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ホーム > 組織別情報 > 産業部 > 農林技術研究所 > 農村植生管理プロジェクト > English > Types of research we conduct

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更新日:平成23年4月1日

地域の力で農業力をアップ 静岡県農林技術研究所 農村植生管理プロジェクト

Types of research we conduct
(details of our research)

(1) To develop rice spotting shield bug controlling technologies

Control of rice spotting shield bugs through ecological control of feeding plants

Rice spotting shield bug
Rice spotting shield bug

Rice spotting shield bugs feed on a variety of grass plants before they finally infest the paddy fields. A pest control technology against rice spotting shield bugs will be established, through the identification of host plants on which these bugs feed for each season.

The weeds that rice spotting shield bugs prefer are important targets for weed control, but on the other hand, the plants that these bugs dislike can potentially be used as repellants. Furthermore, consideration will be given to plants that rice spotting shield bugs particularly prefer as they can also be used as trapping (entrapment) plants in order to bring these bugs together in order to control them.

Revealing mysterious life history of wolf (lycosid) spiders

Wolf spider
Wolf spider

An important natural predator of paddy rice insect bugs is the wolf spider. Wolf spiders move around inside paddy fields as well as along the paths between the paddy fields to prey on the larvae of the rice spotting shield bugs as well as Unka (Japanese name for various small insects up to 5 mm in length that infest rice plants) and leafhoppers. However, the kind of life wolf spiders lead or the extent of their movement is not known. We will, therefore, reveal the mysteries of the life history of wolf spiders, and also conserve and breed wolf spiders in order to consider control technologies for the paths between paddy fields to suppress the outbreak of insect pests.

Control of rice spotting shield bugs by utilizing endophytic microorganisms

Plants that have been infected by"endophytic" microorganisms, which coexist within plants, have been known to improve insect and drought resistance. Italian ryegrass, which is used as a feed crop or a greening resource has been suggested to be a host plant for rice spotting shield bugs, but once they are infected by endophytic microorganisms, they are known to repel these bugs. Therefore, a suppression technology will be considered against rice spotting shield bugs through the utilization of endophyte-infected strains that have been confirmed to be non-toxicity against livestock or cause any horizontal infections.

Weed control by utilizing crickets

Cricket
Cricket

When we think about natural predators useful for agriculture, we tend to think of carnivorous organisms that capture and consume insect pests, but it has been made clear by research in Europe and the United States that seed eating microorganisms can control weeds by eating the seeds of the weeds.

For this reason, we will consider a weed-control technology that utilizes the natural predators against weeds, focusing on seed eating insects that live in Japan, such as ground beetles and crickets, as well as evaluating their ability to capture and consume the seeds of weeds.

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(2) Farming support through utilization of landscaping plants

Conservation and breeding of natural predators through utilization of landscaping plants such as lotus or buckwheat

Buckwheat flowers
Buckwheat flowers

Lotus has been used since the olden days as green manure, but from our investigations, it became apparent that when lotus is cultivated within paddy fields, the number of wolf spiders, which are the natural predators of insect pests, increase throughout the rice-growing season.

Buckwheat, on the other hand, has been cultivated as part of a cultivation abandonment strategy recently and it has been used for events in regional communities, as well as food education. However, from our investigation it became known that it is effective for maintaining parasitic bees, which are the natural predators of insect pests.

In this manner, investigations into landscaping plants already in use can reveal that they also have unrealized potential. We will, therefore, bring to light plants utilized for landscaping to control weeds in idle farming land and paths between paddy fields, as well as natural predator conservation effects in order to ascertain effective utilization methods for insect pests and weed control.

Ecological evaluation of "Chakusaba" (tea grass cultivating field), which is a characteristic of landscapes in Shizuoka Prefecture.

In order to raise the quality of green tea, the process of lying grass sheared from tea grass cultivating fields on the perimeters of tea fields is conducted in Shizuoka Prefecture. Rural and mountain grassland environments have been sustained in tea-grass-cultivating fields through farming activities by farming households resulting in the conservation of precious meadow plants that are represented in the seven autumnal flowers of Japan.

The tea-grass-cultivating field is drawing a lot of attention from numerous researchers both domestically and overseas as an example of the diversity of living organisms preserved through farming activities. In order to disseminate this value, we will continue the advancement of our scientific analysis on the value of tea grass cultivating fields in the future.

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(3) Building agricultural business through utilization of regional community resources

Search for potential farmer markets as sites for interchanges

The roles expected of direct sales stores and farmer markets, which have been spreading in recent years, are not limited simply to sites for selling agricultural products. So what are consumers searching for at such sites? Furthermore, would it be possible to utilize them as sites for interchanges or for disseminating information also?

We will investigate the needs of consumers and consider the potential of direct sales stores and farmer markets as sites for interchanges.

Investigation of needs for farming

The distance between the sites of agricultural production and the residential environment of consumers is short and their mixed existence is also evident in Shizuoka Prefecture. What is the impression of farming from the perspective of local residents under such circumstances? Furthermore, what do they expect from farming in the regional community? We will investigate this in order to capture the awareness for "farming in the regional community" and their needs, to create attractive regional communities that center around farming activities.

Search for the potential of green tea tourism

Green tea tourism
Green tea tourism

"Tea" and "tea plantations" are important tourism resources for Shizuoka Prefecture, which is a tea-growing region. A business model for green tea tourism suitable for Shizuoka Prefecture will be considered through marketing surveys concerning tourism and tea within and outside Japan as well as comparative research into eco-tourism overseas.

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(4) Preparing regional community resource management

Gain an understanding of idle farming lands through the utilization of satellite image data

Gaining an understanding of the status of idle farming lands, which are dotted across the country, requires manpower and financing. Furthermore, even when investigations are made, the status of idle farming lands change year after year.

We will develop technologies to gain an understanding on the idle farming lands and abandoned cultivated lands with a bird’s eye view using satellite image data.

Analysis of the vegetation favorable for rice spotting shield bugs by using satellite images and aerial photographs

Understanding the distribution of feeding plants for rice spotting shield bugs is extremely important for considering the control methods of these bugs. We will develop technologies to gain an understanding on the distribution of plants that become problems by looking into their wavelength characteristics, which are unique to each individual plant species.

Preparation of hazard maps that indicate risks for the occurrence of rice spotting shield bugs

The number of rice spotting shield bugs is more in some regions and less in others, but it appears that such a distribution may be set. Data on the occurrence of rice spotting shield bugs, with corresponding information on the terrain of paddy fields collected each year by the Shizuoka Plant Disease and Insect Control Station, Shizuoka Prefectural Research Institute of Agriculture and Forestry, as well as meteorological conditions and surrounding environments will be analyzed to reveal environmental conditions in which rice spotting shield bugs are apt to occupy, and prepare hazard maps that indicate regions where these bugs tend to congregate.

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お問い合わせ

静岡県農林技術研究所
〒438-0803 静岡県磐田市富丘678-1
電話番号:0538-36-1553
ファックス番号:0538-37-8466

メール:agrikikaku@pref.shizuoka.lg.jp