Resumen

PLANA, R et al. Efecto de dos inoculantes micorrízicos arbusculares (base líquida y sólida) en el cultivo del trigo duro (Triticum durum). cultrop [online]. 2008, vol.29, n.4, pp.35-40. ISSN 0258-5936.

A field research was conducted at the National Institute of Agricultural Sciences (INCA), with the objective of testing the effectiveness of two mycorrhizal inoculants, LicoMic® and EcoMic®, compared to the standard fertilization dose as well as a control without biofertilizers or mineral fertilization in hard wheat on a Rhodic Nitisol soil. The mycorrhizal variables: % colonization, % visual density, endophyte weight (mg.g1), total (glomalin) glycoprotein (mg.g-1 soil) and leaf analysis (% N, P and K) were performed, besides yield (t.ha-1) and its components: grain number.spike-1, spike number.m-2 and 1000-grain weight (g). The experimental work was developed on a randomized block two-way classification design with five treatments: 1. absolute control; 2. LicoMic®-recovered seed+50 % N; 3. LicoMic®-sprayed seed+50 kg.ha-1 N; 4. Production control (100 kg.ha-1 N, 54 kg.ha-1 P and 70 kg.ha-1 K); 5. EcoMic®+50 kg.ha-1 N. Results proved the positive action of biofertilizers on mycorrhizal variables, standing out LicoMic®. On the other hand, wheat crop showed an adequate nutritional level on N, P and K macroelement leaf analyses. Yield and its components achieved better results when applying liquid and solid mycorrhizal inoculants followed by mineral fertilization.

Palabras clave : inoculation; arbuscular mycorrhizae; NPK fertilizers; hard wheat.