HGS-102 was released in spring 2012, and is the first commercial grain sorghum hybrid by Heritage Seeds. Over the previous seasons, it has proven to be a high yielding option that appears well suited to all grain sorghum growing environments in QLD and Northern NSW. It offers a reliable package of high yields, very good standability, good seedling vigour, very good head exertion and excellent grain size and test weight.
DAFF in partnership with GRDC and the commercial sorghum breeding companies have developed a protocol for measuring the midge resistance (MR) levels in grain sorghum hybrids and assigning official MR ratings to all the commercially released lines.
HGS-102 has been evaluated by QLD DAFF for midge resistance. It has a confirmed official midge rating of 7.
Following this link to learn more about the Sorghum Midge Testing Scheme www.grdc.com.au/SorghumMidge
Variety Management / Agronomy:
HGS-102 doesn’t require any varietal specific management considerations, however when considering broader management requirements, please consult agronomists from QLD DAFF / NSW DPI or experienced commercial agronomists / consultants in the relevant growing areas.
Disease Resistance / Tolerance:
HGS-102 has been evaluated for both Charcoal Rot Lodging and Head Fusarium. Results from research trials suggest a rating of 6.5 for Charcoal Rot Lodging and 6 for Head Fusarium (where a score of 1 = very poor and 9 = excellent). For identification and management of other diseases such as Sorghum Ergot (Claviceps africana) and Leaf Rust (Puccinia purpurea) – please consult agronomists from QLD DAFF / NSW DPI or experienced commercial agronomists / consultants in the relevant growing areas.
In 2011, 2012 and 2013 HGS-102 has been evaluated in numerous grain sorghum environments (e.g. Goondiwindi, Moree, Coonamble, Gulargambone, Rowena, Tamworth) and has been compared with a number of well-regarded competitor hybrids like MR-Buster and MR-43.
Some very promising initial results have occurred at most sites – the yield comparisons at these sites were collected either with a weigh bin or with calibrated yield monitors. HGS-102 will be available in commercial volumes for the 2013/14 season – good reliable performance thus far would indicate it is very well suited to expanded plantings in all major grain sorghum growing areas.
Even though target plant populations vary with conditions, the uniformity of the established plant population is always extremely important. The plant population targeted depends on the depth of soil moisture at planting and the likely growing conditions. Under dryland situations, lower tillering hybrids should be planted at slightly higher populations.
Consider re-planting when populations are less than about 12–15,000 plants/ha, especially with quick maturity or low tillering hybrids. In skip row situations, aim for plant populations similar to those for good dryland moisture conditions.
When calculating planting rates allow for an extra 20–25% for establishment losses when planting into a very good seedbed on heavy black soil using press wheels and 40–50% when seedbed conditions are fair or when press wheels are not used. Obtain the number of seeds per kg and the germination percentage from the bag.
To determine the planting rate (kg seed/ha):
Required number of plants/m2 × 10,000
Seeds/kg × germ % × establishment %
4 (target plant population/m2) × 10,000
30,000 (seeds/kg) × 0.90 (germ %) × 0.75 (establishment %)
= 1.98 kg seed/ha
(These notes regarding plant populations are a direct copied transcript from page 9 of the 2009 Summer Crop Production Guide – written and published by NSW DPI).
In 2013, HGS-102 will be available with OptiCOTE seed treatment (Thiram fungicide + Gaucho® or Cruiser® insecticide) and OptiCOTE Plus seed treatment (Thiram fungicide + Gaucho® or Cruiser® insecticide + Concep II® seed safener).
Gaucho® is a registered trademark of Bayer – Cruiser® and Concep II® are registered trademarks of Syngenta.