1999 Missouri Winter Wheat Performance Tests McKendry, Sweets, Wright, Tague, Salzman, Mattas Agronomic Practices ------------------- Basic agronomic practices are given in Table 4 by location. Nitrogen was applied in split fall/spring applications. Spring nitrogen applications were generally made at or shortly after initial green-up (Feeke's GS 6). Preplant phosphorous and potassium applications were based on soil test recommendations provided by the University of Missouri's Soil Testing Laboratory located at Columbia or by a similar private soil testing facility. Location 1998 Fertility Management 1999 Predominant Previous Planting N Harvest soil type(s) crop date Fall Spring Total P2O5 K2O date - lb/acre - ----------------------------------------------------------------------------- Northern -------- Columbia Mexico silt loam soybeans October 13 30 58 88 55 32 June 30 Novelty Putnam silt loam soybeans October 9 40 60 100 50 60 July 02 Trenton Grundy silt loam soybeans October 14 36 86 122 150 250 July 08 Southwest --------- Lamar Parsons silt loam soybeans October 16 27 80 107 99 90 July 07 Mt. Vernon Gerald silt loam soybeans October 15 40 80 120 40 40 June 22 Southeast --------- Charleston Sharkey silty clay loam wheat October 21 18 88 106 46 90 June 18 Portageville Tiptonville silt loam soybeans October 22 40 100 140 - - June 15 ----------------------------------------------------------------------------- Due to excessive rainfall at harvest, the hard red winter wheat test at Mt. Vernon was not harvested until July 6.