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Fluid Journal : Fall 2016
13 The Fluid Journal Fall 2016 Root Development Maximum Row Number Maximum Kernel Number Kernel Weight SPOON-FEED KQ-XRN TO YOUR CROPS JUST WHEN THEY NEED IT THROUGHOUT THE SEASON. KQ-XRN KQ-XRN KQ-XRN KQ-XRN Kugler Company P.O . Box 1748 McCook, NE 69001 1-800 -445-9116 www.KuglerCompany.com www.KQXRN.com “ WHAT DO YOU MEAN YOU’RE NOT APPLYING KQ-XRN?” With today’s commodity prices, nobody can afford to leave 20 bu/acre on the table. Bankers, Crop Consultants and Producers throughout the Midwest are learning that they can consistently count on a 20 bushel per acre increase in yield when applying 2 gallons of Kugler KQ-XRN per acre at key times when the plant needs it. “ You’re Fired!” KQ-115M.indd 1 12/3/15 10:10 AM Dr. A. (Amy) L. Shober is Associate Professor and Mr. Richard Taylor is Extension Agronomist in the Department of Plant and Soil Sciences at the University of Delaware. any injury impacts module efficiency. Application of N through the irrigation system can prevent equipment damage to the standing crop. • Consider application of B at a rate of 0.05 lb/A in addition to N since some researchers showed a yield benefit of B application. • If possible, save manure for corn. The Figure 3. Soybean nodules with a pink color are actively fixing atmospheric N. Soybean nodules with a green or milky-white color are inactive. Photo credit: Richard Taylor, Univer- sity of Delaware. the soybean fields in Delaware were found to contain strains of Bradyrhizobia that were either very inefficient at fixing N or actually produced toxins that could reduce soybean yield, according to a Delaware Soybean Board project many years ago. Summing up Soybeans are leguminous plants that are able to fix atmospheric N. Seed inoculation with one of the new improved strains of Bradyrhizobia inoculant is recommended. In general, fixed N and soil N should be adequate to meet the N requirements of soybeans. Growers are unlikely to see yield increases from late-season (R3) supplemental fertilizer N in situations where yields are likely to exceed 60 bu/A. In production scenarios where yields are likely to be less than 60 bu/A, application of supplemental N is more likely to result in unnecessary expense and increased environmental impact. soybean crop should still benefit from residual manure N/soil organic matter benefits of the manure. If you must apply manure, keep the rates very low. On average, pre-plant application of 2 tons/A of poultry litter will supply about 114 lbs/A of total N (approximately 68 lbs plant-available N), which exceeds the rate at which N fixation can be impacted. Delaware trials showed that beans receiving manure sometimes ran out of mineralizable N at the beginning of flowering, which can delay before nodulation and N fixation and lead to significant yield reductions. Inoculation In moderate yield scenarios, growers will see more yield benefit from applying one of the new improved strains of Bradyrhizobia inoculant than they would from applying supplemental N. Growers should consider applying one of the new high efficiency strains of Bradyrhizobia to the seed every second or third time soybeans are planted. Many soybean yield trial winners report that they apply fresh inoculum to every soybean crop planted. With the new liquid inoculants, the time and expense of applying soybean inoculant is much less than that experienced in the past. Many of