JPH0971A - Method for increasing yield of potato - Google Patents

Abstract

PURPOSE: To increase the yield of potato in high efficiency by scattering a non-phytohormoal plant growth regulation agent to the leaf and stalk of a potato plant in the flowering stage, etc. CONSTITUTION: The yield of potato can be increased by applying a non- phytohormoal plant growth regulation agent such as a triazole compound e.g. (E)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-1-penten-3-ol (salt) or an isonicotinanilide compound e.g. 4'-chloro-2'-(α)-hydroxybenzyl)isonicotinanilide (salt) to the leaf or stalk of a potato plant in the flowering stage or the tuberous root fattening stage.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for increasing the yield of potatoes.

[0002]

2. Description of the Related Art Generally, in order to increase the yield of potatoes, it is known to apply fertilizers such as nitrogen, phosphoric acid and potassium, and select high-yielding excellent varieties by breeding methods.

[0003]

However, in the case of fertilizer application, excessive application of fertilizer may reduce the yield of potatoes, and in order to maximize the effect of the fertilizer, proper management suitable for the cultivation soil should be used. Required. In addition, selection of high-yielding excellent varieties by the breeding method requires a time of year and a lot of labor, but a dramatic increase in sales cannot always be expected. Even if an excellent variety appears, it is not easy to use the variety in a wide area because the adaptability varies depending on the cultivation area.

[0004]

Under these circumstances, the present inventors have conducted diligent studies, and as a result, by applying a certain kind of plant growth regulator to potato plants at a specific time by foliage application. The inventors have found that the yield of potatoes can be remarkably improved irrespective of the cultivation area and have completed the present invention. That is, the present invention provides a method for increasing the yield of potatoes (hereinafter, referred to as the method of the present invention), which comprises applying a non-plant hormone type plant growth regulator to foliage of a potato plant in a flowering stage or a tuber hypertrophy stage. It is provided.

Hereinafter, the present invention will be described in more detail. The target plants of the present invention are potato plants. As typical varieties of potato plants, for example, "baron", "make-in", "potato yakinin 1", "digima", "wasashiro", "toyoshiro", "yukijiro (potato yakinin 13)", The name can be given as "Hokkai Kogane", "Meihou", "Nishiyutaka", "Benmaru", "Tachibana (Potato Norin 7)", "Shimabara (Potato No. 11)", etc.

The drug used in the present invention is a "non-plant hormone type plant growth regulator". Here, the non-phytohormonal plant growth regulator means phenoxyacetic acid, 4-chloro-2-hydroxyphenoxyacetic acid, indoleacetic acid, indolebutyric acid, naphthaleneacetic acid and ethicloses (figarone), which show auxin action, and cytokinin action. Benzyladenine, which inhibits axillary bud development in tobacco, potato germination prevention, maleic acid hydrazide which exhibits actions such as bolting prevention of radish, etc., which enhances fruit coloring of grapes, promotes fruit ripening, etc. Daminozide (B-nine, B995), ethephon which promotes flowering, fruit maturation, etc., growth of vegetables, flowering of flowers, parthenocarpy of grapes, etc. Gibberellin, flowering promotion of flowers, pear,
It means a plant growth regulator which is not a compound having a phytohormonal action such as chlormequat (CCC) showing an action of steadily promoting almond, grape, tomato and the like. For example, as a typical compound, for example, (E) -1- (4-chlorophenyl) -4,4-dimethyl-2- (1,2,4-triazol-1-yl)
-1-Penten-3-ol (JP-A-56-25105)
Compounds described in Japanese Patent Publication No.), or salts thereof, (2R
S, 3RS) -1- (4-chlorophenyl) -4,4-
Dimethyl-2- (1H-1,2,4-triazole-1
-Yl) pentan-3-ol (JP-A-53-2817)
No. 0) or a salt thereof, (E)
-1-Cyclohexyl-4,4-dimethyl-2- (1H
-1,2,4-triazol-1-yl) -1-penten-3-ol (the compound described in JP-A-55-111477) or a salt thereof, rel- (1R, 2
R, 6S, 7R, 8R, 11S) -5- (4-Chlorophenyl) -3,4,5,9,10-pentaazatetracyclo [5.4.1. O ^2,6 . O ^8,11] dodeca-3,9
Diene (Short Review of Herbi
Cides & PGRs, 1990, compounds described on page 316 of Hodogaya Chemical Co., Ltd.) or their salts, and other triazole compounds and 4'-chloro-2'-.
(Α-Hydroxybenzyl) isonicotine anilide (S
hort review of herbicides
& PGRs, 1990, Hodogaya Chemical Co., Ltd.,
(Compounds described on page 306), such as isonicotiline anilide compounds and (RS) -2-methyl-1-pyrimidine-5.
-Yl-1- (4-trifluoromethoxyphenyl) propan-1-ol (U.S. Pat. No. 4,002,628 and Short Review of Herbicide).
s & PGRs, 1990, compounds described on page 318 of Hodogaya Chemical Co., Ltd.) or salts thereof,
α-Cyclopropyl-4-methoxy-α- (pyrimidin-5-yl) -benzyl alcohol (UK patent 121
8623 and Short Review of He
rbicides & PGRs, 1990, compounds described on page 318 of Hodogaya Kagaku Co., Ltd.), or pyrimidine compounds such as salts thereof. These agents may be used alone or as a mixture of two or more kinds. Of course, in the compound having an optically active isomer, an optically active isomer having a plant growth regulating activity can also be used.

The above non-phytohormonal plant growth regulators are usually emulsions, liquids, wettable powders, suspensions using liquid carriers, solid carriers, surfactants and other auxiliaries for formulation. It is used as a formulation. In these formulations, the active ingredient is usually contained in a weight ratio of about 0.00001 to about 99.9%.
Contained.

Examples of the liquid carrier used include aromatic hydrocarbons such as xylene and methylnaphthalene, alcohols such as isopropanol, ethylene glycol and cellosolve, ketones such as acetone, cyclohexanone and isophorone, soybean oil and cottonseed oil. Examples thereof include vegetable oil, dimethylsulfoxide, acetonitrile, liquid compound fertilizer, water and the like. As the solid carrier, for example, kaolin clay, attapulgite clay, bentonite, acid clay, pyrophyllite, talc, diatomaceous earth, calcite,
Fine powder or granules such as walnut shell powder, urea, ammonium sulfate, chemical fertilizer, and synthetic hydrous silicon oxide can be used.

Surfactants used for the purposes of emulsification, dispersion, wetting, spreading, binding, disintegration control, active ingredient stabilization, fluidity improvement, rust prevention and the like are nonionic, anionic and cationic. Either nonionic or zwitterionic can be used, but nonionic and / or anionic ones are usually used. Representative nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene polyoxypropylene block copolymer,
Sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters and the like can be mentioned. Representative anionic surfactants include, for example, alkyl sulfates, alkyl (aryl) sulfonates,
Examples thereof include dialkyl sulfosuccinates and polyoxyethylene alkyl aryl ether phosphate salts.

Other auxiliary agents for formulation include lignin sulfonate, alginate, polyvinyl alcohol, gum arabic, CMC (carboxymethyl cellulose), PAP (isopropyl acid phosphate) and the like.

The treatment concentration and treatment amount of the non-phytohormonal plant growth regulator thus prepared vary depending on the kind of the plant growth regulator and the like. A solution of about 1000 ppm is used as an effective amount of about 0.1 to about 50,000 g / ha, preferably about 0.1 to about 5000 g / ha in the case of a triazole compound.
In the case of ha and isonicotinanilide compounds, about 1
To about 50,000 g / ha, and in the case of a pyrimidine compound, it is applied at a rate of about 0.1 to about 5000 g / ha.
Of course, when treating a non-phytohormonal plant growth regulator, it is possible to mix with a fertilizer, an insecticide, a fungicide, a herbicide, or another plant growth regulator as long as the effect of the present invention is not impaired. Is.

Next, the time of drug application in the present invention, that is, the "flowering period or tuber hypertrophy period" will be described. In the present invention, it is essential that the plant growth regulator as described above is sprayed on the potato plants in the flowering stage or the tuber hypertrophy stage. By the way, potato plants may or may not have a flowering period during the cultivation period. When there is a flowering period during the cultivation period, the drug spraying period in the present invention is the flowering period. Among them, the early flowering period and the high flowering period can be preferably raised. During the flowering period of potatoes,
Although it may take about 7 weeks depending on the weather, variety, cultivation conditions, etc., it is usually about 3 to 4 weeks. For example, when 25 to 75 days after planting seed potatoes correspond to the flowering period, about 20 days in the first half correspond to the early flowering period, and the next about 10 days correspond to the high flowering period. When there is no flowering period, the drug spraying period in the present invention is the tuber hypertrophy period.
Among them, the early stage of tuber hypertrophy and the mid stage of tuber hypertrophy can be preferably mentioned. Potatoes are stalks that have grown in a lump form and developed as storage tissues. Therefore, in potato plants, the tuberization process of the stem is important for the determination of yield as well as the growth of the above-ground part. After planting seed potatoes, the tubers of potato plants have a branching period, branching elongation period, tuber forming period, tuber hypertrophy (early tuber hypertrophy, mid tuber hypertrophy, late tuber hypertrophy),
The tuber completion period has passed. The period of the tuber enlargement period in the present invention is generally about 25 to 75 days after planting seed potatoes, although it varies depending on the weather, variety, cultivation conditions and the like. For example, when 25 to 75 days after planting seed potatoes correspond to the tuber enlargement stage, about 20 days in the first half correspond to the early tuber enlargement stage, and then about 10 days correspond to the tuber enlargement stage.

The chemical treatment method of the present invention is foliar application by spraying, dusting or the like.

[0014]

EXAMPLES The present invention will be described in more detail below with reference to formulation examples and test examples, but the present invention is not limited thereto. First, formulation examples are shown. In these formulation examples,
Parts represent parts by weight.

Formulation Example 1 (Emulsion) (E) -1- (4-chlorophenyl) -4,4-dimethyl-2- (1,2,4-triazol-1-yl) -1
-Penten-3-ol (hereinafter referred to as compound A) 5
Parts, polyoxyethylene styryl phenyl ether 10
Xylene to 50 parts of cyclohexanone and 50 parts of cyclohexanone to make 100 parts as a whole, and mixed by stirring to obtain an emulsion.

Formulation Example 2 (Wettable powder) (2RS, 3RS) -1- (4-chlorophenyl)-
4,4-Dimethyl-2- (1H-1,2,4-triazol-1-yl) pentan-3-ol (hereinafter referred to as compound B) 10 parts, sodium lauryl sulfate 5 parts and aromatic sulfonic acid Kaolin clay is added to 2 parts of the formalin condensate of the salt to make 100 parts in total, and well mixed with a juice mixer and then finely pulverized with a jet mill to obtain a wettable powder.

Formulation Example 3 (Emulsion) 5 parts of 3,5-dioxo-4-propionylcyclohexanecarboxylic acid (hereinafter referred to as compound C), 10 parts of polyoxyethylene styryl phenyl ether and 50 parts of cyclohexanone were added with xylene. An emulsion is obtained by mixing the whole with 100 parts by stirring (the compound C is described in JP-A-59-196840).

Formulation Example 4 (Wettable powder) 10 parts of 4'-chloro-2 '-(α-hydroxybenzyl) isonicotinanilide (hereinafter referred to as compound D),
A wettable powder is obtained by adding kaolin clay to 5 parts of sodium lauryl sulfate and 2 parts of a formalin condensate of an aromatic sulfonate to make 100 parts in total, mixing well with a juice mixer and then finely pulverizing with a jet mill.

Formulation Example 5 (Wettable powder) 10 parts of α-cyclopropyl-4-methoxy-α- (pyrimidin-5-yl) -benzyl alcohol (hereinafter referred to as compound E), 5 parts of sodium lauryl sulfate and Kaolin clay is added to 2 parts of a formalin condensate of an aromatic sulfonate to make 100 parts in total, and the mixture is well mixed with a juice mixer and then finely pulverized with a jet mill to obtain a wettable powder. Next, a test example is shown.

Test Example 1 Potatoes (cultivar, Digima) were cultivated in the field, and a 10 ppm solution of Compound A prepared as a wettable powder according to Formulation Example 2 was prepared at the early stage of tuber hypertrophy (35 days after planting potatoes). Two
The foliage was sprayed at a drug treatment amount of 00 L / ha. The yield was investigated after cultivating for 102 days after planting the seed potatoes. The yield was expressed as the product of the number of upper vines (30 g or more per one) and the average weight of the upper ones. The results of the yield survey are shown in Table 1. The yield was shown as a relative value with the control (untreated) as 100%. As is clear from Table 1, the inventive plot showed a higher yield-increasing effect than the control plot (untreated plot).

[0021]

[Table 1] ―――――――――――――――――――――――――――――――― The present invention control group ―――――――――― ――――――――――――――――――――――― Chemical treatment concentration (ppm) 100 ――――――――――――――――――― ――――――――――――― Yield (%) 122.4 100.0 ――――――――――――――――――――――――――― ―――――

Test Example 2 20 pp instead of using a 10 ppm solution of drug treatment concentration
A test was performed in the same manner as in Test Example 1 except that the m solution was used. The results are shown in Table 2. As is apparent from Table 2, in the plot of the present invention, as compared with the control plot (untreated plot), an extremely high yield-increasing effect was exhibited as in Test Example 1 above.

[0023]

[Table 2] ―――――――――――――――――――――――――――――――― The present invention control ―――――――――― ――――――――――――――――――――――― Chemical treatment concentration (ppm) 200 ――――――――――――――――――― ――――――――――――― Yield (%) 133.9 100.0 ――――――――――――――――――――――――――― ―――――

Test Example 3 Potatoes (cultivar, Mayqueen) were cultivated in the field, and a 5 ppm solution of compound A prepared as a wettable powder according to Formulation Example 2 was prepared at the flowering stage (55 days after planting seed potatoes). 20
The foliage was sprayed at a drug treatment amount of 0 L / ha. After planting the seed potatoes for 119 days, the yield was investigated. Yield is the number of potatoes (30g or more per one) and potatoes per 1
The average weight is shown as the product. The results of the yield investigation are shown in Table 3.
The yield was shown as a relative value with the control (untreated) as 100%. As is clear from Table 3, the plot of the present invention showed an extremely high yield-increasing effect as compared with the control plot (untreated plot).

[0025]

[Table 3] ―――――――――――――――――――――――――――――――― The present invention control ―――――――――― ――――――――――――――――――――――― Chemical treatment concentration (ppm) 50 ――――――――――――――――――― ――――――――――――― Yield (%) 124.2 100.0 ――――――――――――――――――――――――――― ―――――

Test Example 4 Drug treatment concentration: 5 ppm Instead of using a solution, 10 ppm
The test was conducted in the same manner as in Test Example 3 except that the solution was used. The results are shown in Table 4. As is clear from Table 4, in the plot of the present invention, as compared with the control plot (untreated plot), an extremely high yield-increasing effect was exhibited as in Test Example 3 above.

[0027]

[Table 4] ―――――――――――――――――――――――――――――――― The present invention control group ―――――――――― ――――――――――――――――――――――― Chemical treatment concentration (ppm) 100 ――――――――――――――――――― ――――――――――――― Yield (%) 147.3 100.0 ――――――――――――――――――――――――――― ―――――

Test Example 5 A test was conducted in the same manner as in Test Example 4 except that Compound B [drug treatment concentration (ppm): 500] was used instead of Compound A [drug treatment concentration (ppm): 10]. As a result, a similar increase in sales was confirmed.

Test Example 6 Potatoes (cultivar, make-in) were cultivated in the field, and at the flowering stage (60 days after planting seed potatoes), a 50 ppm solution of Compound C prepared as a wettable powder according to Formulation Example 2, Compound D Solution of compound E or 100 ppm of compound E
The solution is sprayed with foliage at a drug treatment amount of 200 L / ha.
After cultivating 110 days after planting the seed potatoes, the yield is investigated. Yield per plant is 30kg or more
The yield-increasing effect is confirmed by expressing the product as the product of the number and the average weight of one, and calculating the relative value with the control plot (untreated plot) as 100%.

[0030]

According to the present invention, it becomes possible to easily and significantly improve the yield of potatoes.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area A01N 43/653 A01N 43/653 A // C07D 213/81 C07D 213/81 249/08 518 249 / 08 518

Claims (4)

[Claims] 1. A method for increasing the yield of potatoes, which comprises spraying a non-phytohormonal plant growth regulator onto potato plants in the flowering stage or tuber hypertrophy stage. 2. The non-plant hormone type plant growth regulator is a triazole-based compound, an isonicotianilide-based compound or a pyrimidine-based compound.
How to increase potatoes described. 3. The triazole compound is (E) -1- (4
-Chlorophenyl) -4,4-dimethyl-2- (1,
2,4-triazol-1-yl) -1-pentene-3
-All or a salt thereof, or (2RS, 3RS)-
1- (4-chlorophenyl) -4,4-dimethyl-2-
(1H-1,2,4-triazol-1-yl) pentan-3-ol or a salt thereof, or an isonicotine anilide compound is 4′-chloro-2 ′-(α-hydroxybenzyl) isonicotine anilide or a salt thereof. The method for increasing the yield of potatoes according to claim 2, wherein the method is salt. 4. (E) -1- (4-chlorophenyl)-
4,4-dimethyl-2- (1,2,4-triazole-
1-yl) -1-penten-3-ol or a salt thereof is applied to foliage of a potato plant in a flowering stage or a tuber hypertrophy stage, to increase the yield of potato.