[ASC-media] TIMELY NO-TILL TIPS: Crop Doctor

BRENDON CANT brendon at iinet.net.au
Wed Nov 29 02:25:19 CET 2006

TIMELY NO-TILL TIPS 29.11.06<?xml:namespace prefix = o ns =
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WA No-Tillage Farmers Association (WANTFA) urges growers to control summer
weeds early and protect soil moisture.


WANTFA Extension Officer, Mike Ashworth warns growers that with low levels
of crop residue available this summer, due to drought limited crops, it will
be important to carefully manage stubbles to prevent erosion.


WANTFA will expand where and how it monitors the impact of erosion and the
benefits of no-till practices after receiving Grains Research and
Development Corporation (GRDC) funding for a long term trial, initially
funded for three years, at two sites in WA, which could take no-till to a
new level.


One site at Mingenew will be managed by the Mingenew Irwin Group and the
other, at the College of Agriculture, Cunderdin, will be managed by WANTFA.


Following an Australian Government Department of Agriculture, Fisheries and
Forestry National Landcare Program and GRDC supported visit by Paraguayan
no-till expert Rolf Derpsch last year, it was agreed long term no-till
trials were needed because these systems generally only showed benefits,
such as increased organic matter, in the long term.


The WANTFA Derpsch report recommended farmers increase soil organic matter
by retaining as much soil cover or stubble as possible, virtually
eliminating tillage, using diverse rotations and a more holistic approach to
weed management.


Derpsch also recommended seeding with discs, as he believed that under a
tyne system, with limited rotation options, no-till had plateaued and it
appeared difficult to advance the system to a higher level.


The GRDC project will test and further develop the Derpsch recommendations
for improving the quality of the no-till system based on permanent soil


The sites will have good baseline data for long term comparisons, including
chemical, physical and biological soil measurements, plus nematode, disease
and weed assessments.



The Crop Doctor is GRDC Managing Director, Peter Reading, Tel 02 6272 5525

Further Information: Dr Ken Flower, Tel 08 9622 5584

GRDC REF: CDNov061.doc/Blumenthal

Brendon Cant & Associates
Public Relations & Marketing 
Suite 5
4 Gugeri St
Claremont WA 6010
Tel 08 9384 1122


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