How to Decipher if a Product is as Good as it Claims. Chad Godsey Notill Oklahoma 2013

Transcription

1 How to Decipher if a Product is as Good as it Claims Chad Godsey Notill Oklahoma 2013

2 Yield (lb/ac) Winter Canola Yield from TRT Yield No significance difference No TRT Comp 1 Comp 2 Star Treatment

3 Yield (lb/ac) Winter Canola Yield from TRT 1650 Yield This is awesome stuff! No TRT Comp 1 Comp 2 Star Treatment

4 Today s World Producer s are bombarded with products for all aspects of crop production. How can we tell if they really work?

5 Things to Consider Has the company supported third party research? University trials Ask how trials were done? Replicated and statistics applied What was the yield potential environment

6 Specific P - Polyphosphates vs. orthophosphates Nutrient stabilizers or humic acids Tissue testing Low salt products

7 P is Essential Everyone understands that phosphorus (P) is essential for crop growth. P exists as either orthophosphate or polyphosphate or a combination of both in fertilizers. The fact that P in fertilizers is present in either form, of course, leads to a variety of "sales" claims. Plants absorb or take up P in the orthophosphate form

8 Poly vs. ortho In general, P in dry fertilizers such as and is present as orthophosphate. In contrast, the P in common fluid fertilizers such as and is present as both orthophosphate and polyphosphate. Approximately 2/3 of the P is present in the polyphosphate form. The remainder is orthophosphate. Some fluid fertilizers such as the materials, however, have all of the P present in the orthophosphate form. The effect of both forms of P on crop production has been evaluated in various field trials throughout the Corn Belt. The results from a study with corn in Nebraska are summarized in the following table.

9 The effect of polyphosphate and orthophosphate on corn yield Source: University of Nebraska ave of 5 sites; low P test P Source P 2 O 5 Applied polyphosphate orthophosphate lb/acre bu/acre

10 24

11 Summary from P P in either , , etc. should be hydrolyzed to orthophosphate within a week after application. The availability of P in , , , , and should be equal. So, performance of should be equal to the performance of or Use of liquid and dry fertilizers as equivalent materials applied at the same rates should have an equal effect on crop production. Results of various field trials have shown that this is the case. You should not base choice of fertilizers on orthophosphate or polyphosphate claims.

12 N Stabilizers-Humic Acid Post: Wondering what everyone's opinions are on using it with liquid n top dressing winter wheat to help stretch out or hold the n longer, also helping stand ability? (MO) How much does it cost an acre? With 60-70cent N how much more N could you apply for the same cost? (MI) If my calculations are correct, At $365 per ton for 28 %, I could put an additional 21 pounds of actual N on for the cost of.9 of a gallon of X-Cell. I find it kinda hard to believe X-Cell will benefit me that much. Frankly, I might be better off just to apply the extra 21 pounds of actual N. Some test strips for three or four years would be a good trial gals. 28% gals. 28% with.9 gal. of X-Cell gals. 28% (MO) You really only need 1/10 rate or what ever makes you feel good because that's what its really good for, making you feel better.

13 On-line Forums (TX) Original Post: Been raining since I planted corn. I put 10 gpa of with plans to follow the planter with 10 gpa Started raining before we could get it on. Plan on side-dressing when we can,. The corn is getting in the v3 v4 stage. Dealer said He got some FOILAR I could put on by air at 1.5 to 2 gpa. 60% chance of rain tomorrow. Would this help until I can side-dress. The corn has had over 10 inches since planted. Not as green as I would like to see. (MN) It will help the dealers sales. Not your corn. Just spread 125 pounds of ams and be done in a hurry before the rain Save your money don't do it. Fly on urea or Ammonium nitrate if you need N or wait and sidedress when it drys up. Been there done that! (MD) Yeah they tried to sell me on that stuff. Told me they could fly on 2 gallons and it would be like sidedressing 60 lbs of n. Whatever. Its a scam

14 continued (NE LA) Sounds like they are selling Nitamin, which is pretty neat stuff where I have seen it used. But it also sounds like you have plenty of time, and corn goes through a yellow stage anyway, maybe you're just nervous. Get your side dress or topdress out first chance you get. (Idaho) I agree with the last poster...it sounds like the yellowing has more to do with the anaerobic conditions rather than N deficiency. V-3-V-4 is typically when the ear is beginning to form, so any deficiency from this point on could be yield limiting. I would suspect that you would probably get a better response out of a phosphate foliar in this situation to push root and shoot growth, but the only way to know if a foliar application of any product is needed is to take a petiole sample to see if any nutrients are lacking in the plant.

15 Growth Regulators Plant growth regulators (also known as growth regulators or plant hormones) are chemicals used to alter the growth of a plant or plant part. Hormones are substances naturally produced by plants, substances that control normal plant functions, such as root growth, fruit set and drop, growth and other development processes.

16 Plant growth regulator class, associated function(s) and practical uses. Auxins Gibberellins Cytokinins Class Function(s) Practical uses Ethylene generators Growth inhibitors Growth retardants Shoot elongation Stimulate cell division and elongation Stimulate cell division Ripening Stops growth Slows growth Thin tree fruit, increase rooting and flower formation Increase stalk length, increase flower and fruit size Prolong storage life of flowers and vegetables and stimulate bud initiation and root growth Induce uniform ripening in fruit and vegetables Promote flower production by shortening internodes Retard tobacco sucker growth

17 Tissue Testing and Low salt products Tissue testing/foliar feeding Come on man! Has to be used correctly and is a good diagnostic tool. Low salt Can increase in-furrow application but 1 lb of N is still 1 lb of N

18 Take Home Do not worry about the small thing until you take care of the big things (seeding rate, cultivar selection, rotation, ph, N, P, and K). 1 lb of N is one pound of N, the same can be said for any other nutrient. Figure how many pounds of product you are applying per acre. Do replicated on-farm testing! There are no magic bullets! Do not rely solely on forums to get an unbiased opinion!