This paper aims to improve the humus content of soil from Didactic Teaching Station Plantation of Timisoara to achieve higher production and better quality. Research has been conducted over a period of three years, that in 2007, 2008 and 2009. It will consider the continuation of this research, a longer period in order to offer better solutions to everyone in the area. Humus content in the soil (%) was determined by titrimetrice respectively Tiurin method. Principle of the method consists of oxidation of carbon in humus with a solution of anhydrous chromium or potassium dichromate in the presence of sulphuric acid. Production theory to determine the number of fruit per tree multiplied by the average weight of fruit. In the following years production increased, but the determination was similar, whereas the determination by weighing the harvest is affected by errors of thefts that take place every year. The research was conducted in the same direction, all for a period of three years (years 2003 to 2005), but results in this regard can be observed only after a greater number of years, as the humus content of soil is disrupted following its use by apple. Research is in its early stages, taking into account the fact that the humus content of soil is disrupted essential, especially in fruit plantations, trees where consumption is increased, hence the need for fertilization is necessary, and changes may be observed only in a longer period of time. In Romania, investigations are limited, a fact due in part to the lack of financial resources, especially in fruit growing, where the areas are quite large, and due to increased consumption of trees in nutrients, especially super intensive system. The work is original, both in terms of information it provides, as well as practical solutions that gives those interested in fertility status of soils occupied by trees. The work has great practical importance, because is giving the necessary information in terms of humus status in the land occupied by trees, and in the achievement of steady production and good quality.

fertilizers; culture system; humus content; productions

Presentation: oral