Vertical Movement of Oxamyl in Soil

vertical movement of salts in unsaturated soil by electro-chemico-osmosis

this study investigates the vertical replacement of salts, variability of electrical conductivity (ec) and soil acidity (ph) due to direct electrical current. a plexiglas cylinder 100 cm in depth with a 14 cm radius was used as a soil container and filled with uniform moist soil to 90 cm. during the experiments, the bottom 10 cm of soil in the cylinder was kept saturated. a steel bar was used a...

Chlorophyll Fluorescence Applied in the Analysis on Vertical Movement of Herbicides in Soil

Five photosynthesis inhibiting herbicides were com pared for their mobility in soil colum ns used as the penetration m odel. The vertical m ovem ent o f these com pounds in soil was an a ­ lyzed by a newly developed technique in which herbicide distribution was determ ined by the intensity o f chlorophyll fluorescence in Chlorella cells suspended in aqueous extracts o f soil samples from variou...

Transient drainage from a vertical soil column

Transient drainage from a vertical soil column

Control of citrus nematode Tylenchulus semipenetrans on fine-textured soil with DBCP and oxamyl.

Three grapefruit orchards on sour orange rootstock were treated by metering DBCP (l,2-dibromo-3-chloropropane) at 56 kg(a.i.)/ha into 15 cm of water in a flood irrigation system. In orchards with 43-49% clay in the surface foot, DBCP reduced numbers of Tylenchulus semipenetrans below control levels for 1.5-2.0 years. In the 3 orchards, DBCP treatment resulted in increases in yield or fruit size...