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2018, vol. 23, br. 45, str. 101-110
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Uticaj različite doze i načina primene NPK-đubriva na kvalitet krtola krompira
Effect of different rates and methods of application of NPK-fertilizers on the quality of potato tubers
aUniverzitet u Kragujevcu, Agronomski fakultet, Čačak bInstitut za zemljište, Beograd
e-adresa: ljiljabr@kg.ac.rs
Projekat: Novi koncept oplemenjivanja sorti i hibrida povrća namenjenih održivim sistemima gajenja uz primenu biotehnoloških metoda (MPNTR - 31059)
Sažetak
U cilju ispitivanja uticaja različitih doza i načina primene NPK-đubriva na kvalitet krtola krompira sorte Karera izvedena su ispitivanja tokom vegetacione sezone krompira 2015. godine na zemljištu tipa luvisol, u ataru sela Bzovik (planinski masiv Radočelo, opština Kraljevo). Ogled je postavljen u sledećim varijantama: 1. T1 - Kontrola (neđubreno); 2. T2 - NPK 16:16:16 u količini 1500 kg/ha, primenjeno u brazde za vreme sadnje; 3. T3 - NPK 16:16:16 u količini 1200 kg/ha, primenjeno u brazde za vreme sadnje; 4. T4 - NPK 16:16:16 u količini 700 kg/ha za vreme predsetvene pripreme i 500 kg/ha u brazde za vreme sadnje. Rezultati analiza hranljive vrednosti krtola krompira ukazuju da je sadržaj svih ispitivanih elemenata bio veći u kori u odnosu na srž krtole. Najveći sadržaj svih ispitivanih elemenata utvrđen je primenom najveće doze (1500 kg/ha), dok je najmanji sadržaj hraniva, osim kod Fe, utvrđen primenom NPK-đubriva u količini 700 kg/ha predsetveno i 500 kg/ha u sadnji, pri čemu su sve vrednosti bile u okviru optimalnih količina.
Abstract
Research on the effect of different rates and methods of application of mineral NPK fertilizers on the quality of potato variety 'Carrera' was conducted on a luvisol of the Radočelo Mountain massif. Treatments included an unfertilized control, NPK 16:16:16 (1500 kg/ha) applied in-furrow at planting, NPK 16:16:16 (1200 kg/ha) applied in-furrow at planting, and NPK 16:16:16 applied at 700 kg/ha during seedbed preparation and at 500 kg/ha in-furrow at planting. Results on the nutritional value of potato tubers showed that the levels of tested nutrients were higher in the skin than in the flesh. The concentrations of tested nutrients in potato tubers were highest at the highest NPK fertilizer rate, whereas the lowest levels of all nutrients, except Fe, were determined in tubers at NPK rates of 700 kg/ha applied pre-plant and 500 kg/ha applied at planting.
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