Dosage of plant protection products adapted to leaf area index in viticulture

Siegfried, W.; Viret, Olivier; Huber, B.; Wohlhauser, R.

doi:10.1016/j.cropro.2006.04.002

Cited by 89 publications

(61 citation statements)

References 10 publications

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“…One measure of crop surface area is leaf area index (LAI), which is the ratio of total upper leaf surface of vegetation divided by the surface area of the land on which the vegetation grows (Watson 1947). Data reported by Siegfried et al (2007) indicate that for grapevines at full foliage development and LAI greater than 1.0 the leaf deposits (indicative of bunch deposits) are inversely proportional to the LAI. However, for any given LAI (e.g.…”

Section: Please Scroll Down For Articlementioning

confidence: 98%

A new tool for the evaluation of crop residue trial data (day-zero-plus decline)

MacLachlan¹,

Hamilton²

2010

Food Additives & Contaminants: Part A

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An approach is presented for the prediction of pesticide residue concentrations in food and feed commodities produced from foliar-treated crops. It uses limited residue trial data and relies on information on spray retention and decline rates of residues following application. The use of the simple approach is demonstrated for residues of a variety of pesticides and the results compared with data sets evaluated by the Joint FAO/WHO Meeting on Pesticide Residues (JMPR) using expert judgement and also with estimates of high residues obtained using statistical methods. It is proposed that the approach should constitute an additional tool for the risk assessment of pesticide residues; it contributes to the estimation of maximum residue limits (MRLs) and high and median residues, which are needed for risk assessment. The approach should be particularly useful in situations where only a few residue trials are available such as often occurs for minor crops.

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Section: Please Scroll Down For Articlementioning

confidence: 98%

A new tool for the evaluation of crop residue trial data (day-zero-plus decline)

MacLachlan¹,

Hamilton²

2010

Food Additives & Contaminants: Part A

View full text Add to dashboard Cite

show abstract

“…However, the LAI has a closer relationship with PRV than with canopy height, since the PRV value, apart from taking into account canopy height also takes into account the development of the leaves in an indirect way from the width of the vegetation. The model relating LAI with PRV corresponds to a power equation, similar to the model reported by Siegfried et al (2007) to relate LAI and VRV (Vine Row Volume) in grapevine.…”

Section: Development Of the Model To Estimate The Laimentioning

confidence: 99%

“…One method is the "Tree-Row Volume" (TRV) (Byers et al, 1971), whereby the application rate is determined by comparing the crop canopy volume per surface-area unit with the rate applied to a standard crop. This method specifi es the application rates in a more methodical way and has rendered good results in orchards (Sutton and Unrath, 1988;Rüegg et al, 1999;Gil et al, 2007;Siegfried et al, 2007). A simpler system was proposed by Furness et al (1998), called "Unit Canopy Row" (UCR), in which the application rate was determined by each unit of 100 m 3 .…”

Section: Introductionmentioning

confidence: 99%

Volume application rate adapted to the canopy size in greenhouse tomato crops

López

Páez

Rincón

et al. 2013

Sci. agric. (Piracicaba, Braz.)

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The application rate of plant-protection products is indicated as a concentration or amount of product per area. Greenhouse crops grow swiftly, and an application rate based on a fi xed amount of product per hectare can result either in large losses and overdoses when the plants are small or to be insuffi cient when the plants are fully developed. To solve these problems, the application rates of plant-protection products need to be adapted to the plant mass present in the greenhouse when the spray is applied. Two models were developed to estimate the leaf area based on easily measured geometric data of the vegetation in a greenhouse tomato crop.The model based on the PRV (Plant Row Volume) had that best results. The calculation of the volume application rate from the PRV has resulted in a reduction of more than 30 % of the quantity of plant protection product sprayed, without decreasing yield. The PRV of a greenhouse tomato (Lycopersicon esculentum Mill.) is an easily measured parameter that enables the estimation of the leaf area index and the use of application strategies adapted to the changes in the plant canopy, saving major amounts of plant protection product used, compared to the conventional system.

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“…Other DSSs, such as Coptimizer (Kuflik et al, 2009), are specifically aimed at keeping the amount of fungicides below the regulatory threshold, adjusting the copper dose on the basis of the grape growth stage, amount of rainfall and shoot growth. Another group of DSSs were developed with the specific aim of adapting the fungicide dose to the vine canopy characteristics, such as Dosavina (Gil et al, 2011), LAI adapted dosage (Siegfried et al, 2007), and Optidose ® (Davy et al, 2010). Despite their promises, most DSSs have contributed little to practical agriculture (Magarey et al, 2002) because of some limits that slow down a the wider adoption of DSS in viticulture, as: i) their high specificity (e.g.…”

Section: A Step Forward: Decision Support Systemsmentioning

confidence: 99%

A critical review of plant protection tools for reducing pesticide use on grapevine and new perspectives for the implementation of IPM in viticulture

Pertot¹,

et al. 2017

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a b s t r a c tSeveral pests and diseases have grapevine as their favourite host and the vineyard as preferred environment, so an intensive pesticide schedule is usually required to meet qualitative and quantitative production standards. The need to prevent the negative impact of synthetic chemical pesticides on human health and the environment and the consumer expectations in term of chemical residues in food stimulated the research of innovative tools and methods for sustainable pest management. The research project PURE (www.pure-ipm.eu) was a Europe-wide framework, which demonstrated that several solutions are now available for the growers and evaluated several new alternatives that are under development or almost ready for being applied in practice. Although the use of resistant/tolerant varieties is not yet feasible in several traditional grape growing areas, at least part of the synthetic chemical pesticides can be substituted with biocontrol agents to control pests and pathogens and/or pheromone mating disruption, or the number of treatments can be reduced by the use of decision support systems, which identify the optimal timing for the applications. This review presents the state of the art and the perspectives in the field of grapevine protection tools and strategies.

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Dosage of plant protection products adapted to leaf area index in viticulture

Cited by 89 publications

References 10 publications

A new tool for the evaluation of crop residue trial data (day-zero-plus decline)

A new tool for the evaluation of crop residue trial data (day-zero-plus decline)

Volume application rate adapted to the canopy size in greenhouse tomato crops

A critical review of plant protection tools for reducing pesticide use on grapevine and new perspectives for the implementation of IPM in viticulture

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