The present application provides an application of quercetin in a plant senescence accelerator, which belongs to the field of plant senescence accelerators and its application, and can prepare a plant senescence accelerator by using quercetin and apply the accelerator in practical production to accelerate the senescence process of plant particularly crop leaves. The quercetin plant senescence accelerator is prepared by mixing a quercetin mother solution with a 1/2 MS solution of 2-(N-morpholino)ethanesulfonic. In the present application, by adopting directly spraying method, the senescence process of plant leaves can be accelerated, and will not cause additional adverse reactions to plants.

The present application provides an application of quercetin in a plant senescence accelerator, which belongs to the field of plant senescence accelerators and its application, and can prepare a plant senescence accelerator by using quercetin and apply the accelerator in practical production to accelerate the senescence process of plant particularly crop leaves. The quercetin plant senescence accelerator is prepared by mixing a quercetin mother solution with a 1/2 MS solution of 2-(N-morpholino)ethanesulfonic. In the present application, by adopting directly spraying method, the senescence process of plant leaves can be accelerated, and will not cause additional adverse reactions to plants.

The present invention relates to N-acylimino compound of formula (I): ##STR00001##
wherein X is O or S, in particular O; Y is a single bond, O, S or NR.sup.5; Het is a 5 or 6 membered carbon-bound or nitrogen-bound heterocyclic ring, W.sup.1-W.sup.2-W.sup.3-W.sup.4 represents a carbon chain group connected to N and C═N, and thus forming a saturated, unsaturated, or partially unsaturated 5 or 6 membered nitrogen containing heterocycle, wherein W.sup.1, W.sup.2, W.sup.3 and W.sup.4 each individually represent CR.sup.vR.sup.w; R.sup.1, R.sup.2 may be hydrogen, halogen, etc.; R.sup.3 may be hydrogen, CN, C.sub.1-C.sub.6-alkyl, etc.; R.sup.4 may be of hydrogen, C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkenyl, C.sub.2-C.sub.6-alkinyl, C.sub.3-C.sub.8-cycloalkyl, Q-phenyl, Q′-O-phenyl, Q′-S-phenyl, where the phenyl ring is optionally substituted with one or more, e.g. 1, 2, 3, 4 or 5 identical or different substituents R.sup.10, and the moieties Q-Het.sup.#, Q′-O-Het.sup.# and Q′-S-Het.sup.# where Het# represents a heterocyclic radical and where Q and Q′ are C.sub.1-C.sub.6-alkandiyl, C.sub.2-C.sub.6-alkendiyl, or C.sub.2-C.sub.6-alkyndiyl, and where Q may also be a single bond; R.sup.3 and R.sup.4 together may also may also a bivalent radical, selected from the group consisting of C.sub.2-C.sub.5-alkandiyl, C.sub.2-C.sub.5-alkendiyl, Q″-C.sub.1-C.sub.4-alkandiyl and Q″-C.sub.2-C.sub.4-alkendiyl, where Q″ is O or S. The invention also relates to the use of the N-acylimino heterocyclic compounds, their stereoisomers, their tautomers and their salts, for combating invertebrate pests. Furthermore the invention relates also to methods of combating invertebrate pests, which comprises applying such compounds.

The present invention relates to N-acylimino compound of formula (I): ##STR00001##
wherein X is O or S, in particular O; Y is a single bond, O, S or NR.sup.5; Het is a 5 or 6 membered carbon-bound or nitrogen-bound heterocyclic ring, W.sup.1-W.sup.2-W.sup.3-W.sup.4 represents a carbon chain group connected to N and C═N, and thus forming a saturated, unsaturated, or partially unsaturated 5 or 6 membered nitrogen containing heterocycle, wherein W.sup.1, W.sup.2, W.sup.3 and W.sup.4 each individually represent CR.sup.vR.sup.w; R.sup.1, R.sup.2 may be hydrogen, halogen, etc.; R.sup.3 may be hydrogen, CN, C.sub.1-C.sub.6-alkyl, etc.; R.sup.4 may be of hydrogen, C.sub.1-C.sub.6-alkyl, C.sub.2-C.sub.6-alkenyl, C.sub.2-C.sub.6-alkinyl, C.sub.3-C.sub.8-cycloalkyl, Q-phenyl, Q′-O-phenyl, Q′-S-phenyl, where the phenyl ring is optionally substituted with one or more, e.g. 1, 2, 3, 4 or 5 identical or different substituents R.sup.10, and the moieties Q-Het.sup.#, Q′-O-Het.sup.# and Q′-S-Het.sup.# where Het# represents a heterocyclic radical and where Q and Q′ are C.sub.1-C.sub.6-alkandiyl, C.sub.2-C.sub.6-alkendiyl, or C.sub.2-C.sub.6-alkyndiyl, and where Q may also be a single bond; R.sup.3 and R.sup.4 together may also may also a bivalent radical, selected from the group consisting of C.sub.2-C.sub.5-alkandiyl, C.sub.2-C.sub.5-alkendiyl, Q″-C.sub.1-C.sub.4-alkandiyl and Q″-C.sub.2-C.sub.4-alkendiyl, where Q″ is O or S. The invention also relates to the use of the N-acylimino heterocyclic compounds, their stereoisomers, their tautomers and their salts, for combating invertebrate pests. Furthermore the invention relates also to methods of combating invertebrate pests, which comprises applying such compounds.

Provided is a method which exerts an excellent effect in controlling a pest in a field of soybean, corn or cotton, using a SDHI compound and a PPO-inhibiting compound. A method of controlling a pest (a weed and/or a plant pathogen) in a field of soybean, corn or a cotton, including treating a field before, at or after seeding with a seed of soybean, corn or cotton treated with one or more compounds selected from the group consisting of SDHI compounds, with one or more PPO-inhibiting compounds selected from the group consisting of flumioxazin, sulfentrazone, saflufenacil, oxyfluorfen, fomesafen and a compound of the formula: ##STR00001##

Provided is a method which exerts an excellent effect in controlling a pest in a field of soybean, corn or cotton, using a SDHI compound and a PPO-inhibiting compound. A method of controlling a pest (a weed and/or a plant pathogen) in a field of soybean, corn or a cotton, including treating a field before, at or after seeding with a seed of soybean, corn or cotton treated with one or more compounds selected from the group consisting of SDHI compounds, with one or more PPO-inhibiting compounds selected from the group consisting of flumioxazin, sulfentrazone, saflufenacil, oxyfluorfen, fomesafen and a compound of the formula: ##STR00001##

Provided is a method which exerts an excellent effect in controlling a pest in a field of soybean, corn or cotton, using a SDHI compound and a PPO-inhibiting compound. A method of controlling a pest (a weed and/or a plant pathogen) in a field of soybean, corn or a cotton, including treating a field before, at or after seeding with a seed of soybean, corn or cotton treated with one or more compounds selected from the group consisting of SDHI compounds, with one or more PPO-inhibiting compounds selected from the group consisting of flumioxazin, sulfentrazone, saflufenacil, oxyfluorfen, fomesafen and a compound of the formula: ##STR00001##

Disclosed are compounds of formula (I) which possess pesticidal, especially nematicidal properties wherein in the structural elements have the meaning as indicated in the description. ##STR00001##

Disclosed are compounds of formula (I) which possess pesticidal, especially nematicidal properties wherein in the structural elements have the meaning as indicated in the description. ##STR00001##

A synergistic microbicidal composition having two components. The first component is a nonionic surfactant with structure: R.sup.2O(CH.sub.2CH(CH.sub.3)O).sub.3(CH.sub.2CH.sub.2O).sub.5H, where R.sup.2 is a mixture of C.sub.8-C.sub.14 linear alkyl groups. The second component is 2-bromo-2-nitropropane-1,3-diol. The weight ratio of the nonionic surfactant to 2-bromo-2-nitropropane-1,3-diol is from 1:0.08 to 1:0.12 or 1:0.2 to 1:1.8286.