Foliar applications of a legume-derived protein hydrolysate elicit dose-dependent increases of growth, leaf mineral composition, yield and fruit quality in two greenhouse tomato cultivars

2017 ◽  
Vol 226 ◽  
pp. 353-360 ◽  
Author(s):  
Youssef Rouphael ◽  
Giuseppe Colla ◽  
Maria Giordano ◽  
Christophe El-Nakhel ◽  
Marios C. Kyriacou ◽  
...  
Keyword(s):  
Mineral Composition ◽  
Fruit Quality ◽  
Protein Hydrolysate ◽  
Greenhouse Tomato ◽  
Tomato Cultivars ◽  
Dose Dependent

scholarly journals Effects of Cultivars and Culture Systems on Yield and Postharvest Quality of Greenhouse Tomato

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 847D-847
Author(s):  
Serge Gagnon ◽  
Mohamed Mzouri ◽  
André Gosselin
Keyword(s):  
Shelf Life ◽  
Fruit Quality ◽  
Culture System ◽  
Soluble Sugars ◽  
Postharvest Quality ◽  
Culture Systems ◽  
Titrable Acidity ◽  
Greenhouse Tomato ◽  
Tomato Cultivars

Our purpose was to determine cultivar and culture system effects on yield and postharvest quality of greenhouse tomato Lycopersicon esculentum. Nine tomato cultivars were sown into rockwool cubes on 2 Feb. 1994. The plants were transplanted into peat bags or nutrient film (NFT) systems on 9 Mar. Harvesting began on 2 May until 26 Sept. for a total of 21 harvest weeks. Fruit yield, rejected or nonmarketable fruit and four fruit quality indicators (fruit texture, color, titrable acidity, and soluble sugars) were measured during the harvest period. In addition, these indicators were further evaluated every 7 days during 28 days of storage at 20C and 90% RH for `Trust' and `Cencara', a long shelf-life cultivar. `Bounty', `Panther', and `Cencara' gave higher yields on rockwool but `Irazu', `Correct', `73-53', and `Medallion' gave better results on NFT. `Trust' produced the best yield for either rockwool or NFT. Culture systems (peat bags or NFT) did not affect fruit quality. `Cencara', which is a long shelf-life cultivar, kept high texture quality until 28 days of storage. However, titrable acidity of `Cencara' was higher and soluble sugars content was lower than that of `Trust'

Limitations of the K:N ratio in the nutrient feed of drip-irrigated greenhouse tomatoes as a crop-management tool

1993 ◽  
Vol 73 (1) ◽  
pp. 289-296
Author(s):  
Athanasios P. Papadopoulos ◽  
Shalin Khosla
Keyword(s):  
Fruit Quality ◽  
Concentration Ratio ◽  
Yield Loss ◽  
Management Tool ◽  
Marketable Yield ◽  
Osmotic Effect ◽  
Greenhouse Tomato ◽  
Tomato Cultivars ◽  
Greenhouse Tomatoes ◽  
Nutrient Feed

Greenhouse tomato cultivars were grown over three spring (1987, 1988 and 1989) and two fall (1987 and 1988) seasons in soil to assess the yield and fruit-quality effects of the potassium (K):nitrogen (N) concentration ratio in the fertigation solution. In the spring, the K:N ratio was varied over the first 11 wk following planting to provide a high, medium or low K:N ratio in the fertigation solution. The K:N ratio in the fertigation solution varied from 14:1 (week 1) to 2:1 (week 11) or from 8:1 (week 1) to 2:1 (week 11) or remained steady at 2:1 (weeks 1–11) for the high-, medium- and low-K:N treatments, respectively. In the fall the K:N ratio varied from 3:1 (week 3) to 9:1 (week 10), or from 2.3:1 (week 3) to 6:1 (week 10), or from 1.5:1 (week 3) to 3:1 (week 10) for the high-, medium- and low-K:N treatments, respectively. The marketable yields harvested averaged around 7.5 kg plant−1 in the spring and 2.5 kg plant−1 in the fall. The K:N ratio in the fertigation solution had no significant effect on early, or final, total or marketable yield. Similarly, there were no significant effects on fruit quality. It was concluded that provided a recommended overall osmotic effect (measured as electrical conductivity) of the nutrient solution is maintained, fertilizers can be selected and used on the basis of cost, or other important criteria, without concern for yield loss due to undesirable K:N ratio effect. Key words: Lycopersicon esculentum, marketable yield

scholarly journals Developing Value-added Practices and Branding for High-Sugar Tomatoes

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 777D-777
Author(s):  
Christopher D. Harlow ◽  
Elizabeth S. Larrea ◽  
Mary M. Peet*
Keyword(s):  
North Carolina ◽  
Fruit Quality ◽  
Cultural Practices ◽  
Value Added ◽  
High Sugar ◽  
Greenhouse Tomato ◽  
The North ◽  
Tomato Cultivars ◽  
Fertilizer Regimes ◽  
High Fertilization

Research was initiated at the N.C. State Univ. Horticultural Field Laboratory, Raleigh, to identify cultural practices and tomato cultivars giving superior taste under North Carolina greenhouse conditions. The specialty cultivars `67', `Diana', `Elegance', `Momotaro', and `S630' were grown and harvested, as well as `Trust', which is grown on 85% of the North American greenhouse tomato acreage. Additionally, two fertilizer regimes were provided to the plants: standard greenhouse tomato fertilization (EC ≈1.75 dS·m-1) or high fertilization (EC ≈3.75 dS·m-1). Fertilizers were the same in both treatments. Seeds were started in October 2002 and transplanted, 2 per pot, into `Bato' buckets containing perlite in November. Standard cultural practices were followed, and plants were fertigated using the Harrow Fertigation Manager™ system. Taste tests conducted on three dates revealed differences among cultivars, with `67', `Elegance' and `Momotaro' consistently scoring well. Overall, all test varieties were scored higher than `Trust'; however flavor was somewhat less sweet than anticipated, especially early in the season, averaging 2-3 on a scale of 5, where 5 was “best”. No significant differences were seen between the standard and high fertilization treatments. Differences in total harvest weight were seen among cultivars. `Elegance' and `67' produced fruit consistently well through the harvest season, while the remaining cultivars' yields were sporadic. Harvested fruit were homogenized, and Brix was measured as an indicator of fruit quality. Significant differences in Brix were seen among the cultivars, with `67' significantly higher than all other varieties and `Elegance' and `Momotaro' higher than the remaining cultivars. All specialty cultivars had higher °Brix than `Trust'.

GRAFTED TOMATOES – ECOLOGICAL ALTERNATIVE FOR CHEMICAL DISINFECTION OF SOIL

2020 ◽  
Author(s):  
Dorin Sora ◽  
Mădălina Doltu
Keyword(s):  
Fruit Quality ◽  
Mineral Elements ◽  
Stress Factors ◽  
Vegetable Crops ◽  
Biotic And Abiotic Stress ◽  
Solanum Lycopersicum L ◽  
Abiotic Stress Factors ◽  
Increase Productivity ◽  
Tomato Cultivars ◽  
Chemical Disinfection

This study aimed to identification of an ecological alternative for the chemical disinfection of soil in the greenhouses from Romania. Tomato (Solanum lycopersicum L.) is one of the most popular vegetable crops in the world. The carbohydrate, vitamins, salts of important mineral elements and organic acids content of tomato fruits is very important. Tomato crops are very sensitive to climatic vagaries, so fluctuation in climatic parameters at any phase of growth can affect the yield and the fruit quality. Grafting on Solanaceae is a method which has improved and spread quickly during the past years, a similar approach to crop rotation, a practice meant to increase productivity, resistance or tolerance to biotic and abiotic stress factors and at increasing fruit quality. The research was conducted in a glass greenhouse of the Horting Institute, Bucharest, Romania. The biological material used was a Romanian tomato hybrid (Siriana F1), a Dutch tomato hybrid (Abellus F1) and four rootstocks, a Dutch tomato hybrid (Emperador F1) and three Romanian tomato cultivars (L542, L543 and L544) obtained from the Research and Development Station for Vegetable Growing, Buzău, Romania. The rootstocks have had resistance to biotic stress factors (soil diseases and pests) and the chemical disinfection of soil has was eliminated. The result of this research are presented in this paper.

Effect of supplementary light on growth, yield and fruit quality of two tomato cultivars grown in high-tech glasshouse

2021 ◽  
pp. 1-8
Author(s):  
A. Alharbi ◽  
O. Babiker ◽  
J. Campen ◽  
M.E. Abdelaziz ◽  
F. de Zwart ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Growth Yield ◽  
High Tech ◽  
Tomato Cultivars

scholarly journals Morphological, Leaf Nutrient, and Fruit Quality Characteristics of Diverse Tomato Cultivars under Organic Low-Input Management

2021 ◽  
Vol 13 (21) ◽  
pp. 12326
Author(s):  
Leangsrun Chea ◽  
Cut Erika ◽  
Marcel Naumann ◽  
Inga Smit ◽  
Bernd Horneburg ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Plant Morphology ◽  
Quality Characteristics ◽  
Fruit Yield ◽  
Soluble Solids ◽  
Mineral Concentration ◽  
Tomato Production ◽  
Low Input ◽  
Yield And Quality ◽  
Tomato Cultivars

Increasing fruit yield and quality of tomatoes under organic low-input conditions remains a challenge for producers and breeders. Therefore, it is necessary to identify superior tomato cultivars that are suitable for production and use as parents in breeding programmes. In the present study, the variations in plant morphology and fruit quality characteristics of tomato cultivars were assessed to reveal the traits associated with improved yield and fruit quality. Sixty diverse tomato cultivars were screened in 2015, and in 2016, a subset of 20 cultivars was selected for further evaluation under organic low-input conditions. The results showed high variability among cultivars in all 28 traits that were observed. Salad cultivars had lower plant growth and fruit quality (minerals, dry matter, total soluble solids, and total phenolics) by 10–70%, but they displayed 10–60% higher fruit yield and leaf minerals than cocktail cultivars. Salad tomato cultivars with superior yield and harvest index were mainly derived from breeding for intensive indoor production. Cocktail cultivars with superior yield were mainly derived from organic and outdoor breeding programs. There was a trade-off between fruit yield and quality, indicating a challenge for simultaneous improvement of yield and quality. The importance of Mg was highlighted because of its contribution to the fruit mineral concentration and fruit quality. Cultivars superior in one trait or trait combination under organic low-input conditions were identified to be used by producers and breeders as superior cultivars to meet their production targets and breeding objectives. The importance of Mg provides a novel path for further research on improving soil-available Mg in organic tomato production to enhance fruit mineral concentration and fruit quality in general.

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