BE548857A - - Google Patents

Description

       

   <Desc / Clms Page number 1>
 



   When growing potatoes, especially field crops, it is advantageous to destroy the potato grass before harvesting to facilitate harvesting and to prevent the transmission of viruses and Phytophtora infestans to tuber- Another advantage lies, for example, in the possibility of bringing in the potatoes as early as possible and preventing the production of too large tubers in the case of seed potatoes. In recent years, we replaced the kidnapping

 <Desc / Clms Page number 2>

 Manual of potato grass by chemical spray extermination This could save a lot of manpower. In general, products have been applied for this purpose which are not entirely safe for warm-blooded beings.



     However, the Applicant has discovered that the same effect could be obtained by applying a mixture which is almost non-toxic to warm-blooded beings, which is composed of salts of mono- acids and which and which contains a prepon- derivative of the first acid. Particular mention will be made of the salts of the alkali and alkaline earth metals, of magnesium, of nickel, of copper and of ammonia, as well as the salts with lower organic bases.



   The effect of salts of mono- and trichloroacetic acids, which is already good! further increased by addition of trifluoromethylphenols which are advantageously substituted by a nitro group. It has been found to be particularly advantageous to use 2-trifluormethyl-4-nitrophenol or 3-trifluomethyl-1-4-ni trophenol as well as salts with mono- or bivalent metals, ammonia, xxxx amines aliphatic and aromatic. These phenol derivatives behave towards warm-blooded beings in a considerably less toxic manner than the products usually used for the extermination of potato grass by blasting. The toxicity is further reduced by incorporating the phenols in relatively small percentages into the product of the present invention.



   The destruction of the potato grass should be completed in as short a time as possible so that the treatment can be carried out relatively late and combine the advantage of an early harvest (eg. (prevention of infection of the tuber by vires or Phytophthora) with that of intense ripening of the tubers. This requirement is fulfilled in the most perfected manner by the products

 <Desc / Clms Page number 3>

 
 EMI3.1
 containing phenol, because 1 (38 Lri ± luormélJliyl-n1l3rophenoli show an extraordinarily rapid herbicidal effect.



   A water soluble sprinkler agent is required to dissolve quickly and without leaving a residue. This can be achieved by the addition of ammonium amidosulfonate in combination.
 EMI3.2
 sound with the usual mixtures and wetting agents. Ammonium amidosulfonate not only facilitates and accelerates the solubility of phenols and their salts but also in turn promotes, p; . its herbicidal character, the destruction of potato grass. As dispersants, methyltaurine oleylamides and lignin tallow wadding are advantageously used. To increase the wetting effect, it is advantageous to use powdered ionogenic wetting agents, such as alkyl-naphthalene sulfonates.

   Non-ionogenic and liquid wetting agents are less suitable, as they promote agglutination of the mixtures,
The adhesive power can be further improved by the addition of swelling substances and water soluble resins such as carboxymethyl cellulose or polyvinyl alcohol.



   The products according to the present invention can also be used for the extermination of weeds. The agents, preferably those which contain trifluormethyl-nitrophenols, can be applied with advantage as total herbicides in cases where a rapid effect is to be obtained.



  EXAMPLE 1
 EMI3.3
 3-Trifluormethyl-1-nitro-phenol 10% sodium monochlorracetate 70 / d ammonium amidosulfonate 10% sodium carbonate, .cale .. 4%
 EMI3.4
 "'Carboxymethylcelluloc9 -, 0-taurine-leylamide 2 sodium alkyl-naphthalene sulfonate 2%
 EMI3.5
 The quantity used increases to 10 - 10 k / ha, dissolved in the usual quantity of water.

 <Desc / Clms Page number 4>

 EXAMPLE 2
 EMI4.1
 -Trifluorntcthyl-4-nitro-phenol 1G, - sodium mono chloroacetate 50% sodium trichloroacetate 15%
 EMI4.2
 , ru.15 ammonium idosulfonate; sodium carbonate, calc. 3i; carboxymethylcellulose 2 ;. taurine oleylamide 2% sodium alkyl naphthalene sulfonate 2% The amount used is also 10 - 20 kg / ha.



  EXAMPLE
 EMI4.3
 2-Trifluormethyl-4-nitro-phenol, ammonium salt 20% sodium monochloroacetate 52% ammonium amidosulfonate 15% carboxymethylcellulose 3% ammonium lignin sulfonate 8% sodium alkyl-naphthalene sulfonate 2% The quantity used is 8 15 kg / ha.



  EXAMPLE 4
Sodium monochloroacetate 70.05
 EMI4.4
 sodium trichloranetate 28 e 5cli polyvinyl alcohol 0.5% sodium alkyl naphthalene sulfonate 1.0% The amount used is 30 - 50 kg / ha.


    

Claims (1)

ABSTRACT The present invention comprises in particular: 1 A product for the extermination of potato grass and weeds of all species which contains, EMI4.5 as a herbicidal component, a mixture of the salts of pliiono- and trichloroacetic acid with a major proportion of the first acid. <Desc / Clms Page number 5> EMI5.1 ;; 1) ,; ljij, j $ = .ô; = '' '.' l'l.'udn = i \ 1 :; ,; j: Ec5.i. LG # i: <. I -. ;; 1 (..,, - .., .. prcpenber 1.as: ll'lulCl.l.L3.C'll .., '', .plil.Ilrlc'i, X ': ItiC ::::, , 1j. = .. ± r.; <: I: f. Or according to the various combinations, T) O.¯: i2WW a) the product contains, in addition, 1; oiv4rF = 5 d'j firī ' 17: oriiietliyl-nitrophéiiol with one or two, pr'6fcraij'l ',: uent a ,,, J <cJ.jj. <3 nitrated, or their salts with mono- or bivalent metals, ammonia, aliphatic or aromatic amines. EMI5.2 b) the product additionally contains CG111β0 ..: an additional herbicide. and for the increase it has the solubility in water, of I. t, mido-sulfona t; e ammonium. c) the product contains dispersing agents and so on EMI5.3 wetting, preferably o.4yl.al: lities of methyltaurine, lignin sulfonic acids and alkyl-naphthalene sulfonates. d) the product contains adhesive agents, preferably carboxymethyl cellulose or polyvinyl alcohol