Patent ID: 6200929
Filing Date: 2001-03-13
Classification: A01N

Abstract:
An agricultural chemical composition which comprises one or more of a first component (a) having herbicidal activity and one or more of a second component (b) and optionally one or more of a third component (c);1 part by weight of said component (a) selected from the group consisting ofN-(phosphonomethyl)glycine or a salt thereof,N,N-bis(phosphonomethyl)glycine or a salt thereof,4-(hydroxy(methyl)phosphinoyl)-L-homoalanyl-L-alanyl-L-alanine or a salt thereof, and4-(hydroxy(methyl)phosphinoyl)-DL-homoalanine or a salt thereof;said component (b) selected from the group consisting of(i) 0.001 to 100 parts by weight of a phosphorus acid compound represented by the following formula (I): ##STR15##wherein R.sup.1 represents an unsubstituted C.sub.1-8 alkyl group, a C.sub.1-8 alkyl group substituted with 1 to 3 halogen atoms or 1 to 3 C.sub.1-3 alkoxy groups, a phenyl group or a benzyl group; M represents a hydrogen atom, an unsubstituted ammonium group, an ammonium group substituted with 1 to 4 C.sub.1-3 alkyl groups, a sodium atom, a potassium atom, a lithium atom, a magnesium atom, a calcium atom, a barium atom, a zinc atom, a manganese atom, a copper atom, an iron atom, a nickel atom or an aluminum atom; and m stands for an integer equivalent to the positive valency of M;(ii) 0.01 to 300 parts by weight of a chitosan compound represented by the following formula (II): ##STR16##wherein n stands for an integer of 1 or greater and R.sup.2 represents a hydrogen atom, a C.sub.1-6 alkyl group or a C.sub.1-11 acyl group;(iii) 0.001 to 100 parts by weight of an isopropyl phosphate salt selected from the group consisting of a magnesium salt, barium salt, aluminum salt, calcium salt and iron salt of isopropyl phosphate;(iv) 0.001 to 100 parts by weight of an organic acid metal salt selected from the group consisting of magnesium salts, barium salts, aluminum salts and calcium salts of an organic acid selected from the group consisting of lactic acid, propionic acid, formic acid, acetic acid, levulinic acid, benzoic acid, citric acid, alginic acid, L-(+)-ascorbic acid and salicylic acid, with the proviso that magnesium acetate and calcium acetate are excluded when the component (a) contains N-(phosphonomethyl)glycine or a salt thereof, magnesium ethoxide or aluminum acetyl acetate; and(v) 0.001 to 100 parts by weight of an inorganic metal salt selected from the group consisting of aluminum nitrate, calcium phosphinate, ammonium aluminum sulfate and potassium aluminum sulfate; and0.1 to 500 parts by weight of said component (c) selected from the group consisting ofa plant growth regulator, a fungicide which is an inhibitor of ergosterol biosynthesis, mefluidide, atrazine, pyridate and clopyralid.