Fertilizers and Environment: Proceedings of the by Excmo. Sr. D. Francisco Jambrina Sastre (auth.), Prof. Dr.

By Excmo. Sr. D. Francisco Jambrina Sastre (auth.), Prof. Dr. C. Rodriguez-Barrueco (eds.)

Food construction is still the top agricultural precedence, topic to the constraint that or not it's performed in concord with nature, or at the least with minimal environmental pollutants. the quantity of fertilizer utilized will be managed utilizing glossy program ideas, together with soil and crop administration, making certain greater financial revenue and decrease environmental price. it really is in this sort of context that the current booklet addresses the effective and rational use of mineral and natural fertilizers whereas holding environmental caliber. The booklet discusses the influence on floor and groundwaters, soils and vegetation, and adventure of nitrate leaching, denitrification, ammonia volatilization, heavy steel pollutants, agricultural and concrete waste administration, and foreign and nationwide laws.
Audience: Agronomists, environmentalists, soil and nutrients chemists, ecologists, coverage makers, and bosses within the fertilizer eager about the rage of public opinion.

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Additional resources for Fertilizers and Environment: Proceedings of the International Symposium “Fertilizers and Environment”, held in Salamanca, Spain, 26–29, September, 1994

Sample text

1977). In this case for calculating the simplified nitrogen balance usually only the fertilization (organic and mineral) and the removal with harvested yield are taken into account. The simplified nitrogen, phosphorus and potassium balances of the Hungarian agriculture between 1930 and 1992 were summarized by Kadar (1987) and Csath6 (1994). When analyzing the NPK balances of Hungarian agriculture it can be concluded that the surplus appearing in the nutrient balance sheet is a consequence of intensive fertilization.

Specific nitrogen content of the crops calculated for the selected experimental sites (Nitrogen content of I ton harvested crops together with crop aftermath) Crops N-treatrnents (kglha) Experimental sites 2 3 4 5 6 7 8 Average Winter 0 26 26 23 19 25 21 24 26 24 wheat 50 30 29 27 24 30 26 28 30 28 Maize Sunflower 150 33 30 36 28 34 35 47 30 34 33 33 40 32 37 31 250 37 39 37 0 50 150 250 24 27 29 29 18 21 24 24 20 21 22 25 21 22 23 27 29 34 38 42 26 29 32 22 23 23 23 26 28 37 32 31 29 34 23 30 0 50 150 46 49 43 60 60 63 54 57 74 78 68 68 95 96 65 53 66 80 120 67 81 59 65 54 54 54 81 111 68 72 97 97 68 83 250 59 61 Experimental sites: I.

Kompolt, 7. Putnok, 8. Mosonmagyar6var Table 2. 2 35 Table 3. 2 Table 4. 4 Experimental sites '" The nitrogen taken up by the crops of the unfertilized plots was subtracted balance is shown not only by this calculation but also in the specific nitrogen content of the differently fertilized plots (Table 1). From these results it can be concluded, that after the yearly application of 150 and 250 kg Nlha, the specific nitrogen content of the harvested yields exceeded (specially in the case of sunflower) the usual value in most experimental sites.

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