JPS58201706A - Plant lice-controlling agent - Google Patents

Abstract

PURPOSE:A plant lice-controlling agent that contains, as active ingredients, 3- diethoxyphosphorylthiomethyl-6-chlorobenzoxazolone and 1-naphtyl N-methylcarbamate, thus showing high controlling effect. CONSTITUTION:The objective agent contains a mixture of 3-diethoxyphosphorylthiomethyl-6-chlorobenzoxazolone of formula I and 1-naphthyl N-methylcarbamate of formula II at a 1:(1/8-8) weight ratio, preferably 1:(1/4-4) weight ratio as active ingredients. It shows specifically high controlling effect against plant lice with high safety to plants without chemical injury to crops. The agent is prepared by customary processes into dusts, emulsions or wettable dusts for use.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to 3-dietyoxyphosphorylthiomethyl-6-chlorobenzoxazolone (hereinafter referred to as "phosalone") and 1-su7tyl N-methylcalf 9, which are represented by the following chemical structural formula. The present invention relates to an aphid control agent containing a mixture with rnAa4 (hereinafter referred to as rnAa4) as an active ingredient.

Its purpose is to provide a new drug that is highly effective in controlling aphids.

Aphids are pests of fruit trees and canola.
Not only does it absorb sweat, but it is also important as a vector for viral diseases.

In Japan, large amounts of organophosphorus insecticides have been used as specific drugs to control aphids. However, in recent years, 1fiK green peach aphid, cotton aphid, etc. have become less sensitive to chemicals, and it has become clear that some insecticides are not always effective enough. The development of pest control agents has become an urgent need.

The present inventors investigated various agents in order to develop an agent for controlling Aphids that meets these requirements. As a result, by applying a mixture of Phosalon, an organophosphorus insecticide, and NAO, a carbamate insecticide, both of which have traditionally been used as general-purpose insecticides,
The present inventors have discovered that this is a chemical that exhibits a specifically high exterminating effect against aphids and can be used extremely safely without causing any phytotoxicity to crops, leading to the completion of the present invention.

Phosalon, which is one of the active ingredients of the aphid control agent of the present invention, is described in Japanese Patent Publication No. 7319/1973, [Modern Pesticides Course IJ (published by Asakura Shoten, November 5, 1971), p. 48, "Agricultural・Ndoptsk 1981 Edition” (July 1981)
It is known as an insecticide, such as in pages 45-46 (Published by the Japan Plant Protection Association, March 20th). This action acts as a contact poison against a wide range of pests such as fruit trees, canola, tea aphids, mites, beetles, and staghorn moths.
It is fast-acting but has a short residual effect. In addition, the insecticidal effect against green peach aphids, cotton aphids, etc. is insufficient. One of the active ingredients, NAO, is
Publication No. 150, [Modern Pesticide Course 111J (same as above)
Pages 55-56, "Pesticide Hunt Book 1981 Edition"
(Same as above) On pages 74 to 77, it is a well-known insecticide, and its action is as a contact poison and as a food preparation for a wide range of pests, including planthoppers and planthoppers of paddy rice, armyworms of fruit trees, canola, and leaf beetles. , shows almost no control activity against green peach aphid.

In the present invention, when the two types of insecticides such as Phosaron and 11Ao are mixed and applied to aphids, the control effect obtained when each insecticide is used alone is completely unexpected. It exhibits an extremely excellent insecticidal effect, with an unprecedented synergistic insecticidal effect and a long-lasting effect. Moreover, it does not cause any phytotoxicity to the plants. There are a wide variety of aphids that can be expected to have excellent insecticidal effects, such as green peach aphid, cotton aphid, potato aphid, tulip aphid, radish aphid, and false radish aphid. If applied to canola such as potatoes, cucumbers, melons, watermelons, cabbage, and Chinese cabbage, seasonal crops such as cotton and tobacco, flower petals such as parakeets, chrysanthemums, and tulips, and fruit trees such as peaches, apples, and plums, it can be used anywhere. An insecticidal effect can be obtained during the period.

The blending ratio of the active ingredient in the aphid control agent of the present invention is in the range of 1/8 to 8 parts by weight, preferably 1/45 to 4 parts by weight of NAO per 1 part by weight of NAO. , and can be used in an appropriate blending ratio.

The aphids control agent of the present invention can be used in an appropriate form such as a powder, emulsion, or water conservancy according to known formulations. As the carrier in this case, any solid or liquid carrier commonly used for agricultural and horticultural chemicals can be used, and the carrier is not limited to a specific one. Examples of solid carriers include kaolin, talc, indonite, diatomaceous earth, silica, talc, and clay. Examples of liquid carriers include solvents such as xyrel, cyclohexanone, and methyl ethyl ketone. The types of carriers used in the present invention are not limited to these examples.

In addition, auxiliary agents used in agricultural and horticultural chemicals, such as emulsifiers, wetting agents, spreading agents, dispersants, and decomposition inhibitors, can be added to reliably improve the effectiveness.

6- Next, examples of the aphid control agent of the present invention will be given, but the present invention is not limited to the following examples. In addition, all parts in the following examples indicate parts by weight.

Example 1 (Powder) 2 parts of Phosalon, 2 parts of NiO, 1 part of white carbon, inpropyl acid phosphate (PAP).

0.5 part of physical property improver) and 94.7 parts of clay were mixed uniformly and ground to obtain a powder.

Example 2 (Irrigation agent) 25 parts of Phosaron, 25 parts of NAo, 5 parts of sodium ligninsulfonate, 5 parts of white carbon, and 4 parts of fine clay
0 parts are mixed uniformly and pulverized to obtain an irrigation agent.

Next, the usefulness of the aphid control agent of the present invention will be specifically explained using test examples.

Test Example 1 Insecticidal effect test against green peach aphid and cotton aphid (1) Eggplant (variety Senryo 2) in a pot with 6 serrations on each side.
One tree was planted, and at the 5-leaf stage, wingless adult melons with green peach aphid or 2 cottontail beetles were inoculated into separate pots at a rate of 30 individuals per pot. One day after the inoculation, the number of colonized green peach aphids and cotton aphids was determined, and a diluted solution of an aquarium prepared according to Example 2 at a predetermined concentration was sprayed at 30 doses per pot. Thereafter, the pots sprayed with the chemicals were placed in a greenhouse, and 24 hours later, the number of wingless adults of green peach aphids and cotton aphids parasitic on eggplant leaves was investigated, and the mortality rate was calculated using the following formula. This study was conducted in a 3-pot system for each drug concentration, and the average mortality rate @)
was calculated.

Ta: Total number of parasitism after treatment in treated area Tb: # Before treatment I Oa: Total number of parasitism at the time of post-treatment survey without treatment Cb: l
Before treatment 1 (2) Furthermore, using the regression linear equation of spray concentration-mortality rate, LO9Q (90% lethal drug concentration) and LO5 (1
(50 cm). And based on the LO5Q value,
The following Kerr et al.'s equation (r, ra, m-o,
(:) Yarnal Op Agricultural and Food Chemistry, 1961)) to find the expected LO59 value when two types of drugs are used together, and calculate the degree of synergy by mixing the two types of drugs using the following formula. did.

LO59 expected value = □ (p voice) -λ-+ q LOsot Koii p and q: Each drug! (Hosalon) and drugs ■ 9
- Mixing ratio of (NAO), (where p+q=1) LOso
t: Actual LO5Q value (ppm) of drug I (hosalon)
) LOsom: Actual LO5Q value (ppm) of drug 1 (NAO) (3) In order to investigate the residual effect of the drug, 6 days after spraying, the parasitic green peach aphid and cotton aphid were infected with a brush. 30 insects per pot were newly inoculated with wingless adults of green peach aphid or cotton fly 2 insects, and 1 day after inoculation (
The mortality rate (a) was determined by examining the number of wingless adults of green peach aphids and cotton aphids parasitic on eggplant leaves during the 7 days after bales were sprayed with the chemical. This test was conducted in a 3-pot system for each drug concentration, and the average mortality rate (4) was calculated.

The above results are shown in Table 1 (insecticidal effect on peach aphid) and Table 2 (insecticidal effect on cotton aphid bug).

Table 1 (Insecticidal effect on green peach aphid) Hosaron + N
AO200+200 100 IJO90421
00 (present invention') 100+100 100
10050+50 100L
O5Q 26 5fl 9225+25
96 45j
2.5+12.5 4,8 30 Hosaron 200 83 L090 1
90 20100 73
850 39 Lose 65 0
25 0 0N
AO20003If15o >>2000 0 sun - Naron 10XMO200+200 86 11f19
Q400 21100+100 7
5 1750+50
42 LC5o i25 1.0
1625+25 0
012.5+12.5 0
0 marathon ÷ NAO' soo+aoo
8o LO9Q 2000 10400
+400 35 0200+200
7 1105 (110001, 10100+100
0 0 Marathon + XMo 80048.00 74 XD
q(325000400+400 42
0200+200 15L
Oso 940 1.0 0100+100
0 0 marathon
800 83 LO9[+960
15400 40
12200 6 LOso
460 0100 0
0XMO20000LO5
o＞)2000 0MBP
500 0
0 Table 2 (Insecticidal effect on cotton aphids) Hosalon 10Nh0 100+100 10OL09Q 3
1 100 (this invention) 5 leaves 50 1
00 9025+25 10
0 6612.5+12
．． 5 87 LO5G 10 4.7
436.25+6.25 60
25 Honalon 2
00 96 LO9Q150 31
100 63 05
0 25 'LD5 (17002500 NAO10095LO908055 50715 2526LOso 35 01
2.5 10 0
Hosan+XMo 200+200 90
l1090400 20100+10
0 59 0
50+50 22 LOso 170
0B 025啼25 0
0 marathon + NAO1
00+100 94 LO9 (11356350+
50 80 3
725÷25 36
012.5+12.5 11 LOso
64 1. I O6,25+6.25
0 0-r97+XMo aoo+soo 33
0400+400 11
0200-)200
2 LO5Q 2300 1.1 0100
+100 0
013- Marathon 800 43
0400 14 L05Q1
300 0200 5
0100 0
0XMO20000LOso＞:X0O
OO@)XMO's LO5 (1 value is ~), and the degree of synergy was calculated.

Test Example 2 Enhancement of insecticidal effect by different mixing ratios of Phosaron and NAO Eggplant leaves cut into large pieces with a diameter of 8 m were immersed in a chemical solution of a predetermined concentration for 10 seconds and air-dried. After that, this eggplant leaf was placed in a plastic petri dish with an inner diameter of 9 m, and 10 wingless adult green peach aphids were released there.The number of living and dead insects was examined after 24 hours, and the mortality rate (a) was determined in the same manner as in Test Example 1. I asked for

This test was conducted on a 14-year basis with three trials per drug concentration, and the average mortality rate (A) was calculated. In addition, the L050 value was determined in the same manner as in Test Example 1, and the degree of synergy due to the mixed use of the two types of drugs was calculated.

The results are shown in Table 3.

Table 5 (Insecticidal effect on peach aphid by different mixing ratios of Phosaron and MAD) 2G+5 9
7 10+2.5 10 1:1 50÷50 100 25+25 97 21 5.512.5÷12
．． 5 60 6.25+6.25 10 t:4 80+! 120 1o.

40 people 160 97 72 4.020+80
70 10+40 27 Hosaron 200 1001
009358 Hosaron 50 3725
3. Patent applicant: Hokuko Chemical Industry Co., Ltd. Procedural amendment August 3, 1980 Director of the Patent Office: Mr. Kazuinu Wakasugi 1. Indication of the case: Patent Application No. 85954 of 1985 2. Name of the invention: Aphid control agent 3. Relationship with the case of the person making the amendment Patent Applicant Address 4-2, Nihonbashi Honseki-cho, Chuo-ku, Tokyo Name Hokuko Chemical Industry Co., Ltd. 4, Agent 5 Date of amendment order (voluntary) Showa Year, Month, Day (Shipping date Showa) )
tm Masaru On Elephant Detailed Description of the Invention in the Specification Column Contents of Amendment 1) "Planting" in the third line of page 8 will be corrected to "planting."

2) On page 15, in Table 5, the mixing ratio of the drug of the present invention is 4.
:Correct "40" in the column of cooperation degree regarding 1 to "4. OJ".

that's all 2-

Claims (1)

[Claims] An aphid control agent comprising a mixture of 6-jethoxyphosphorylthiomethyl-6-chlorobenzoxazolone and 1-s7tyl N-methyl carbamate as an active ingredient.