Ad
related to: glyphosate application rate per hectare to square
Search results
Results From The WOW.Com Content Network
For 360 grams per litre (0.013 lb/cu in) formulations, European regulations allow applications of up to 12 litres per hectare (1.1 imp gal/acre) for control of perennial weeds such as couch grass. More commonly, rates of 3 litres per hectare (0.27 imp gal/acre) are practiced for control of annual weeds between crops.
The glyphosate-based herbicide RoundUp (styled: Roundup) was developed in the 1970s by Monsanto. Glyphosate was first registered for use in the U.S. in 1974. [4] Glyphosate-based herbicides were initially used in a similar way to paraquat and diquat, as non-selective herbicides. Attempts were made to apply them to row crops, but problems with ...
The resulting extracts were applied to soil flats containing watergrass (Echinochloa crus-galli) as an indicator species at the very high application rate of 100 pounds per acre (112 kg/ha). There was a herbicidal effect from this test, so the extracts were developed on a preparative thin layer chromatographic sheet.
For premium support please call: 800-290-4726 more ways to reach us
Application rates fell from 1,000–2,500 grams of active ingredient per hectare (g/ha) in the 1950s to 40–100 g/ha in the 2000s. [15] Despite this, amounts used have increased. In high income countries over 20 years between the 1990s and 2010s amounts used increased 20%, while in the low income countries amounts increased 1623%.
For premium support please call: 800-290-4726 more ways to reach us
The previous time glyphosate's licence came up for re-approval, the EU gave it a five-year extension after EU countries twice failed to support a 10-year period.
The timing of application is crucial as the moisture content of the grain must be below 30% for the yield of the crop to be unaffected and to minimize uptake of glyphosate by the grain. [23] Yield may be affected and residues increased if applications are made to uneven fields in which some areas have a moisture content over 30%.