The invention belongs to the technical field of agricultural chemicals, and particularly relates to an N-(1,3,4-oxadiazol-2-yl)arylcarboxamide compound or a salt thereof, a preparation method, a herbicidal composition and a use thereof. The compound is as shown in the following Formula I:

##STR00001## wherein X represents O, S, SO, SO.sub.2 or NR.sub.1; Y represents halogen, cyano, cyanoalkyl, carboxyl, nitro, etc.; or —X—Y represents unsubstituted or substituted five- or six-membered heterocyclyl or heteroaryl; Z represents hydrogen, halogen, cyano, OR.sub.4, -alkyl-OR.sub.4, —O-alkyl-N(R.sub.5).sub.2, etc., M represents hydrogen, OR.sub.6, SR.sub.6, COR.sub.6, COOR.sub.6, CON(R.sub.7).sub.2, etc. The compound has advantages of a low dosage for use, excellent herbicidal activity, and higher crop safety, especially good selectivity for key crops such as rice.

The invention belongs to the technical field of agricultural chemicals, and particularly relates to an N-(1,3,4-oxadiazol-2-yl)arylcarboxamide compound or a salt thereof, a preparation method, a herbicidal composition and a use thereof. The compound is as shown in the following Formula I:

##STR00001## wherein X represents O, S, SO, SO.sub.2 or NR.sub.1; Y represents halogen, cyano, cyanoalkyl, carboxyl, nitro, etc.; or —X—Y represents unsubstituted or substituted five- or six-membered heterocyclyl or heteroaryl; Z represents hydrogen, halogen, cyano, OR.sub.4, -alkyl-OR.sub.4, —O-alkyl-N(R.sub.5).sub.2, etc., M represents hydrogen, OR.sub.6, SR.sub.6, COR.sub.6, COOR.sub.6, CON(R.sub.7).sub.2, etc. The compound has advantages of a low dosage for use, excellent herbicidal activity, and higher crop safety, especially good selectivity for key crops such as rice.

Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a synthetic auxin herbicide, an auxin transport inhibitor, agriculturally acceptable salts or esters thereof, or combinations thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a synthetic auxin herbicide, an auxin transport inhibitor, agriculturally acceptable salts or esters thereof, or combinations thereof.

Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a synthetic auxin herbicide, an auxin transport inhibitor, agriculturally acceptable salts or esters thereof, or combinations thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a synthetic auxin herbicide, an auxin transport inhibitor, agriculturally acceptable salts or esters thereof, or combinations thereof.

Biopesticide compositions, and methods and kits for their preparation from lignin are disclosed. A biopesticide may include a modified lignin chelated with one or more pesticides, the one or more pesticides having at least one acidic pesticide. The modified lignin may have one or more functional groups. Methods of producing a biopesticide may include obtaining a lignin, contacting the lignin with one or more bacteria under conditions suitable for producing a modified lignin, and chelating the modified lignin with one or more pesticides, the one or more pesticides having at least one acidic pesticide.

Biopesticide compositions, and methods and kits for their preparation from lignin are disclosed. A biopesticide may include a modified lignin chelated with one or more pesticides, the one or more pesticides having at least one acidic pesticide. The modified lignin may have one or more functional groups. Methods of producing a biopesticide may include obtaining a lignin, contacting the lignin with one or more bacteria under conditions suitable for producing a modified lignin, and chelating the modified lignin with one or more pesticides, the one or more pesticides having at least one acidic pesticide.

A crop defence composition comprising a metal complex and a derivative of C.sub.12-C.sub.24 fatty acid, as well as a process for preparing the same and uses for protecting crop against fungi, oomycetes and bacteria, are disclosed.

A crop defence composition comprising a metal complex and a derivative of C.sub.12-C.sub.24 fatty acid, as well as a process for preparing the same and uses for protecting crop against fungi, oomycetes and bacteria, are disclosed.

A crop defence composition comprising a metal complex and a derivative of C.sub.12-C.sub.24 fatty acid, as well as a process for preparing the same and uses for protecting crop against fungi, oomycetes and bacteria, are disclosed.

A natural antibacterial and antiviral biological composition is provided for use in hospitals and homes, in particular a composition that includes ricinoleic acid derived from the extraction of castor oil, diethanolamine and propolis, a method for obtaining the composition, and the use thereof. The invention can be used to control various pathogenic microorganisms, such as bacteria belonging to the Staphylococcus, Pseudomonas, Enterobacter and Bacillus genera; as well as hospital-environment fungi (filamentous and yeast-like) and phytopathogenic fungi (Colletrotichum fragariae). The product can be sprayed on biotic and abiotic surfaces, and non-woven fabric can subsequently be used to remove organic matter, including microorganisms. The product can also be used to disinfect medical, dental and hospital items by immersion followed by quick rinsing.