Abstracto
- Water consumption of forage species with the water footprint and production functions to water for crops of forage oats (Avena sativa L.) and ryegrass (Lolium perenne) was determined, taking into account the evaluation of the energy in the atmosphere in the region. Moisture gradient as Hanks et al., (1976) was generated, to obtain the answers. It took just 15 experiments to generate water consumption, water footprint, biomass production and water productivity standard (WP*). New research on water use, Steduto et al., (2007) implemented by the model AquaCrop (FAO) for the determination of biomass and agricultural production from water in herbaceous species were considered. The work was developed in the C. I. Tibaitatá, Corpoica (Colombia) (4°42¿N, 74° 12¿W), Bogotá, 2543 meters. To forage oats production function that defines second-order its water footprint variably with an optimum of 390 mm for a production of 22 t.ha-1 and WP* of 18.97 g.m-2 was found, while ryegrass that a line with a peak of 410 mm and an output line 10 t.ha-1, reaching a WP* 18.08 gm-2 of seed and a first cut for subsequent cuts 14.66. Crop Kc curves, Kcb were obtained and Ke of their production cycles, with peaks of 1.1 Kcb for ryegrass and forage oats to 1.18.
