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Method for preventing and treating noctuid pests in field crops

A field crop and noctuid moth technology, which is applied in the fields of botanical equipment and methods, insecticides, animal repellents, etc., can solve the problem of not being able to simultaneously take into account the prediction and forecasting of various noctuid moths and small moths, as well as biological control and interference. The oviposition behavior of the mated female adults and the inability to ensure that the fertile female adults lay eggs, etc., can reduce the field population density, widely implement and popularize, and improve the application effect.

Active Publication Date: 2021-07-23
GUIZHOU NORMAL UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, insect sex pheromones also have different standards in the use of technology and evaluation results
Moreover, the existing commercially available lures are mainly composed of sex pheromone components aimed at Noctuidae insects, and a trapping device for field sex lures is set to interfere with the mating behavior of adult moths and achieve the purpose of reducing the number of insect populations in the field; trapping The effect has a single type, and it cannot take into account the prediction and biological control of various noctuid small moths at the same time
[0005] In the prior art, noctuid moth-like sex attractants are mainly used for trapping, monitoring, and control of adults, but it cannot avoid or interfere with the oviposition behavior of mated female adults, nor can it ensure that pregnant female adults lay eggs on target crops. egg

Method used

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  • Method for preventing and treating noctuid pests in field crops
  • Method for preventing and treating noctuid pests in field crops
  • Method for preventing and treating noctuid pests in field crops

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Screening and determination of oviposition repellents and accelerators for budworm budworm:

[0032] Among the 10 kinds of phytochemical information substances, benzaldehyde and methyl salicylate have obvious oviposition-repelling activity to female adults of P. tabaciana, and the average egg production of P. tabaci females is lower than 10.00; (229.90±47.76 grains), cis-3-hexene acetate (153.30±44.81 grains), trans-β-caryophyllene (149.60±55.94 grains) all had a promoting effect on the oviposition of female adults. The present invention passes through three different concentrations (10 -6 g / mg, 10 -4 g / mg and 10 -2 g / mg) of benzaldehyde and methyl salicylate, to verify its repellent activity, and to test the repellent behavior of budworm oviposition, the results are as follows: figure 2 shown.

[0033] Depend on figure 2 It can be seen that the amount of eggs dropped by female adults of P. tabaciensis on the two treatments is less, which is far lower than that o...

Embodiment 2

[0037] Screening and determination of oviposition repellents and accelerators for Spodoptera litura:

[0038] Depend on Figure 4 and Figure 5It can be seen that, compared with P. tabaci, female adults of Spodoptera litura have more obvious repulsion to treatment 2, but there is no significant difference in the amount of eggs dropped between treatment 1 and the control. As far as the 10 tested compounds were concerned, cis-3-hexen-1-ol, limonene and cis-3-hexene acetate had repellent effects on the amount of eggs laid by female adults of Spodoptera litura, and the amount of eggs dropped was average. It was lower than 3.00 pieces, while the amount of eggs dropped in the control group was 14.90±2.81 pieces. Linalool and β-Zhiroone can promote spawning, and the amount of eggs dropped is higher than 20.00 pieces. Because of the benzaldehyde component in treatment 1, it has a promoting effect on the amount of eggs dropped by female adults. The amount of eggs dropped on treatme...

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Abstract

The invention provides a method for preventing and treating noctuid pests in field crops. The method comprises the steps of preparation of an oviposition repellent, preparation of an oviposition accelerant, arrangement of lepidoptera noctuid insect oviposition behavior monitoring equipment and the like. According to the oviposition habit of lepidoptera fruit-boring noctuidae insects, the oviposition behavior of female adults is regulated and controlled by means of the oviposition repellent, and the oviposition amount of pregnant female adults on target hosts is reduced, so that the purposes of reducing the population density in the field, reducing fruit boring and diseased fruit occurrence and improving the noctuidae insect behavior regulation and control technology are achieved. The method for preventing and treating noctuid pests in field crops can reduce the use amount of chemical pesticides, is beneficial to improving the quality and yield of organic products such as solanaceae vegetables and the like, is more beneficial to improving the yield and quality of solanaceae vegetables and fruits, and can be widely implemented and popularized.

Description

technical field [0001] The invention relates to the technical field of pest control, in particular to a method for preventing and controlling noctuid pests. Background technique [0002] At present, fruit-boring pests in field crops are mainly Lepidoptera Noctuidae, such as Heliothisassulta, Prodenia litura, Helicoverpa armigera and Agrotis ypsilon. Larvae of Lepidoptera Noctuidae mostly harm flowers and fruits, causing flower drop, fruit drop and fruit rot, forming cavities when harming leaves, and even eating up mesophyll, leaving only leaf veins. When it harms the fruits of Solanaceae crops such as peppers, the whole larvae penetrate into the fruit, eat the pericarp and placenta, and sew silk in the fruit, retain a large amount of feces, reduce the edibility of the fruit, and even affect the pepper fruit. quality and output. Therefore, effective control of noctuid moth fruit-boring pests is one of the key points in field crop management. [0003] People use artificiall...

Claims

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Application Information

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IPC IPC(8): A01N27/00A01N31/02A01N35/02A01N37/40A01N37/06A01N49/00A01P7/04
CPCA01N27/00A01N31/02A01N35/02A01N37/40A01N37/06A01N49/00
Inventor 李莉胡仙付汝鑫刘未韦云
Owner GUIZHOU NORMAL UNIVERSITY
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