Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Ayankojo, Ibukun T.; Morgan, Kelly T.; Kadyampakeni, Davie M.; Liu, Guodong D.

doi:10.21273/hortsci15177-20

Cited by 15 publications

(8 citation statements)

References 33 publications

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“…The root-to-shoot ratio exhibits a different trend because of the negative correlation between root growth and soil moisture level up to a certain point, after which all plant parts, including shoots and roots, fall apart. These findings are in line with those of Chai et al (2016); Singh and Kamal (2012); Ayankojo et al (2020);Al-Selwey et al (2021); Alhashimi et al (2023).…”

Section: Tomato Plants' Vegetative Measurementssupporting

confidence: 90%

Integrating soil mulching and subsurface irrigation for optimizing deficit irrigation effectiveness as a water-rationing strategy in tomato production

ALKHATEEB,

ALI,

ABDOU

et al. 2024

Not Bot Horti Agrobo

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Irrigated agriculture from now on should be implemented under water scarcity. Hence, this research was designed to determine the optimal interaction between irrigation water-rationing strategy (deficit irrigation), irrigation techniques, and soil mulching to improve water use efficiency and maintaining plant performance as well as yield productivity of tomatoes. The experiment was set up during the 2020-2021 and 2021-2022 growing seasons. Three factors were studied: two drip irrigation techniques, surface (SI) and subsurface (SSI) irrigation, and two irrigation rates, 100% ETc for full irrigation (FI) and 60% ETc for deficit-irrigation (DI) along with three treatments of soil mulching, bare soil (BS), organic mulch (OrM) and black polyethylene mulch (BPE). The results demonstrated that applying the absolute regular DI regime significantly reduced vegetative growth, fruit yield, and yield component along with water productivity. Also, it reduced the physiological function measures, and nutrient content of the tomato leaf. Meanwhile, applying the DI regime via the SSI technique and integrated with BPE soil mulching proved the best optimization of the DI negative effect followed by applying the DI regime through either SSI or SI technique combined with OrM or BPE soil mulching, respectively. As a result, it is advisable to use the integration of DI via the SSI accompanied by BPE soil mulching since this is considered a good method for conserving irrigation water from being lost by both evaporation and seepage out of the root zone improving water use efficiency without significantly reducing tomato yield.

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Section: Tomato Plants' Vegetative Measurementssupporting

confidence: 90%

Integrating soil mulching and subsurface irrigation for optimizing deficit irrigation effectiveness as a water-rationing strategy in tomato production

ALKHATEEB,

ALI,

ABDOU

et al. 2024

Not Bot Horti Agrobo

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“…Here, soil physicochemical properties were altered after fumigation of apple replant soil. Ammonium nitrogen and nitrate nitrogen are the main forms of nitrogen in soil (Ayankojo et al, 2020). These nitrogen forms can be transformed by nitri cation and denitri cation, and nitri cation is one of the most important processes of soil nitrogen transformation.…”

Section: Discussionmentioning

confidence: 99%

An emerging chemical fumigant: two-sided effects of dazomet on soil microbial environment and plant response

Chen

Jiang

et al. 2021

Environ Sci Pollut Res

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Methyl bromide has been banned worldwide because it causes damage to the ozone layer and the environment. To nd a substitute for methyl bromide, the relationships among fumigation, plant growth, and the microbial community in replant soil require further study. We performed pot and eld experiments to investigate the effects of dazomet fumigation on soil properties and plant performance. Changes in soil microbial community structure and diversity were assessed using high-throughput sequencing, and plant physiological performance and soil physicochemical properties were also measured. Dazomet fumigation enhanced photosynthesis and promoted plant growth in replant soil; it altered soil physical and chemical properties and reduced soil enzyme activities, although these parameters gradually recovered over time. After dazomet fumigation, the dominant soil phyla changed, microbial diversity decreased signi cantly, the relative abundance of biocontrol bacteria such as Mortierella increased, and the relative abundance of pathogenic bacteria such as Fusarium decreased. Over the course of the experiment, the soil microbial ora changed dynamically, and soil enzyme activities and other physical and chemical properties also recovered to a certain extent. This result suggested that the effect of dazomet on soil microorganisms was temporary. However, fumigation also led to an increase in some resistant pathogens, such as Trichosporon, that affect soil function and health. Therefore, it is necessary to consider potential negative impacts of dazomet on the soil environment and to perform active environmental risk management in China. HighlightsFumigation of apple replant soil with dazomet renewed the soil microbial environment, improved soil physical and chemical properties, and dynamically restored soil ecological function.The activities of several soil enzymes and the relative abundance of bene cial microorganisms increased after dazomet fumigation. These changes were accompanied by higher rates of apple photosynthesis and growth.Fumigation reduced the content of pathogenic fungi such as Fusarium and increased the abundance of bene cial bacteria in the soil. However, it also increased the abundance of pathogenic bacteria such as Trichosporon, indicating that it is important to perform active environmental risk management.

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“…Likewise, Badr et al [44] found the same results in tomato plants cultivated with drip irrigation, with WUE being greater at the highest N rate. Similarly, in tomato plants cultivated in the open-field in fall, iWUE was lower (21.88 kg m −3 ) with 134 kg ha -1 N, due to a lower yield, compared with that occurring with application rates of 179-269 kg ha -1 N (29.83-32.85 kg m −3 ); nevertheless, in spring there were no significant differences [45]. Optimizing N supplies is very important in order to improve NUE.…”

Section: Discussionmentioning

confidence: 85%

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

2021

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The rapid development of greenhouse horticulture has brought about a dramatic increase in the nitrate pollution of aquifers. The optimization of nitrogen application is an important tool to minimize nitrogen losses. The objective of this research was to assess the effect of different fertigation strategies, based on the reduction of the nitrogen applied and the use of a percentage of NH4+ as a nitrogen source, on the decrease in the environmental impact caused by the traditional system, as well as to evaluate if this is compatible with a high fruit yield (considering quantity and quality). Lycopersicum esculentum Mill cv. Forteza plants were grown in a polyethylene greenhouse. Tomato yield and quality were evaluated, along with leachates, which were collected by means of rigid plastic lysimeters. The proposed strategies did not reduce fruit yield. However, the reduction in the nitrate applied caused firmness and °Brix decrease, together with a diminution in titratable acidity until 124 days after transplanting. Nevertheless, these effects were not observed with the replacement of some of the NO3− by NH4+. The reduction in fertilizer inputs significantly improved water and nutrient (N, P and K) use efficiency. The treatment with NH4+ improved K use efficiency, compared to the conventional treatment, but P decreased. The highest NO3− and K leaching was detected in the traditional treatment.

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Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Cited by 15 publications

References 33 publications

Integrating soil mulching and subsurface irrigation for optimizing deficit irrigation effectiveness as a water-rationing strategy in tomato production

Integrating soil mulching and subsurface irrigation for optimizing deficit irrigation effectiveness as a water-rationing strategy in tomato production

An emerging chemical fumigant: two-sided effects of dazomet on soil microbial environment and plant response

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

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