DD155479A1 - MEANS FOR REGULATING PLANT GROWTH - Google Patents

Abstract

The invention relates to agents for regulating plant growth. As active ingredient, they contain 4-oxo-1,2,3,4,5,6,7,8-octahydro-quinazolin-2-spirocyclohexane all in or in combination with 2-chloroethaneethanephosphonic acid and / or chlorocholine chloride.

Description

VEB OHEICEKOMBINAO? BITTSRFELD .Bitterfeld, 11. 12. 1980

2001

Means for regulating plant growth Field of application of the invention;

The invention can be used in agriculture to regulate plant growth and plant development.

Characteristic of the known technical solutions

It is known that synthetic agents with growth and yield-influencing action, such as succinic acid N, N-dimethyl-monohydrazide (Alar), for the regulation of plant growth, in particular for inhibiting growth in dicotyledonous plants (DS-AS 12674-64) , Halmstabilisierung in cereals, to stimulate the formation of matter and mass production, to inhibit growth in grass, to extinction inhibition and frost protection in crops and crops in agricultural, horticultural and forestry practice. However, such means and methods have certain drawbacks, such as limited range of application due to strong variety dependence, often inadequate reproducibility, phytotoxic and toxic lifting effects, economic burden on production processes, and so on, for which reason it is necessary to resort to more effective and economically more favorable means.

- 2 -. 22 6 35 1

Method to search.

Thus, it is desirable to develop synthetic growth regulators with a broad crop spectrum with good reproducibility of effects and to avoid phytotoxic side effects. The use of practical synergists is also gaining in importance.

Object of the invention

The aim of the invention is to develop an easily produced active substance for regulating plant growth, which at the same time is suitable as a combination partner for already known growth regulators.

Outline of the essence of the invention

This object is achieved in that the means for regulating the Iflanzenwachstums addition to conventional excipients and carriers as active ingredient 4-Qxo-i, 2,3,4-, 5,6,7,8-octahydroquinazolin-2-spirocyclohexan

contain"

The compositions of the invention may contain as additional active ingredients 2-Chloräthanphosphonsäure and / or Chlorcho3.inch.lorid. The active ingredient can be prepared in a simple manner from cyclohexanone and urea (J, prakt. Chem, 218, 5 »773-778, 1976). -

«3 - · 2 26351 ₂₀₀₁

Depending on the dose and time of application, the most varied processes in the plant can be controlled, such as changing the growth form by influencing the Apikaldominaoz, regulating the flowering, stabilizing the shoots, eff ectuation of the Iilasseproduktion and the content of content, preventing the Budsaustriebs and Promotion of leaf and fruit fall. The application of the agents according to the invention is advantageously carried out in the preparation or application forms customary for means for biological process control, such as solutions, emulsions, suspensions, concentrates, which are prepared with the addition of liquid and / or solid carriers or diluents and can be diluted with water for use. The application forms depend on the intended use. You have to ensure in any case, a fine distribution of.effective substances. The preparation of the preparations is carried out in a conventional manner by mixing or milling.

Ausfüh approximately examples

Example 1 :

Growth inhibition and increase of green matter in cereals

The leaf blades of wheat plants (Triticum aestivum) variety "Hatri" and barley plants (Hordeum vulgare) variety "Trumpf" are dipped in test solution in the 2-leaf stage. The cultivation of the grain takes place in the climatic chamber under long-day conditions. For evaluation, 14 days after application, the length of the pseudo-protozoa piece between the 1st and 2nd leaf blade and the plant mass are determined in relation to the control.

_4- 226351. 2001

The results are summarized in Tables I to III.

Example 2:

Halm stabilization in cereals

The test took place in parcels of winter wheat, spring barley, winter barley and winter rye.

The preparations were applied in 3 application rates with 2 repetitions in stage 7 of the FEEICBS scale (Fe '7). The evaluation criteria were the test characteristics "length of crop, straw stability, crop plant compatibility and maturity history.

The results are summarized in Table IV.

Example 3:.

Growth inhibition in field bean

Potted field beans (Vicia faba) were treated in the 2-leaf stage with the test solution and cultivated in the greenhouse. 4 weeks after the application, the evaluation is carried out by measuring the plant length.

The results are listed in Table V.

In Tables I to ¥ mean:

A = 4 ~ oxo-1,2,3 * 4- »5} 6j7j8-octahydro-quinazolin-2-spirocyclohexane

B. ~ Chlorocholine chloride

C = 2-chloroethane phosphonic acid (70%)

D = p-nitro-phenoxy-isobutyric acid

S = 2,3-dichloroisobutyric acid

F = 2,4-dichloro-phenoxy-isobutyric acid

G = IT-dimethylmorpholinium chloride

H = aqueous formulation containing per liter of an active ingredient combination of 392.8 g of 2-Ghloräthanphosphonsäure, 120 g of chlorocholine chloride and 60 g Chloralbisacylalen.

Tables I to III: Influence of the agents according to the invention on growth

and on the green matter in cereals compared to known substances or known combinations. (Values in relation to the control, control = 100 % \

+ = low phytotoxicity ΐ + = good phytotoxicity +++ = strong phytotoxicity · ·

Table I: Comparison of the single active substances

Formulation conc. Wheat barley. l

% AS Length Mass Length Mass

a · io °

(acetonic 1O ~ ^

Solution) ρ

10 "^

10 "" * 79 94 100 84-. ^ω

0 10

10 "" ¹

10

43 110 48 105 65 119 25 78 54 100 79 94 25 94 79 153 71 14-7

68 100 75 106 79 109 68 92 86 92 100 84- 54 88 90 88 95 108

ro ο ο

Tafeelle II: Comparison of the two-person combinations

Substance ratio conc.

Of. AQ

,Combination

A + C

D -5- B

1: 1

: 3

: 1 J 3

wheat

Length mass phyto toxicity

length

.Barley

Mass phyto toxicity

10 10 '

10 '

.0

10 '

-1

• 10 10 '

, 0

-1

10 10 '

.0

-1

10 "10"

41 84

34 72

52 76

48 82

48 88

114 109

109 123

90 97

81 90

74 87

112 100

84 112

95 93

81 100

79 88

Continuation Table II:

Substances! Combination Ver 'relationship Ko οζ · % AS length Wheat mass Phytotoxicity did length Barley mass Phytotoxicity Ξ + B 3 : 1 10 ° 41 35 ₊₊₊ 102 47 + 10 ~ ¹ 76 84 96 99 1 : 1 10 ° 43 43 ++ 79 52 10 ~ ¹ 76 " 90 88 101 1 : 3 10 ° , 38 55 + 90 68 + 10 ~ ¹ 62 84 99 101

Table III: Comparison of the triple combinations

Substances ratio conc. Wheat barley

% AS length mass phytotoxi- length mass phytotoxic

quality of life

A + G -5- B 5: 30: 15 10 ° 17

10 ~ ¹ 83 113

E + C + B .5: 30: 15 10 ° 13 75

10 "* ¹ 93 88

D + G + B 5: 30 s 15 10 ° 20 88

10 ~ ¹ 96 96

.7 62 86 88 21 .62 97 100 24 65 100 104

Table IV: Halmverkürzende effect of the inventive compositions in cereals

Che £ Member In amount (kg / ha AS) Mixture ratio 15 Winter wheat abs. / rel. (cm) (%) 100 O 96 Winter barley abs. / rel. (cm) (%) 100 Winter rye abs. / rel. (cm) (%) 100 Spring barley abs. / rel. (cm) (%) 100 f Control· * : 15 144 100 '86 100 161 100 83 100 I .H 1.0 15 138 100 95 100 100 81 100 vO 1.5 15 137 77 i 2.0 15 135 100 76 100 fo P + C + B 1.0.  5 15 137 100 100 90 77 100. 1.25 5 15 77 96 147. 98 1.5 5 15 137 100 76 100 129 92 79 100 ω 1.75 5 15 L 73 129 Oil 2.0 5 - 15 134 98 74 96 A + 0 + B 1.0 5 135 78 95 1.25 5 77 133 1.5 5 132 73 126 73 93 2001 1.75 5: 73 119 2.0 128 71 : 30 yrs : 30 s : 30 s 30 '. : 30 ί : 30: 30 : 30.j 30: 30.

Table V: Growth inhibition in Vicia faba

Substance ratio

Concentration % AS plant length

in relation to the control

(Control = 100 %)

a + σ

3: 1 1: 1

: 3

10 10 "

, 0

10 "

10 10

10 ¹ 10 "

1ο ¹

10 '

-1

0 -Ι90

101

80

93

86

46 89

49 80

κ> cn ω in

Claims (2)

226351 ₂₀₀₁ Claim for invention 1. An agent for regulating plant growth, characterized in that. In addition to conventional excipients and carriers as active ingredient 4-0xo-1,2,3,4-, 5,6,7,8-octahydro-quinazolin-2 ~ spirocyclohexan contain. 2. Means according to item 1, characterized in that they contain as additional active ingredients 2-Chloräthanphosphonsäure una / or chlorocholine chloride.