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The use of economic thresholds of weed numbers based on their yield impact in the current crop alone is irrelevant!.. 10 use high crop sowing rates (6) crop-top lupins with paraquat (1) use seed-catching cart, burn dumps (10) a The number of years in which this treatment was applied is shown in parentheses... The tactics were able to compensate for the failure of post-emergent herbicides in years when they failed due to adverse seasonal conditions To explore the benefits of IWM further, the WeedRisk model was tested for a range of rotational and IWM options over a 20-year period for three ...
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Beneficial insects have many roles in the environment, including in agricultural systems... The guide provides a snapshot of key natural enemies of pests commonly encountered in grain crops in the northern region... Impact on pest the bugs attack a wide range of soft-bodied prey including aphids, whitefly nymphs, small caterpillars, leafhoppers, mites, immature bugs and beetles...
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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...
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" Impact Assessment: An Economic Analysis of GRDC Investment in Western Australian No Tillage Farming Association Executive Summary............................................................................................ In the short term some of these non-valued on-farm benefits will be captured in the yield gain assumed, through reduced loss of nutrients and higher organic matter, moisture holding etc, but the partitioning of the yield gain to different sources has not been attempted... The relationship between the management change to no-till and the soil and dust export reduction a...
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Supported by GRDC Grains Research Update for Growers sponsored by.. Having the N isolated from losses due to ammonification, denitrification and leaching means that if the crop really needs the N, it can access it 2014 Lake B o l a c GRDC Grai n s R e s e a rc h U p d a t e f o r G ro w e r s 38 with minimal loss... A fast track project was initiated to demonstrate and evaluate a range of management strategies that Twelve farms were surveyed across the western districts of southern Victoria that were considered suitable as potential trial sites based on grower and adviser recommendations...
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In accordance with the traditional research role GRDC has undertaken in other areas of grains industry research and development, GRDC has the opportunity to invest in cutting edge agricultural engineering research to investigate, identify and foster the application of new technologies to be applied to address engineering related issues... Given around half of these subjects are irrigation-related topics not directly related to most of the grains industry, the development of a 12-month post graduate course for mechanical engineers combined with some selective industry placement could encour...
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" estimating plant available water capacity reviseD 2013 version lawrence burk and neal Dalgliesh GRDC | 2 | ESTIMATING PLANT AVAILABLE WATER CAPACITY.. Rigid soils For the soils, where both DUL and BD are to be field measured it is suggested that a process be used that provides information on both parameters using the one sample... For shrink/swell soils it is possible to measure gravimetric soil water at DUL (using a 37 or 50mm diameter coring tube) and calculate BD, a much easier process than having to sample for BD in the field...
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3 1 0 2 n i A W n i n w o r g s e i t e i r a v t a e h w r o f s t i a r t c i m o n o r g a d n a y t i l a u q , s g n i t a r e c n a t s i s e r e s a e s i D 3 e l b a T tums galF wedlim yredwoP tsur faeL tsur epirtS tsur metS tops wolleY hctolb icitirt airotpeS hctolb murodon airotpeS y t e i r a V e d a r G S S.. ) % ( V C n o i t u a c h t i w s t l u s e r t e r p r e t n i o s s s a r g e y r d n a s s a r g e m o r b f o s l e v e l. hA gW i hn yi bd e dfi i es s is a ml oc re p b mo ot cl l i l at iS r T= :C # # ... 3 1 0 2 , n o i g e R t s a o C h t u o S e h t n i 6 d n a 5...
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At one or more sites this variety had lower resistance than previously reported... Do not sow into canola stubble from the previous year... Growers may sometimes experience signi cant variability from the averages shown by these ratings...
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