Spreading Uniformity of Granular Bulk-Blended Fertilizer

K. L. Wells, D. L. Terry, J. H. Grove, W. E. Brinkley, M. F. Broder

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This study was conducted to measure the field variability in nutrient rate of bulk blended granular fertilizer that was spread with a double-spinner, ground driven spreader. The objective was to determine if such variation affected corn (Zea mays L.) yield and nutrient concentrations. Studies were conducted at two sites in Kentucky during 1987 to test the agronomic effects of varying granule size of urea (U) and diammonium phosphate (DAP) when they were blended with muriate of potash (KCl) to prepare a bulk-blended mixed fertilizer. The control (uniform blend) blend components were all of the same granule size (2.0-3.36 mm). Two blends of identical analysis were prepared by using smaller (1.4-2.0 mm) granule sized U (fine urea) or DAP. Each of the three blend treatments was spread in swath widths of 12.19 m. Measurements were made every 2.44 m across the swath to measure rate of nutrient application, 10-leaf stage growth of corn, ear leaf nutrient concentration of corn, harvest stand population, and grain yield. Despite measurable differences in applied nutrient rates due to the use of fine U and fine DAP as compared to the uniform treatment, there were no significant treatment effects on corn grain yields.

Original languageEnglish
Pages (from-to)1731-1751
Number of pages21
JournalCommunications in Soil Science and Plant Analysis
Volume23
Issue number15-16
DOIs
StatePublished - Sep 1 1992

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science

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