Optimizing Tomato Productivity and Water Use Efficiency Using Water Regimes, Plant Density and Row Spacing Under Arid Land Conditions

Ismail, Saleh M.; Mousa, Magdi A. A.

doi:10.1002/ird.1868

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…In contrast with the present study, other results indicated that onset and 50% flowering were significantly earlier in wider spacing (Ismail and Mousa 2014).…”

Section: Discussioncontrasting

confidence: 99%

Optimizing Hydroponic Management Practices for Organically Grown Greenhouse Tomato under Abiotic Stress Conditions

Dash,

Guo,

Leskovar

2023

horts

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Hot and humid conditions create challenges for tomato production under a controlled environment. Low tomato productivity is related to the lack of stress tolerance of existing cultivars and their ability to maximize fruit set and yield. The aim of this study was to evaluate the effectiveness of three management strategies, cultivar selection, grafting, and plant density, for the growth and production efficiency of organically grown hydroponic tomatoes under adverse environmental conditions in Qatar. The experiment used a split-split plot design with ‘Velocity F1’ and ‘Sigma F1’ as the main plot treatments and a factorial arrangement of grafting combinations and planting densities (3.5 and 5.5 plants/m2) as subplots. Tomato cultivar Velocity F1 grafted on Maxifort F1 resulted in greater vegetative growth and improved phenological attributes than nongrafted Velocity F1. Grafted ‘Velocity F1’ plants grown at 3.5 plants/m2 had an increase in leaf photosynthetic rates (18%), less transpiration loss (16%), and less electrolyte leakage (15%) while maintaining stomatal conductance and intercellular CO2 concentrations. At 9 weeks after transplanting, canopy growth was higher (24%) and flowering occurred earlier (3 days) with grafted ‘Velocity F1’ transplants than with nongrafted transplants. Higher fruit sets (20%), pollen viability (22%), and fewer flower drops (17%) were also observed for grafted ‘Velocity F1’ transplants than for nongrafted transplants. Marketable fruit yields were higher (26%) with grafted ‘Velocity F1’ grown at 3.5 plants/m2 than with nongrafted ‘Velocity F1’. Both grafted ‘Velocity F1’ and ‘Sigma F1’ fruits retained acceptable fruit color (L*, a*, b*, C*, °h), firmness, °Brix, titratable acidity, weight, and prolonged shelf life by 4 additional days than nongrafted ones. We conclude that grafted tomato ‘Velocity F1’ grown at a plant density of 3.5 plants/m2 was the best management strategy for enhancing seedlings quality, plant growth, and postharvest quality and alleviating abiotic stresses under this protected environment and hydroponic system.

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“…In contrast with the present study, other results indicated that onset and 50% flowering were significantly earlier in wider spacing (Ismail and Mousa 2014).…”

Section: Discussioncontrasting

confidence: 99%

Optimizing Hydroponic Management Practices for Organically Grown Greenhouse Tomato under Abiotic Stress Conditions

Dash,

Guo,

Leskovar

2023

horts

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“…The estimates of WUE with the application of 50% of the irrigation depth in this study (31.0 and 24.1 kg m -3 ) where higher than the values reported by Ismail and Mousa (2014), which observed WUE values of 19.2 kg m -3 . However, the results found in the present study are similar to the ones obtained by Marino et al (2014) and Al-harbi et al (2015), which reported WUE values of 35.1 and 31.4 kg m -3 , respectively.…”

Section: The Effect Of the Irrigation Depths On The Water Use Efficiencycontrasting

confidence: 90%

Establishing Irrigation Levels Targeting Higher Content of Lycopene and Water Use Efficiency in Tomato

Delazari¹,

Gomes²,

Laurindo³

et al. 2018

JAS

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The demand for healthier foods has been increasing worldwide. Associated with this trend, it is crucial to optimize the use of inputs for ensuring the sustainability of production. The fruits of tomato are important sources of minerals, vitamins, and especially of carotenoids such as the lycopene. This carotenoid plays biological activities that are crucial such as the antioxidant function, besides its proven action in the prevention of cancers and degenerative diseases. The irrigation seems to play a fundamental role in the biosynthesis of lycopene. Thus, it is fundamental to establish levels of irrigation that might provide higher content of lycopene, productivity, and efficiency in the use of water in the production of tomato. The objective of this study was to establish adequate levels of irrigation for the obtainment of higher content of lycopene, productivity of fruits, and higher efficiency in the use of water in the production of salad tomato. For this, two experiments were carried in different cropping seasons. The treatments consisted of the application of four irrigation depths, corresponding to 50, 100, 150 and 200% of the tomato evapotranspiration. The estimates of maximum productivity corresponded to the application of the irrigation depth of 112% ETc, while the maximum content of lycopene and the higher efficiency in the use of water corresponded to 50% ETc. The irrigation depth of 100% ETc is recommended as the best irrigation depth to obtain higher content of lycopene, productivity, and efficiency in the use of water jointly.

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“…The irrigation water use efficiency (IWUE kg mm -1 ha -1 ) was estimated by dividing yield by depth of water applied in mm -1 (Ismail and Magdi, 2014). T1 T2 T3 T4 T5 Feb 22 22 22 22 22 22 Feb 24 24 24 24 24 24 Feb 25 10 25 25 10 10 Mar 25 10 25 25 10 10 Mar 25 10 25 25 10 10 Mar 27 27 10 27 10 27 Apr 28 28 10 28 10 28 Apr 30 30 10 30 10 30 Apr 32 32 32 10 32 10 May 35 35 35 10 35 Experimental design and data analysis: The field experiment was laid out in split plot design and the treatments were distributed over plots following the randomized complete block design (RCBD) using 3 replicates.…”

Section: Measurementsmentioning

confidence: 99%

Growth and yield of cowpea (Vigna unguiculata L.) cultivars under water Deficit at different growth stages

Mousa

Qurashi

2017

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A field experiment was conducted in 2013 and 2014 at the Agriculture Experimental Station of King Abdulaziz University to study the effects of water deficit treatments at different growth stages on growth, yield and IWUE on cowpea cultivars. Four water deficit treatments were applied T0 (no water deficit), T1 (at vegetative stage), T2 (at flowering and pod setting), T3 (at pod filling), T4 (at vegetative and flowering) and T5 (at flowering and pod filling). The cultivars 'Balady' under water deficit T 1 , T 3 and T 4 and 'Cream7'under T 1 and T 2 produced the highest yield component parameters except number of pods/plant. The highest yield of dry seeds kg/ha was produced by the cultivars 'Cream7' under water deficit T 1 and T 3 and 'Balady' under T 2 . 'Cream7' and 'Balady' revealed the highest irrigation water use efficiency (IWUE) under water deficit T 1 , T 2 and T 4 . High seed yield of 'Balady and 'Cream7' can be obtained by applying water deficit at vegetative stage (T1).

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Optimizing Tomato Productivity and Water Use Efficiency Using Water Regimes, Plant Density and Row Spacing Under Arid Land Conditions

Cited by 7 publications

References 16 publications

Optimizing Hydroponic Management Practices for Organically Grown Greenhouse Tomato under Abiotic Stress Conditions

Optimizing Hydroponic Management Practices for Organically Grown Greenhouse Tomato under Abiotic Stress Conditions

Establishing Irrigation Levels Targeting Higher Content of Lycopene and Water Use Efficiency in Tomato

Growth and yield of cowpea (Vigna unguiculata L.) cultivars under water Deficit at different growth stages

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