English translation: adventitious growth due to the exceptional(ly high?) rainfall
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12:27 Jun 11, 2011
French to English translations [PRO] Agriculture / Production of biofuel
French term or phrase:adventices dus à la pluviométrie exceptionnelle
A crop of miscanthus grass turned out not to perform as guaranteed (only half of it was growing properly).
When a team of agriculturalists inspected it 3 months after planing it they found
présence de très nombreux adventices dus à la pluviométrie exceptionnelle de l'été 2007
Explanation: Initially not sure if your text is referring to adventitous roots or adventitious buds:
ADVENTITIOUS BUDS arise at sites other than the terminal or axillary position. They may develop from roots, a stem internode, the edge of a leaf blade, or callus tissue at the cut end of a stem or root. ADVENTITIOUS BUDS ALLOW STEM, LEAF, AND ROOT CUTTINGS TO DEVELOP INTO ENTIRELY NEW PLANTS. http://extension.oregonstate.edu/mg/botany/buds.html
• Adventitious roots arise out-of-sequence from the more usual root formation of branches of a primary root, and instead originate from the stem, branches, leaves, or old woody roots. They commonly occur in monocots and pteridophytes, but also in many dicots, such as clover (Trifolium), ivy (Hedera), strawberry (Fragaria) and willow (Salix). Most aerial roots and stilt roots are adventitious. In some conifers adventitious roots can form the largest part of the root system. http://en.wikipedia.org/wiki/Root
However, reference to rainfall probably suggests it is roots we are talking about, though I'm not sure I understand the problem, i.e. why would the propagation of adventitious roots prevent growth of the plant.
However (bis), reading between the following lines :
Both seminal and adventitious roots then produce lateral roots. Subsequently, any of these initial laterals may produce further laterals, and so on, for few or many further orders of branching (see “Turfgrass Roots,” page G6). These roots remain active for long periods, and some of them support the plant during the entire course of its life. Generally FOR THE GRASS FAMILY, CROWN ROOTS (ADVENTITIOUS ROOTS) BEGIN DEVELOPMENT BY THE THREE-LEAF STAGE, and all root support to the plant prior to this stage depends on the seminal root system. Also, during different stages of plant development, each of the two groups of roots supports different allotments of the shoots. Seminal roots support mainly the primary shoot, although some support is also given to the tillers. Adventitious roots, however, are connected only with one or with very few of their mother tillers. SEMINAL ROOTS ARE MORE IMPORTANT FOR THE SURVIVAL OF WHOLE PLANTS THAN ARE ADVENTITIOUS ROOTS. http://grounds-mag.com/mag/grounds_maintenance_grass_roots_2...
I suspect that it may be that the plant puts all its energy into producing roots, to the detriment of above-ground growth, and that should there subsequently be a dearth of water or other nutrients, the adventitious roots are largely useless to the plant which has sprouted them (although they may be of use in creating new plants to ensure the survival of the species).
Unless you have more information on the subject, it may be wise to say "adventitious growth" and let the expert reader put two and two together.
Presumably, as the question refers to a "crop" of miscanthus grass, its purpose is for biomass, not as an ornamental miscanthus grass ...
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Answers
49 mins confidence: peer agreement (net): +1
weeds due to outstanding rainfall
Explanation: Not sure what is causing a problem in the sentence. Hope this helps.
Leslie Marcus France Local time: 17:58 Works in field Native speaker of: English PRO pts in category: 4
Notes to answerer
Asker: Thanks! the problem was that the usually reliable Collins FR-EN only gives this word as an adjective meaning "self-propagating" and doesn't even mention the noun!
adventitious growth due to the exceptional(ly high?) rainfall
Explanation: Initially not sure if your text is referring to adventitous roots or adventitious buds:
ADVENTITIOUS BUDS arise at sites other than the terminal or axillary position. They may develop from roots, a stem internode, the edge of a leaf blade, or callus tissue at the cut end of a stem or root. ADVENTITIOUS BUDS ALLOW STEM, LEAF, AND ROOT CUTTINGS TO DEVELOP INTO ENTIRELY NEW PLANTS. http://extension.oregonstate.edu/mg/botany/buds.html
• Adventitious roots arise out-of-sequence from the more usual root formation of branches of a primary root, and instead originate from the stem, branches, leaves, or old woody roots. They commonly occur in monocots and pteridophytes, but also in many dicots, such as clover (Trifolium), ivy (Hedera), strawberry (Fragaria) and willow (Salix). Most aerial roots and stilt roots are adventitious. In some conifers adventitious roots can form the largest part of the root system. http://en.wikipedia.org/wiki/Root
However, reference to rainfall probably suggests it is roots we are talking about, though I'm not sure I understand the problem, i.e. why would the propagation of adventitious roots prevent growth of the plant.
However (bis), reading between the following lines :
Both seminal and adventitious roots then produce lateral roots. Subsequently, any of these initial laterals may produce further laterals, and so on, for few or many further orders of branching (see “Turfgrass Roots,” page G6). These roots remain active for long periods, and some of them support the plant during the entire course of its life. Generally FOR THE GRASS FAMILY, CROWN ROOTS (ADVENTITIOUS ROOTS) BEGIN DEVELOPMENT BY THE THREE-LEAF STAGE, and all root support to the plant prior to this stage depends on the seminal root system. Also, during different stages of plant development, each of the two groups of roots supports different allotments of the shoots. Seminal roots support mainly the primary shoot, although some support is also given to the tillers. Adventitious roots, however, are connected only with one or with very few of their mother tillers. SEMINAL ROOTS ARE MORE IMPORTANT FOR THE SURVIVAL OF WHOLE PLANTS THAN ARE ADVENTITIOUS ROOTS. http://grounds-mag.com/mag/grounds_maintenance_grass_roots_2...
I suspect that it may be that the plant puts all its energy into producing roots, to the detriment of above-ground growth, and that should there subsequently be a dearth of water or other nutrients, the adventitious roots are largely useless to the plant which has sprouted them (although they may be of use in creating new plants to ensure the survival of the species).
Unless you have more information on the subject, it may be wise to say "adventitious growth" and let the expert reader put two and two together.
xxxBourth Local time: 17:58 Native speaker of: English PRO pts in category: 160
Grading comment
Thanks
Notes to answerer
Asker: Thanks! Very helpful. Presumably the elephants only feed on the surface
The translation workplace 
peer agreement (net): +1
