OLIVEIRA, Fernanda Andrade de.
Resumo:
Salinity is a major cause of yield loss of crops in arid and semi-arid regions, requiring
the adoption of management strategies that facilitate the cultivation in these regions,
the use of crops tolerant species in this region. The objective was to study the
emergence, early growth and tolerance of pepper species subJected to irrigation with
saline water. The experiment was conducted in a protected environment
(greenhouse) of the Center for Science and Technology Agrifood - CCTA Federal
University of Campina Grande - UFCG, located in the municipality of Pombas,
Paraíba, PB. The treatments were formed from a factorial 5 x 3, using four replicates
and ülve planta per plot, totaling 300 experimental planta, a comptetely randomized
experimental design, for ave leveis of irrigation water salinity (0, 6; 1 .2; 1 .81 2.4 and
3.0 dS m-l) and three pepper species (EI -- Caos/cum annt/m ("Doce Comprida')l
E2- Caos/cum /}ufescens ("Malagueta"); E3- Caos/cum ch/nesse ("De Bico'». The
pepper plants were cultivated in trays 30 ballots capacity of O.l dm3 substrate during
the first 30 days after sowing. During this period, the plants were monitored for the
emergence, early growth, the accumulation of dry matter and through the tolerance
to salinity. The increase in water salinity reduces the emergence, growth and
biomass accumulation of pepper plants. The peppers Sweet Long, "Malagueta" and
"De Bico" tolerate ECw up to 1.78, 2.71 and 1.55 dS m'l, respectively. The pepper
"Malagueta" is the most tolerant to salt stress, and "De Bico", is the most sensitive to
salt stress among the species studied.
