Hemijski sastav zrna i slame pšenice gajene pri različitim količinama NPK hraniva

The high yield and quality of wheat, besides genetics, owes to the cultivation technology, and within it a significant place is occupied by fertilization. The aim of this paper was to determine the chemical composition of grains and straw of wheat grown in different amounts of NPK nutrients on a long-term field experiment. Six fertilization treatments were selected: (i) unfertilized control variant, (ii) N100P50K50, (iii) N100P100K50, (iv) N100P100K100, (v) N100P150K50, (vi) N100P150K150. Based on the obtained results, significant influence of individual varieties of fertilization was determined on the content of the studied macroelements (N, C, P, K, Ca and Mg) in grains and straw.Visok prinos i kvalitet pšenica, osim genetike, duguje i tehnologiji gajenja, a u okviru nje značajno mesto zauzima đubrenje. Cilj ovog istraživanja bio je da se utvrdi hemijski sastav zrna i slame pšenice gajene pri različitim količinama NPK hraniva na dugoročnom poljskom eksperimentu. Odabrano je šest tretmana đubrenja: (i) kontrola (neđubrena varijanta), (ii) N100P50K50, (iii) N100P100K50, (iv) N100P100K100, (v) N100P150K50, (vi) N100P150K150. Na osnovu dobijenih rezultata, utvrđen je različit uticaj pojedinih varijanti đubrenja na sadržaj ispitivanih makroelemenata (N, C, P, K, Ca, Mg) u zrnu i slami

Uticaj dugogodišnjeg izostavljanja hraniva na komponente prinosa i prinos ozime pšenice

In a long-term field experiment carried out at the Institute of Field and Vegetable Crops in Novi Sad examined the effect of eight fertilization treatments with different quantities and ratios of N, P2O5 i K2O on the yield components and yield of winter wheat cultivar NS Ilina. Long-term omission of certain nutrients has significantly affected all yield components and grain yield. At all analyzed traits, the highest values were obtained at fertilizing with all three nutrients and at least on variants with single application of only phosphorus or potassium, as well as on a double variant without use of nitrogen. The largest influence on all analyzed traits had nitrogen fertilization.Na dugotrajnom poljskom ogledu izvedenom na Institutu za Ratarstvo i povrtarstvo Novi Sad, ispitivan je efekat osam varijanti đubrenja različitim količinama i odnosima N, P2O5 i K2O na komponente prinosa i prinos ozime sorte pšenice NS Ilina. Dugogodišnje izostavljanje pojedinih hraniva pri đubrenju značajno se odrazilo na komponente prinosa i prinos zrna. Kod svih analiziranih svojstava najveće vrednosti dobijane su pri đubrenju sa sva tri hraniva, a najmanje na varijantama sa pojedinačnom primenom fosfora ili kalijuma (P100 i K100), kao i na dvojnoj varijanti bez primene azota (P100K100). Najveći uticaj na sve analizirane osobine imalo je đubrenje azotom