SU1245252A3 - Agent for defoliation of plants - Google Patents

Abstract

A synergistic mixture of (i) a defoliating and/or growth-regulating compound selected from 1,2,3- thiadiazol-5-yl-urea derivatives and 1,2,3-thiadiazolin-2-ide derivatives with (ii) a basically reactive substance is used for defoliating and/or regulating the growth of plants, preferably cotton plants. Preparations suitable for such use comprise the aforesaid constituents, the ratio by weight of the defoliating and/or growth-regulating compound to the basically reactive substance preferably being 1:0.5 to 1:1000. The defoliating and/or growth- regulating compound is, for example, 1-phenyl-3-(1,2,3-thiadiazol-5-yl)- urea and the basically reactive substance is, for example, an alkali hydroxide, amine, carbonate, phosphate or alkali salt of a monocarboxylic acid.

Description

FIELD OF THE INVENTION The invention relates to agriculture, in particular, to means causing abscission of cotton leaves.

The aim of the invention is to enhance the defoliating activity of known agents.

The invention is illustrated by examples (ratio of components, ac.%):

The mixture of active substance with basic 95

Kaolin4

Surfactant based on sodium salt of N-methyl-H-oleyl taurine and calcium salt; LIGNINULA acids (1: 4) 1

The mixture of active substance with basic 80

Calcium salt lignin-sulfonic acid10

Ammonium salt of mono-sulfuric acid ester of nonylphenyl tetraethylene-glycol-3

Colloidal silicic acid7

A mixture of active substance. va with basic 20

Tonsil 70

Calcium salt lignin sulfonic acid. 8 N-methyl-N-oleshltaypina sodium salt wetting agent 2 Mixture of active substance with basic 5 Tonsil80 Calcium salt lignin sulfonic acids 10 N-metals-W-sodium wetting agent 5 Sulfur preparation of the compositions is carried out by mixing the organizers. parts in the drum and the subsequent grinding in the mill. . .

These compositions can be applied to the plants to be treated either directly or after dilution with water.

The examples are given. greenhouse experiments, which are typically carried out on cotton plants with 5B true leaves. Means are applied in

the form of aqueous compositions on the basis of these compositions.

The evaluation of the experiments was carried out by counting the leaves discarded during application. Each experimental plant in a separate experiment has always had the same number of leaves. The number of the leaves under the test of loosening varies from 20 to 28. The following examples contain data on the biologically active substance, the substance reacting as alkali, the mixture, the consumption rate, as well as the calculated percentage of defoliation,

5 In parentheses, the percent of defoliation obtained by the combination is indicated by the method described by Colby, the value that would be expected if there were

0 a / protective effect.

The results of the examples show that the action of the active substances as leaf removers is enhanced by inactive ones. They have 5 alkaline reactions.

Example I. Young plants of cotton in the 5th leaf stage are treated with the indicated components, a mixture, namely, a biologically active substance, substances with an alkaline reaction, and their mixture according to the composition (repeated 4 times). The amount of water used is 500 L / ha After a few days, the percentage of fallen leaves is determined.

The results are shown in table 1.

Example 2. Young cotton plants are treated, analogously to example 1, with composition

The results are shown in table 2.

Example 3. Young cotton plants are treated similarly. but for example I with composition c). 4S The results are shown in Table 3.

 Example 4. Young cotton plants are treated analogously to example 1 with composition c.

The low percentages of the action compared with the previously mentioned examples can be explained by the conditions surrounding, the medium during the experiments in the winter months is 1 s. The results are shown in Table 4.

55 Example 5. Young cotton plants are treated analogously to example I with composition c).

The results are shown in Table. five.

35

40

to

1245252

Example 6. Young Hibiscus plants with 7-10 leaves removed are treated analogously to Example 1 with composition c). 6 days after application of the agent, the percentage of leaves fallen is determined.

The results are shown in Table. 6

Example 7. Young cotton plants are treated analogously to example 1 with composition c).

The results are shown in Table. 7,

Example 8. Young sprat plants are treated analogously to example 1 with composition c)

The results are shown in Table. eight.

Example 9. Young cotton plants are treated analogously to Example 1 with a composition. The results are shown in Table. 9.

PRI measure 10 ,. Young cotton plants are treated analogously to example 1 with composition c).

The results are shown in Table. ten.

Example 11. Young cotton plants are treated analogously to example 1 with composition 8).

The results are shown in Table 11.

you n

t5

YU

25

1-phenyl-3 - (, 2,3-thiadiazol-5-yl) - urea (I)

KjCOj (II) (XV) (NH CO, (IV) KOH (V)

1 +. II

I + XV I + IV I + V

Example 12. Young citrus plants with 21–27 leaves are treated with ana, similar to Example 1, composition d

The results are shown in Table. 12.

Table 1

to

t5

YU

-Table 2

(57) (57) (57) (57)

1-phenyl-3- (1,2,3-thiadiazole-3-yl) urea (1)

Sodium oleate (vi)

Triethanolamine (VII)

Triethylamine (VIII)

I + VI

I + VII

I + VIII

5- (Fennp-Carbamoylimino) -1,2,: 3-thiadiazolidin-2 id, calcium salt (IX) IX + II

5- (Phenyl-carbamoyl-imino) -, 2,3-thiadia-ZOLIDIN-2-ID, potassium salt (XI) 500

KjCOj (II) XI + II

Table 3

(29) (29) (29)

80 + 500

24

17

About 39

(17)

71245252

Table 6

Components Norma .ras-Udale-E

course, g / ha. (Kollest-bi),%

1-Phenyl-3- (1,2,3-thiadiazol-5-yl) urea (1) 2.5 O

 (Ii) 500 o

 (Iii) 500O

I + II10 + 500. 46 (4)

I + III10 + 500. 54 (4)

Table 7.

Components Norma ras- Udale- E

progress, g / h ae (collision bi) ev,%

 1-Phenyl- (1,2,3-ti adiazol-5-yl) - urea (1)

 (Ii)

MOLE

(Iii)

1 + II

I + III

nineteen

ABOUT

ABOUT

57

67

71

76

62

86

90

(19) (19) (19) (19) (19) (19) (19)

4033

. 540О

540 O

40 + 500 71

 48

Components

Consumption rate, g / ha

1 - Fensch: (1 o2.3 t and adiaz ol- 5 and l) - urea (I)

K, SO3 (II) K, -RO ,. . (XVII) 1 II I + XVII

B (Feck sh-carbacoyl-imino) 1. ,, 2 5 3-tia-diazolidin-2-1 1D ,, magnesium salt (XIII)

K, jPO ,. (: CL711) XIII + XVII

a b and c

(33) (33)

Table 9

 E

(by Kolby)

64

ABOUT

ABOUT

86

91

64 64

T a b l and c a 10

52

g

.-.

Components Norma ras- Udale-E

progress, g / h ae (collision bi) ev,%

5- (Phenyl-carbamo-limino) -1,2,3-thiazdiazolidin-2-id, manganese salt (XIV) 40 32

K, RO (XVII) 500 O

XIV + XVII40 + 500 82 32

.-.- “„ - - .., .. - 1and .---- - - ---- - - ------- - - -

Table 12

Components Norm of distance removal, g / ha

leaves,%

1-Phenyl- (1,2,3-thiadiazol-5-yl) -urea (I) 30019

 (Ii) 1000O

I + II300 + 1000 48

Editor M.Kelemes

Compiled by I. Yudintsev

Tehred L.Oleynik Proofreader V.But ha

3929/60

Circulation 679 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (2)

MEANS FOR PLANT DEFOLIATION, including an active substance based on derivatives of 1,2,3 thiadiazolyl-5-urea, a surfactant and an inert carrier, characterized in that, in order to increase the defoliation activity, it contains a mixture as an active substance 1-phenyl-3- (1,2,3 ~ thiadiazol-5-yl) urea or salts of potassium, calcium, magnesium, manganese and 5- (phenyl-carbamoylimino-1 , 2, 3-thiadiazolidine-2ida with a basic substance selected from the group consisting of potassium carbonate, sodium carbonate, ammonium carbonate, potassium phosphate, tetracal pyrophosphate, potassium hydroxide, sodium oleate, triethylamine, triethanolamine, hexamethylenetetramine, in the ratio 1: 1 1 : 250, respectively, as a surfactant, a mixture of the calcium salt of ligninsulfonic acid and sodium C-methyl-Y-oleyl taurate in a 4: 1 ratio or a mixture of the ammonium salt of the complex monoester § sulfuric acid and nonyl phenyl ether of tetraethylene glycol and calcium salt of l gninsulfokisloty in the ratio 0.3: 1, as carrier - kaolin Tonsil or silicic acid in the following ratio, wt.%: Specified active SU <„> 1245252 substance 5-95 Indicated on top of nosto active substance 1-15 Specified carrier 4-80