There is a large potential in Europe for valorization the vegetable food supply chain. For example, there occasionally overproduction of tomatoes fresh consumption, and fraction production unsuited consumption sale (unacceptable color, shape, maturity, lesions, etc.). In countries where facilities infrastructure tomato processing lacking, these are normally destroyed, used as landfilling or animal feed, represent an economic loss producers negative environmental impact. Likewise, also...

In this study, the effect of different photosynthetic photon flux density (PPFD) provided by LEDs (Light Emitting Diodes) and photoperiod on biomass production, morphological traits, performance, sensory attributes, image texture parameters indoor cultivated romaine lettuce was evaluated. Two cultivars Lactuca sativa var. longifolium namely ‘Casual’ (Syngenta)—midi with medium-compact heads—and ‘Elizium’ (Enza Zaden)—a mini type (Little Gem) compact heavy heads—were used. PPFD 160 240 µmol...

A multiparametric optical sensor was used to nondestructively estimate phytochemical compounds in white cabbage leaves directly the field. An experimental site of 1980 cabbages (Brassica oleracea L. var. capitata subvar. alba), under different nitrogen (N) treatments, mapped by measuring leaf transmittance and chlorophyll fluorescence screening one leaf/cabbage head. The provided indices flavonols (FLAV) (CHL) displayed opposite response applied N rates, decreasing increasing, respectively....

Here we report the results of a three-year replicated field trial on effects novel clover- and alfalfa-based fertilizer products (Ekofert® K Ekofert® L), with input levels equivalent to 120, 180, or 240 kg N ha−1, yield selected sensory nutritional quality parameters onion. The study showed that Ekofert applied at all three produced similar higher yields than standard fertilization regimes used in conventional farming seasons. Significant differences onion composition profiles between...

The study examined the influence of light quality on growth and nutritional status romaine lettuce grown in deep water culture with a floating raft system using two different nutrient solutions. Four spectra LED were used ratios R, G, B lights (80:10:10, 70:10:20, 60:10:30, 70:18:12). Two solutions low (A) moderately high (B) content used. Regardless solution, RGB 70:18:12 promoted production leaf biomass as well inhibited accumulation K Mg leaves. Moreover, those plants characterized by...

The integration of indoor vertical cultivation with a recirculating aquaculture system into an aquaponic has the potential to become one most effective sustainable production systems for fish and leafy vegetables. In this study, lettuce was produced on rafts in coupled recirculation plant factory under controlled environmental conditions. aims study were evaluate yield, mineral status, health-promoting bioactive compounds leaf romaine cultivars grown system. yield biometric parameters...

The Influence of pH Nutrient Solution On Yield and Nutritional Status Tomato Plants Grown in Soilless Culture System aim the studies conducted years 2004-2006 was determination influence nutrient solution different on yield nutritional status tomato plants grown soilless culture organic inert medium. were slabs made shredded rye straw peat rockwool. fertilized with standard pH: 4.5, 5.0, 5.5, 6.0, 6.5. kind applied growing substrates exerted significantly height total marketable cv. Blitz F...

The effect of different nitrogen treatments (100–400 kg N ha−1) on yield and quality marketable cabbage heads outer green leaves (waste fraction) two cultivars Brassica oleracea convar. capitata var. alba L. grown in years field experiment was studied. During harvest, the (not adjacent cabbage) were removed; total evaluated as well nutritive value determined based content some components, that is, dry matter, ascorbic acid, soluble polyphenols, flavonoids, nitrates, antioxidant activity...

The correct fertilization of vegetable crops is commonly determined on the basis soil and plant costly destructive analyses, demanding more sustainable non-invasive optical detection. Here, we tested ability combined transmittance/fluorescence leaf clip Dualex device for determining nitrogen (N) status cabbage plants. Fully developed leaves from plants grown under different N rates 0; 100; 200; 300 kg ha−1 in 2018 2019 were measured field by sensor twice a year July October. chlorophyll...

In an experiment with tomato and cucumber transplants, light units equipped purpose-built LED arrays were compared HPS sodium lamps a power of 600 W voltage 230 V. For both the lamps, same PAR radiation level was used at plant height, which about 70–80 μmol/m2/s in conditions without daylight. The supplementary lighting carried out for 8 to 24 hours switched on during day when solar outside greenhouse lower than 200 W/m2. did not have significant impact growth seedlings fresh dry mass...

ABSTRACT There is insufficient information on the effects of drip irrigation and fertigation with nitrogen growth development onions. The aim present work was to investigate possibility using these techniques in connection fertilization, where split into preplant side-dress application, that used onion (Allium cepa L.) production. Yield spring sown (cvs. Riviera F1 Utopia 1999 cv. only 2000), were investigated field experiments a sandy-loam soil. Nitrogen fertilization consisted application...

Thus far, lignite has not been used as a growing medium in soilless cultivation. The aim of the research conducted 2011-2013 was to develop new made lignite, and determine suitability such prolonged cultivation tomato under greenhouse conditions. Lumps were crashed sifted obtain fractions particles 20, 10, 2.5 mm diameter earthy fraction. Cultivation mats measuring 100 x 20 7 cm particular mixture fractions. These substrates cycle cultivar Growdena, with results compared its Grodan-Grotop...

Effect of Drip Irrigation, N-Fertigation and Cultivation Methods on the Yield Quality Carrot In years 2004-2006 research influence surface subsurface drip irrigation yield quality carrot grown ridges flat ground was investigated. Irrigation started at soil water potential 30-40 kPa. Nitrogen fertilizers (100 kg.ha -1 ) were applied in two rates. The first rate preplant applied, second used by fertigation. control treatment without irrigation, nitrogen broadcasting. Surface significantly...

Abstract BACKGROUND Accumulation and stability of tomato lycopene markedly depends on the cultivar, plant growing storage conditions. To estimate in open‐field cultivated processing fresh market tomatoes, we used a calibrated spectral reflectance portable sensor. RESULTS Lycopene accumulation fruits attached to plant, starting from Green ripening stage, followed sigmoidal function. It was faster reached higher levels (cv. Calista) than Volna) tomatoes (90 62 mg kg −1 weight, respectively)....

The aim was to determine the suitability of various substrates for application in a closed system soilless tomato cultivation, based on potential fitness drainage waters from these recirculation. Four were used: rockwool, coir substrate, lignite substrate (Carbomat) and biodegradable organic (Biopot). Tomato plants grown fertilized with same amount nutrient solution, containing concentration nutrients. characteristics water analyzed during cultivation. highest collected Carbomat. However,...

ABSTRACT The influence of irrigation, nitrogen rate and source, soil type on yield, quality nitrate content cauliflower was studied in field experiments. Irrigation provided at moisture potentials -20 -40 kPa secured a higher yield than that -60 kPa. Yield curds increased with rates up to 600 kg N/ha. Among the tested fertilizers, calcium produced highest curds. Out five types, obtained low moor peat silty clay loam. Nitrogen fertilization resulted linear increase leaves Nitrate influenced...

Effect of Nitration Organic Materials on Nitrogen Availability and Yield Tomato in Soilless Culture In the cultivation horticultural plants greenhouses most commonly used substrate is rockwool, while organic substrates are an unprocessed state. Cultivation substrates, after they have been suitably processed, also makes it possible to obtain high yields at levels similar those rockwool cultures. Fibrous due wide C:N ratio, characterized by biological sorption towards nitrogen, causing N...