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2020, vol. 36, iss. 1, pp. 101-113
Assessment of yield, quality and nitrogen index of Agrostietum capillaris grassland as affected by fertilizations
aUniversity of Belgrade, Faculty of Agriculture
bInstitute for Animal Husbandry, Belgrade-Zemun
cInstitute for Plant Protection and Environment, Belgrade
dInstitute for Forage Crops, Kruševac
Research was financed by the Ministry of Education, Science and Technological Development of Republic of Serbia

Keywords: Agrostietum capillaris; fertilization; nitrogen indices; quality; yield
Managing N, P and K inputs in semi-natural meadow production systems is important for achieving maximum yields in livestock farming. The objective of the present study was to estimate the effect of different NPK levels (N0P0K0, N50P50K50, N100P50K50, N100P100K100, N150P100K100 and N200P150K150 kg ha-1 yr-1 ) on the yield, quality and nitrogen nutrition index (NNI) in a grassland community of Agrostietum capillaris (semi-natural meadow) in western Serbia. The study was conducted during the seasons of 2005-2008. The values of the investigated parameters, except for the unit N uptake, were the highest in 2004/2005 due to favorable climate conditions. The levels of nitrogen significantly increased all of the studied parameters compared to the control treatment, except for unit N uptake. Mineral fertilizers at N200P150K150 provided the highest green forage yield (25.12 t ha-1 ), dry matter yield (8.12 t ha-1 ), crude protein yield (876.3 kg ha-1 ), nitrogen uptake (140.2 kg ha-1 ) and nitrogen nutrition index (70.2%), and the lowest unit N uptake (0.0022 kg N kg DMY-1 ). The use of mineral fertilizers increased green forage yield, dry matter yield and crude protein yield, increasing fertilizer from lowest to highest rate increased fresh and dry matter yield, as well as protein yield. Based on the results of the study, monitoring of nutrition indices would be necessary in order to increase productivity and economic benefits.
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article language: English
document type: Original Scientific Paper
DOI: 10.2298/BAH2001101S
published in SCIndeks: 26/07/2020
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