Method for improving selectivity of 1,3-cyclohexanedione herbicide
A cyclohexanedione, selective technology, applied in the direction of herbicides and algicides, botany equipment and methods, biocides, etc., can solve the problems of phytotoxicity and so on
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Embodiment 1
[0044] All metal chelates used in the 1,3-cyclohexanedione formulations of this example were prepared by the mixed milling method, with the exception of Formulation C, which was prepared by the precipitation method. Both the mixed milling and precipitation methods are described in detail in PCT Application 97 / 27748, the contents of which are incorporated herein by reference.
[0045] The seeds of the following plant species were sown in aluminum trays (containing soil consisting of 2 parts of sandy loam and 1 part of peat), and 12 days later, these plants were sprayed with 1,3-cyclohexanedione suspension ( The application rates are listed in Table I below): Galium aprine ("GALAP"); Chenopodium album ("CHEAL"); Matricaria inodora ("MATIN"); and wheat.
[0046] The aluminum pans were placed in the greenhouse and evaluated on days 6 and 21 after application ("DAA"). Injury was evaluated as percent control, which is the total damage to plants caused by all factors including: inhi...
Embodiment 2
[0054] In this example 1, the metal chelate used in the 3-cyclohexanedione suspension was prepared by the mixed grinding method described in Example 1. Furthermore, aluminum trays containing the following species were post-emergence applied with 1,3-cyclohexanedione suspension concentrate (amounts applied are listed in Table II below) using essentially the same method as described in Example 1: CHEAL; Amaranthus retroflexus ("AMARE"); Polygonum convolvulus ("POLCO"); Brassica kaber ("SINAR"); Thlaspi arventse ("THLAR"); ) (“BRSNN”); wheat (“TRZAS”); and barley (“HORVS”). Lesions were assessed at the 8th and 32nd DAA.
[0055] The observations (average of 4 replicates) are summarized in Table II below.
[0056]
[0057] These results indicate that the copper chelate of 2-(substituted benzoyl)-1,3-cyclohexanedione, Formulation J, was more effective in earlier trials on wheat growth compared to the unchelated formulation (Control 2). Selective increase 16X. The weed contro...
Embodiment 3
[0059] The metal chelate used in this Example 1, 3-cyclohexanedione formulation was prepared by the mixed milling method described in Example 1. Control 3 and Formulation K were formulated as suspensions, while Formulation L was formulated as microcapsules.
[0060]Aluminum trays containing the following plant species were post-emergently applied the 1,3-cyclohexanedione formulation (application rates are listed in Table III below) using essentially the same method as described in Example 1: AMARE, BRSNS, POLCO, SINAR and TRZAS. Lesions were assessed at the 6th and 22nd DAA.
[0061] The observations (average of 4 replicates) are summarized in Table III below.
[0062]
[0063]
[0064] The above data indicate that the copper chelate of 2-(substituted benzoyl)-1,3-cyclohexanedione (Formulation K) exhibits improved selectivity compared to the unchelated formulation (Control 3). These data also demonstrate that the selectivity of the copper chelate of 2-(substituted ben...
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