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Proceeding of the 4 rd International Symposium“NEW RESEARCH IN BIOTECHNOLOGY” USAMV Bucharest, Romania, 2011A cumulative expression of the effect of applied production technology is thequantity of production. Relatively low yield has been gathered in the fertilized options butcompared to the average for the region they are higher, especially with wheat. Figure 2shows that compared to the non-fertilized options (in the continuation of 20 years), thefertilized plots have provided a satisfactory yield. Results from dispersion analysis forwheat show that the treatment system has no statistically significant impact on yields. Theonly statistically proven fact is the effect of fertilization (at a level of probability p
Proceeding of the 4 rd International Symposium“NEW RESEARCH IN BIOTECHNOLOGY” USAMV Bucharest, Romania, 2011Directions, which can be sought for efficient production, are mainly related to theeconomizing of production and streamlining of costs.Figure 5. Corn yields depending on the mid-line treatment4. CONCLUSIONSThis experiment determined that the application of new solutions of soil treatmentand mainly of mineral fertilization, one can achieve an increase of yield of 13.4 to 17.0% ofcrops grown. The exchange of part of the ammonium nitrate, intended for nutrition with adouble introduction of foliar fertilizer, as well as the usage of amophos as a phosphatefertilizer, increase the productiveness of crops grown on leached vertisol.A tendency of improvement of the values of some of the main physical and agrochemical parameters of soil fertility has been found.REFERENCES1. Dimitrov I., T. Mitova. (1997). Effects of soi ltreatment systems and fertilization on theproductivity of crop rotations at rainfed conditions. Crop Science, 34(9-10), 65-69.2. Dimitrov I., Borisov P. 2005. Changes in acidity of some soil types depending on the soil treatmentsystems. “Management, usage and protection of soil resources” Conference, Sofia, 219-221.3. F. Dimitrova, Borisova M. (2007). Agro chemical aspects of soil fertility at continuous mineralfertilization. Scientific reports, “Pedology – the basis of sustainable farming and environmentalprotection” International Conference, Sofia, 324-327.4. Pachev I., Y. Naydenova, I. Dimitrov (2006). Influence of soil cultivation and fertilization on yieldand digestibility of forage alfalfa. Pedology, agro chemistry and ecology, №1, 57-60.5. Dimitrov I., Koutev V., Borissov P. 2001. Changes in organic nitrogen content in soil depending ofdifferent tillage and fertilizing systems. 11 th NITROGEN WORKSHOP, INRA, Reims,France, 287-289.6. Convertini, G. at all. (1997). Comparison among soil tillage methods in southern Italy: Effects onagronomical responses and soil properties. Proceedings of 14 th ISTRO Conference, Pulawy,Poland, t. 2A, 155-158.31
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