Agave angustifolia bulbil growth in different substrates, with doses of fertigation and inoculation with Azospirillum brasilense/Crescimento de bulbos de Agave angustifolia em differentes substratos, com doses de fertirrigacao e inoculacao com Azospirillum brasilense

• Published in: Ciência rural 2023-03, Vol.53 (3), p.1
• Main Authors: Jarquin-Rosales, Domitila, Enriquez-del Valle, Jose Raymundo, Alpuche-Osorno, Juan Jose, Rodriguez-O, Campos-Angeles, Gisela Virginia, Morales, Isidro
• Format: Article
• Language: English
• ISSN: 0103-8478
• DOI: 10.1590/0103-8478cr20210863

There is little information about the production of agave plants in the nursery, so this research assessed the growth in the nursery of Agave angustifolia plants originating from inflorescence bulbils, subjected to different substrates, fertigation doses, and inoculation with Azospirillum brasilense. The bulbils were established for two months in a 50% peat-50% perlite substrate. One hundred and eighty plants were individually transferred to 3.8 [dm.sup.3] pots for evaluation in an experiment with three factors: 1) type of irrigation: 1.1) water, or 1.2) fertigation with Steiner's nutrient solution (NS), NS-50%, or 1.3) NS-100%; 2) inoculation with Azospirillum brasilense, 2.1) inoculated plants, 2.2) non-inoculated plants; 3) substrate, mixtures of bovine manure (BM) + sand (S) in different proportions, Mix1: 75% BM + 25% S; Mix2: 25% BM + 75% S; Mix3: 50% BM + 50% S. Morphological characteristics were quantified for one year. The largest plants were those that were in substrates with 50% BM, and were fertirrigated with NS-100% and inoculated with Azospirillum brasiliense. The smallest plants were those established a in a substrate with the lowest manure content, irrigated with only water and without inoculation, which was respectively 71.6 and 54.10 cm high, 21 and 15.6 leaves, 76.6 and 62.2 mm in stem diameter, 84.4 and 59.8 cm in rosette diameter. Key words: agave, Azospirillum brasilense, fertigation, growth, substrate mixtures. Existem poucas informacoes sobre a producao de agave em viveiro, portanto o objetivo deste trabalho foi avaliar o crescimento em viveiro de Agave angustifolia provenientes de bulbilhos de inflorescencia, submetidos a diferentes substratos, doses de fertirrigacao e inoculacao com Azospirillum brasilense. Os bulbilhos foram estabelecidos por dois meses em substrato 50% turfa-50% perlita. Cento e oitenta plantas foram transferidas individualmente para vasos de 3,8 dm3 para avaliacao em um experimento com tres fatores: 1) tipo de irrigacao: 1.1) Agua ou 1.2) fertirrigacao com solucao nutritiva de Steiner (NS), NS-50% ou 1.3 ) NS-100%; 2) inoculacao com Azospirillum brasilense, 2.1) plantas inoculadas, 2.2) plantas nao inoculadas; 3) substrato, misturas de esterco bovino (BM) + areia (S) em diferentes proporcoes, Mix1: 75% BM + 25% S; Mix2: 25% BM + 75% S; Mix3: 50% BM + 50% S. As caracteristicas morfologicas foram quantificadas por um ano. As maiores plantas foram aquelas que estavam em substrato com 50% de BM, foram fertirrigadas