Fruiting Response of Cotton (Gossypium hirsutum) to Pyrithiobac
| Autor: | Ralph L. Allen, Scotty H. Crowder, Charles E. Snipes |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
0106 biological sciences
Fructification food.ingredient Plant Science engineering.material 01 natural sciences Fiber crop Gossypium hirsutum chemistry.chemical_compound food Botany Malvaceae Fluometuron biology 04 agricultural and veterinary sciences Phytopharmacology biology.organism_classification 010602 entomology Horticulture chemistry 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Phytotoxicity Agronomy and Crop Science Cotyledon |
| Zdroj: | Weed Technology. 11:59-63 |
| ISSN: | 1550-2740 0890-037X |
| Popis: | ithiobac was applied at 105 or 210 g ae/ha either PRE or POST to cotton in the cotyledon to 2-leaf, 5- to 7-leaf, and matchhead-square (MHS) stages of growth. At one location, monosodium salt of methylarsonic acid (MSMA) and fluometuron plus MSMA were applied as standard comparisons. At the Stoneville location, injury 1 wk after treatment (WAT) with pyrithiobac ranged from 2.5% with 105 g/ha applied at cotyledon to 2-leaf to 26% with 210 g/ha applied at MHS. Injury was transient in nature and was rarely detectable 4 wk after treatment in either year. Injury was not evaluated at the Greenville location. At Stoneville, a reduction in height occurred with MHS applications of pyrithiobac and MSMA. There was no reduction in yield for any treatment compared to the untreated check in 1991 at Stoneville and in both years at Greenville. In 1992 at Stoneville, treatments of 210 glha pyrithiobac, MSMA, and fluometuron plus MSMA at all application timings reduced yield. Pyrithiobac at 105 g/ha applied PRE also reduced yield. Greatest yield loss occurred with treatments of MSMA applied at MHS. There were no yield reductions at either location with postemergence application of 105 g/ha pyrithiobac. Nomenclature: Fluometuron, N,N-dimethyl-N'-[3-(trifluoromethyl)phenyl]urea; MSMA, monosodium salt of methylarsonic acid; pyrithiobac{2-chloro-6-[(4,6-dimethoxy-2-pyrimidinyl)thio]benzoic acid); cotton, Gossypium hirsutum L. 'DES 119.' Additional index words: COTMAP, cotton fruiting, cotton maturity, cotton tolerance, mapping. Abbreviations: MHS, matchhead square; PDS, postemergence-directed spray; POT, postemergence |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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