Spoon-Feed Crops for a Yield Advantage
Lost fertilizer results in wasted input and potential harm to the environment. Answer Plot® research suggests that spoon-feeding fertilizer throughout the growing season may result in a yield boost, because applying smaller amounts of nutrients when plants need them is more efficient from a plant uptake and use perspective.
Research backs the benefits
Data from 2016 Answer Plot® trials showed a 7.4 bushel per acre yield advantage in corn when a portion of the total nitrogen application was delayed until the V10 growth stage.1 The crop’s need for nitrogen increases rapidly toward the time of tasseling, so it makes sense that a later application would result in a yield bump as the plant begins shifting resources to fill out its ear.
A recent study by Purdue University found that modern corn hybrids have a higher demand for nitrogen later in the season, and thus may more likely benefit from a split application.2 Response-to-nitrogen scores from Answer Plot® trials can help identify corn hybrids that may benefit from spoon-feeding later in the season.
Start with sampling
Any sound fertilizer plan should be based on soil analysis from a quality laboratory. Soil testing guides application of crop nutrients and provides insight into the nutrient status of a field. Once you know what nutrient levels are in your soil, you can start optimizing your fertilization program.
Starter fertilizers like OptiStart® help provide a solid foundation for early plant growth by placing nutrients close to young roots for improved uptake. This promotes more vigorous early-season growth so plants are more tolerant to stress. Answer Plot® research has shown up to a 7 bushel per acre advantage in corn when starter fertilizers are used, especially in colder soils.3
An in-season tissue test will indicate real-time nutrient levels in the plant, which can guide additional fertilizer needs as the season progresses to help protect yield potential. Contact your local WinField United retailer to help develop a season-long fertilization program.
1. Based on an average of 15 Answer Plot® locations.
2. Late Season Nitrogen Fertilizer Placement, Timing and Rate Responses in Modern Corn Hybrids; T. Vyn, et.al.; Purdue University; 2016 Indiana CCA Conference.
3. Based on an average from 37 Answer Plot® locations.
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