Efeito Da Fração De Área Molhada Por Gotejamento Na Cultura Da Melancia

Barros, Allan Cunha; Silva, Fernanda Ferreira da; Araújo, Paulo Henrique; Vellame, Lucas Melo; Pinheiro, Thyago Da Silva; Neto, Antônio Lucrécio dos Santos

doi:10.15809/irriga.2019v1n1p25-30

Cited by 1 publication

(3 citation statements)

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“…In a scenario similar to that of the present research, Barros et al [6] found that a range of 12 to 22% of wetted areas did not result in physiological damage to watermelon or a reduction in agricultural productivity in Arapiraca, Alagoas. These findings again highlight the potential tolerance of watermelon varieties to water scarcity, as tested under local conditions.…”

Section: Discussionsupporting

confidence: 85%

“…The irrigation system adopted was drip irrigation. The emitters were spaced 0.2 m. The irrigation management was carried out by Barros et al [6], by the ETo estimated daily by Hargreaves and Samani [15] (Equation ( 1)). The crop evapotranspiration was estimated by Equation (2) using the coefficients proposed by Ferreira et al [16], as shown in Table 2.…”

Section: Agricultural Managementmentioning

confidence: 99%

“…In this regard, the adoption of irrigation methods such as localized drip systems, which form irrigated strips and ensure a large wetted area near crop plants, is recommended in regions with water scarcity and high evapotranspiration demand [5]. However, researchers have observed that this premise is not always valid, as watermelon plants grown in areas with lower water availability may exhibit agricultural productivity levels comparable to those cultivated in areas with higher soil moisture [6]. This demonstrates that watermelon can tolerate reduced water availability.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Photosynthetic Efficiency on Watermelon Cultivation in the Face of Drought

Silva,

Barros,

Silva

et al. 2024

Agronomy

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Water availability is a limiting factor for plant production, especially in Brazilian semi-arid regions. The main aim of the study was to investigate the physiological effects of drought during the fruiting stage of watermelon cultivation. A completely randomized block design with four replications and six treatments varied by the number of lateral drip tapes (1 or 2) and the duration of drought stress (0, 4, and 8 days) was used. The following parameters were evaluated: relative chlorophyll content, relative leaf water content, electrolyte leakage, CO2 assimilation (A), stomatal conductance (gs), internal CO2 concentration, leaf temperature, transpiration (E), water use efficiency (WUE), carboxylation efficiency (CE), yield, thickness, diameter, length, and fruit °brix, at 4 and 8 days of drought. Drought negatively affected photosynthesis, particularly in treatments with a single dripper and 4 days of drought, resulting in reductions of up to 60% in A, 68% in gs, 44% in E, 58% in WUE, and 59% in CE, but did not have a significant effect on watermelon yield after 4 or 8 days of irrigation. It was concluded that drought influences the physiological responses of watermelon plants, mainly in reducing photosynthesis, but does not drastically affect fruit productivity in short periods of stress.

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Section: Discussionsupporting

confidence: 85%

Section: Agricultural Managementmentioning

confidence: 99%