COMPARATIVE STUDY BETWEEN THE OBSERVATIONS YEARS MADE ON THE SUNFLOWER CROP IN VIEW OF FAMILY BEE PROTECTION AGAINST CERTAIN POISONINGS PUBLISHEDAlin Jivan, Valeriu Tabără
The researches show to be a novelty in the field because they are a link between two areas of great interest to agriculture. They were conducted in 2006, 2007 and 2008 in the localities Bulgărus and Grabat, in Timis County. Research environment and area in which they have occurred are original to this study. Entomophilous crop pollination by bees is an important measure that enhances agro natural development (clean, without additional investment) in the production of seeds, fruits and vegetables. Analysis of the number of bees entering the hive influences the amount of brood brought up. For 2006 the range of variation in the number of bees is between 50 and 382 (variation was of 332 bees) and the amount of brood ranges between 558 and 1293 cm 2 (735 cm 2 is the variation), the increase in the number of bees entering the hive influences the amount of brood by 0.612 with a guarantee of results of 0.2% (Sig.0, 002) – the maximum allowable value is of 5%. In 2007, the range of factors examined was very different than in 2006, the amount of brood showed a variation range between 632 and 1055 cm 2 (the variation is 423 cm 2 ), the variation in the number of bees is between 47 and 117 (variation of 70 bees), the influence coefficient dropped to 0.625. The year 2008 recorded the following variation intervals of the factors’ values included in this study, the amount of brood showed a variation range is between 640 and 1040 cm 2 (variation is 400 cm 2 ) end the variation in the number of bees is between 8 and 49 (variation was of 41 bees). A negative connection has been recorded in 2008 - the correlation coefficient is -0.646, the result is a guarantee of 0.1%, ie 5% above the allowable ratio Sig. F Change of 5%, ie 10% were recorded. The purpose of this study was to determine the degree of development of bee families where pesticide treatments were made to the culture of sun-flower.
bee, pollen, brood, intoxication, observation