scholarly journals Effect of drip irrigation regime on plant height and stem girth of tomato (Lycopersicon esculentum Mill)

2020 ◽  
Vol 445 ◽  
pp. 012016
Author(s):  
A M Oke ◽  
A P Osilaechuu ◽  
T E Aremu ◽  
J O Ojediran
Keyword(s):  
Lycopersicon Esculentum ◽  
Plant Height ◽  
Drip Irrigation ◽  
Irrigation Regime ◽  
Lycopersicon Esculentum Mill

The effects of ultraviolet-B radiation and carbon dioxide on growth and photosynthesis of tomato

1997 ◽  
Vol 75 (2) ◽  
pp. 213-219 ◽  
Author(s):  
Xiuming Hao ◽  
Beverley A. Hale ◽  
Douglas P. Ormrod
Keyword(s):  
Lycopersicon Esculentum ◽  
Leaf Area ◽  
Plant Height ◽  
Net Photosynthesis ◽  
Dry Weight ◽  
Ultraviolet B ◽  
Radiation Level ◽  
Ultraviolet B Radiation ◽  
Lycopersicon Esculentum Mill ◽  
Uv Absorbing Compounds

Tomato (Lycopersicon esculentum Mill.) plants were exposed, in controlled environments with 2.7 kJ/(m2 ∙ day) background ultraviolet-B (UV-B) radiation from fluorescent and incandescent lamps, to ambient (380 μL ∙ L−1) or elevated (600 μL−1) CO2 combined with a total of 7.2 or 13.1 kJ/(m2 ∙ day) UV-B radiation to determine effects on growth and photosynthesis. Ten consecutive days of exposure to the higher level of UV-B significantly reduced total and stem dry weight, leaf area, and plant height compared with the lower level. Only leaf area and plant height were significantly reduced after 19 consecutive days of exposure. To investigate whether plants recover from UV-B damage, the UV-B exposures were halted for 3 days after 19 days of UV-B exposure and then restarted for a further 2 days. The largest reduction in plant growth was found after 3 days with no UV-B followed by 2 days of the higher level of UV-B. Plants did not recover from UV-B damage during the 3 days with background UV-B. Significant CO2xUV-B interactions were detected on stem dry weight after 10 consecutive days of the higher level of UV-B and on total dry weight, leaf dry weight, stem dry weight, and plant height after 3 days with no UV-B followed by 2 days of the higher level of UV-B. The higher dose of enhanced UV-B resulted in more severe damage at 600 μL ∙ L−1 CO2, than at ambient CO2. The higher level of UV-B did not affect the leaf net photosynthesis rate on a leaf area basis, although this UV-B level may have inhibited tomato growth through reducing the photosynthetic area. UV-absorbing compounds in leaves in the highest UV-B radiation level for 19 days were greater than for leaves with the lower dose. These UV-absorbing compounds in the higher UV-B dose diminished more than in the lower dose plants during the 3 days without UV-B. The UV-absorbing compounds maintained by plants exposed to the highest level of UV-B radiation may have protected plants from UV-B damage, particularly between 10 and 19 consecutive days of exposure. Key words: CO2, growth, Lycopersicon esculentum Mill., photosynthesis, tomato, ultraviolet-B radiation (UV-B), UV-absorbing compounds.

scholarly journals Effects of Individual and Combined Application of Organic Plus NPK (15:15:15) Fertilizers on the Growth Parameters of Tomato (Lycopersicon esculentum. Mill)

2019 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Lycopersicon Esculentum ◽  
Leaf Area ◽  
Plant Height ◽  
Root Length ◽  
Growth Parameters ◽  
Organic Fertilizer ◽  
Loamy Sand ◽  
Lycopersicon Esculentum Mill ◽  
Combined Application ◽  
Number Of Leaves

Research was carried out to evaluate the effects of individual and combined application of organic, NPK (15:15:15), organic plus NPK (15:15:15), fertilizers on the growth parameters of tomato (Lycopersicon esculentum. Mill) in the greenhouse condition of The Oke – Ogun Polytechnic, Saki (Derived savannah), Oyo State, Nigeria. Study was conducted in complete randomized design (CRD). Treatments were at four levels and replicated three times. The soil used was loamy sand. Results showed that the highest average number of leaves (140), number of roots (136), root girth (19.3 cm) and root length (40.8 cm) were achieved in organic plus NPK, highest average plant height (78.4 cm) and stem girth (7.6 cm) was achieved at 50 gm level of NPK (15:15:15) fertilizer treatment, while the highest average leaf area (45.6 cm2) was achieved at 50 gm level of organic fertilizer, the control values were far reduced compared to other levels of treatments. The analysis of variance indicated that organic fertilizer, organic plus NPK (15:15:15) fertilizers had significant (p ≤ 0.05) effects on number of roots, plant height, stem girth, root girth, leaf area, root length and number of leaves. NPK (15:15:15) fertilizer had significant (p ≤ 0.05) effect on number of leaves, plant height and leaf area and no significant (p ≤ 0.05) effects on number of roots, stem girth, root girth and root length, however, 50 gm level of treatment of organic fertilizer had distinct improved significant (p ≤ 0.05) effects on four (4) growth parameters; number of leaves, stem girth, root girth and root length when compared with other levels of treatments for NPK (15:15:15), organic plus NPK (15:15:15) fertilizers, therefore, 50 gm level of organic fertilizer could be applied for better production of Tomato (Lycopersicon esculentum. Mill) in a loamy sand soil.

scholarly journals Production of seven varieties of tomato (Lycopersicon esculentum Mill.) pruned to one and two stems under greenhouse

2019 ◽  
pp. 19-24
Author(s):  
Everardo Vargas-Espinoza ◽  
Marina Gaytán-Ruelas ◽  
Alberto Calderón-Ruiz ◽  
Verónica De Jesús Morales Félix
Keyword(s):  
Lycopersicon Esculentum ◽  
Plant Height ◽  
Block Design ◽  
Fruit Weight ◽  
Lycopersicon Esculentum Mill ◽  
Randomized Complete Block Design ◽  
The One ◽  
Technological University

The experiment was conducted from May to August 2018 at the Technological University of the Southwest of Guanajuato (UTSOE) in a randomized complete block design with three repetitions, in greenhouse 1 of 700 m2 of the Sustainable and Protected Agriculture Career; with the purpose of evaluating the effect of pruning at one and two stems per plant, on yield, fruit weight and plant variables in seven varieties of saladette tomato produced under greenhouse and in hydroponics. The varieties evaluated were: Natalie, USATX 12227, USATX 9934, Juan Pablo, USATX 24019, USATX 16117, USATX 15538, all established at a density of 31,250 plants or stems per hectare. Pruning at two stems per plant produced the highest yield in the USATX 16117, USATX 9934 and Natalie varieties, producing more than 2.3 kg per plant after six weeks of harvest. For the fruit weight, the USATX 9934 variety with two stems, was the one that produced fruits of greater caliber, being one of the three varieties with the highest yield. For the plant height, the USATX 24019 variety with one stem was the one with the highest height three months after the transplant.

scholarly journals The Effect of Phosphate Fertilizer Starter Solution on Growth of Two Tomato(Lycopersicon Esculentum Mill)Varieties in Sandy Soil

2018 ◽  
Vol 7 (1) ◽  
pp. 137-147
Author(s):  
Mohsen A. Desher
Keyword(s):  
Lycopersicon Esculentum ◽  
Plant Height ◽  
Dry Weight ◽  
Phosphate Fertilizer ◽  
P Uptake ◽  
Control Treatment ◽  
Root Dry Weight ◽  
Lycopersicon Esculentum Mill ◽  
P Concentration ◽  
Number Of Leaves

A field experiment is conducted during the growing season of 2012 - 2013 on a sandy loam soil at Al-Berjsia researches station / Ministry of Agriculture , Basrah province , south of Iraq . The aim of study is to determine the effect of phosphate fertilizer starter solution  on the growth of Two Tomato( Lycopersicon Esculentum Mill ) varieties ( Hotuf and Speedy ) and P-uptake . Phosphate fertilizer as consternated super Phosphate (CSP)is applied at level 120 Kg P ha-1 . An equivalent of 0 , 0.05 , 0.10 and 0.20 % of Phosphor level are added as starter solution either at transplanting time or three days after transplanting . The remaining of Phosphorus level was applied to soil at two doses . Percentage of dead seedling , plant height , number of leaves plant-1 , number of branchesplant-1 , number of flower clusters plant-1 , shoot and root dry weight , P concentration in leaves and P-uptake by plant are investigated . The results showthat addition of CSP starter solution significantly decreases the percentage of dead seedling of compared with the control treatment. Plants received Phosphor starter solution show a higher growth parameters and P-uptake as compared with control treatment plants . Increasing the level of Phosphor starter solution from 0 to 0.20 % decreases percentage of dead seedling by 90.1 % and increased plant height by 19.23 % , number of leaves by 33 % , number of branches by 23.52 % , number of flower clusters by 69.24 % , shoot dry weight by 183.1 % , root dry weight by 175 % , P concentration by 60.8 % and P-uptake by 309.7% . Comparing between two tomato varieties ,results show thatSpeedy tomato varietyis more tolerant to transplanting and gives a higher growth and P-uptake ,the results show also tomato seedlings received starter solutions at three days after transplanting time appear more resistant to soil shuck of transplanting than those plants received starter solution at transplanting.  

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