The practice of composting mixed green wastes from community collection programs has been on the increase as a means to reduce organic debris to landfills. Recent reports of plant injury have appeared and were attributed to residues of the herbicide clopyralid in compost. Phytotoxicity issues with compost have been reported previously to result from other factors, including heavy metal content,...

The soluble inorganic salts of fluoride are recognized to be highly toxic when administered parenterally or per os to animals or humans.15' 18,20 When taken in sufficiently large amounts such compounds may prove fatal within a matter of minutes. The fluoride ion appears to be an enzyme poison. 9'22' 34 It is known, for example, that fluoride added to suitable preparations of tissues or plants i...

The paper presents the results of synthesis, IR spectroscopic and agrochemical study products adduct formation (internal salts) urea with nitric orthophosphoric acids. It has been established that synthesized substances are hygroscopic, readily soluble in water. spectral data indicate that, depending on “acid : urea” ratio final CO, NH2, groups acid molecules involved various compositions: [H 2...