Effects of sowing depth and inoculation with Pseudomonas fluorescens on the initial growth of Urochloa brizantha (syn Brachiaria brizantha ) cv. Marandú

• Autor(a) principal: MARTINS,Victória de Lima
• Data de Publicação: 2022
• Outros Autores: MORAES,Lorena Maués, COSTA,Sidney Daniel Araújo da, LAGE FILHO,Nauara Moura, SILVA,Gisele Barata da, DOMINGUES,Felipe Nogueira, FATURI,Cristian, RÊGO,Aníbal Coutinho do, Da SILVA,Thiago Carvalho
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Saúde e Produção Animal
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-99402022000100203
• topic: germination; pasture; plant growth; rhizobacteria; sustainability

ABSTRACT The aim of the present study was to evaluate the effects of sowing depth and inoculation with Pseudomonas fluorescens on germination, emergence, shoot and root growth of Urochloa brizantha . A completely randomized design was used, in a 6 × 2 factorial arrangement, with 12 repetitions. The following sowing depths (SD) were evaluated: 0, 1, 2, 3, 6 and 12 cm; and the seed inoculation with P . fluorescens (I): with and without. Evaluations were carried out 25 days after plant emergence. No effects of the PS × I or I interaction were observed for all variables evaluated (P> 0.05). The germination and emergence percentages decreased linearly (P <0.05) as the SD increased. No plant emergence was observed at and at 12 cm depth. The morphometric characteristics of the plants (height, number of leaves, length of root and leaf blade width) decreased linearly with the increase of SD (P <0.05). Dry matter production of the aerial part and root were not affected by SD (P> 0.05). However, an effect was observed on the shoot:root ratio, where plants sown more superficially had a greater relationship. The inoculation with Pseudomonas fluorescens in the seed, has no effect on the initial growth of Marandu grass. On the other hand, greater sowing depths affects negatively the initial growth.