Use of N- (2-chloropyridin-4-yl) -N'-phenylurea and N- (3-nitrophenyl) -N'-phenylurea fluorinated as growth promoters in the fruit of Actinidia deliciosa crops.

摘要

Using N- (2-chloropyridin-4-yl) -N'-phenylurea and N- (3-nitrophenyl) -N'-phenylurea fluorinated as growth promoters in growing fruit of Actinidia deliciosa.; the preparation and use of N- (2-chloropyridin-4-yl) described - and N- (3-nitrophenyl) -N'-fluorofenilureas of formulas (I) and (II) respectively, wherein R 1 { }, {2} R, R {3}, {4} R and R {5} are hydrogen atoms or fluorine in all possible combinations, as growth promoters kiwis. Especially effective are the ureas of formula (I, R {2} = R {4} = F, R {1} = R {3} = R {5} = H) and (I, R ^ {1} = {2} R = {3} R = F, R = {4} {5} R = H) at concentrations of 10-25 ppm promote increased weight and size kiwis treated far superior to those obtained with treatment with CPPU (I, R = {1} {2} R = {3} R = R {4} = {5} R = H). Also noteworthy is the similar to the CPPU obtained in the treatment of kiwis with ureas of formula (I, R {3} = F, R {1} = R {2} = R {4} effect R {5} = H), (I, R {1} = R {2} = F, R {3} = R {4} = R {5} = H), (I , R {1} = R {4} = F, R {2} = R {3} = R {5} = H), (II, R {2} = F, R { 1} = R {3} = R {4} = R {5} = H), (II, R {1} = R {2} = F, R {3} = R { 4} = R {5} = H) and (II, R {1} = R {4} = F, R {2} = R {3} = R {5} = H).