scholarly journals Tomato production in hydroponic system using different agrofilms as greenhouse cover

2020 ◽  
Vol 38 (1) ◽  
pp. 58-64
Author(s):  
Douglas José Marques ◽  
Edmur Matheus Filho ◽  
Hudson C Bianchini ◽  
Valdir Veroneze Junior ◽  
Breno Régis Santos ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Crop Production ◽  
Growth Habit ◽  
Soluble Solids ◽  
Tomato Crop ◽  
Indeterminate Growth ◽  
Tomato Production ◽  
Hydroponic System ◽  
Indeterminate Growth Habit ◽  
Lycopene Content

ABSTRACT Protected cultivation has increased over the years. More studies on the benefits of using photoselective agrofilms are necessary. The choice of material to cover the greenhouse is a decisive factor for crop development and production. The aim of this study was to evaluate the effect of diffuser and blue-colored agrofilms on the production of different tomato cultivars of indeterminate growth habit under NFT hydroponic system. A completely randomized design in a 2x3 factorial scheme (two environments and three cultivars) was used: two agrofilm types (blue and diffuser) and 3 cultivars (Monterrey, Arendell and Totalle). Each plot consisted of 30 plants per treatment, with four replicates. Commercial tomato seedlings of indeterminate growth habit grafted on rootstock cultivar (Shincheonggang) were used. During the experiment, the electrical conductivity, intensity of radiation inside the greenhouse, gas exchange, soluble solids, lycopene content, pH and fruit production were evaluated. We concluded that the amount of radiation transmitted through the diffuser favors an increase of about 18% in gas exchange, 12% in lycopene content and 9.4% in tomato crop production.

scholarly journals INDUSTRIAL TOMATO FOR FRESH CONSUMPTION: A TECHNICAL AND ECONOMICALLY VIABLE ALTERNATIVE

2020 ◽  
Vol 7 (3) ◽  
pp. 20-28
Author(s):  
Daianna Pereira Costa ◽  
Juliana Nascimento Da Silva ◽  
Donielsin Da Silva Assunção ◽  
Fritz Mohn Penteado ◽  
Abadia Dos Reis Nascimento
Keyword(s):  
Experimental Design ◽  
Production Cost ◽  
Growth Habit ◽  
Viable Alternative ◽  
Economic Viability ◽  
Indeterminate Growth ◽  
Tomato Production ◽  
Indeterminate Growth Habit ◽  
Lower Production ◽  
Tomato Genotypes

The cultivation of hybrid tomatoes, intended for fresh consumption, with a determined growth habit, and without support, is an alternative that has a lower production cost. The research aimed to evaluate the productivity and economic viability of different tomato genotypes, with a determinate and indeterminate growth habit. The experimental design was in completely randomized blocks. Ten hybrids and a variety were grown in 2016, and nine hybrids, and a variety in 2018, with a spacing of 0.5 meters between plants. Harvests were carried out in four periods in 2016, at 72, 82, 97, and 105 days after transplanting (DAT); and in 2018 at 81, 87, 97, and 111 DAT. After harvesting, the gross value of production and profit were quantified. The hybrids that obtained the highest production per plant in 2016 were Gabrielle (6,010 kg), with support; Thaise (5.529 kg); and N901 (5.003 kg). In 2018, Dominador and Thaise hybrids had the highest production, with 4.109 and 3.961 kg per plant, respectively. The gross value of tomato production in 2016 was higher than in 2018 for all hybrids and variety, except for Dominador hybrid. Hybrids with a determined growth habit and conducted without support are a profitable alternative to produce tomatoes intended for fresh consumption, especially the hybrid Gabrielle, which had the highest production. The economic viability of hybrids grown without support is superior to all hybrids with support.

scholarly journals Semi-Transparent Organic Photovoltaics Applied as Greenhouse Shade for Spring and Summer Tomato Production in Arid Climate

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1152
Author(s):  
Rebekah Waller ◽  
Murat Kacira ◽  
Esther Magadley ◽  
Meir Teitel ◽  
Ibrahim Yehia
Keyword(s):  
Solar Radiation ◽  
Organic Photovoltaics ◽  
Crop Production ◽  
Production Systems ◽  
High Light ◽  
Growth And Yield ◽  
Control Group ◽  
Tomato Crop ◽  
Tomato Production ◽  
Control Section

Recognizing the growing interest in the application of organic photovoltaics (OPVs) with greenhouse crop production systems, in this study we used flexible, roll-to-roll printed, semi-transparent OPV arrays as a roof shade for a greenhouse hydroponic tomato production system during a spring and summer production season in the arid southwestern U.S. The wavelength-selective OPV arrays were installed in a contiguous area on a section of the greenhouse roof, decreasing the transmittance of all solar radiation wavelengths and photosynthetically active radiation (PAR) wavelengths (400–700 nm) to the OPV-shaded area by approximately 40% and 37%, respectively. Microclimate conditions and tomato crop growth and yield parameters were measured in both the OPV-shaded (‘OPV’) and non-OPV-shaded (‘Control’) sections of the greenhouse. The OPV shade stabilized the canopy temperature during midday periods with the highest solar radiation intensities, performing the function of a conventional shading method. Although delayed fruit development and ripening in the OPV section resulted in lower total yields compared to the Control section (24.6 kg m−2 and 27.7 kg m−2, respectively), after the fourth (of 10 total) harvests, the average weekly yield, fruit number, and fruit mass were not significantly different between the treatment (OPV-shaded) and control group. Light use efficiency (LUE), defined as the ratio of total fruit yield to accumulated PAR received by the plant canopy, was nearly twice as high as the Control section, with 21.4 g of fruit per mole of PAR for plants in the OPV-covered section compared to 10.1 g in the Control section. Overall, this study demonstrated that the use of semi-transparent OPVs as a seasonal shade element for greenhouse production in a high-light region is feasible. However, a higher transmission of PAR and greater OPV device efficiency and durability could make OPV shades more economically viable, providing a desirable solution for co-located greenhouse crop production and renewable energy generation in hot and high-light intensity regions.

scholarly journals Root foraging and yield components underlying limited effects of Partial Root-zone Drying on oilseed rape, a crop with an indeterminate growth habit

2009 ◽  
Vol 323 (1-2) ◽  
pp. 163-176 ◽  
Author(s):  
Jinfeng Wang ◽  
Hans de Kroon ◽  
Ling Wang ◽  
Hannie de Caluwe ◽  
Gerard M. Bögemann ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
Yield Components ◽  
Growth Habit ◽  
Root Zone ◽  
Indeterminate Growth ◽  
Root Foraging ◽  
Indeterminate Growth Habit

scholarly journals Evaluation of Various Genotypes of Tomato (Solanum lycopersicum L.) on Quality Traits under Temperate Conditions of Kashmir

2021 ◽  
Author(s):  
B. Srinivasulu ◽  
M. Rashid ◽  
P. Pradeep Kumar ◽  
D. Srikanth ◽  
P.K. Singh
Keyword(s):  
Solanum Lycopersicum ◽  
Ascorbic Acid Content ◽  
Soluble Solids ◽  
Quality Traits ◽  
Tomato Production ◽  
Titrable Acidity ◽  
Solanum Lycopersicum L ◽  
Commercial Cultivation ◽  
Lycopene Content ◽  
Result Analysis

Background: Tomato is one of the most important vegetable crop grown in the world. Identification of better genotypes among the existing germplasm leads to the success of breeding programme. Elite genotypes should be known for our trait of interest. Methods: A field experiment was carried out at Vegetable Experimental Field, SKUAST-K, Shalimar, Srinagar during Kharif-2018 in which twenty seven genotypes of tomato (Solanum lycopersicum L.) were evaluated to estimate the performance of genotypes on various quality traits like lycopene content, titrable acidity, ascorbic acid content, total soluble solids and juice to pulp ratio. Result: Analysis of variance revealed significant differences among the genotypes for all the traits under studied. Highest lycopene content was recorded in the genotypes 2015/TODHYB-1, Roma and VRT-19 Whereas highest TSS content was exhibited by Kashi Aman, Roma, Jawahar-99 and Shalimar Hybrid Tomato-1. Highest titrable acidity recorded in Marglobe followed by 2015/TODHYB-4 and Kashi Hemanth. Juice to pulp ratio was highest in the genotypes namely, 2016/TODVAR-5 and Kashi Vishesh. Hence, the best performed genotypes can be used as such in promotion of tomato production programme as elite germplasm lines/varieties or may be recommended for commercial cultivation after testing them over years and locations.

scholarly journals A Smart Irrigation Tool to Determine the Effects of ENSO on Water Requirements for Tomato Production in Mozambique

2018 ◽  
Author(s):  
Eduardo Gelcer ◽  
Clyde W. Fraisse ◽  
Lincoln Zotarelli ◽  
Daniel Perondi ◽  
Hipólito A. Malia ◽  
...  
Keyword(s):  
Water Demand ◽  
Crop Production ◽  
Southern Oscillation ◽  
Irrigation Management ◽  
Irrigation Scheduling ◽  
Water Requirements ◽  
Planting Dates ◽  
Tomato Crop ◽  
Tomato Production ◽  
The Right

Irrigation scheduling is used by growers to determine the right amount and timing of water application. In most parts of Mozambique, 90% of the total yearly precipitation occurs from November to March. The El Niño Southern Oscillation (ENSO) phenomenon influences the climate in Mozambique and affects the water demand for crop production. The objectives of this work were to quantify the effects of ENSO phenomenon on tomato crop water requirements, and to create the AgroClimate irrigation tool (http://mz.agroclimate.org/) to assist farmers in improving irrigation management. This study was based on daily grid-based climate information from 1983 to 2016 from the Climate Forecast System Reanalysis. Daily crop evapotranspiration was calculated by Hargreaves equation and crop coefficients. This tool is available online and considers different planting dates, ENSO phases, and crop growing season lengths. Irrigation needs varied from less than 250 mm per growing cycle during winter to 550 mm during spring. Both El Niño and La Niña influenced the irrigation scheduling, especially from November to March. El Niño periods were related with increased water demand due to drier and warmer conditions while the opposite was observed for La Niña. The ENSO information might be used to understand climate variability and improve tomato irrigation scheduling in Mozambique.

scholarly journals Identification of RAPD Markers Linked to Major Gene for Indeterminate Growth Habit using Bulked Segregant Analysis in Common Bean Cross

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 623c-623
Author(s):  
S.O. Park ◽  
J.M. Bokosi ◽  
D.P. Coyne
Keyword(s):  
Rapd Markers ◽  
Growth Habit ◽  
Bulked Segregant Analysis ◽  
Major Gene ◽  
Indeterminate Growth ◽  
Bulked Dna ◽  
Rapd Primer ◽  
Plant Growth Habit ◽  
Indeterminate Growth Habit ◽  
Determinate Growth

Plant growth habit is an important trait. Our objective was to identify RAPD markers linked to major gene for indeterminate growth habit using bulked segregant analysis in an F2 population from a bean cross Chichara (indeterminate growth habit × PC-50 (determinate growth habit). A total of 132 RAPD primers (600 RAPD primer screened) showed polymorphisms between bulked DNA derived from indeterminate and determinate plants. All markers showed coupling linkage with indeterminate growth habit. RAPD markers of A-8, A-17, C-7, C-15, D-4, D-5, F-6, F-16, G-9, H-3, H-20, and I-7 were 2.2 cM distant from the gene for indeterminate growth habit. Markers of B-7, B-16, B-17, C-8, E-1, F-1, F-20 and H-l9 primers were 4.6 cM distant from the gene for indeterminate growth habit.

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