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BIBTEX RIS

SALT STRESS AND AMBIENCE ON THE PRODUCTION OF WATERMELON SEEDLINGS

2020; UNIVERSIDADE FEDERAL RURAL DO SEMI-ARIDO; Volume: 33; Issue: 2 Linguagem: Inglês

10.1590/1983-21252020v33n224rc

ISSN

1983-2125

Autores

Francisco Barroso da Silva, Geocleber Gomes de Sousa, José Thomas Machado de Sousa, Carla Ingryd Nojosa Lessa, Fred Denílson Barbosa da Silva,

Tópico(s)

Plant tissue culture and regeneration

Resumo

ABSTRACT The objective of this study was to evaluate the production of watermelon seedlings irrigated with saline waters and cultivated in different types of environments and substrates. The experimental design was completely randomized with split-split plots, in which the plot corresponded to two growing environments (EN1 = full sun and EN2 = 50% shade black net), the subplot to two types of irrigation water (IW1 = 0.8 and IW2 = 2.5 dS m-1) and the sub-subplot to four types of substrates (SB1 = vermiculite + coconut fiber, SB2 = manure + soil, SB3 = carbonized rice husk + soil, SB4 = biochar + soil), with four replicates of twenty-five seeds. The variables analyzed were: emergence percentage (EP), emergence speed index (ESI), mean time of emergence (MTE), number of leaves (NL), stem diameter (SD), seedling height (SH) and root length (RL), shoot dry mass (SDM), root dry mass (RDM) and total dry mass (TDM). The EN2 treatment provided better conditions for emergence and initial growth, and EN1 was also favorable to the emergence and initial growth of watermelon seedlings, when the substrates SB1 and SB2 were used.

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