MOVILIZACIÓN DE CARBOHIDRATOS TOTALES Y CONTENIDO DE PROTEÍNA BRUTA EN CULTIVO DE Adesmia bicolor (Poir.) DC. BAJO FERTILIZACIÓN CON FÓSFORO

GORJON J; FITZIMONS D; PANZITTA M; PEREZ VERONICA; MALPASSI R; BIANCO L; BASCONSUELO S; NOVAIRA A

Chilean Journal of Agricultural & Animal Sciences

Universidad de Concepcion

Año: 2022

In the arid-semi-arid central region of Argentina, biomass availability from natural grasslands in the period of low temperatures is scarce, and therefore achieving a higher production of winter-growing forage species is important. One of these species is Adesmia bicolor (Poir.) DC., a perennial herbaceous legume with an indefinite cycle and clonal growth, which favors its persistence under intensive grazing and high capacity to fix nitrogen (N). There is little information about the behavior of this crop under fertilization. Therefore, the objective of this work was to evaluate biomass production, crude protein content and total carbohydrate mobilization of A. bicolor under phosphorus fertilization. The experiment was carried out in a plot with an already established A. bicolor crop. A randomized complete block design with three replicates was used. The treatments consisted of three doses of liquid phosphate fertilizer: Treatment I: 0 kg ha-1 (control); Treatment II: 50 kg ha-1, and Treatment III: 100 kg ha-1. Six samples were collected every 60 days, and aboveground/ belowground biomass, crude protein and total carbohydrate content were determined. The results showed that Treatment II (50 kg ha-1) recorded the highest level of biomass production of all the treatments, whereas the different fertilizer doses did not affect crude protein content of aboveground/belowground biomass or carbohydrate mobilization patterns