Biserrula is proving a beneficial pasture legume for cereal crop rotations in Western Australia. This persistent annual legume can be used to rest and rehabilitate heavily cropped country, and to manage weeds. Used in pasture phases, it can leave plenty of nitrogen available for future crops, and eventually provides good grazing […]
Category: Strategic Planning
Not enough nitrogen is the most common limit to canola yield. The current key messages on nitrogen (N) for canola crops are:
biomass is the biggest driver of canola yield
low N limits biomass
low biomass limits water and nutrient uptake
canola crops need 80 kg of available N per tonne of grain yield
Grain zinc (Zn) content is important for seedling vigour. Make sure grain Zn levels are adequate if you are saving grain to seed next season’s crop. Retaining seed grown on Zn sufficient paddocks can reduce the risk of Zn deficiency in young crops.
Less than 500 micrograms Zn per seed […]
Soil spectroscopy might soon offer faster, cheaper soil testing. Soil analysis is an essential cost in strategic crop nutrition management.
Spectroscopy uses mid infrared (MIR) or near infrared (NIR) radiation. Spectrometers fire radiation at a sample and then measure what’s reflected back. Different absorption and reflectance patterns can measure soil […]
The yields of ‘break crops’ are more important to farm incomes with higher prices for some non-cereal crops. In 2017, 22.5 million hectares were sown to winter crops. Over 20% – 4.7 million ha – were non-cereals. In the period leading up until 2011, break crops were around 14% of […]
Deep N soil tests are showing low available nitrogen (N) to start 2017 winter crops. Just over half of the tests coming through Nutrient Advantage Lab Services show < 30 kg/ha of plant available nitrogen in the root zone. Three- quarters show < 60 kg/ha of nitrogen.
With less than 30 […]
Keys to successful sampling and interpretation of plant tissue analysis in winter crops
Friday, 28 July 2017 3:00 PM AEST
Presented by Chris Dowling
Chris Dowling is presenting a FREE WEBINAR for advisors and growers from all Australian grains regions. It will provide information about key considerations when sampling and interpreting plant tissue analysis for winter crops across Australia.
Chris will […]
Crop residues influence the supply and uptake of nitrogen (N). In the long term, residues will improve soil fertility. Stubbles can immobilise soil N as they break down. Moisture makes a big difference to the rate of stubble decomposition and mineralisation of nitrogen in the soil.
Nathan Craig was involved […]
Sandy soils can show poor water use by crops. There are around 5 million hectares of sandy soils in Australia’s low-medium rainfall southern region. Growers see poor crop performance even with residual subsoil water at harvest.
To date, options to improve sandy soils are either:
Mitigation: lower-cost, annual activities. Techniques include […]
Responsive nitrogen (N) management optimises grain yield and grazing value from dual-purpose crops. Dual-purpose crops are sown early, grazed during winter, then grown on to produce grain. For dual purpose crops in the southern region the framework for N nutrition should be:
Apply adequate N upfront to promote vigorous forage […]