Reference

Effect of sorption on picloram degradation in soil

Effect of sorption on picloram degradation in soil. Bondarev, V. S.; Spiridonov, Yu. Ya.; Shestakov, V. G. (Vses. Nauchno-Issled. Inst. Fitopatol., Bolshie Vyazemy, USSR). Pochvovedenie, (7), 54-60 (Russian) 1985. CODEN: PVDEAZ. ISSN: 0032-180X. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 19 Adding 2.5 g activated charcoal/kg sod-podzolic soil increased picloram (I) [1918-02-1] adsorption 3.5-fold and retarded I degrdn. This indicates that I is predominantly detoxified in the soil soln. After 179 days of incubation, the concn. of I in the water ext. from charcoal-amended soil exceeded that in the unamended controls. This explains the aggravated aftereffect of I on the fields where I was applied with charcoal to increase the selectivity to susceptible crops.

Thermodynamic characterization of picloram sorption by some soils in the central Asian region

Thermodynamic characterization of picloram sorption by some soils in the central Asian region. Pospeev, V. E.; Logvinenko, L. M.; Ovchinnikova, Z. G.; Mikhailyants, R. S. (Sredneaz. NII Fitopatol., Tashkent, USSR). Agrokhimiya, (7), 97-100 (Russian) 1985. CODEN: AGKYAU. ISSN: 0002-1881. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 19 Increasing the temp. of meadow soil and typical sierozem samples from 5 to 20 to 35° decreased the sorption of picloram [1918-02-1]. The values of std. enthalpy, entropy, and free energy indicate that the sorption of picloram is phys. and spontaneous, and shows a high energy stability. Thus, the exothermic character of picloram sorption decreases the sorption as temps. increase. The picloram-sorbent bonds were stronger in the meadow soil than in the sierozem.