Impact des termites dans les champs paysans de riz et de mais en savane sub-soudanienne (Booro-Borotou, Côte-d\'Ivoire)
Bibliographic record
Abstract
Les termites appartiennent au groupe des arthropodes et jouent un rôle prépondérant dans les régions tropicales et sub-tropicales. L\'objectif de la présente étude est d\'évaluer les dégâts causés par les termites dans les cultures paysannes de riz (Oryza sativa L.) et de maïs (Zea mays L.). Pour se faire, un échantillonnage préliminaire a été entrepris dans le milieu naturel (savane arbustive) en vue d\'inventorier les espèces de termites présentes dans le milieu afin de les utiliser comme témoin durant cette étude. Six espèces de termites ont été recensées dans le milieu naturel contre respectivement 7 et 4 dans les champs de riz et de maïs. Les ouvriers de termites champignonnistes (Microtermes sp, Ancistrotermes sp) et les xylophages (Amitermes sp.) ont été fréquemment rencontrés dans le système racinaire et à l\'intérieur des tiges des deux cultures et sont considérés comme responsables des dégâts. Certains termites souterrains (Microtermes sp, Ancistrotermes sp et Amitermes sp) endommagent les racines et les tiges de maïs. Ils sont par conséquent responsables de la verse des plantes après sénescence. D\'autres termites comme Pseudacanthotermes sp et Macrotermes sp construisent des placages sur les plants qu\'ils utilisent pour les attaquer. Aucun dégât n\'a été attribué aux termites humivores Cubitermes sp .Termites belong to the athropod group and play a tremendous role in tropical and sub-tropical regions. The aim of this study was to assess the damages caused by termites to the rice (Oryza sativa L) and corn (Zea mays L.) in farmer fields. To reach this goal, a preliminary sampling was undertaken from the natural environment (shrub savannah) in a view of inventorying termites species to be used in this investigation. Six species of termites were identified in the shrub savannah and 7 and 4 while were collected in the rice and corn farms, respectively. The fungus-growing worker termites (Microtermes sp, Ancistrotermes sp) and wood-feeders ones (Amitermes sp) were frequently met in the root system and in the stems of the two crops and they were identified as those responsible for damages. Some subterranean termites (Microtermes sp, Ancistrotermes sp and Amitermes sp) damage the roots and stems of corn. They are subsequently responsible for the fall of crops after senescence. Other termites such as Pseudacanthotermes sp and Macrotermes sp build up outside layers on crop that they use to infest it. No soil-feeding termite (Cubitermes sp) was held responsible for any damage. Keywords: Termites, damage, peasant, rice,corn. Sciences & Nature Vol. 5 (2) 2008: pp. 121-131
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".