Effect of fertilization on yield of Arrhenatheretum elatioris-type meadow in hilly region

Abstract

The trial was carried out during 2008-2009 years on Arrhenatheretum elatioris -type meadow in the hilly mountainous region near Valjevo (altitude 450 m). The investigation included six NPK fertilizer rates (N0P0K0, N50P50K50’ N100P50K50’ N100P100K100 ’ N150P100K100 i N200P150K150 kg ha-1yr-1). Increase in N, P, K fertilization level resulted in corresponding increases in the quantity of grass dry matter, especially, increases in N rate had a favorable effect on DM yield. Maximum average dry matter yield of 7,97 t ha-1 was achieved with the highest NPK rate (200:150:150 kg ha-1). The increase was 3,82 t ha-1 or 1,92-fold more compared with the control.

Ogled je izveden tokom jedne godine (2008 - 2009) na livadi tipa Arrhenatheretum elatioris u zapadnoj Srbiji (okolina Valjeva, nadmorska visina 450 mnv). Istraživanje je ukJjučilo 6 doza NPK đubriva - N0P0K0, N50P50K50> N100P50K50> N100P100K100: N150P100K100 i N200P150K150 kg ha-1 po godini. Povećanje količine N, P i K đubriva je vodilo u odgovarajuće povećanje prinosa suve materije krme, posebno je povećan prinos SM sa većim dozama N. Maksimalni prosečan prinos suve mase od 7,97 t ha-1 je ostvaren sa najvećom dozom NPK (N200P150K150kg ha-1 po godini) Povećanje je bilo 3,82 t ha-1 ili 1,92 puta više u poređenju sa kontrolom.