scholarly journals Influence of Cultivar, Growing Media, and Cluster Pruning on Greenhouse Tomato Yield and Fruit Quality

2009 ◽  
Vol 19 (2) ◽  
pp. 395-399 ◽  
Author(s):  
Hanna Y. Hanna
Keyword(s):  
Fruit Quality ◽  
Fruit Weight ◽  
The Other ◽  
Pine Bark ◽  
Soluble Solids ◽  
Marketable Yield ◽  
Growing Media ◽  
Greenhouse Tomato ◽  
Tomato Yield ◽  
Marketable Fruit

Cultivars and growing media are important components of a successful greenhouse tomato (Solanum lycopersicum) operation. Two studies were conducted simultaneously and independently in two 30 × 96-ft greenhouses in Spring 2006 and 2007 (January–July) to assist producers in selecting appropriate cultivars and reducing production cost. The first study was conducted to evaluate yield, fruit weight, fruit quality, and shelf life of ‘Geronimo’, ‘Quest’, and ‘Trust’ tomatoes planted in perlite and pruned to three or four fruit per cluster. The second study was conducted to determine the initial cost of perlite, pine bark, and rockwool growing media and their effect on yield of ‘Quest’ pruned to three or four fruit per cluster. ‘Geronimo’ produced the highest total marketable yield and ‘Trust’ produced the lowest. ‘Trust’ produced more cull yield and lower fruit weight than ‘Geronimo’ or ‘Quest’. Pruning clusters to three fruit increased total marketable yield and fruit weight, and reduced cull yield of all cultivars. Only ‘Geronimo’ produced higher early marketable yield at four fruit per cluster. All cultivars produced higher early marketable yield in 2007 than in 2006. Tested cultivars had similar fruit content of potassium and sodium and similar concentration of soluble solids. ‘Trust’ fruit had a higher pH than the other two cultivars. About 92% of ‘Quest’ tomatoes remained marketable after storage at 67 °F for 1 week. ‘Geronimo’ and ‘Trust’ had only 83% and 78% marketable fruit, respectively, under the same conditions. Initial costs to grow greenhouse tomatoes in perlite were higher than in rockwool, and were the lowest in pine bark. Plants grown in perlite produced higher total marketable yield than plants grown in either of the other media. They produced lower cull yield than plants grown in rockwool, but produced similar cull yield to plants grown in pine bark. Pruning clusters to three fruit increased total marketable yield and fruit weight in both studies. Pruning clusters to four fruit increased cull yield in both studies regardless of planting year.

Effects of Trichoderma harzianum on the yield and fruit quality of tomato plants (Lycopersicon esculentum) grown in an unheated greenhouse

2006 ◽  
Vol 46 (1) ◽  
pp. 131 ◽  
Author(s):  
U. Bal ◽  
S. Altintas
Keyword(s):  
Fruit Quality ◽  
Trichoderma Harzianum ◽  
Root Zone ◽  
Total Yield ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Marketable Yield ◽  
Growing Media ◽  
Growing Period

Trichoderma harzianum was applied to seedling growing media (a peat and soil-based mixture or greenhouse soil) at the time of sowing, at transplanting to vials and at planting. The factorial experiment using 2 seedling growing media, 2 cultivars and 4 dosages of T. harzianum at 0 (control), 4 g/m2, 10 g/m2 and 24 g/m2 showed that the Trichoderma dosage had no significant effect on the yield or fruit quality. None of the 3 factor interactions between the criteria studied, that is, total yield, marketable yield, early yield, individual fruit weight, total soluble solids and titratable acidity, were significant except for fruit diameter. The 3 factor combination of Peat × Belleveu F1 × 10 g/m2 resulted in the highest total yield, marketable yield and early yield with 1552, 1373 and 681 g/plant, respectively. The interaction between media and cultivars was significant for all the yield characteristics studied. However, the main effect of T. harzianum on early yield was the highest at 4 g/m2, producing 527 g/plant in comparison to the control with 374 g/plant. It was, therefore, hypothesised that the positive effect of T. harzianum, observed in the early yield, may be extended to the whole growing period by further applications, that is, by periodical renewal of the T. harzianum population at the root zone.

scholarly journals In-row Distance in Triploid Miniwatermelon Cultivars Affects Yield and Quality in Diverse Environments in the Southeastern United States

2009 ◽  
Vol 19 (3) ◽  
pp. 538-545
Author(s):  
Richard L. Hassell ◽  
Jonathan R. Schultheis ◽  
Wilfred R. Jester ◽  
Stephen M. Olson ◽  
Gilbert A. Miller
Keyword(s):  
South Carolina ◽  
Citrullus Lanatus ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Row Spacing ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Marketable Fruit ◽  
Eastern North Carolina ◽  
Location Interaction

The goals of these studies were to determine how miniwatermelon (Citrullus lanatus) cultivars differed and responded to plant in-row spacing in terms of percentage of marketable fruit and yields, and if plant spacing impacted internal fruit quality. Three genetically diverse triploid miniwatermelon cultivars (Mohican, Petite Perfection, and Xite) were selected. These cultivars were evaluated in field locations at northern Florida (Quincy), central South Carolina (Blackville), coastal South Carolina (Charleston), and eastern North Carolina (Kinston) at five within-row distances. Within-row distance included 9, 12, 15, 18, and 21 inches. All plots were15 ft long with row middles 9 ft apart. Fruit were categorized as marketable if they weighed between 3.1 and 9.0 lb per fruit. Within this range further categories were divided as follows: ≤3.0 lb (cull), 3.1 to 5.0 lb (small), 5.1 to 7.0 lb (average), 7.1 to 9.0 lb (large), and ≥9.1 lb (cull). There was a cultivar by location interaction, suggesting that the three cultivars responded differently at each of the four locations. ‘Petite Perfection’ was among the highest yielding at all locations except Quincy, where it was the lowest yielding cultivar. As with total yields, the percentage of marketable fruit was similar for some cultivars across locations. Cultivar Petite Perfection produced the highest percentage of marketable fruit at three of the four locations. The exception was the Quincy site where ‘Xite’ had the highest percentage of marketable fruit. Within-row plant distances and populations affected total marketable yield, both for fruit weight and number per plant, regardless of cultivar and location. As the plant population increased from eight plants per plot (21-inch in-row spacing) to 12 plants per plot (15-inch in-row spacing), total marketable miniwatermelon fruit yields increased in total fruit number as well as total weight. There was a cultivar by location interaction for the percentage of soluble solids and the rind thickness measurements, suggesting that some cultivars responded differently at each of the four locations. Quality effects were more apparent with ‘Mohican’ and ‘Xite’, as they were more responsive to location than ‘Petite Perfection’.

scholarly journals Fertilizer Substitutions in Hydroponically Grown Greenhouse Tomatoes

1999 ◽  
Vol 9 (1) ◽  
pp. 59-65 ◽  
Author(s):  
A.P. Papadopoulos ◽  
S. Pararajasingham ◽  
X. Hao
Keyword(s):  
Fruit Quality ◽  
Total Yield ◽  
Growth Yield ◽  
Fruit Weight ◽  
Crop Growth ◽  
Partial Substitution ◽  
Marketable Yield ◽  
Nutrient Film Technique ◽  
Marketable Fruit ◽  
Crop Growth Stage

Experiments were carried out to evaluate two salts, K2SO4 and NaCl, as materials to supplement the electrical conductivity (EC) of the basic nutrient solution in nutrient film technique (NFT). The effects of these materials on the growth, yield and fruit quality of greenhouse tomato (Lycopersicon esculentum Mill.) grown by NFT were quantified. These effects were tested by increasing the recirculating solution EC from a base value of 1500 μS·cm-1 to that suitable for the crop growth stage with normal feed (macronutrients), 0.38 m (0.53 lb/gal) K2SO4 or 1.14 m (0.55 lb/gal) NaCl, at a common pH of 6.2. In 1995 and 1996, there were no significant effects of the treatments on crop growth. In 1995, the early marketable yield was significantly lower when K2SO4 was used but the yield at the end of the season did not differ among the treatments. Furthermore, with K2SO4, the proportion of grade #1 fruit in early total yield was lower than in the control, while, fruit biomass content was higher than in the NaCl treatment. In 1996, the cumulative marketable fruit weight was unaffected by the treatments. A trend toward high number of large grade fruit occurred with the NaCl treatment. The pH and EC of the fruit homogenate were favorably affected by the NaCl treatment. Adding K2SO4 or NaCl in partial substitution of macronutrients in the recirculating solution may have a role in NFT systems in not only reducing environmental pollution (from nitrates and phosphates) and fertilizer costs, but also in improving fruit quality and, therefore, profit margins.

scholarly journals Feasibility of Trellised Cucumber Production

HortScience ◽  
1991 ◽  
Vol 26 (9) ◽  
pp. 1156-1158 ◽  
Author(s):  
V.M. Russo ◽  
B.W. Roberts ◽  
R.J. Schatzer
Keyword(s):  
Economic Analysis ◽  
Cucumis Sativus ◽  
Management System ◽  
Fruit Weight ◽  
The Other ◽  
Small Scale ◽  
Fresh Market ◽  
Marketable Yield ◽  
Marketable Fruit

Trellising was evaluated for its effects on yields of cucumber (Cucumis sativus L.) cultivars Dasher II, Marketmore 76, and PetoTripleMech at Lane and Wilbutton, Okla. Trellising improved total and marketable yield at both locations compared with ground culture. `PetoTripleMech', evaluated as a fresh-market cultivar, produced yields equal to, or higher than, the other cultivars. Average marketable fruit weight was not affected by trellising but was affected by cultivar at Lane, with `PetoTripleMech' having the heaviest fruit. Economic analysis indicated that trellising is a viable management system for small-scale cucumber production.

scholarly journals (313) Climatic Effectson Four Low-chill Peach Cultivars in North Central and Central Florida

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1026D-1027
Author(s):  
Todd Wert ◽  
Jeffrey G. Williamson ◽  
Robert E. Rouse ◽  
E. Paul Miller
Keyword(s):  
Fruit Quality ◽  
Average Length ◽  
Fruit Size ◽  
Soluble Solids ◽  
Flower Buds ◽  
Marketable Yield ◽  
North Central ◽  
Central Florida ◽  
Marketable Fruit ◽  
Vegetative And Reproductive Growth

Four low-chill peach cultivars were evaluated for vegetative and reproductive growth, fruit quality, and yield in north central and central Florida. Twenty-trees (five of each cultivar) were planted at each site in Feb. 2002. Prior to budbreak in the spring of 2004 and 2005, three shoots of average length and diameter were selected at a height of 1.5–2.0 m and the number of vegetative and flower buds was recorded for each shoot. Percentage of bloom was estimated, and the number of open flowers on selected shoots was measured weekly. Trees were harvested twice per week starting in mid-April in central Florida, and in late April in north central Florida. Total number and weight of marketable fruit was measured for each tree. Ten representative fruits were selected from each tree at each harvest. Fruit were measured for blush, weight, and size. Soluble solids, TAA, and pressure were determined for five fruit from each 10-fruit sample. Preliminary results indicate a higher mean number of blind nodes in central Florida and a higher mean number of flower buds in north central Florida. In central Florida, 90% bloom was about 4 days earlier than north central Florida. Fruit number and individual fruit size, weight, and marketable yield were higher in north central Florida than in central Florida. Fruit blush was higher in central Florida than in north central Florida and tended to increase as the season progressed. In north central Florida, blush decreased slightly throughout the season.

scholarly journals DOSES DE POTÁSSIO VIA FERTIRRIGAÇÃO NA PRODUÇÃO E QUALIDADE DE FRUTOS DE MELANCIA EM PARNAÍBA, PI

Irriga ◽  
2005 ◽  
Vol 10 (3) ◽  
pp. 205-214 ◽  
Author(s):  
Aderson Soares Andrade Júnior ◽  
Nildo Da Silva Dias ◽  
Luiz Gonzaga Medeiros Figueredo Júnior ◽  
Rossini Daniel ◽  
Valdemir Queiroz Ribeiro
Keyword(s):  
Experimental Design ◽  
Fruit Quality ◽  
Plant Nutrition ◽  
Citrullus Lanatus ◽  
Soluble Solids ◽  
Chemical Quality ◽  
Marketable Yield ◽  
Titrable Acidity ◽  
Marketable Fruit

DOSES DE POTÁSSIO VIA FERTIRRIGAÇÃO NA PRODUÇÃO E QUALIDADE DE FRUTOS DE MELANCIA EM PARNAÍBA, PI  Aderson Soares Andrade Junior1; Nildo da Silva Dias1; Luiz Gonzaga Medeiros Figueredo Junior2; Rossini Daniel2; Valdenir Queiroz Ribeiro11Embrapa Meio-Norte, Teresina, PI, [email protected] de Agronomia, Universidade Estadual do Piauí, Parnaíba, PI.   1 RESUMO Com o objetivo de avaliar o efeito da aplicação de diferentes doses de potássio via fertirrigação em melancia (Citrullus lanatus (Thumb.) Matsum. & Nakai), cultivar Crimson Sweet, foi conduzido um experimento na área experimental da Embrapa Meio-Norte, localizado no município de Parnaíba, PI, durante os meses de setembro a dezembro de 2004. O delineamento experimental utilizado foi o de blocos casualizado, com quatro repetições. Os tratamentos foram constituídos por cinco doses de K2O (0, 40, 80, 120 e 160 kg ha-1). Foram avaliadas as produções total e comercial, sólidos solúveis totais (SST), acidez total titulável (ATT) e pH. Não houve efeito das doses de K2O sobre a qualidade química dos frutos de melancia. A produção comercial dos frutos aumentou com a adubação potássica até a dose de 92,02 kg ha-1 de K2O. UNITERMOS: Citrullus lanatus, nutrição de plantas, irrigação localizada.  ANDRADE JUNIOR, A.S.; DIAS, N.S.; FIGUEREDO JUNIOR, L.G.M.; RIBEIRO, V.Q.; DANIEL, R.  POTASSIUM DOSES THROUGH FERTIGATION ON WATERMELON YIELD AND FRUIT QUALITY IN PARNAÍBA, PI, BRAZIL  2 ABSTRACT The aim of this study was to evaluate the effect of different potassium doses applied through fertirrigation to watermelon (Citrullus lanatus (Thumb.) Matsum. & Nakai), cv. Crimson Sweet.  The experiment was carried out at an area of Embrapa Meio-Norte in Parnaíba, Piauí State, Brazil, from September to December, 2004. The experimental design was a completely randomized block, with four replications and five potassium doses (0, 40, 80, 120 and 160 kg ha-1). The total and marketable yield, total soluble solids (TSS), total titrable acidity (TTA) were evaluated. Results showed that the chemical quality of watermelon fruits was not significantly affected by potassium doses. The marketable fruit yield increased until potassium dose was 92.02 kg ha-1 of K2O. KEYWORDS: Citrullus lanatus, plant nutrition, drip irrigation.

Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate

1995 ◽  
Vol 75 (2) ◽  
pp. 497-503 ◽  
Author(s):  
J. Norrie ◽  
J. Charbonneau ◽  
A. Gosselin ◽  
M. E. D. Graham
Keyword(s):  
Electrical Conductivity ◽  
Nutrient Solution ◽  
Irrigation Management ◽  
Total Yield ◽  
Fruit Weight ◽  
Mineral Concentration ◽  
Matric Potential ◽  
Greenhouse Tomato ◽  
Tomato Yield ◽  
Marketable Fruit

Irrigation dynamics and the response of greenhouse tomato (Lycopersicon esculentum Mill. 'Caruso') to different irrigation management treatments (nutrient solution EC and irrigation matric potential setpoints) were examined in plants grown in peat-based substrate during either the spring or fall of 1989. Two nutrient solutions with differing electrical conductivity (EC of 1.5 and 3.0 dS m−1) were automatically applied to plants until saturation at one of two substrate matric potential (SMP) setpoints (−6.5 or −4.5 kPa). Yield measurements indicated no significant effects due to different SMP setpoints but spring total yield and average marketable fruit weight were higher for low-EC solution treatments. Blossom-end rot was slightly higher in the fall under the highest EC treatment. Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution. The EC of peat substrates was also found to be higher than applied solutions indicating an overall accumulation of salts within the peat under different irrigation regimes, even with periodic overwatering. This study indicates that increasing nutrient solution EC from 1.5 to 3.0 dS m−1 can negatively affect the production and nutritional status of tomato plants more than changing irrigation setpoints from −4.5 to −6.5 kPa. Key words: Electrical conductivity, fruit quality, peat, tensiometers, matric potential

scholarly journals Impacts of the substrate medium on tomato yield and fruit quality in soilless cultivation

2008 ◽  
Vol 35 (No. 2) ◽  
pp. 83-89 ◽  
Author(s):  
G. Tzortzakis N ◽  
D. Economakis C
Keyword(s):  
Fruit Quality ◽  
Total Yield ◽  
Titratable Acidity ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Matter Content ◽  
Soluble Solids ◽  
Dry Matter Content ◽  
Soilless Culture ◽  
Tomato Yield

The performance and suitability of different substrates for the soilless culture of tomato plants (<I>Lycopersicum esculentum</I> Mill., cv. Belladona) were studied over a 5-month period in a closed soilless culture system employing five different substrates (perlite, pumice or maize and their mixtures with 50% shredded maize stems in an unheated glasshouse). Plants grown in a maize stem-containing medium produced earlier fruits, followed by pumice. Plants grown in pumice and perlite substrates obtained lower total yield; a higher yield was associated with the addition of maize shredded stems. Pumice + 50% maize and 100% maize produced higher total number of fruits per plant. Fruit quality parameters such as mean fruit weight, fruit firmness, total soluble solids, titratable acidity, ascorbic acid and carotenoids were influenced by the treatment, while EC, pH and dry matter content were not. The results suggest that the addition of maize in perlite and pumice could improve inorganic substrates properties for tomato soilless culture, leading to higher yields and better fruit quality.

scholarly journals Yield and Fruit Quality Traits of Carambola Cultivars Grown at Three Locations in Puerto Rico

2007 ◽  
Vol 17 (4) ◽  
pp. 604-607
Author(s):  
Ricardo Goenaga
Keyword(s):  
Puerto Rico ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Intensive Management ◽  
Marketable Yield ◽  
Averrhoa Carambola ◽  
Solids Concentration ◽  
High Production ◽  
Marketable Fruit ◽  
Soluble Solids Concentration

There is a scarcity of information on how carambola (Averrhoa carambola) cultivars perform in various agroenvironments. Nine carambola cultivars—Arkin, B-10, B-16, B-17, Kajang, Kari, Lara, Sri Kembangan, and Thai Knight—grown on an Oxisol, an Ultisol, and a Mollisol were evaluated for 4 years under intensive management at Isabela, Corozal, and Juana Díaz, PR, respectively. There were no significant differences in number and weight of marketable fruit per hectare area among locations averaging 258,761 fruit/ha and 30,978 kg·ha−1, respectively. There were no significant differences of marketable fruit weight per hectare among highest yielding cultivars B-17, Thai Knight, and Sri Kembangan between locations. The average marketable fruit weight for these highest-yielding cultivars was 36,060 kg·ha−1. ‘Arkin’ and ‘B-16’ were the lowest yielding cultivars, averaging 23,490 kg·ha−1 of marketable fruit. ‘Kari’ produced significantly longer fruit at all locations, whereas ‘B-16’ produced the shortest fruit. Significantly higher soluble solids concentration values were obtained from fruit of ‘B-17’ at all locations, whereas lower values were obtained from those of ‘Arkin’. Overall, cultivars were highly adaptable to the diverse agroenvironments in which they were planted. The fact that ‘B-17’ had high production of marketable fruit, high marketable yield, and high soluble solids concentration at all locations makes this cultivar suitable for planting in diverse agroenvironments.

scholarly journals Higher Temperatures Decrease Fruit Size in Strawberry Growing in the Subtropics

Horticulturae ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 34
Author(s):  
Christopher Menzel
Keyword(s):  
Fruit Size ◽  
Negative Relationship ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Marketable Yield ◽  
Significant Relationships ◽  
Small Fruit ◽  
Solids Content

Five strawberry (Fragaria × ananassa Duch.) cultivars were grown in Queensland, Australia to determine whether higher temperatures affect production. Transplants were planted on 29 April and data collected on growth, marketable yield, fruit weight and the incidence of small fruit less than 12 g until 28 October. Additional data were collected on fruit soluble solids content (SSC) and titratable acidity (TA) from 16 September to 28 October. Minimum temperatures were 2 °C to 4 °C higher than the long-term averages from 1965 to 1990. Changes in marketable yield followed a dose-logistic pattern (p < 0.001, R2s = 0.99). There was a strong negative relationship between fruit weight (marketable) and the average daily mean temperature in the four or seven weeks before harvest from 29 July to 28 October (p < 0.001, R2s = 0.90). There were no significant relationships between SSC and TA, and temperatures in the eight days before harvest from 16 September to 28 October (p > 0.05). The plants continued to produce a marketable crop towards the end of the season, but the fruit were small and more expensive to harvest. Higher temperatures in the future are likely to affect the economics of strawberry production in subtropical locations.

Sign in / Sign up

Export Citation Format

Share Document