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English
United States

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Do wetting agents always help water move into soil? We revisit the classic 1962 study The Effect of Wetting Agents on Infiltration by R. E. Pelishek, J. Osborn, and J. Letey, which found that wetting agents improved infiltration in hydrophobic soils but could have little or even adverse effects in …
Can low oxygen in the soil stop turfgrass roots from growing deeper? This video examines the science from “Physical Soil Amendments, Soil Compaction, Irrigation, and Wetting Agents in Turfgrass Management III. Effects on Oxygen Diffusion Rate and Root Growth” by J. Letey, W. C. Morgan, S. J. Richar…
Do wetting agents affect turfgrass growth and soil salinity? This video examines the science from “Physical Soil Amendments, Soil Compaction, Irrigation, and Wetting Agents in Turfgrass Management II. Effects on Top Growth, Salinity, and Minerals in the Tissue” by N. Valoras, W. C. Morgan, and J. L…
Can surfactants harm turfgrass roots and reduce plant growth? This video examines the science from “Effects of Nonionic Surfactants on Monocots” by R. M. Endo, J. Letey, N. Valoras, and J. F. Osborn (1969), published in Agronomy Journal, exploring what this classic research actually found about wet…
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