You are here

crop yield potential

Categorised under:

Catalogue: GRDC Factsheets
When first shifting to variable rate inputs, start with those that are not time-critical such as applying lime, gypsum or top-dressed nitrogen or potassium... In-paddock variation can be measured and mapped at harvest and during the growing season while crops are growing... But more detailed and accurate zones are produced using statistical software packages that combine different layers of spatial data (such as yield and EMI maps, see Figure 2)...
Related categories:
Catalogue: GRDC Final Reports
We applied the tools to two case study catchments in Western Australia (WA) and showed that by taking account of soil type and seasonal influences on crop yield potential, gains of $2-40/ha are possible... We used simulated estimates of wheat yield potential generated by the decision making tool, APSIM, from the past 30 seasons at locations in the Western Australian (WA) central wheat belt (Kellerberrin) and northern agricultural region (Mingenew), run over a wide range of soil types from each district... The author believes there would be merit in assessing the gains in better use of these technologies versus the issue covered in this project - better matching of nutrients to yield goals...
Related categories:
Catalogue: GRDC Publications
A number of data sets used in this document on water and nitrogen effects of summer fallow weed management have been developed as a part of the GRDC supported Water Use Ef ciency initiative... In the right soil, deep stored soil water can have a water use ef ciency of up to 60 kg of grain/mm of stored water... Early weed control was vital to store and keep valuable subsoil moisture...
Related categories:
Catalogue: GRDC Updates
Strategies for improving water-use efficiency in western regions through increasing harvest index.. 4. Increase the total proportion of dry matter that is grain i.e. improve harvest index (e.g. early flowering varieties, delayed nitrogen, wider row spacing, low plant densities, minimising losses to disease, high HI varieties such as H45 , Hindmarsh , Wyalkatchem , Espada ).. Harvest index is calculated as the ratio of grain to total dry matter (and is sometimes expressed as a percentage);..
Related categories:
Catalogue: GRDC Final Reports
The maps can be used to assess how much variation is needed for PA to be profitable and identify areas of paddocks responsive to inputs... While the results will go some way towards informing the debate about the profitability of PA, it illustrates that the use of, and benefits from, PA technology vary from farm to farm - in line with farmer preferences and circumstances... A new approach to thinking about management zones as responsive/unresponsive to inputs, rather than the traditional approach of static zones based on average yield performance...
Related categories:

Pages

Associated key phrases