Abstract
Adenanthera pavonina L., a species that produces great quantities of viable seeds, is widely used in the reclamation of degraded areas. The aim was to study the effect of different substrates on the emergence and initial growth of seedlings of A. pavonina. The experiment was carried out at the Centre for Agrarian Science of the Federal University of Paraiba, in Areia, Pariba, Brazil. The experimental design was completely randomised (CRD) with the treatments composed of 14 substrates: sand, compost, fine vermiculite, sawdust, carbonised rice hull, sand + compost in a 1:1 ratio, sand + sawdust in a 1:1 ratio, sand + cured cattle manure in a 1:1 ratio, compost + sawdust in a 1:1 ratio, compost + cattle manure in a 1:1 ratio, fine vermiculite and sand in a 1:1 ratio, fine vermiculite + sawdust in a 1:1 ratio, fine vermiculite + compost in a 1:1 ratio, and fine vermiculite + cured cattle manure in a 1:1 ratio, in four replications of 25 seeds. The following were evaluated: emergence, first count, speed of emergence index, and length and dry weight of the roots and shoots. Given the results, it was found that the sand, compost and fine vermiculite substrates, as well as the mixtures of sand + compost, compost + sawdust and fine vermiculite + sawdust in a 1:1 ratio are the most efficient for promoting the emergence and initial growth of seedlings of A. pavonina.
Highlights
Adenanthera pavonina L., a species that produces great quantities of viable seeds, is widely used in the reclamation of degraded areas
Já os melhores desempenhos germinativos em sementes de tamboril (Enterolobium contortisiliquum Vell.) foram obtidos nos substratos solo + esterco bovino 1:1 e solo + casca de arroz carbonizada 1:1 (ARAÚJO; PAIVA SOBRINHO, 2011)
Os substratos areia (77%), terra vegetal (90%), vermiculita fina (78%), areia + terra vegetal 1:1 (87%), terra vegetal + pó de madeira 1:1 (80%), vermiculita fina + pó de madeira 1:1 (84%) proporcionaram as maiores porcentagens de emergência, não diferindo estatisticamente entre si, enquanto que a casca de arroz e a mistura vermiculita fina + terra vegetal 1:1 foram prejudiciais atingindo 35 e 32%, respectivamente
Summary
Crescimento inicial de plântulas de Adenanthera pavonina L. em função de diferentes substratos. Objetivou-se estudar o efeito de diferentes substratos na emergência e crescimento inicial de plântulas de A. pavonina. Constatou-se que os substratos areia, terra vegetal e vermiculita fina, além das misturas areia + terra vegetal, terra vegetal + pó de madeira e vermiculita fina + pó de madeira na proporção 1:1, são os mais eficientes para promover a emergência e o crescimento inicial de plântulas de A. pavonina. O uso de substratos tem sido verificado em algumas espécies florestais como em sementes de canafístula (Peltophorum dubium Spreng) sendo o substrato areia + vermiculita 3:1 o mais eficiente para a porcentagem de emergência das plântulas (ALVES et al, 2011). Diante da carência de informações sobre as sementes de espécies florestais, objetivou-se identificar o substrato que proporcione a melhor emergência e crescimento inicial de plântulas de A. pavonina L
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
