Sorghum Tips

Online Chemical Label Service & Irrigated Seeding Rates (HP)

One-Stop Online Access to All Chemical Labels

Do you need easy access to chemical labels for planning purposes, wish to ‘shop’ for herbicide specifics or for names of generics vs. brand name chemicals?  Texas AgriLife staff rely on http://www.cdms.net to readily obtain label information from their computer.  Access is free.  To use Chemical Data Management Systems’ database, log in to the website then:  1) click ‘Services’, then ‘Labels/MSDS’, 2) enter the desired product name in the search box (keep the name simple, for example ‘Dual’ rather than ‘Dual Magnum’ to ensure you return all labels for Dual products), 3) select the label of your choice, 4) choose the main label or any supplemental labels you might need.

You may also search for chemicals based on active ingredient, target crop, or other criteria:  1) click ‘Services’ then on the left choose ‘Other Search Options’, 2) register with CDMS (free), 3) enter the common name (e.g. s-metolachlor, the a.i. in Dual), product type (herbicide, insecticide, etc.), and ‘crop/site’ which is your target crop (e.g. sorghum), and ‘Texas’ at the bottom.  You will then receive a summary of active ingredients, possibly in combination (there are several for s-metolachlor)—make your choice, click ‘Next’ then choose the particular sorghum crop (e.g., grain sorghum, sorghum/sudan, etc.), then you receive the final results—labels comparable to Dual (nine in this example).

 

High Plains

Irrigated Grain Sorghum Seeding Rate Suggestions

Grain sorghum hybrid typically range from about 13,000 to 16,000 seeds per lb., and this differential is a major reason why we do not recommend basing seeding rate on lbs. per acre, especially when you are likely to have an air vacuum planter.

For limited irrigation sorghum:  (6″-8”; typical of many producers in the South Plains & Texas Panhandle) With low soil profile moisture conditions—and there is essentially no profile moisture in most areas in 2012 unless you have pre-watered—target 40,000-45,000 seeds/A, but if soil moisture is good, consider 50,000-55,000 seeds/A.

For full irrigation sorghum:  (12″-16”) Target 68,000-80,000 seeds/A if soil profile moisture is good, but reduce for dry soil.  Cap seeding rates at 80,000 seeds/A in just about any high irrigation scenario, though by late June/early July consider up to 90,000-100,000 seeds/A for non-tillering hybrids or when the development of tillers may cause difficulty with lack of uniform maturity across the field which causes problems at harvest time.  High Plains producers report they regularly achieve 10,000 lbs/A grain sorghum with seed drops of 55,000-60,000 seeds per acre.  “I have learned that is all I need,” notes one Bailey Co. grower.

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