WATERCRESS AND CHINESE CABBAGE IN A HYDROPONIC SYSTEM USING GROUNDWATER

ABSTRACT Groundwater with high salt concentrations is common in the semiarid region of Brazil. It often makes them inappropriate to conventional agricultural production of vegetables. Therefore, the objective of this work was to evaluate watercress and Chinese cabbage crops under a nutrient film tec...

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Bibliographic Details
Published in:Caatinga 2019-10, Vol.32 (4), p.1038-1047
Main Authors: LIRA, RAQUELE MENDES DE, SILVA, ÊNIO FARIAS DE FRANÇA E, SILVA, ALEXSANDRO OLIVEIRA DA, MEDEIROS, PEDRO RÓBINSON FERNANDES DE, SILVA, GERÔNIMO FERREIRA DA, SOARES, HAMMADY RAMALHO E
Format: Article
Language:eng ; por
Subjects:
Agricultural production
AGRICULTURE, DAIRY & ANIMAL SCIENCE
AGRONOMY
Brassica oleracea
Calcium
Calcium chloride
Calcium sulfate
Chinese cabbage
Chloride
Design of experiments
Experimental design
FISHERIES
FOOD SCIENCE & TECHNOLOGY
FORESTRY
Groundwater
Growth rate
Hydroponics
Magnesium
Magnesium chloride
Public waters
Rorippa nasturtium-aquaticum
Semi arid areas
Semiarid lands
Sodium chloride
VETERINARY SCIENCES
Watercress
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Summary:ABSTRACT Groundwater with high salt concentrations is common in the semiarid region of Brazil. It often makes them inappropriate to conventional agricultural production of vegetables. Therefore, the objective of this work was to evaluate watercress and Chinese cabbage crops under a nutrient film technique (NFT) hydroponic system using brackish groundwater. The experiment was carried out in the Poço do Boi region, in Ibimirim, Pernambuco, Brazil (8º32'15"S, 37º41'30"W, and altitude of 431 m). The treatments used were: public water (T1), calcium sulfate water (T2), magnesium chloride water S1 (T3), calcium chloride water (T4), sodium chloride water (T5), and magnesium chloride water S2 (T6). A completely randomized experimental design was used, with six treatments and four replications, totaling 24 plots for each crop. The fresh and dry shoot weights and rates of relative and absolute growths were analyzed. The different waters used affected negatively the growth and yield of the watercress and Chinese cabbage plants. The calcium chloride water was the most suitable for the watercress production. However, none of the groundwaters used could be recommended for production of Chinese cabbage. The lowest growth rates (5.88% to watercress and 0.75% to Chinese cabbage) of the fresh matter were found with the use of magnesium water. RESUMO Em grande parte do semiárido é comum à presença de águas subterrâneas que apresentam concentrações de sais, tais que, muitas vezes, as tornam inapropriadas à produção agrícola de hortaliças de maneira convencional. Assim, objetivou-se com este trabalho avaliar o comportamento das culturas do agrião e da couve chinesa em hidroponia NFT (Nutrient Film Technique), submetidas à utilização de águas salobras subterrâneas. O experimento foi realizado no município Poço do Boi em Ibimirim-PE (8º32'15" de latitude Sul, 37º41'30" de longitude Oeste, e a uma altitude 431 m. Os tratamentos foram designados como: T1 - água de abastecimento; T2 - água sulfatada cálcica; T3 - água cloretada magnesiana S1; T4 - água cloretada cálcica; T5 - água cloretada sódica e T6 - água cloretada magnesiana S2. O delineamento experimental foi inteiramente casualizados, com seis tratamentos e quatro repetições, totalizando 24 parcelas experimentais para cada cultura. Avaliou-se as produções de massa de matéria fresca e seca da parte aérea, taxas de crescimento relativo e absoluto. O uso das diferentes águas influenciou de maneira negativa no crescimento e rendi
ISSN:0100-316X
1983-2125
1983-2125
DOI:10.1590/1983-21252019v32n420rc