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Addressing Soil Variability using air seeders. Jeff Biggerstaff. Introduction. How to determine soil variability How an air seeder works How to use an air seeder for variable rate application Advantages of addressing variability. How to determine variability. Yield Maps
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Addressing Soil Variability using air seeders Jeff Biggerstaff
Introduction • How to determine soil variability • How an air seeder works • How to use an air seeder for variable rate application • Advantages of addressing variability
How to determine variability • Yield Maps • Optical Sensors (i.e. Greenseeker) • Treatment Trials (N-Rich Strip) • Soil Sampling
How an air seeder works • Fan blows seed dropped by air cart to the seeder • Meter rollers drop seeds into seed tubes to be blown to seeder • Ground drive and transmission adjust the rate of meter roller
Advantages/Disadvantages • Prevents over applying inputs in areas which do not need them. • Can be used to treat problem spots in fields to increase yields • Potentially addresses future problems associated with input efficiency • Expensive start up