従来、田螺の駆除法として▲１▼石灰窒素の散布、▲２▼田螺防除用ロータリー使用▲３▼進入防止網設置、▲４▼乾田転換法、▲５▼手取り等が主な技術であるが、▲１▼の技術は散布後の温度低下による効果半減等の不安定要因．、大量使用による土壌ｐＨバランスの破壊、降雨時の河川への流出等の問題を含む。▲２▼の技術は機械に要す費用と時間に比較し田螺駆除率は概ね５割位に留まり、残留固体がすぐに繁殖する。▲５▼の技術は視認した個体を駆除する方法で駆除率は非常に低いと推量できる。▲３▼▲４▼の技術は消極的技術であり、前者の場合は土中残留の冬眠個体には及ばず、後者の場合は乾田転換期間中は米・麦の収穫を望めない。 Conventionally, (1) lime-nitrogen spraying, (2) rotary use for paddy-screw removal, (3) intrusion prevention net installation, (4) dry paddy conversion method, and (5) hand-picking, etc. are the main techniques for removing rice screws. The technology of (1) is an unstable factor such as halving of the effect due to temperature drop after spraying. Including problems such as destruction of soil pH balance due to large-scale use and runoff into rivers during rainfall. In the technique (2), compared to the cost and time required for the machine, the field screwing rate stays at about 50%, and the residual solids propagate quickly. The technique (5) is a method of extinguishing a visually recognized individual, and it can be assumed that the extermination rate is very low. The technology of (3) and (4) is a passive technology. In the former case, it does not reach the hibernating individuals remaining in the soil, and in the latter case, harvesting of rice and wheat cannot be expected during the dry field conversion period.
従来の田螺防除法には以上に述べた問題点があった。
本発明は、以上のような欠点を無くすためになされたものである。The conventional rice screw control method has the problems described above.
The present invention has been made to eliminate the above drawbacks.
ＰＩＮＥ ＯＩＬ、或いはＰＩＮＥ ＮＥＥＤＬＥ ＯＩＬ、或いはＰＩＮＥＣＥＡＣＯＭＯＩＬ、或いはα−ＰＩＮＥＮＥ、またはこれ等を任意に混合したものに乳化剤を添加したもの。
本発明は、以上の構成よりなる田螺駆除剤である。PINE OIL, PINE NEEDLE OIL, PINECEACOMIL, α-PINENE, or any mixture of these, with an emulsifier added.
The present invention is a rice-pesticide having the above-described configuration.
本発明はこのような構成だから、水の入った田に原液または希釈した液を散布或いは流すだけで良く、僅かな労力で効果が得られ、特別な機器の必要は無い。
水中にいる田螺は勿論、土中に潜った田螺にも拡散した液の効果が及ぶ。
使用原材料は共に植物油であり、添加する乳化剤もグリセリン脂肪酸エステル、ソルビタン脂肪酸エステル、ショ糖脂肪酸エステル、プロピレングリコール脂肪酸エステル、レシチン等の食品用乳化剤を使用すれば実施に際して特に防毒のための防御は不要である。
実施した駆除剤は短時間内に拡散し、灌水中での液濃度は極めて低くなり稲や麦の幼苗に悪影響を与えることは無い。
灌水中に占める本発明の田螺駆除剤濃度は１ＰＰＭ前後で有効である。
本発明の使用原料の成分・性質・実効濃度から勘案し人体に及ぼす悪影響、稲に及ぼす悪影響、環境に及ぼす悪影響等は無い。
事実上、実施した田螺駆除剤はトンボの幼虫、蛙、カブトエビ、雑魚類等に対して特段の影響を与えず、良好な環維持が可能と観察できた。Since the present invention has such a configuration, it is only necessary to spray or flow a stock solution or a diluted solution over a field containing water, and an effect can be obtained with a little effort, and no special equipment is required.
The effect of the diffused liquid extends not only to the rice fields in the water but also to the rice fields that have been submerged in the soil.
The raw materials used are both vegetable oils, and the emulsifier to be added is not required for protection especially when using food emulsifiers such as glycerin fatty acid ester, sorbitan fatty acid ester, sucrose fatty acid ester, propylene glycol fatty acid ester and lecithin. It is.
The implemented pesticide diffuses within a short period of time, and the liquid concentration in the irrigation is extremely low and does not adversely affect rice or wheat seedlings.
The field pesticide concentration of the present invention in the irrigation is effective at around 1 PPM.
There are no adverse effects on the human body, adverse effects on rice, adverse effects on the environment, etc. in consideration of the ingredients, properties and effective concentrations of the raw materials used in the present invention.
In fact, it was observed that the field pesticides that were implemented had no particular effect on dragonfly larvae, moths, horseshoe shrimp, small fishes, etc., and that good ring maintenance was possible.
以下、本発明の実施例について説明する。
面積が５０メートル×６０メートルの田を２箇所用意した。
共に平均水深が１０センチメートルで、水面下にある土壌は泥状を呈しており、各々の田には毎１平方メートル当たり約４匹のジャンボ田螺が生息。
この２箇所の田は、灌水を浅く保つことによってジャンボ田螺を利用して雑草を除去しており、ジャンボ田螺や他の種の田螺の単位面積当たりの生息数はかなり密である。
２箇所の田をそれぞれ便宜上、Ａ・Ｂと呼称する。
Ａには、本発明の原液を水で１０００倍に先ず希釈し、農薬散布用の噴霧ポンプにて万遍無く灌水面上に散布した。
Ｂには、本発明の原液を希釈せず、風上位置から２０分ほどの時間をかけ徐々に滴下した。
実施日は気温３２度、風速１メートルと発表されており、Ｂ水面に滴下した原液は拡散しつつ、毎分５０〜６０センチメートルづつ風下方向に流され、滴下が完了した時点では相当の面積に拡散した。
Ａ・Ｂの２箇所において実施開始時刻より各々３０分が経過した時点にて、Ａにおける最初の噴霧地点周辺、Ｂにおける滴下地点周辺の田螺が不自然に急に動き始め、更に３０分経過した時点でほとんどの田螺が動きを止めた。
この状況の変化は、時間経過と共にＡでは最後に実施した地点周辺に及びＢでは風下側にある対面の畦周辺へと及んだ。
各々での実施開始より５時間経過後では殆どの田螺は動きを止め、それらの約２０パーセントは死亡し、残り約８０パーセント中の約２０パーセントの個体が時々僅かに身を動かす程度であった。
実施日の翌日Ａ・Ｂを観察したところ、水面上に浮いた個体と泥上にて動かぬ固体の全数が死亡しているのを確認した。
またＡ・Ｂに共通して泥部分に多数の穴が有るのを発見、それ等の最深部を確認したところ田螺が存在し、確認した全数が既に死亡していた。
実施日より連続して７日間Ａ・Ｂを観察したが、目視の範囲では生息する田螺の姿は一切認め得なかった。
噴霧器の先端ノズル径の太いものを使用すれば原液噴霧も可能であり、相当の時間短縮、労力軽減を図ることが可能である。
Ａ・Ｂの各辺の長さと平均水深からＡ・Ｂにおける灌水の総容積が得られ実施した原液の使用量より、灌水中に占める原液濃度は約１ＰＰＭである。
この数値は、実験段階で既に得ていた有効濃度の範疇に入る。Examples of the present invention will be described below.
Two rice fields with an area of 50 meters x 60 meters were prepared.
Both have an average water depth of 10 centimeters, and the soil beneath the surface is mud. Each rice field has about 4 jumbo paddles per square meter.
These two fields use jumbo paddles to remove weeds by keeping the irrigation shallow, and the number of inhabitants per unit area of jumbo paddles and other types of paddles is fairly dense.
The two rice fields are called A and B for convenience.
In A, the stock solution of the present invention was first diluted 1000 times with water, and sprayed uniformly on the irrigation surface with a spray pump for spraying agricultural chemicals.
In B, the stock solution of the present invention was not diluted and was gradually added dropwise over about 20 minutes from the windward position.
It is announced that the air temperature is 32 degrees and the wind speed is 1 meter, and the stock solution dripped onto the surface of water B is diffused and flowed in the leeward direction at 50 to 60 centimeters per minute. Diffused.
At the time when 30 minutes have elapsed from the start time at the two locations A and B, the screw around the first spraying point in A and around the dropping point in B suddenly started to move unnaturally, and another 30 minutes passed. At that point, most of the rice screws stopped moving.
Over time, this change in the situation reached around the point where it was last implemented in A, and around B on the leeward side in B.
After 5 hours from the start of each practice, most of the rice screws stopped moving, about 20 percent of them died, and about 20 percent of the remaining 80 percent were only slightly moving from time to time. .
Observation of A and B on the next day of the implementation date confirmed that all the solids floating on the water surface and solids that did not move on the mud were dead.
Also, in common with A and B, it was found that there were many holes in the mud part, and when the deepest part was confirmed, there was a field screw, and all the confirmed numbers had already died.
Although A and B were observed for 7 consecutive days from the date of implementation, no figure of the inhabiting paddle was observed in the visible range.
By using a sprayer having a large tip nozzle diameter, it is possible to spray a stock solution, and it is possible to considerably reduce time and labor.
Based on the length of each side of A and B and the average water depth, the total volume of irrigation in A and B is obtained, and the concentration of the stock solution in the irrigation is about 1 PPM based on the amount of stock solution used.
This value falls within the range of effective concentrations already obtained in the experimental stage.