Broccoli Production With Regulated Deficit Irrigation at Different Phenological Stages

Terassi, Daniele de Souza; Rezende, Roberto; Wenneck, Gustavo Soares; Menezes, Cláudia Salim Lozano; Andrean, André Felipe Barion Alves; Vila, Vinícius Villa e; Silva, Lucas Henrique Maldonado da

doi:10.5539/jas.v13n12p71

Cited by 4 publications

(4 citation statements)

References 9 publications

(8 reference statements)

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“…Several studies have reported water reduction impacts in agricultural crops [4,14,[31][32][33][34]. In this study, the effect of Ascophyllum nodosum extract applications in different doses by fertigation during the tomato crop cycle (Tucaneiro hybrid) was evaluated under two different irrigation conditions (100% of ETc and 70% of ETc), in order to analyze the impacts on plant growth, fruit yield, physiological aspects and fruit quality.…”

Section: Discussionmentioning

confidence: 99%

“…Regulated deficit irrigation enhances some secondary metabolites such as carotenoids and phenolic components in plant tissues [6], affecting tomato nutritional value, mainly due to an antioxidant activity increase in tomatoes [9]. High total polyphenols from tomato under moderate water stress could resulted from a defense strategy against this abiotic stress [32]. Less water availability for tomato crop absorption could have resulted in a higher soluble solid concentration and consequently presented fruit with a better flavor ratio [14,41].…”

Section: Discussionmentioning

confidence: 99%

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Deficit Irrigation with Ascophyllum nodosum Extract Application as a Strategy to Increase Tomato Yield and Quality

Vila¹,

Marques²,

Rezende

et al. 2023

Agronomy

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Deficit irrigation is applied to several agricultural crops as a water-saving irrigation strategy. The tomato plant is sensitive to water stress; however, integration with biostimulant applications, based on seaweed extracts, could be a strategy for plants adapting to this abiotic condition. The objective of this study was to evaluate agronomic and quality aspects of tomato cultivated under deficit irrigation combined with Ascophyllum nodosum extract (ANE) application. The experiment was conducted using a completely randomized design with two water replacement levels, 70 and 100% of crop evapotranspiration (ETc), and five doses of ANE (0, 0.1, 0.2, 0.3 and 0.4%) applied via soil drench. The interaction between ANE and ETc was significant (p < 0.05) in terms of plant growth, physiological parameters, fruit yield, yield components and fruit quality. Results indicated that when the tomato plant is under deficit irrigation, a higher ANE dose is required to achieve better development when compared to the 100% ETc condition, where the dose is lower. Under deficit irrigation, the largest fruit yield was obtained with 0.3 and 0.4% ANE, and with 100% ETc, the largest fruit yield was obtained with 0.2% ANE. ANE applications were also effective in increasing plant height, stem diameter, plant biomass, leaf area, chlorophyll and relative water content. In addition, tomato quality was also favored under deficit irrigation and seaweed extract application. We conclude that ANE applications attenuate water deficit effects in tomato plants and provide a strategy to ameliorate tomato yield, tomato quality and water use in agriculture.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Deficit Irrigation with Ascophyllum nodosum Extract Application as a Strategy to Increase Tomato Yield and Quality

Vila¹,

Marques²,

Rezende

et al. 2023

Agronomy

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“…Deficit irrigation strategy is an agronomic approach for improving water-use efficiency and water management in irrigated agriculture [1]. This strategy consists of performing irrigation with an amount of water below the amount demanded by the crops, which may be during certain periods of growth, such as initial stages or low water demand [2], or even throughout the entire cycle [3]. The main advantage of deficit irrigation is water savings, especially in regions with water scarcity or where water is a limited resource [4].…”

Section: Introductionmentioning

confidence: 99%

Deficit Irrigation with Silicon Application as Strategy to Increase Yield, Photosynthesis and Water Productivity in Lettuce Crops

Villa e Vila,

Marques,

Gomes

et al. 2024

Plants

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In regions where water is a limited resource, lettuce production can be challenging. To address this, water management strategies like deficit irrigation are used to improve water-use efficiency in agriculture. Associating this strategy with silicon (Si) application could help maintain adequate levels of agricultural production even with limited water availability. Two lettuce crop cycles were conducted in a completely randomized design, with a factorial scheme (2 × 3), with three irrigation levels (60%, 80% and 100%) of crop evapotranspiration (ETc), and with and without Si application. To explore their combined effects, morphological, productive, physiological and nutritional parameters were evaluated in the crops. The results showed that deficit irrigation and Si application had a positive interaction: lettuce yield of the treatment with 80% ETc + Si was statistically similar to 100% ETc without Si in the first cycle, and the treatment with 60% ETc + Si was similar to 100% ETc without Si in the second cycle. Photosynthetic rate, stomatal conductance, intercellular CO2 concentration, transpiration rate and total chlorophyll content increased under water-stress conditions with Si application; in the first cycle, the treatment with 80% ETc + Si increased by 30.1%, 31.3%, 7.8%, 28.46% and 50.3% compared to the same treatment without Si, respectively. Si application in conditions of water deficit was also beneficial to obtain a cooler canopy temperature and leaves with higher relative water content. In conclusion, we found that Si applications attenuate water deficit effects and provide a strategy to ameliorate the yield and water productivity in lettuce crops, contributing to more sustainable practices in agriculture.

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“…Various techniques and management tools can be employed to alleviate the impacts of water stress on plants. These encompass controlled water restriction during less sensitive stages (Terassi et al, 2021), the interval between water replacements (Santos et al, 2021), nutritional management (Saath et al, 2022), and the application of beneficial elements (Lozano et al, 2018;Hachmann et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Performance of tomato grown under different water replacement depths and silicon application forms

Wenneck,

Saath,

Rezende

et al. 2024

Sem. Ci. Agr.

Self Cite

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Water management has a direct impact on plant development, and under deficit conditions, it often results in reduced yields. Silicon (Si), however, has the potential to alleviate stress and enhance plant performance under unfavorable conditions. This study aimed to analyze the performance of tomato plants cultivated under different water replacement depths and forms of silicon application. The experiment was laid out in a completely randomized design with a 2 × 4 factorial arrangement represented by two water replacement depths (60% and 100% of crop evapotranspiration - ETc) and four forms of silicon application (without application, soil application - full dose, soil application - split dose, and foliar applications). Four replications were used. The plants were cultivated in a protected environment using drip irrigation for water replacement, and silicon oxide served as the source of the element. The analyzed parameters included daily evapotranspiration, leaf spectral reflectance, mass accumulation (root, stem, and leaf), yield indices (fruit weight, plant yield, and defective fruits), water productivity, and post-harvest fruit weight loss. The imposition of water deficit (60% of ETc) in tomato leads to reduced crop development and yield, with the effects partially mitigated by the application of silicon. Conversely, under conditions of adequate water replacement (100% of ETc), silicon application contributes to increased development and yield of tomato. The application of silicon in the soil, whether in a full or split dose, demonstrates a more favorable response in vegetative indices and yield for tomato.

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Broccoli Production With Regulated Deficit Irrigation at Different Phenological Stages

Cited by 4 publications

References 9 publications

Deficit Irrigation with Ascophyllum nodosum Extract Application as a Strategy to Increase Tomato Yield and Quality

Deficit Irrigation with Ascophyllum nodosum Extract Application as a Strategy to Increase Tomato Yield and Quality

Deficit Irrigation with Silicon Application as Strategy to Increase Yield, Photosynthesis and Water Productivity in Lettuce Crops

Performance of tomato grown under different water replacement depths and silicon application forms

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