18th Congress of the European Society for Agronomy

Introduction
Weeds are the most harmful pest among those targeted by pesticides for arable crops but they are also are beneficial (e.g. feeding wild fauna). If herbicides are the most effective to control them, their consequences on health and environment compel to reduce their use. To achieve this goal, farmers need to combine several partially effective techniques. While the effects of each...

1. Introduction
   Livestock farms are a major contributor to environmental impacts [1]. For dairy farms, one strategy for reducing these impacts is to increase the share of grass in the animals' diet [2]. However, this increases their dependence on grass growth, and therefore on the climate, in the context of climate change. This raises questions about the possibility of reconciling...

In vegetable long value chains, products’ perishability requires to precisely plan production. Such planning has to respect middlemen (e.g., cooperatives or wholesalers) expectations: quantity and timing of supply. Besides farmers have constraints and objective including farm land, crop rotation, workload, and viable income. Middlemen agree with regular suppliers on a planned supply calendar,...

1. Introduction

There is an increasing need to improve soil quality (SQ) to preserve agricultural productivity and environmental benefits. While farmers can improve SQ by changing their production management (PM: set of farming practices), this can affect their farm income and therefore constitutes a challenge that can restrain them from improving SQ. To overcome this...

1 Introduction
As a perennial crop, grapevine life history covers many decades, and the vines are exposed year after year to several biotic and abiotic hazards. The cumulative effect of such exposures influences the present health and productive potential of the vines. It is there important to understand the vine past in order to manage them properly.
The protection of crops against pests...

Agriculture must reconcile food production, energy production and conservation of the environment, while ensuring a fair income to farmers. This requires a shift towards new production systems, based on both ecological intensification and technical innovations, adapted to local conditions and usable by farmers. To address this issue, the French technical institutes on arable crops ARVALIS,...