Abstract
The floating system is an inexpensive and easy hydroponic system. It can be used to produce small-size leafy vegetables or ready-to-use vegetables that are raising more and more interest among consumers. The aim of this study was to evaluate the effects of different salinity of nutrient solution and of water supply before the harvest, on rocket (Eruca sativa L.) plants hydroponically grown using the floating system technique. The growing cycle was carried out in greenhouse in march-april 2002. Two nutrient solutions with different electrical conductivity (2.8 and 3.8 mS cm-1) were compared. Both solutions had the same nutrient composition and the differences in EC were obtained using water with different salinity (ECw 0.8 and 1.6 mS cm-1). Five days before harvest, half of the floating boards were supplied only with water instead of nutrient solution, in order to evaluate the effect of this treatment on leaf nitrate content. Data were collected on plant height, leaf area, yeald and the ratio and content in the plant of anions and cations. The rocket shows a good adaptability to this growing system. EC levels tested have not affected the plant height and slightly influenced the yield. The water treatment before harvest, resulted in higher yeald and lower nitrate concentration.
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Claims 5
Claim · model-written summary
Rocket adapted well to the floating system.
Verbatim
e0“The rocket shows a good adaptability to this growing system”
Claim · model-written summary
The tested EC levels did not affect plant height.
Not reportedComparator
Verbatim
e0“EC levels tested have not affected the plant height”
t0“ERUCA SATIVA L.”
Claim · model-written summary
The tested EC levels slightly influenced yield, without a stated direction.
Not reportedComparatorDirection
Verbatim
e0“EC levels tested have not affected the plant height and slightly influenced the yield”
t0“ERUCA SATIVA L.”
Claim · model-written summary
Water before harvest increased yield.
Verbatim
e0“The water treatment before harvest, resulted in higher yeald and lower nitrate concentration”
e1“only with water instead of nutrient solution”
t0“ERUCA SATIVA L.”
Claim · model-written summary
Water before harvest lowered nitrate concentration.
Verbatim
e0“The water treatment before harvest, resulted in higher yeald and lower nitrate concentration”
e1“only with water instead of nutrient solution”
t0“ERUCA SATIVA L.”
The same questions in other papers
irrigation · nutrient: content · Eruca vesicariaPositive and negative results
1 in the opposite direction
- no effect
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.