Abstract: This disclosure teaches a method for employing novel carbamoylphosphonates such as ammonium ethyl carbamoylphosphonate, ammonium isopropyl carbamoylphosphonate and ammonium allyl carbamoylphosphonate to regulate the growth rate of plants. SPCROSS REFERENCE TO RELATED APPLICATIONSThis application is a division of application Ser. No. 553,423, filed Feb. 26, 1975, now U.S. Pat. No. 3,997,544, which is a division of application Ser. No. 283,769, filed Aug. 25, 1972, now U.S. Pat. No. 3,846,512, which is a continuation-in-part of application Ser. No. 85,221, filed Oct. 29, 1970, now U.S. Pat. No. 3,819,353, which is a continuation-in-part of my application Ser. No. 803,962, filed Mar. 3, 1969, now abandoned, which was in turn a continuation-in-part of my earlier application Ser. No. 731,732, filed May 24, 1968, now U.S. Pat. No. 3,627,507.

Abstract: Compounds having the formula ##STR1## in which R.sub.1 is lower alkyl or lower alkoxy, R.sub.2 is lower alkoxy or methylthio-substituted lower alkoxy, and R.sub.3 is ##STR2## R.sub.4 and R.sub.5 are lower alkyl, m is 1 or 2 and n is 0 or an integer from 1 to 4. The compounds have utility as insecticides and acaricides.

Abstract: .beta.-Haloethanephosphonates and thio derivatives thereof of formula, ##STR1## where X signifies chlorine or bromine,Y signifies oxygen or sulphur,AndZ signifies a carboxylic acid ester or carbamoyl group, or an optionally further substituted methyl or ethyl group substituted by such a group, or signifies an acylmethyl, optionally aryl-substituted alkenyl or alkynyl, cyclic ether, e.g. tetrahydropyranyl, or optionally mono-substituted cyanomethyl group, or signifies an alkyl-, cycloalkyl- or aryl-thio, -sulphinyl or -sulphonyl group, or an optionally further substituted methyl or ethyl group substituted by such a group, or signifies a sulphonic acid ester group, or an optionally further substituted methyl or ethyl group substituted by such a group,Are useful as regulators of plant growth or plant secretion, especially as stimulators of latex flow in latex-forming plants.