This work byProf. Derrick Moot and the Lincoln University Dryland Pastures Research Teamis licensed under aCreative Commons Attribution-NonCommercial-NoDerivatives4.0 International License. Flock Hill, 28 July 2016 Lucerne Agronomy Dr Derrick Moot Professor of Plant Science Website Handouts & presentations FAQs Direct link to Blog www.lincoln.ac.nz/dryland Experiment site Rep 1 Rep 2 Rep 3 Growth rates (2 year means) D-N 21.9 t/ha 120 I-N ) d D+N / a h I+N / 90 g k ( 15.7 t/ha e t a 60 r h 9.8 t/ha t w o 30 r G 6.3 t/ha 0 J A S O N D J F M A M J J Month Mills et al. 2006, 2009 Winter ⇒ temperature response ky ollocersit Pv M Uni Kn o: ol otnc PhLi The Nitrogen gap 30 I +N I –N ) y = 7.0 kg DM/ha/oCd a h 21.9 t/ha 20 / t ( d l e i y M 10 D 9.8 t/ha y = 3.3 kg DM/ha/oCd 0 0 1000 2000 3000 Thermal time (°Cd) Mills et al. 2006; 2009 Nitrogen deficient pasture 1000 kg N/ha Nitrogen applied in NZ 500 397 000 t ) t 0400 0 0 ' ( n300 o i t p m 200 u s n o 100 c 6 000 t N 0 Year NZ Fertiliser Association, 2015 High feeding value pastures have: • high legume content • high leaf content • low stem content • young herbage age Sheep prefer 70% legume, 30% grass h g u ggoro o GriMarlb o: Jo’ Photmpell e T ‘