大豆に除草剤を投与した後の残留効果と投与間隔
Milena Baretta Franceschetti1, Elias Silva de Medeiros1, Guilherme Pereira da Silva1
1Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil.
まとめ
大豆の植物毒性は,除草剤の種類と植え付け前の適用タイミングによって異なります. ディカンバは最も多くのダメージを引き起こし,フロロキシピル+クレソジムは最も安全で,ディカンバとイマザピル+イマザピルで収穫量の減少が観察されました.
科学分野:
- 農業科学 農業科学とは
- アグロノミーは農学です.
- 雑草科学 雑草科学とは
背景:
- 非選択的除草剤は, *Conyza* spp. のバーンダウンのために頻繁に使用されます. 大豆を植える前に.
- 植物の損傷を防ぐために,除草剤の適用と大豆の播種間の植え戻り間隔を遵守することは極めて重要です.
研究 の 目的:
- 種まき前に異なる間隔で適用された大豆に対する一般的な発芽後の除草剤の植物毒性を評価する.
- 許容可能な作物安全性のある除草剤を特定し, *Conyza* spp. の最適な植え戻り期間を決定する. コントロール. コントロール.
主な方法:
- 4つのレプリケートを持つ6x4+2のファクトリアルデザインを使用したフィールド実験.
- 6種類の除草剤 (ハラキシフェン+ディクロスラーム,トリクロピル,フルーロキシピル+クレソディム,アトラジン+メソトリオン,ディカンバ,イマザピル+イマザピル) を,大豆の播種 (DBS) の0,15,30,45日前に投与する.
- 異なる適用タイミングでの大豆の植物毒性と収穫量の評価.
主要な成果:
- ディカンバは,0 DBSで70%から45 DBSで6%まで,大豆に重大な植物毒性をもたらしました.
- アトラジン + メソトリオンとイマザピク + イマザピルも0 DBSで植物毒性を示した (それぞれ40%と10%).
- ディカンバとイマザピク+イマザピルは大豆の収穫量を著しく低下させ,フルーロキシピル+クレソジムは低植物毒性を示した.
結論:
- 除草剤の選択と適用タイミングは,大豆の安全性と収穫量に大きな影響を与えます.
- ディカンバは,植え直後の間隔に関係なく,大豆の損傷のリスクが最も高くなります.
- フルロキシピル + クレトジムは,種まき直前に適用しても,最小限の植物毒性を示し,評価された最も安全な除草剤の選択肢です.
キーワード:
コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp. コニザ (Conyza) spp.早期管理は早期管理である.フリーバネ (fleabane) とはプレエマージェンスのプレエマージェンスのことです.関連する概念動画
Prediction Intervals
3.4K
The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
3.4K
Residual Plots
6.5K
A residual plot is a statistical representation of data used to analyze correlation and regression results. It helps verify the requirements for drawing specific conclusions about correlation and regression. To obtain the residual plot, first, the residual for each data value is calculated, which is simply the vertical distance between the observed and the predicted value obtained from the regression equation.
When the residual values are plotted against the variable x, it is called a residual...
When the residual values are plotted against the variable x, it is called a residual...
6.5K
Residual Stresses
671
Residual stresses reside in a structure even after removing the original stress inducer. This phenomenon often arises from varied plastic deformations across different parts of a structure. Consider a rod stretched beyond its yield point. It will not regain its original length due to permanent deformation. Even after load removal, the rod does not entirely lose stress because of uneven plastic deformations, resulting in residual stresses. The computation of these stresses in structures is...
671
Confidence Intervals
10.8K
An unbiased point estimate is often insufficient to predict a population estimate, such as population mean or population proportion. In this scenario, a confidence interval is used. A confidence interval is an estimate similar to a sample proportion. However, unlike the point estimate which is a single value, the confidence interval contains a range of values. These values have lower and upper limits, known as confidence limits, and can be designated as L1 and L2, respectively.
A...
A...
10.8K
Improper Integrals: Infinite Intervals
118
An integral is classified as improper due to an infinite interval when at least one of its limits of integration extends to positive or negative infinity. In such cases, the region under the curve is unbounded, and standard techniques for evaluating definite integrals are not directly applicable. Instead, the improper integral is defined through a limiting process that allows one to determine whether the accumulated area remains finite despite the infinite domain.Application to Exponential...
118
Residual Stresses in Circular Shafts
550
In materials that exhibit elastic and plastic behavior, known as elastoplastic materials, residual stresses can accumulate when these materials experience plastic deformation. This deformation arises from either high levels of shearing stress or significant strains. Residual stresses are internal stresses that persist within a material after removing the external force causing deformation. This phenomenon is demonstrated when observing the behavior of a shaft under torque; notably, the...
550


