William W. Preheim;Monte J. Rans;Nyle C. Wollenhaupt
发明人:
William W. Preheim,Nyle C. Wollenhaupt,Monte J. Rans
申请号：
US12645713
公开号：
US08336469B2
申请日:
2009.12.23
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A transfer chamber assembly for an apparatus and method to precisely meter and dispense two or more crop inputs with a common metering disc. In one embodiment, dry granular or granulized fertilizer is metered from one side of the disc and seed is metered from the opposite side of the same metering disc. The fertilizer is placed in a concentrated “pulse” approximately equal distances between seeds within a common seed furrow and/or between seed furrows to improved nutrient use efficiency by minimizing soil to fertilizer contact and subsequent chemical reactions that make applied supplemental nutrients less available to plants. Pressurized air may be utilized to assist discharge of both the seed and fertilizer from the disc meter to assure precise spacing in the soil. A cover may be placed on the meter and metering disc to recirculate air and thus minimize potential atmospheric contamination from seed coatings and fertilizer materials.
