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Articles by Alexandru MOISUC
Total Records ( 3 ) for Alexandru MOISUC
  Monica HARMANESCU , Alexandru MOISUC , Veronica SARATEANU , Aurica BOROZAN and Iosif GERGEN
  The aim of this study was to perform a NIR calibration model for crude protein prediction of forages harvested in June 2009 from hill permanent grassland (Gradinari, Caras-Severin District) organized in ten experimental trials fertilized organic, mineral, and organo-mineral. The soil was Calcic Luvisol and the annual average temperature around 10.4°C. The floristic composition was determined gravimetrically. From Poaceae were present Festuca rupicola and Calamagrostis epigejos. Fabaceae family was represented by Trifolium repens and Lathyrus pratensis. From other botanical family: Rosa canina, Filipendula vulgaris, Galium verum and Inula britanica. Like input data was used the results for this parameter by Kjeldahl chemical method and the reflectance values from NIR spectra for analysed samples. Partial last square (PLS) regression was selected to perform the multivariate analysis to obtain the “NIR-CP” model, implemented in Panorama program (version 3, LabCognition, 2009). The statistical parameters (R2=0.8630; RMSEC=1.2844) and the differences between references and predicted values situated in range 0.03 - 1.73 % shows that it is promising to use this calibration model to evaluate the quality of forages from grassland in this period of year.
  Florin MARIAN , Alexandru MOISUC , Luminita Cojocariu , Dacian LALESCU , Nicolae HORABLAGA , Daniel GROSZ and Irina JURMESCU
  Annual forage mixtures are forage crops consisting of forage grasses (e.g. Italian ryegrass etc.) and annual clovers (e.g. Berseem clover, Crimson clover etc.) or mixtures of spring or autumn vetch with grain cereal (e.g. oats, barley, etc.) that are known as spring or autumn mash. The goal of this paper is to find the functional dependency of the average dry matter production of the Italian ryegrass (in the 67th phenophase) and Crimson clover mixture based on their different percentage participation in order to obtain the technical optimum in two variant of fertilization (N0P0K0 and N100P50K50). For this, we studied Italian ryegrass (I.r.) and Crimson clover (C.c.), both in pure and mixed culture, in the following proportions: I.r.75%+C.c.25%, I.r.50%+C.c.50%, I.r.25%+C.c.75%. In this paper we take in consideration the average dry matter production obtained in the experimental years 2007 — 2011 that allow us to have a few conclusions on the Italian ryegrass production capacity but also about the adaptation capacity of Crimson clover in Banat plain conditions. Results show that in the fertilized variant, there is an increasing of the percentage participation of Italian ryegrass in mixtures for which the maximum of dry matter production is realized than in the case of unfertilized variant, which shows that Italian ryegrass has a better response to chemical fertilizers than Crimson clover.
  Monica HARMANESCU , Alexandru MOISUC , Veronica SARATEANU , Marinel HORABLAGA , Aurica BOROZAN , Florina RADU and Iosif GERGEN
  In a permanent grassland agro-ecosystem the floristic composition varied depending on substances flow, soil nutrients availability and climatic conditions (Rotar, 1997; Moisuc et al., 2001). On the floristic composition of forages will depended its quality and the satisfaction of nutritive necessities of animal’s, in relationship with the final quality of row matter (Ammerman et al., 1995; Church&Pond, 1988). The aim of this study was to discuss how the fertilisation influences the floristic composition of hill permanent grassland in spring. Principal Components and Classification Analysis (PC&CA) technique implemented in Statistica 6 software was used to perform the statistical interpretation.
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