Data/hora: 25/06/2024 00:23:47

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 27/02/1996
Data da última atualização: | 27/02/1996
Autoria: | SCIFRES, C. J.; HAHN, R. R.; DIAZ-COLON, J.; MERKLE, M. G.
Título: | Picloram persistence in semiarid rangeland soils and water.
Ano de publicação: | 1971
Fonte/Imprenta: | Weed Science, v.19, n.4, p.381-384, July, 1971.
Idioma: | Inglês
Conteúdo: | Residues in soil, following application of 0.25 lb/A of 4-amino-3,5,6-trichloropicolinic acid (picloram) to semi-arid rangelands, usually were restricted to the top 12 inches for 60 days. Five ppb or less picloram were detected below 12 inches at 120 to 180 days after applica- tion; but picloram usually dissipated from the soil profile within a year. More picloram was detected 5 months after application at 6 to 18 inches deep at the lower ends of plots with 3% slopes than in plots with 0, 1, or 2% slopes. Runoiff water from plots irrigated 10 days after treatment contained 17 ppb picloram. Irrigation or rainfall at 20, 30, or 45 days after picloram applicaion resulted in less than 1 ppb picloram in runoff water. No more than 1 or 2 ppb picloram were detected after dilution of runoff water in large ponds.
Palavras-Chave: | Herbicide; Semiarid rangelands.
Thesagro: | Água; Herbicida; Solo.
Thesaurus Nal: | picloram; soil; water.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (30956-1) - ADD - SP - -- - SP1972 -  - 1972 - DIS