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(Mediterranean Agricultural Information Network) Fostering cooperation and experience sharing among the national information systems on agricultural (cereals) markets in the Mediterranean. The network of 13 countries is coordinated by CIHEAM, and more specifically by its Mediterranean Agronomic Institute (MAI) of Montpellier.
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Stagnation des rendements de plusieurs céréales en France depuis la fin des années 1990

Stagnation des rendements de plusieurs céréales en France depuis la fin des années 1990 | MED-Amin network | Scoop.it

Dans les Scientific Reports de Nature de novembre 2018, une équipe internationale analyse sur le long terme les rendements des principales cultures en France, mettant en évidence une stagnation depuis la fin de la décennie 1990.

De précédents travaux avaient fait ressortir une stagnation des rendements de blé depuis 1996. Ici, les chercheurs se sont intéressés à la fois aux céréales (blé, maïs, orge, avoine), aux oléagineux (tournesol, colza), aux betteraves sucrières, aux pommes de terre et à la vigne. Pour chacune des cultures étudiées, ils ont eu recours aux données de la Statistique agricole annuelle, au niveau départemental, sur plus d'un siècle (1900 à 2016). Pour suivre les rendements de ces cultures, sur chaque département et au niveau national, les chercheurs ont développé un modèle linéaire dynamique (DLM), qui permet d'estimer la tendance d'évolution des rendements sans avoir à établir d'hypothèses fortes au préalable. À l'échelle de la France, les évolutions ainsi identifiées sont illustrées ci-dessous.

CIHEAM News's insight:

https://www.nature.com/articles/s41598-018-35351-1

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On farm analysis of the effect of the preceding crop on N uptake and grain yield of durum wheat in Mediterranean conditions

Published online on 5 September 2018.

One of the challenges of eco-efficient agriculture is the development of operational farming practices to increase the level of agricultural production, maximize the efficiency of resource use and reduce environmental impacts. Based on the efficiency frontier concept and the decomposition of resource use efficiency, we used a three-quadrant framework allowing to carry a functional analysis of the cropping system. Using a data envelope approach, we established boundary curves which represent the maximum achievable performances (yield, N uptake) when N is the only limiting factor. This framework has been first implemented and tested using published data from 112 agronomic situations of rainfed durum wheat (Triticum durum Desf.) in experimental fields in northern Syria and then further applied on a data set of 245 agronomic situations of durum wheat in farmers’ fields in two grain-producing regions of Tunisia. The results demonstrated the impact of preceding crops: durum wheat following legumes or vegetable showed a higher potential for N uptake but with only a minor effect on its conversion into grains. This positive effect of diversified rotation on potential N uptake by durum wheat is partly of-set by increased N uptake gaps in farmer’s fields indicating a higher effect of other limiting factors.

CIHEAM News's insight:

To download the publication, click here https://doi.org/10.1080/03650340.2018.1514111

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Difficult start for recently planted EU grains crops

Difficult start for recently planted EU grains crops | MED-Amin network | Scoop.it

by CRM AgriCommodities, 24/10/2018

Weeks of dry, hot weather have resulted in reduced wheat output in key producing/exporting regions in 2018 including Europe, the Black Sea, Australia and Canada. Although the full extent in Australia is still unknown, the final production figure will be highly likely to be lower than the current USDA’s 18.5MMT estimate. It implies that the cushion provided by record large stocks in 2017/18 has eroded, leaving little room for production accidents next year, even more so when coupled with supportive maize/barley fundamentals.

Although we have to remember that wheat is a weed and yields are made in May/June across the Northern hemisphere, the start of the campaign for the 2019 harvest is far from ideal. As per the map below, the drought in Europe and the Black Sea is ongoing and a widespread lack of moisture is evident across most of the continent. As such, the European Commission has warned in its October MARS Crop Monitoring bulletin (full report click here) that  warmer and substantially dryer-than-usual weather conditions in large parts of Europe hampered the sowing and emergence of winter crops’. However, there is still time for the crops to be drilled in Western Europe and some scattered showers are forecast in parts of southern Russia but France, the largest EU wheat producer, will remain dry for at least another week.

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