conclusions from the working group on globular tree ... · núria banyuls, valentino bosco,...
TRANSCRIPT
Workshop on harmonized dose expression for the zonal evaluation of plant protection products in high growing crops
Vienna, 2016-10-18/20
Conclusions from the Working Group on Globular Tree Orchards (Citrus, Olives…)
Chair: Patricia ChuecaCo-chair: Antonio Miranda
Rapporteurs: Agustí Soler and Dario SterziSupport: Juan M. Cantus and Elena Gutiérrez
Núria Banyuls, Valentino Bosco, Charlotte Cornish-Bowden, Evangelos Karanasios, Véronique Mironet, Jean-Luc Rison, Kerstin Schlechter, Vlasta Zlof
CITRUS
CITRUS Citrus tree characteristics:
0
1
2
3
4
5
6
Altura de copa (m) Diámetro entre árboles (m)
Diámetro entre filas (m)
Parcela 1Parcela 2Parcela 3Parcela 4Parcela 5Parcela 6Parcela 7
Height (m) Diam. Along row(m)
Diam. Across row(m)
Orchard 1
Orchard 2
Orchard 3
Orchard 4
Orchard 5
Orchard 6
Orchard 7
CITRUS LWA versus Canopy volume
y = 0,1198x + 8216R² = 0,0819
0
2000
4000
6000
8000
10000
12000
14000
16000
0 5000 10000 15000 20000 25000 30000
LWA
(m3 /
ha)
Ellipsoid (m3 veg/ha)
CITRUS TRV versus Canopy volume
y = 1,0586x + 8141,9R² = 0,6507
0
5000
10000
15000
20000
25000
30000
35000
40000
0 5000 10000 15000 20000 25000 30000
TRV
(m3 /
ha)
Ellipsoid (m3 veg/ha)
CASE OF STUDY Citrus orchard characteristics:
*The tree shape was consider a ellipsoid
Treatment characteristics:
Orchard Crop Spacing(mxm)
Canopyheight(m)
Diam-cross(m)
Diam-lengh(m)
Shape tree*(m3 veg/ha)
TRV (m3/ha)
LWA(m2/ha)
1 Washington orange
5x4 1.5 4 4 6300 12000 6000
2 Washington orange
4x2 1.3 2 2 3400 6500 6500
Orchard Treatment
Prod. [] (g/hl) Spray vol. (L/ha)
Dose(kg/ha)
Dose(kg/10000 LWAha)
Dose(kg/10000 TRV ha)
Dose (kg/10000 m3 veg ha)
1 1 1 20 1200 2400 4000 2000 3800
1 2 1 30 1200 3600 6000 3000 5700
1 3 1 60 1200 7200 12000 6000 11500
2 4 1 20 1300 2600 4000 4000 7600
2 5 1 30 1300 3900 6000 6000 11500
2 6 1 60 1300 7800 12000 12000 22900
Main characteristics of the olive orchards in Spain
Olive orchard cultivation systems
Superintensive system Intensive system
2%* 24%*
* Data referred to the harvested area (AEMO, 2012)
Traditional system
89 m3
42 m3
50 m 76 % (AEMO, 2012)
Main characteristics of the olive orchards in Spain
Intensive system
• Plantation density: 204 ha-1
• Number of trunks: 1
• Average height: 3.91 m
• Average diameter: 3.92 m
• Average volume: 24.60 m3
1-trunk traditional
system• Plantation density: 100 ha-1
• Number of trunks: 1
• Average height: 4.52 m
• Average diameter: 4.56 m
• Average volume: 33.49 m3
Traditional system
• Plantation density: 69 ha-1
• Number of trunks: 2 – 4
• Average height: 4.58 m
• Average diameter: 6.34 m
• Average volume: 98.08 m3
Main characteristics of the olive orchards in Spain
GTOs: Key Conclusions• Starting point Kick-off for a WG on dose expression (& adjustment?) in
globular tree orchards (GTOs) – we are at an initial stage!
• Proposal for present & short-term approach Continue using product concentration, combined with rationalized (& harmonized) water rates
• Proposal for next season Development of scientific guidelines for modelling of water rates in GTOs.
• Proposal for mid-term Since validation is missing for proposed models in GTOs (LWA, TRV, GTV), proposal to dedicate 2 years to generate new trial data with harmonized study protocols. Independent analyses of anonymized trial data by crop experts. Final decision based on robustnessand practicality
GTOs: Proposals forTrial parameter inputs
• Measure both diameters in globular trees (canopy widths)
• Measure distance between trees in a row (spacing within row)
• Note actual water volume as well as theoretical water volume (crop-adapted water volume, e.g. 0,11-0,12 L/m3)
GTOs: Proposals forExcel Tool for Dose Conversions
• Replace “isolated” by “globular”• Introduce “globular diameter” measurements• Introduce possibility of cutting spray on crop gaps (electronic devices or
manual applications)• When relevant (e.g. citrus), introduce crop density as “crop factor” (CF)• Same tool for dose adjustment?
GTOs: Prospects
Dose = Concentration x Water Volume
g/hL
11g/m3 TRV
8L/m2 LWA
3L/m3 TRV
3g/m2 LWA
1GTV? GTV?
Workshop on harmonized dose expression for the zonal evaluation of plant protection products in high growing crops
Vienna, 2016-10-18/20
Conclusions from the Working Group on Globular Tree Orchards (Citrus, Olives…)
Chair: Patricia ChuecaCo-chair: Antonio Miranda
Rapporteurs: Agustí Soler and Dario SterziSupport: Juan M. Cantus and Elena Gutiérrez
Núria Banyuls, Valentino Bosco, Charlotte Cornish-Bowden, Evangelos Karanasios, Véronique Mironet, Jean-Luc Rison, Kerstin Schlechter, Vlasta Zlof