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Water soluble polyacrylamide (PAM) was identified in the 1990s as a highly effective erosion-preventing and infiltration-enhancing polymer, when applied at rates of 1 to 10 kg ML-1 (10 ppm or 10 g m-1) in furrow irrigation water (Lentz et al.,
inhibitor described to date from the rhynchobdellid leech Theromyzon tessulatum. Designated theromin, it was purified to apparent homogeneity by gel permeation and anion exchange chromatography followed by two reverse-phase steps of high pe
