Changing ways of thinking to produce organic sugar beet

1. P. Tauvel, JC. Germain – IIRB – 11th of February 2020
1
Changing ways of thinking
to produce organic sugar
beet

2. 2
Introduction

3. 3
Method
?

4. 4
Method
Transplantation + 10 days

5. 5
Results – Liesse-Notre-Dame (FR) 2019
Cercospora leaf spot
severity (0 to 10)
1.5 1 5.5
Pest management No damage
Weed management
satisfaction score (0 to
10)
7 8 9
45x30 seedling
Conventional
seedling
Transplantation
Seedling date 5th April 25th April 18th April
Plant population (pl/ha) 74 000 100 000 66 000
Stand establishment
(pl/ha)
61 000 87 000 59 000
AUC 92 000 71 000 96 000
% Fangy sugar beet 23 23 88
Estimated yield (t/ha) 76 51 65

6. 6
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
45x30 seedling Conventional seedling Transplantation
Workorce (weeding)
Workforce (seedling/transplantation)
Mechanisation cost
Inputs
Seeds/Plants
Intercropping/Soil preparation
€/ha

7. 7
Changing ways of thinking
1. Seedling later
2. Reducing plant population
3. Managing weeds earlier than advised in conventional
production

8. 8
Thank you for your
attention