You are here

application rate

Catalogue: GRDC Updates
Growers that have the weed seed bank under control will save herbicide costs; be able to use diverse tactics that would otherwise be cost prohibitive; and, by reducing the frequency of herbicide applications, will delay the onset of herbicide resistance... With any discussion on managing resistance we need to start with the basics and understand why we have the problem in the first place... Registration of high application rates by this technique may allow the control of resistant weeds that have survived a preceding application of a different mode of action...
Related categories:
Catalogue: GRDC Updates
" Date: 16.09.2009 NEW SPRAY TECHNOLOGY DELIVERS VARIABLE RATE APPLICATION WITHOUT A CHANGE IN DROPLET SIZE.. A valuable way to use this capability is to adjust pressure and droplet size depending on wind conditions and proximity to spray sensitive areas... Rate and speed were maintained pressure was reduced to increase droplet size while spraying north end of field...
Related categories:
Catalogue: GRDC Publications
The results of experiments conducted in our PA research program suggest that variations in the soil often explain much of the variation in crop performance... Using Figure 4a as an example, spatial interpolation is used to estimate the yield that would have been achieved from treatment 2 in the strips that actually contained treatment 1, and vice_versa... Interpolation: A term describing a number of mathematical procedures which are used to create continuous map surfaces from values measured at points...
Related categories:
Catalogue: GRDC Media
A large and increasing number of growers now have high levels of resistance to all Group A herbicides... In spite of resistance, many populations of ryegrass can still be controlled by one or more Group A herbicides and many users still rely on post-emergent applications of Group A herbicides to manage escapes in wheat and broadleaf crops... Group A herbicides work much better on small weeds, with performance rapidly declining once plants start to tiller...
Related categories:
Catalogue: GRDC Media
A large and increasing number of growers now have high levels of resistance to all Group A herbicides... In spite of resistance, many populations of ryegrass can still be controlled by one or more Group A herbicides and many users still rely on post-emergent applications of Group A herbicides to manage escapes in wheat and broadleaf crops... Group A herbicides work much better on small weeds, with performance rapidly declining once plants start to tiller...
Related categories:
Catalogue: Ground Cover
Dr Mayfield, who is trialling the NSensor for the Southern Precision Agriculture Association (SPAA) in conjunction with the Hart (SA) Field Days Group and others in projects supported by the GRDC, says the technology does not measure how much fertiliser (nitrogen) needs to be applied, it simply identifies areas where extra nitrogen would benefit growers" yield and protein aims... Dr Mayfield describes the N-Sensor as a diagnostic tool, not something that replaces good agronomic advice and decision making: "Growers still need to know the underlying reasons for variations in crop growth and yield through soil and/or tissue testing... Mr Heath, who first learned about the N-Sensor during his scholarship prize trip to Europe, describes the N-Sensor as something that looks like an oversized spoiler mounted on a tractor or other vehicle, and fitted with optical sensors that establish normalised digitalised vegetation indices (NDVI)...
Related categories:
Catalogue: Ground Cover
Versatile nozzles give more spray options.. Selecting the most suitable nozzle size and type, and using rate-control functions, such as the minimum hold for pressure, speed or volume, can help reduce these problems," he says... With banded and shielded spraying becoming more popular, growers may need formulas to calculate application rates and select the most appropriate nozzle size and pressure," he says. "..
Related categories:
Catalogue: Ground Cover
Versatile nozzles give more spray options.. Selecting the most suitable nozzle size and type, and using rate-control functions, such as the minimum hold for pressure, speed or volume, can help reduce these problems," he says... With banded and shielded spraying becoming more popular, growers may need formulas to calculate application rates and select the most appropriate nozzle size and pressure," he says. "..
Related categories:
Catalogue: GRDC Factsheets
a chemical analysis of recycled organics is essential in determining the potential nutrients available, calculating application rates and identifying potential benefits and risks... Soil contamination While recycled organics may improve soil health the potential build-up of some nutrients and heavy metals and other chemicals in the soil is an issue that needs to be considered and managed... Soil testing is essential to monitor changes in soil and adjust application rates ...
Related categories:
Catalogue: GRDC Factsheets
a chemical analysis of recycled organics is essential in determining the potential nutrients available, calculating application rates and identifying potential benefits and risks... Soil contamination While recycled organics may improve soil health the potential build-up of some nutrients and heavy metals and other chemicals in the soil is an issue that needs to be considered and managed... Soil testing is essential to monitor changes in soil and adjust application rates ...
Related categories:

Pages