RESEARCH REGARDING THE INFLUENCE OF DIFFERENT FUNGICIDE TREATMENTS UPON THE FOLIAR SUFACE INTEX (LAI) TO THE OILSEED RAPE PUBLISHED

Daniel GROSZ, Valeriu TABARA, Dacian LALESCU
The paper aims to identify the main fungal substances used to combat canola diseases and the influence of those on metabolism, generative processes, physiological actions that bring production increases of canola. There have been realized studies regarding fungal active substances, the moment of applying and the way that these influence the productions nature and the percentage of oil in canola seeds. Were carried out researches in the field, being realized biometric measurements, index of leaf surface measurements (LAI - Leaf Area Index) with device LI 3000C Portable Area Meter, laboratory tests regarding (MMB (g), humidity (%) and the percentage of oil (were realized with FOSS Infratec device 124). In the experimental field were made test towards the plants height variation, the ramification degree variation, the variation of the siliqua on plant number, the variation of the seeds in siliqua number, the seeds production. The observations realised in the experimental field brought at surface an uniform bloom inside of the variants in which have been applicated fungual treatments with strobilurine, plants with a present foliage and on the inferior levels of the plant that participate at the photosynthesis process through the increase of the plant photosynthetic capacity.The treatments with strobilurin were applied in stage 51-59 BBCH, being observed increases of the leafs surface resulting a bigger photosynthetic capacity, what does influence directly the process of assimilation and grains filling. The researches have been realised in the West side of Romania, Timis county, through experiences in strips established in the field, being realised observations at level of plant with three plant protection. The calculation of the harvest data were made according to the arrangement method of the experiments in the field, and the results of the tests from vegetation regarding the plants height, the ramification degree and the number of siliqua/plant were calculated through the analyse of the statistic variations line. From seeds production point of view were obtained production increases on average with 973 kg/he in the variants in that were used two fungicides in plant protection, one with strobilurin, compared with untreated variant. That confirms the direct influence of those substances on metabolism, vegetative and generative processes of canola.
strobilurins, Leaf Area Index, production, canola.
Presentation: oral

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