A Manitoba research project aims to determine the effect of hail damage at various growth stages on soybean maturity, seed yield and quality. PHOTO COURTESY OF KRISTEN MACMILLAN, U OF M. SOYBEANS T OP CROP MANAGER 6 | Soybeans and hail damage Examining the impact at various growth stages By Donna Fleury KNOW. GROW. DECEMBER 2017 • WESTERN/EASTERN EDITION PESTS AND DISEASES 10 Management of corn and soybean nematodes By Carolyn King CORN 44 | Fundamentals matter Top ten agronomy tips for corn growers By Bruce Barker 6 PHOTO COURTESY OF KRISTEN MACMILLAN, U OF M. 10 PHOTO COURTESY OF TAMRA JACKSON-ZIEMS. 44 FROM THE EDITOR 4 Power of precision By Jannen Belbeck TOP CROP SUMMIT 26 2018 Herbicide Resistance Summit preview SOYBEANS 14 Iron deficiency chlorosis management By Bruce Barker 18 20 38 Xtend soybean acreages grow By Bruce Barker What’s new in soybeans (and corn) By Top Crop Manager Starter nitrogen rarely needed By Bruce Barker SPECIAL SECTION: PRECISION FARMING 32 UAVs in agriculture By Madeleine Baerg 36 Build phosphorus fertility with variable rate applications By Bruce Barker ON THE WEB FIGHT HERBICIDE RESISTANCE IN CANADA Stay up-to-date on the latest advances in herbicide resistance research with the Herbicide Resistance Summit, to be held Feb. 27 and 28, 2018 in Saskatoon. Participant will walk away with new insights, technology and tools to protect their crops from the growing threat of herbicide-resistant weeds. 2018 SUMMIT ON THE COVER: HERBICIDE RESISTANCE weedsummit.ca Readers will find numerous references to pesticide and fertility applications, methods, timing and rates in the pages of Top Crop Manager. We encourage growers to check product registration status and consult with provincial recommendations and product labels for complete instructions. TOP CROP MANAGER west / east | December 2017 3 PHOTO COURTESY OF DUPONT PIONEER.