stein, J.; Zuklinova, M., 1961: The electroencephalogram in patients with intracranial space-occupying processes in childhood. Ceskoslovenska Pediatrie 16: 1070-1085

Hiatt W.N.; Gallagher J.L., 1975: History of the Rio Bravo Field. JPT Journal of Petroleum Technology