Response of Cotton to Various Fertilization Histories

• Main Authors: Hofmann, W. C., Else, P. T.
• Other Authors: Silvertooth, Jeff
• Language: en_US
• Published: College of Agriculture, University of Arizona (Tucson, AZ) 1989
• Subjects: Agriculture > Arizona; Cotton > Arizona; Cotton > Soil fertility; Cotton > Management
• Online Access: http://hdl.handle.net/10150/204813

Effects of various fertilization histories on cotton yield were investigated for the fourth consecutive year in the same field at the Maricopa Agricultural Center. Treatments included: 1) no fertilizers added for the past 4 seasons, 2) aggressive nitrogen fertilization in the 1988 season, no fertilization for the previous 3 seasons, 3) standard nitrogen fertilization in 1988 similar treatment for the previous 3 seasons, 4) aggressive nitrogen fertilization in 1988 same history as treatment #3 for previous 3 seasons, and 5) a commercial alternative fertilization program (BioHumaNetics, Inc.). Yields in 1988 were significantly different with treatment 2 having the highest yield followed by treatments 3 and 4, followed by treatment 5; treatment 1 had the lowest yield.