DANOS CAUSADOS PELA LARVA-ALFINETE EM MILHO EM CONDIÇÕES DE CAMPO
Bibliographic record
Abstract
RESUMO - O objetivo desse trabalho foi avaliar os danos causados por diferentes densidades larvais de Diabrotica speciosa em milho BG 7060 H em condições de campo. O experimento foi realizado na safra 2012/2013, na Embrapa Clima Temperado (S 31°49.268 e W 52°27.472). Cada parcela foi constituída de seis linhas de 5 m x 0,70 m. As plantas foram infestadas com 0, 5, 15, 30 e 40 larvas/planta. Foram avaliados, 64 dias após a infestação, o peso e o comprimento e dano em raízes e, na ocasião da colheita, a altura da planta e inserção da espiga e o rendimento. Não foi observada redução significativa do peso de raízes infestadas com larvas de D. speciosa. O comprimento das raízes foi numericamente maior quando não houve infestação larval, e a altura de plantas e a inserção da espiga não foram influenciadas pela infestação. De acordo com a escala de Iowa State 1-6, independentemente do número de larvas inoculadas às raízes, os danos foram abaixo de 2,0 (1,29 - 1,74). Pela escala de Iowa 0-3, verificou-se dano inferior a 0,75 (0,23 - 0,60). Em relação ao rendimento, de modo geral, à medida que aumentou a densidade larval, houve redução no rendimento.Palavras-chave: Diabrotica speciosa, injúrias, infestação artificial, raízes.DAMAGE CAUSED BY CORN ROOTWORM IN CORN FIELD CONDITIONSABSTRACT - The aim of this study was to evaluate the damage caused by different larval densities of Diabrotica speciosa in maize BG 7060 H under field conditions. The experiment was conducted in the field in 2012/2013, at Embrapa Clima Temperado (31°S 52°W 49,268 and 27,472). Each plot consisted of six rows 5 m x 0.70 m and the cultivar used was BG 7060 H. The plants were infested with 5, 15, 30 and 40 larvae/plant, and there was a control (no larvae). The damage, weight and length of roots were evaluated 64 days after infestation (DAI) (22/01/2013). At the harvest, plant and ear height and yield were evaluated. No significant reduction in the weight of roots infested with larvae of beetles was observed. The root length was numerically higher when there was no larval infestation. Plant and ear height was not affected by the infestation. According to Iowa State 1-6 damage scale, regardless of of the number of larvae inoculated to roots, damages were below 2.0 (1.29 to 1.74). According to scale of Iowa 0-3, there was damage less to 0.75 (0.23 to 0.60). In relation to yield, it was observed that, in general, as increased larval density, there was a reduction in yield.Keywords: Diabrotica speciosa, injuries, artificial infestation, roots.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".