09 May, 2003
__*_CSD INGARD® varieties grown by Sundown Pastoral Company at “Keytah” this year have provided the highest yields ever recorded in a CSD variety trial._*
The large-scale trial was fully replicated and CRDC approved, and carefully managed by Andrew Parkes (pictured right).
Sicala V-3i and Sicot 289i have produced average yields of 5.35 and 5.25 bales/acre respectively over two seasons, a result that would have been considered impossible a few years ago, earning “Keytah” an enviable yield record.
This year’s trial, planted on October 10 and harvested on April 2, comprised four CSD commercial varieties, one experimental variety, and a Delta Pine nominated variety.
CSD extension and development agronomist, Rob Eveleigh, said the trial not only resulted in outstanding yields, but also in excellent fibre quality in relation to colour, length, strength, uniformity and micronaire.
Varieties in the irrigated INGARD® trial, in order of their yield performance included: Sicala V-3i, Sicot 289i, Sicot 289RRi, NuPearl RR, Siokra V-17i and the CSIRO experimental variety CSX 415.
The Sicala V-3i returned a yield of 13.73 bales per hectare or 5.56 bales/acre, a gin turnout of 40.23, staple length of 1.12 inches, measuring 4.5 microns, with strength of 29.19 and uniformity of 80.8.
The Sicot 289RRi produced a yield of 12.98 bales/ha or 5.25 bales/acre, a gin turnout of 39.9, staple length of 1.15 inches, measuring 4.6 microns, with strength of 30.09, and uniformity of 81.7.
Rob Eveleigh said all CSD/CRDC registered trials involved a common trial layout of 4 replicates of each variety, with each replicate at least 8 rows wide and the full length of the field.
“This allows the effect on yield of inherent field variations such as age of cultivation, or soil type; management practices such as insecticide application, irrigation or picking; and climatic influences such as rainfall or hail, to be separated out from actual varietal differences,” he said.
During each season, insect control and irrigation timing decisions are left entirely to the grower and their consultant, thus all varieties perform under management conditions that are typical of the production region.
“By adhering strictly to CRDC trial protocol, CSD provides growers with access to valid and reliable results that they can use confidently in choosing varieties for the following season, Growers should be cautious about drawing conclusions from single field yields, and in assessing trials that are not CRDC approved,” Rob Eveleigh said.
He noted that based on the “Keytah” trial data, Sicot 289RRi will be one of the most popular CSD varieties in demand in the coming 2003-04 season. He said delinting of seed for the new season was in full swing at CSD’s Wee Waa facility.
The latest variety trial results are now on-line at Trial Tracking, visit: Variety Trials 2003
Further Information: *"Robert Eveleigh**, John Marshall, Greg Kauter or Craig McDonald":showstaff.asp?staff=1
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