Equipment for crop protection. Method for measurement of potential spray drift from horizontal boom sprayers by the use of a test bench

2015 ◽  
Keyword(s):  
Test Bench ◽  
Crop Protection ◽  
Spray Drift ◽  
Protection Method

scholarly journals Evaluation of yield quality and weed infestation of common valerian (Valeriana officinalis L.) in dependence on weed control method and forecrop.

2012 ◽  
Vol 63 (2) ◽  
pp. 179-188 ◽  
Author(s):  
Cezary Kwiatkowski
Keyword(s):  
Winter Wheat ◽  
Weed Control ◽  
Cover Crop ◽  
Crop Protection ◽  
Field Pea ◽  
Raw Material ◽  
Wheat Field ◽  
Protection Method ◽  
Weed Infestation ◽  
Positive Effect

A field experiment involving the cultivation of common valerian was conducted on loess soil in Abramów (Lublin region) in the period 2007-2009. Qualitative parameters of herbal raw material obtained from this plant as well as in-crop weed infestation were evaluated depending on the protection method and forecrop. Hand-weeded plots, in which a hand hoe was used, were the control. In the other treatments, weeds were controlled using various herbicides and a mechanical implement (brush weeder). Potato and winter wheat + field pea cover crop were the forecrops for common valerian crops. A hypothesis was made that the use of a brush weeder and herbicides not registered for application in valerian crops would have a positive effect on this plant's productivity and weed infestation in its crops. It was also assumed that the introduction of a cover crop would allow the elimination of differences in the forecrop value of the crop stands in question. The best quantitative and qualitative parameters of common valerian raw material as well as the largest reduction of incrop weed infestation were recorded after the application of the herbicides which were not type approved. The use of the brush weeder in the interrows also had a beneficial effect on productivity of the plant in question, but secondary weed infestation at the end of the growing season of common valerian turned out to be its disadvantage. Traditional crop protection methods used in common valerian crops were less effective in weed infestation reduction and they resulted in lower plant productivity and raw material quality. Potato proved to be a better forecrop for common valerian than winter wheat + field pea; however, this positive effect was not confirmed statistically. The following annual weeds: <i>Chenopodium album</i>, <i>Galinsoga parviflora</i>, <i>Stellaria media</i>, were predominant in the common valerian crop. Traditional weed control methods resulted in the dominance of some dicotyledonous weeds, such as <i>Viola arvensis</i>, <i>Galium aparine</i>, <i>Capsella bursa-pastoris</i>.

scholarly journals Effect of insecticide formulation and adjuvant combination on agricultural spray drift

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7136 ◽  
Author(s):  
Collin J. Preftakes ◽  
Jerome J. Schleier ◽  
Greg R. Kruger ◽  
David K. Weaver ◽  
Robert K.D. Peterson
Keyword(s):  
Wind Tunnel ◽  
Crop Protection ◽  
Spray Drift ◽  
Indirect Methods ◽  
Product Formulation ◽  
Spray Solution ◽  
Droplet Sizes ◽  
Wind Tunnel Data ◽  
Field Experimentation ◽  
Strong Agreement

Loss of crop protection products when agricultural spray applications drift has economic and ecological consequences. Modification of the spray solution through tank additives and product formulation is an important drift reduction strategy that could mitigate these effects, but has been studied less than most other strategies. Therefore, an experimental field study was conducted to evaluate spray drift resulting from agricultural ground applications of an insecticide formulated as a suspension concentrate (SC) and as a wettable powder (WP), with and without two adjuvants. Droplet sizes were also measured in a wind tunnel to determine if indirect methods could be substituted for field experimentation to quantify spray drift from these technologies. Results suggest that spray drift was reduced by 37% when comparing the SC to the WP formulation. As much as 63% drift reduction was achieved by incorporating certain spray adjuvants, but this depended on the formulation/adjuvant combination. The wind tunnel data for droplet spectra showed strong agreement with field deposition trends, suggesting that droplet statistics could be used to estimate drift reduction of spray solutions. These findings can be used to develop a classification scheme for formulated products and tank additives based on their potential for reducing spray drift.

scholarly journals Ecological impact in ditch mesocosms of simulated spray drift from a crop protection program for potatoes

2006 ◽  
Vol 2 (2) ◽  
pp. 105-125 ◽  
Author(s):  
Gertie HP Arts ◽  
Laura L Buijse-Bogdan ◽  
J Dick M Belgers ◽  
Caroline H van Rhenen-Kersten ◽  
Rene PA van Wijngaarden ◽  
...  
Keyword(s):  
Ecological Impact ◽  
Crop Protection ◽  
Spray Drift

scholarly journals Polyphenol oxidase and lysozyme mediate induction of systemic resistance in tomato, when a bioelicitor is used

2015 ◽  
Vol 55 (4) ◽  
pp. 343-350 ◽  
Author(s):  
Navodit Goel ◽  
Prabir Kumar Paul
Keyword(s):  
Pseudomonas Syringae ◽  
Polyphenol Oxidase ◽  
Systemic Acquired Resistance ◽  
De Novo ◽  
Acquired Resistance ◽  
Crop Protection ◽  
Systemic Resistance ◽  
Neem Extract ◽  
Single Node ◽  
Protection Method

Abstract Tomato (Solanum lycopersicum L.) is attacked by Pseudomonas syringae pv. tomato causing heavy damage to the crops. The present study focused on the application of aqueous fruit extracts of neem (Azadirachta indica L.) on a single node of aseptically raised tomato plants. Observations were done, and the changes in the activity and isoenzyme profile of polyphenol oxidase (PPO) and lysozyme, both at the site of treatment as well as away from it, were noted. The results demonstrate that neem extract could significantly induce the activities of both the enzymes as well as upregulate the de novo expression of additional PPO isoenzymes. Induction of systemic acquired resistance (SAR) by natural plant extracts is a potent eco-friendly crop protection method.

scholarly journals Influence of wind velocity and wind direction on measurements of spray drift potential of boom sprayers using drift test bench

2015 ◽  
Vol 202 ◽  
pp. 94-101 ◽  
Author(s):  
Emilio Gil ◽  
Montserrat Gallart ◽  
Paolo Balsari ◽  
Paolo Marucco ◽  
Mª Pilar Almajano ◽  
...  
Keyword(s):  
Wind Velocity ◽  
Wind Direction ◽  
Test Bench ◽  
Spray Drift ◽  
Drift Potential

scholarly journals A Method for Assessing Drift Potential of a Citrus Herbicide Applicator

2011 ◽  
Vol 21 (6) ◽  
pp. 745-751 ◽  
Author(s):  
Giuseppe Vanella ◽  
Masoud Salyani ◽  
Paolo Balsari ◽  
Stephen H. Futch ◽  
Roy D. Sweeb
Keyword(s):  
Test Bench ◽  
Block Design ◽  
Spray Drift ◽  
Ground Speed ◽  
Potential Index ◽  
Randomized Block Design ◽  
Drift Potential ◽  
Extended Range ◽  
Calm Wind ◽  
Main Factor

The main objective of this study was to evaluate the suitability of the DEIAFA drift test bench system (Dipartimento di Economia e Ingegneria Agraria, Forestale e Ambientale; University of Torino, Italy) for assessing drift potential of a citrus (Citrus sp.) herbicide applicator. The study involved testing the effects of spray drift shield, nozzle type, and ground speed on drift potential of the applications. It was carried out in randomized block design within a split-split-plot experiment with five replications. A computational analysis procedure for evaluation of deposit values, measured along the test bench, was developed to compare the treatments in terms of a drift potential index (DPI). The methodology provided repeatable results. Among the treatments, ground speed was the main factor affecting the DPI. Both nozzle types tested [flat fan extended range nozzle (XR) and wide-angle deflector nozzle (TT)] showed higher DPI at faster speed. Decreasing the ground speed from 6.0 to 3.0 km·h−1 decreased the drift potential on average ≈35%. The performance of XR nozzle was improved by the presence of spray drift shield (27% reduction in DPI). However, the shield did not affect the drift potential of the TT nozzle significantly. The results were significantly affected by the wind velocity normalized by its direction relative to the sprayer travel; therefore, the tests should be carried out in relatively calm wind conditions, as much as possible.

Sign in / Sign up

Export Citation Format

Share Document