Through behavior analysis of three species of cotton in pedoclimatic conditions of Timisoara, it was made determination through biometrical measures under fertilization influence concerning the quantity of raw cotton/plant, the average weight of fibers/plant and seeds/plant weight. The three species of cotton taken in study were: Marismas and Coko from Greece and Canada, North America provenance. Investigations developed during the period 2008-2010. Analysis was made through evolution maintenance and monitoring in vegetation of experimental factors and its entire experience, and also pedoclimatic factors monitoring during the vegetation period. During vegetation period, phonological observations were made: emergence, growing, plant development (apparition of the floral buds, blooming, fecundation, fruitification formation, capsules development evolution, capsules maturity). It was followed the elements calculation of variant rows obtained through biometrical measures made in the field and laboratory. Results interpretation obtained after results calculation obtained from the accounting was made through variation analysis method and of answer curves. Bifactorial experience was placed in the field after subdivided parcels method. Experimental factors established were: factor A- agrofield (A1-N0P0K0, A2- N30P30K30, A3- N60P30K30, A4- N90P60K60, A5- N120P60K60, A6- N30P30K30 plus foliar fertilization); factor B- species (b1- Marismas- Greece, b2- American provenance, b3- Coko- Greece). Positive evolution of characters taken in study registered to all the three species of cotton on agrofield A4- N90P60K60, when a dose of 90 kg/area azoth applied on a field of phosphorus and potassium base in doses of 60 kg/area every one, face to testifier variant A1- N0P0K0 (NPK dose applied to germinal layer preparation under complex chemicals forms of type 15:15:15). The weather conditions of year 2009 determined low productions (raw cotton, fibers and seeds) to all the cotton species face to the ones of 2008, the entrance in vegetation of plants with a delay of approximate of 11 days, it was the dominant factor. Investigation brought a data base of valorous reference about cotton cropping in Western of Romania.

cotton, agrofield, quantity, weight

Presentation: oral