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Evaluation of Nitrogen Stabilizers to Improve Corn Yield and Plant Nitrogen Status By MICHELLE LEINFELDER-MILES | Delta Farm Advisor, UC Cooperative Extension, San Joaquin County Introduction Nitrogen (N) is part of a balanced, natural cycle in the environment among the atmosphere, soil, plants, animals, and water. Nitrogen is the most important element needed by crops, and we often add nitrogen fertilizer to optimize crop productivity. Nitrogen use in agricultural systems must be reported for regulatory compliance under the Irrigated Lands Regulatory Program and the Dairy Order to help ensure that a greater fraction of the applied N is recovered in the harvested crop and not lost to the environment. Nitrogen management gives consideration to the four R’s: • Right source: selecting a fertilizer source that matches with crop need and minimizes losses. • Right rate: applying the right amount based on crop need and nutrient availability through other sources. • Right time: applying the nutrient when the crop can use it. • Right place: fertilizer placement that optimizes the crop’s ability to use it. The four R’s address management considerations (e.g. fertilizer program, irrigation), but site characteristics (e.g. soil, cropping system, weather conditions) also influence N recovery in the crop. Also important to improving crop N recovery is understanding barriers to adopting best management practices, such as costs or risks to crop quality or yield. While the four R’s articulate four principles for nitrogen management, the N cycle in cropping systems is complicated. Nitrogen can be introduced and lost by various paths. We generally add N with fertilizer or Keep Birds Out GUARANTEED “I’ve used Bird Gard for years to protect my growers’ crops and keep birds from damaging the irrigation. Bird Gard works, what more can I say?” Tim Peltzer Peltzer Farm Management Terra Bella, CA Bird Gard is the ONLY bird control with a 1-YEAR UNCONDITIONAL MONEY-BACK GUARANTEE 888-332-2328 www.BirdGard.com Guaranteed Bird Control for over 30 Years! Continued on Page 6 4 Progressive Crop Consultant May/June <strong>2019</strong>
They may be unseen, but they shouldn’t go unnoticed. Nematodes are the invisible threat to almond orchards. Protect your crops from nematode damage with Velum ® One. Protection from wide-spectrum nematode damage. Can increase yield 8.3% with an average of $475/bearing acre. 1 58% average increase in canopy diameter in newly-planted trees. 2 Convenient in-season application via chemigation. For more information, visit www.VelumOne.com. 1 Profit increase based on 2017 almond price/lb. and average yield/bearing acres with 8.3% increase in yield versus untreated over three-year trial, per trial data of five locations with a single application of Velum One at 6.5 or 6.85 fl. oz./A. 2 Velum One applied at 6.5 oz./A, spring 2017, via drip irrigation. Trees planted in January 2017. Increase in green canopy pixels based on an average of two rows of untreated trees compared to an average of two rows of Velum One-treated trees. © 2018 Bayer CropScience LP, 800 North Lindbergh Boulevard, St. Louis, MO 63167. Always read and follow label instructions. Bayer, the Bayer Cross, and Velum are registered trademarks of Bayer. Not all products are registered for use in all states. For additional product information, call toll-free 1-866-99-BAYER (1-866-992-2937) or visit our website at www.CropScience.Bayer.us. May/June <strong>2019</strong> www.progressivecrop.com 5
Page 1 and 2: May/June 2019 Evaluation of Nitroge
Page 3: 4 IN THIS ISSUE Evaluation of Nitro
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Page 21 and 22: Agenda FREE EVENT, PRIZES, EXHIBITO
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Page 27 and 28: Figure 1. Life cycle of walnut husk
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Page 35 and 36: MAY/JUNE 2019 VINEYARD REVIEW In Th
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Page 39 and 40: SIGNS OF A POWDERY MILDEW PROBLEM?
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Page 43 and 44: REGISTERED MATERIAL For Use In Orga
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