Table 1.

Phosphite product manufacturer, formulation, product type, application method, and treatment rates for Experiment 1 and 2. ai (active ingredient).

TreatmentManufacturerFormulationProduct typeApplicationRate (g ai/ft2)
Non-treated—————
Fortiphite1Plant Food Co., Inc.Soluble concentrateFertilizerDrench0.317
Phosphite tablet2Doggett Corp.Slow-release tabletFertilizerSoil-dispersed0.4
Reliant Dry Phite 28G3Quest Products Corp.GranuleFertilizerBroadcast4.6
Reliant LQuest Products Corp.Soluble concentrateFungicideDrench0.441

  • ↵1 Generic fertilizer formulation of PolyPhosphite 30 (Plant Food Company, Inc, Cranbury, NJ, USA) 0-0-27.

  • ↵2 Proprietary, experimental fertilizer formulation from Doggett Corp. (Lebanon, NJ, USA) with unknown N-P-K breakdown.

  • ↵3 Fertilizer formulation of 0-0-7.