DD142283A1 - MEANS FOR REGULATING PLANT GROWTH - Google Patents

Abstract

The invention relates to agents for regulating plant growth, in particular for stabilizing and increasing the yield in cereal crops. As active ingredient they contain 2-chloroethane phosphonic acid, (2-chloroethyl) trimethyl ammonium chloride and copper

Description

21 1637

"VEBGHEMIEEOIiBINAO] BITTEEFELD - Bitterfeld, 15. 3. 1979

• 1989

WP A G1 N / 211 637 Regulators; of plant growth

Field of application of the invention

The invention can be applied in horticulture and agriculture, in particular for stabilizing and increasing the yield in cereal crops.

Characteristic of the known technical solutions

Growth regulatory properties have recently become known from numerous substances. Also 2-Ghloräthanphosphonsäure and (2-Ghloräthyl) -trimethyl-ammonium chloride and their combination have been proposed, for example, for haem stabilization in cereals.

Object of the invention

The aim of the invention is to develop new combinations as a means of regulating plant growth, which in particular in cereal crops lead to an increase in yield and are able to extend the time-limited application date, for example in wheat.

- 2 - ^ 1637 1989

Presentation; the essence of the invention

This object is achieved in that the means for regulating the plant growth, in particular for JRtragsstabilisierung and increase in cereal crops, in addition to conventional excipients and carriers as the active ingredient, a combination of 50 to 80 wt.% 2-Chloräthanphosphonsäure, 20 to 40 wt % (2-chloroethyl) -trimethyl-ammonium chloride and 2 to 12% by weight of copper (II) sulfate, but preferably in a weight ratio of 6: 3 J 1.

It has surprisingly been found that the application of (2-chloroethyl) -trimethyl-ammonium chloride in wheat from residue toxicological reasons limited to the 5-leaf stage application date can be significantly extended using the combinations of the invention, in the extreme case up to stage 9 of the cereal according to the FEEKES scale. In this case, the application rate of (2-chloroethyl) -trimethyl-ammonium chloride is reduced to a minimum due to huiaantoxikologischen considerations. Decisive for the intended effect are the application rate of active substance and the stage of development of the cereal at the time of application.

The application of the agents according to the invention is advantageously carried out in the preparation and application forms customary for means for biological process control, such as solutions, emulsions, concentrates which, with the addition of liquid carriers or diluents, usually with the addition of surfactants and other formulation auxiliaries and for use with V / asser can be diluted.

The application forms depend on the intended use. In any case, they have to ensure a fine distribution of the active substances. The preparations are prepared in a manner known per se by mixing processes. The compositions according to the invention, depending on their intended use, are used in amounts of from 0.5 to 2.5 kg / ha, preferably 1.5 kg / ha. ·

  27.JÜL1979 * 8 () 2fviü "

- 3 - 2.1 1 63 7 1989 '

embodiments Example 1 :

Influence on the length growth of summer wheat by the agents according to the invention

In a climatic room, Hatri spring wheat plants were treated with 2-chloroethanephosphonic acid (A), (2-chloroethyl) trimethylammonium chloride (B), Eupfer's (II) sulphate (G) and combinations of these substances.

The test solutions were poured into Petri dishes and the leaf blades of the 14 day old plants were slowly pulled through the solution. This form of application necessarily requires the addition of wetting agents for cereals.

After draining, the plants were returned to the culture vessels. Four weeks after the start of germ evaluation was carried out by the green mass in relation to the untreated control and the distance between the 1st and 2nd leaf blade were determined.

As can be seen from Table I, a combination of 2-chloroethanephosphonic acid, (2-chloroethyl) -trimethylammonium chloride and copper (II) sulfate with respect to the KombinatioDS partners and combinations of 2-Chloräthanphosphonsäure plus (2 ~ chloroethyl) - trimeth7l-ammonium chloride can be achieved a strong increase in mass formation. This is remarkable in that at the same time the growth in length is also reduced more than in the individual components and as in the two-combination of 2-Ghloräthanphosphonsäure plus (2-chloroethyl) -trimethyl-ammonium chloride

 This is clear from the values in Table II.

If the combination effect is calculated according to the method of COLBY,

E.

100 ⁿ - ¹

η - number of combination partners

2o = relative liquor induced by compound A at the dose a

0 7 Uli - (Π; n ..,

- 4 - 2 1 1 63 7 1989

= relative length induced by compound B at dose b

= relative length induced by compound G at dose c

= Additive effect of the combination a + b + c

= Experimentally determined relative length of the combination A + B + C with the doses a + b + c,

Thus, according to the values of Table III, the increase in the effect of the combination of 2-chloroethane-phosphonic acid plus (2-chloroethyl) -trimethyl-ammonium chloride plus copper (II) sulfate compared to the individual components and the combination of 2-Chloräthanphosphonsäure plus (2-chloroethyl ) -trimethylammonium chloride clearly to reduce a synergistic effect. Because after COLBY is a synergism, if E ₁₁ > · Ep is.

Example 2:

Influence on yield of the agents according to the invention

The combination of 2-chloroethane-phosphonic acid, (2-chloroethyl) -trimethylammonium chloride and copper (II) sulfate in a ratio of 6: 3 * 1 is in 1977 in winter wheat of the varieties "Mironowskaja 808" (3 experiments) and "Alcedo" ( 2 trials) and in 1978 on the variety "Mironowskaja 808" (3 trials) with 1; 1.5 and 2 kg / ha have been tested in exact plot experiments.

The experiment was carried out in 4-fold repetition

ρ parcels of 25 m size. As application date 1977 the stage 7 of the wheat after the! E ¹ EEKES scale (Fe 7) was selected, in 1978 the stages Fe 6 and Fe 9. The yield results are based on 86% dry matter. The test evaluation was carried out by analysis of variance.

When using the agents according to the invention in all experiments compared to the untreated control a significant 'and statistically assured increase in yield to demonstrate (see Tables IV, V and VI). The application can already

July 27, 19/9 * 80251 ;;

- 5 - 21 163 7 1989

at stage Fe 6, but also at stage Ee 9. At a later date, application performance is usually better (see Table VI); an optimal effect is to be expected after previous experience with application in the stage Fe 7 / Q.

For long-straw wheat varieties such as "Mironowskaja 808" experience has shown that the use of 2 kg / ha (2-chloroethyl) trimethyl ammonium chloride or 2 kg AS of the combination of 2-Ohloräthanphosphonsäure plus (2-Ohloräthyl) - for optimal Halmstabilisierung and yield protection trimethyl-ammonium chloride (2: 3) according to DE-PS 115 313) necessary. With the above combination is due to synergistic effects already with 1 kg / ha total active ingredient amount a very good and safe yield increase possible.

Example 3:

Halmverkürzende and halm stabilizing properties of

agents according to the invention

The consisting of 2-chloroethane-phosphonic acid, (2-chloroethyl) -trimethylammoniumchlorid and Kupf er (II) sulfate in the ratio 6: 3 · '1 existing combination, tested according to the experimental methodology shown in Example 2, has good Halmverkürzende and halmstabilisierende Effects (see Tables VII, VIII and IX). When used in an advanced stage of development of V / eizens are usually the effects stronger, which may be based on previous experience of the application date between Fe 6 and Fe 9.

In Tables I to IX mean:

A = 2-Chloräthanphosphonsäure B = (2-chloroethyl) -trimethyl-ammonium chloride and C = copper (II) sulfate

Table I: Influence of green mass formation by

the agents according to the invention

Green mass concentration relative to control (%)

.mg / 100 ml _AB C 1 O 1: 1 3: 1 3: 1: 1 6: 1: 1

A + B A + B + G

92 96 100 101 100 96 101 103 93 98 90 97 96 90 100 104 86 86 103 96 96 92 112 110 82 88 100 94 90 88 118 115

VO CO £>

Table II: The influence of the length growth by the agents according to the invention

concentration A B 0 length relative for control ( : 1: 1 6: 1: 1 I mg / 100 ml 1: 3 1: 1 3: 1 3 A ₊ B ₊ O "° 67 65 100 A + B 54 55 I 120 59 57 100 63 64 65 41 43 ro 240 55 48 100 55 56 57 36 38 360 51 46 100 50 51 52 27 30 480 46 48 49

Table III: Evaluation of the Combination Effect After. Colby regard, influencing the growth in length by means of the invention

Dose in mg / 100 ml length relative to the control

A B C A + B + C "A: B: C A B C A + B + C

z "E _n E ₁ ^" ³⁵¹ R

3: 1 ί 1 83 81 100 54 67 13 α>

48 7,

43 7 29. 2

1: 1 70 86 100 55 60 5

51 '8

44 6 360 60 60 480 55 72 100 30 40 10

72 24 24 120 144 48 48 240 216 72 72 360 576 192 192 480 90 15 15 120 180 30 30 240 270 4-5 45 360

83 81 100 54 65 74 100 41 62 70 100 36 50 58 100 27 70 86 100 55 65 79 100 43 58 75 100 38

Table IV: Grain yield of winter wheat variety "Mironowskaja 808" when using the agents according to the invention in the stage Fe 7 in comparison to the untreated control - values of 3 plot experiments of the year 1977 (A: B: G = 6: 3: 1)

Trial, 1 dt / ha rel.

Trial 2 Trial 3 dt / ha rel. dt / ha rel,

untreated control

A + B + C A + B + C A + B + C

1.0 kg / ha Fe 7 1.5 kg / ha Fe 7 2.0 kg / ha Fe 7

30.1 100

37.4 124

41.6 138

45.7 152

48.8 100 43.0 100

52.9 '108 45.2 105

59.7 122 47.6 111

60.0 123 47.2 110

DG

6.96

4.76

4.45

Table V:

Grain yield of winter wheat variety "Aloedo" when using the agents according to the invention in the stage Έβ 7 in comparison to the untreated control - values of 2 plot experiments of the year 1977 (A: B: 0 = 6: 3 ι 1;

untreated control

A + B + O A + B + C A + B + σ sz. 'Ι ··' V

1.0 kg / ha Fe 7 1.5 kg / ha Fe 7 2.0 kg / ha Fe 7

GD 5 %

Trial Λ dt / ha rel,

40.9 100

49.4 121

55.7 136

58.4 143

8.09

Attempt. dt / ha rel.

71.2 100

74.1 104

75.3 106 '79.6

2.29

Table VI: Grain yield of winter wheat variety "Mironowskaja 808" when using the agents according to the invention in the stage Pe 6 and Fe 9 in comparison to the untreated control - values of 3 plot trials of the year 1978 (A: B: C = 6: 3: 1)

1.0 kg / ha Pe 6 Trial 1 rel. Trial 2 rel. Trial 3 rel. I _Λ • Μ * kg / ha Pe 6 dt / ha 100 dt / ha 100 dt / ha 100 I untreated control 2.0 kg / ha Pe 6 55.7 107 37.8 130 24.6 107 Ca) A ₊ B ₊ C 1.0 kg / ha Pe 9 59.6 105th 49.1 136 26.3 121 A ₊ B ₊ C 1.5 kg / ha Pe 9 58.4 118 51.3 138 29.7 122 A ₊ B ₊ C 2.0 kg / ha Pe 9 65.9 124 52.3 117 30.0 139 A ₊ B ₊ C 69.2 122 44.1 146 34.1 150 Λ · ID · / "^ A ₊ Jj ₊ V / 68.1 126 55.3 129 37.0 142 A ₊ B ₊ C 70.1 48.8 34.8

GD 5 %

7.66

2.74

Table 711: Growth height and stability of winter wheat variety "Mironowskaja 808" when using the agents according to the invention in the stage Fe 7 in comparison to the untreated control values of 3 plot experiments of the year 1977 (A: B.: 0 a (6: 3: 1 )

Trial 1 trial. 2 experiment 3

cm rel. Stf. cm rel. Stf. cm rel. Stf.

untreated control

A ₊ B ₊ C 1.0 kg / ha Fe 7 122

A ₊ B ₊ O 1.5 kg / ha Fe 7 118

A ₊ B ₊ C 2.0 kg / ha Fe 7 115

146 100 9 134 100 5 122 100 9 ro 122 84 9 129 96 7 101 83 9 I 118 81 9 126 94- 8th 95 78 9 8th* 115 79 126 94 8th 94 77 9 ma

t · GD 5% 4-, 97 3.05 6.29

^ Stability (Stf.) - score on grades 1-9, where 1 means total bearing and 9 no bearing "^.

Table VIII: Stature height and stability vpü winter wheat variety "Alcedo"

when using the agents according to the invention in the stage Pe 7 in comparison to the untreated control - values of 2 plot experiments of the year 1977

(A! B: C = 6: 3: 1)

untreated control

A + B + 0 A + B + C

a + β + σ

1.0 kg / ha Fe 7 1.5 kg / ha Fe 7 2.0 kg / ha Fe 7

GD 5 %

Trial 1

cm rel. stf ·

3.88

Trial 2

cm rel · Stf ·

117 100 8th 113 100 9 ί 101 86 9 105 93 9 95 81 9 103 91 9 95 81 9 100 88 9

3.18

Stability (Stf.) ~ Score on grades 1-9, with 1 total bearing and 9 no bearing

mean.

VD 03 VD

Table IX: Stature height and stability of winter wheat variety "Mironowskaja 808" when using the agents according to the invention in the stage Fe 6 and Pe 9 in comparison to the untreated control - values of 3 plot experiments of the year 1978 (A: B: G = 6: 3: 1)

1.0 kg / ha Fe 6 Experiment 1 cm rel. 100 Stf. Experiment 2 cm rel. 100 Stf. Experiment cm rel 100 3 .. Stf. 1.5 kg / ha Fe 6 143.8 98 3 136.1 92 6 137.0 93 3 2.0 kg / ha Fe 6 · 141.2 97 3 124.6 88 9 126.8 93 • 7 1.0 kg / ha Fe 9 139.2 95 3 120.5 87 9 126.8 '92 8th 1.5 kg / ha Fe 9 '   136.8 98 4 118.9 82 9 126.1 85 8th 2.0 kg / ha Fe 9 140.8 95 4 111.6 79 8th 116.0 81 8th untreated control 136.5 95 5 107.6 77 9 111.4 80 9 A H 136.0 5 104.7 9 109.8 9 A H A H A H A H A A Y bra I- B H Y bra h B H h B H μ Β λ γ G l · σ γ C μ σ η σ μ σ

GD 5% 2.38 '7.12 2.60 ^

Stability (Stf.) - score according to marks 1-9, where 1 total bearing and 9 no bearing ^ ⁰

mean.

Claims (1)

_ ₁₅ - 21 163 7 Claim . Plant growth regulating agent, in particular
to yield stabilization and improvement in cereal crops, characterized in that they are "by weight in addition to customary auxiliaries and excipients, as active ingredient, a combination of 50 to 80 wt.% 2-ßhloräthanphosphonsäure, 20 to 40 wt% _o (2-chloroethyl) trimethylammonium chloride and from 2 to 12% by weight of copper (II) -sulfone, but preferably in a weight ratio of 6: 3: 1.