Innovative harvest practices of Butterhead, Lollo rosso and Batavia green lettuce (Lactuca sativa L.) types grown in floating hydroponic system to maintain the quality and improve storability

Kotsiras, Anastasios; Vlachodimitropoulou, Athanasia; Gerakaris, A.; Bakas, N.; Darras, Anastasios I.

doi:10.1016/j.scienta.2016.01.021

Cited by 13 publications

(15 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…*Means in the same column and the same experiment for each species followed by different letters without parenthesis and means in the same column and the same nitrogen rate for each species followed by different letters in parenthesis are significantly different by LSD test at p=0.05 Fallovo et al (2009b) have also reported a significant effect of both growing season (spring and summer) and nutrient solution composition on growth and yield of lettuce plants grown in floating raft culture; however the reported total yields and mean plant weight were lower, mainly due to higher plant density (1857 plants m -2 ) and harvesting at an earlier stage (22-25 days after sowing) comparing to the present study. Kotsiras et al (2016) have reported significantly lower total yields than the present study (4.0 to 9.0 kg m -2 of fresh weight), a difference that could be attributed to the different lettuce types (Butterhead, Lollo Rosso and Batavia) and plant densities (20-30 plants m -2 ), comparing to the present study. Cultivation system affects significantly yield and earliness (date of harvest) of leafy vegetables.…”

Section: Discussioncontrasting

confidence: 92%

“…Such a technique combines the advantages of hydroponic cultivation with higher savings of water, fertilizers, time, labor and space, higher surviving rates of young seedlings during and after transplanting, heating of nutrient solution and therefore an improved nutrient uptake from roots and higher yield comparing to conventional production systems, and most importantly it is an eco-friendly technique Fallovo et al, 2009a,b;Kotsiras et al, 2016). Nicola et al (2005) reported that rocket plants grown in a soilless culture system had higher fresh leaf production in a shorter time period, compared to plants cultivated in soil, resulting in a higher total production of leaves.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Yield and Quality of Lettuce and Rocket Grown in Floating Culture System

Petropoulos

Chatzieustratiou

Constantopoulou

et al. 2016

Not Bot Horti Agrobo

View full text Add to dashboard Cite

In recent years, there has been a growing trend towards cultivating leafy vegetables in hydroponic systems. Floating system is an alternative hydroponic system suitable for the production of baby vegetable products, ready-to eat salads and minimally processed leafy vegetables. However, the implementation of this system for the production of fully grown leafy vegetables is not sufficiently studied. The aim of the present study was to examine the potential of floating system as an alternative growing technique of lettuce and rocket plants, as well as the effect of nitrogen (N) application rate (three treatments 100, 150 and 200 mg L -1 of N) on plant physiology, quality and yield during three growing periods. The results showed that increasing the N application rate resulted in an increase of fresh weight of the aerial parts of both lettuce and rocket, while total yield ranged between 12.0 to 41.9 and 8.0 to 30.2 kg m -2 of fresh leaves, for lettuce and rocket, respectively. In addition, increasing the nitrogen rate resulted in higher number of leaves for lettuce and rocket, as well as in a significant increase in the rate of photosynthesis. A similar increase was observed in nitrate, K, Mg and Mn content in the leaves, without however exceeding the permissible limits for nitrates in any case. In conclusion, the use of floating raft technique for lettuce and rocket cultivation in order to produce not only seedlings production or baby products, but also fully grown plants of high quality is highly recommended.

show abstract

Section: Discussioncontrasting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Yield and Quality of Lettuce and Rocket Grown in Floating Culture System

Petropoulos

Chatzieustratiou

Constantopoulou

et al. 2016

Not Bot Horti Agrobo

View full text Add to dashboard Cite

show abstract

“…To examine the colour changes in response to washing, total colour differences (ME) were calculated (Kotsiras et al, 2016). The Hunter L, a and b values for the standard plate were 96.66, À0.15 and 2.19, respectively.…”

Section: Colour Measurementmentioning

confidence: 99%

“…The Hunter L, a and b values for the standard plate were 96.66, À0.15 and 2.19, respectively. To examine the colour changes in response to washing, total colour differences (ME) were calculated (Kotsiras et al, 2016).…”

Section: Colour Measurementmentioning

confidence: 99%

Effect of pomegranate (Punica granatum) pomace extract as a washing agent on the inactivation of Listeria monocytogenes inoculated on fresh produce

Kang

Song

2017

Int J of Food Sci Tech

View full text Add to dashboard Cite

Summary Pomegranate pomace extract (PPE) was used as a substitute to chlorinated water for washing of fresh produce. PPE contained punicalagins and ellagic acids, and it had a good inhibitory effect against Listeria monocytogenes based on the results of disc diffusion test and time‐kill assay. Red chard, beet, chicon and red mustard leaves were treated with 7 mg mL−1 PPE as a washing solution to inactivate L. monocytogenes inoculated on fresh produce and compared with 0.05 mg mL−1 NaOCl treatment. After the treatment, L. monocytogenes population on the four leafy vegetables was reduced by 1.96–2.97 log CFU g−1 compared to that on nontreated samples. The reductions in L. monocytogenes after PPE treatment were higher than those observed after NaOCl treatment. Further, the PPE treatment did not affect the surface colour of all fresh produce applied in this study. Thus, PPE can be used as an effective antimicrobial washing agent of fresh produce.

show abstract

“…Sánchez del Castillo (2014) stated that some of the advantages found in the hydroponics system include high planting densities and an ideal balance of water and nutrients. The disadvantages are the high initial costs and extensive knowledge required for the functioning of these systems (Kotsiras et al, 2016) The technique of recirculating nutrient solution, known as NFT (Nutrient Film Technique), consists of the permanent flow of small amounts of solution through pipes, which allow the plants to take up the necessary nutrients for their adequate nutrition (Wortman, 2015). In NFT hydroponics, it is important to consider the following factors: maintain the temperature in the solution between 13 and 15°C, avoid a reduced absorption of the nutrients, pH must be in the range of 5.5 to 6.5, which applies to almost all plants, electrical conductivity (EC) should be around 1.5 to 3 mS cm -1 and the channels should have a slope of 1.5% to 2% (Wortman, 2015).…”

Section: Introductionmentioning

confidence: 99%