Effects of greenhouse cooling method on growth, fruit yield and quality of tomato (Solanum lycopersicum L.) in a tropical climate

2009 ◽  
Vol 122 (2) ◽  
pp. 179-186 ◽  
Author(s):  
Johannes F.J. Max ◽  
Walter J. Horst ◽  
Urbanus N. Mutwiwa ◽  
Hans-Jürgen Tantau
Keyword(s):  
Solanum Lycopersicum ◽  
Tropical Climate ◽  
Fruit Yield ◽  
Solanum Lycopersicum L ◽  
Yield And Quality ◽  
Cooling Method

scholarly journals The Effects of Nitrogen and Phosphorus Fertilizer Rates on Yield and Quality of Tomato (Solanum lycopersicum L.) in Hawzen, Ethiopia

2020 ◽  
Author(s):  
Hilay Gebremedhin ◽  
Mehari Gebremicheal ◽  
Gebregwergis Fitsum
Keyword(s):  
Solanum Lycopersicum ◽  
Soil Analysis ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Index Number ◽  
Area Index ◽  
Solanum Lycopersicum L ◽  
Yield And Quality ◽  
Main Effects

Abstract Background More than 50% of the soil in Tigray is deficient in macro essential nutrients. Hence, poor soil chemical fertility is a major challenges for low production of crops like tomato in Hawzen. The aim of this work was to study the effects of N and P rates on the yield and quality of tomato (Solanum lycopersicum L.) in Hawzen, Tigray, Ethiopia. Methods Four different rates of N (0, 69, 138 and 207 kg Nha− 1) and P (0, 46, 69 & 92 kg Pha− 1) were laid out in a randomized complete block design with three replications. Soil analysis were done before executing of the experiment. Data were collected on yield, and fruit quality of tomato. Results The results revealed that plant height, leaf area index, number of primary branches per plant, number of clusters per plant, number of flower clusters, number of fruit per clusters and fruit set were significantly influenced by the main effects of N and P rates. The interaction of N and P rates only had significant effects on marketable, total fruit yield, mean fruit weight, and fruit length. Compared to control, application of 138 kg Nha− 1 and 69 kg Pha− 1 increased mean fruit weight, marketable fruit weight and total fruit yield by 35.9%, 70.5% and 68.4%, respectively. Likewise, the main effects of N and P rates were remarkable on total soluble solids, total sugar, titratable acidity, ascorbic acid, lycopene content, and protein. A significant influence on the P content of tomato was detected due to varied rates of P. fruit N concentration was significantly influenced by rates of N only. Conclusion Application of N and P at rates of 138 and 69 kgha− 1, respectively, showed the highest values in most yield and quality measurements and particularly increased yield by 70.5% as compared to the nil fertilizer application. Therefore, 138 kg Nha− 1 and 69 kg Pha− 1 can be used by producers for better yield and quality of tomato in the area.

scholarly journals Effect of Plant density and Fertilizer Application Rates on Growth, Fruit Yield and Quality of Tomato (Solanum lycopersicum L.) in Greenhouse Condition

2021 ◽  
pp. 22-31
Author(s):  
Mai Hai Chau ◽  
Ngo Xuan Chinh
Keyword(s):  
Solanum Lycopersicum ◽  
Plant Density ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Fertilizer Rate ◽  
Tomato Cultivar ◽  
Solanum Lycopersicum L ◽  
Yield And Quality ◽  
Fruit Setting ◽  
Marketable Fruit

Plant density and fertilization are key practices for improving the fruit quality and yield of vegetables grown in greenhouses. The experiment was performed to investigate the effects of density and fertilization on the fruit yield and quality, economic efficiency of Solanum lycopersicum L. at Duc Trong district of Lam Dong province. The density (50,000; 33,000; 25.000 plants ha-1) and the fertilizer rates (240N – 100P2O5 – 275K2O; 300N – 125P2O5 – 344K2O; 360N – 150P2O5 – 413K2O kg and 420N – 175P2O5 – 482K2O kg ha-1) were studied in a completely randomised split plot design with three blocks. The fertilizer rate (420N – 175P2O5 – 482K2O kg ha-1) was produced the highest height (562.39 cm), fruit setting rate (69.87%), number of fruit per plant (95.65 fruits), average fruit weight (106.37 g), fruit yield (441.11 tons ha-1) and marketable fruit yield (204.31 tons ha-1). The density (25,000 plants ha-1) gave the highest fruit setting rate (75.35%), number of fruit per plant (94.84 fruits), average fruit weight (113.24 g), individual fruit yield (10.02 kg per plant) and fruit yield (501.17 tons ha-1). The combination of density (25,000 plants ha-1) and fertilizer rate (420N – 175P2O5 – 482K2O kg ha-1) have the highest fruit yield (613.5 tons ha-1), marketable fruit yield (223.91 tons ha-1) and rate of return (2.44). In addition, this combination was the best density and fertilizer level management strategy for greenhouse-grown Lahay 334 tomato cultivar in Lam Dong province, Vietnam.

Impact of red and blue nets on physiological and morphological traits, fruit yield and quality of tomato (Solanum lycopersicum Mill.)

2020 ◽  
Vol 264 ◽  
pp. 109185 ◽  
Author(s):  
Aye Aye Thwe ◽  
Poonpipope Kasemsap ◽  
Gilles Vercambre ◽  
Frédéric Gay ◽  
Jessada Phattaralerphong ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Morphological Traits ◽  
Fruit Yield ◽  
Yield And Quality
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