Resumo

MONTENEGRO-GOMEZ, Sandra Patricia; GOMEZ-POSADA, Susana  e  BARRERA-BERDUGO, Silvia Eugenia. Effect of poultry manure on Azotobacter sp., Azospirillum sp. and arbuscular mycorrhizal fungi in anion culture (A. fistulosum). Entramado [online]. 2017, vol.13, n.2, pp.250-257. ISSN 1900-3803.  https://doi.org/10.18041/entramado.2017v13n2.26232.

Poultry manure application is highly used as exclusive nutrient sources, especially N, in anion culture (A. fistulosum), However there has been detected toxicity problems by salts and heavy metals in plants. The aim of this study was to estimate the effect of fresh poultry manure and composted on Azotobacter sp., Azospirillum sp. and arbuscular mycorrhizal fungi (AMF). The treatments were performed under completely randomized design with 4 treatments and 3 replications according to fertilization requirements and soil analysis. Treatments were formed as follows: Tl-Poultry manure + Foliar liquid fertilizer quelated-14 ton.ha-1=400 grsite-1 poultry manure + complex biofertilizer of N, P and aminoacids-1 L.ha-1, T2-Composted poultry manure + Foliar liquid fertilizer quelated-14 ton.ha-1=400 grsite-1 poultry manure + complex biofertilizer of N, P and aminoacids-1 L.ha-1, T3-Chemical fertilizer: fertirrigation with complex biofertilizer 20-20-20 + minor elements (l0 grsite-1 =350 kg ha-1) and T4-Chemical fertilizer: Application in the soil with complex biofertilizer 20-20-20 + minor elements (20 kg ha-1=700 kg ha-1.). We observed that anion culture and AMF spores (91 spores by 1g soil) have a significant respond to poultry manure. Azotobacter sp. was negatively affected by poultry manure but positively influenced by composted poultry manure (l.0 xl07 CFU). We no observed a relevant respond of Azospirillum sp., although, it was more abundant than Azotobacter sp. in all treatments.

Palavras-chave : Poultry manure; compost. Azotobacter sp. and Azospirillum sp.; Arbuscular mycorrhizal fungi; Allium fistulosum.

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