1 Chacra Experimental Integrada Barrow (MAIBA—INTA), National Scientific and Technical Research Council, Tres Arroyos, Argentina, 2 Institute of Plant Physiology (INFIVE), National Scientific and Technical Research Council, La Plata, Argentina, 3 Chacra Experimental Integrada Barrow (MAIBA—INTA), Ministry of Agro-Industry and National Institute of Agricultural Technology, Tres Arroyos, Argentin...

OBJECTIVE The study aimed to assess the N use efficiency (NUE) of pig slurry (in comparison with chemical fertilizer) for each regrowth yield and annual herbage production and their nutritive value. METHODS Consecutive field experiments were separately performed using a single application with a full dose of N (200 kg N/ha) in 2014 and by four split applications in 2015 in different sites. Th...

Experiments with intact plants of Lolium perenne previously grown with (14)NO(3) (-) revealed significant efflux of this isotopic species when the plants were transferred to solutions of highly enriched (15)NO(3) (-). The exuded (14)NO(3) (-) was subsequently reabsorbed when the ambient solutions were not replaced. When they were frequently replaced, continual efflux of the (14)NO(3) (-) was ob...

abstract turf grass as a main grown cover plant has a unique place in green space planning. in order to study the effect of hydrogel and paclobutrazol on water requirement of turfgrasse (lolium perenne l. barbal) a factorial experiment based on a brcd with 3 replication was conducted in the summer of 2010 in mashhad. the factors under study were 4 levels of hydrogel (0, 3, 6, 9 gr/kg soil), 3 l...

Global meat and milk production depends to a large extent on grazed pastures, with Lolium perenne being the major forage grass in temperate regions. Defoliation and subsequent regrowth of leaf blades is a major and essential event with respect to L. perenne growth and productivity. Following defoliation, carbohydrates (mainly fructans and sucrose) have to be mobilized from heterotrophic tissues...