Evaluation of crop water status of melon plants in tropical semi-arid climate using thermal imaging

Aragão, Márcio Facundo; Neto, Luís G. Pinheiro; Viana, Thales Vinícius de Araújo; Juárez, Juan Manzano; Lacerda, Claudivan Feitosa de; Costa, James do N.; Lima, Joílson Silva; Azevedo, Benito Moreira de

doi:10.1590/1807-1929/agriambi.v27n6p447-456

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…Biweekly measurements of Ψ Leaf and SMO in melon plants conducted by Aragão et al ( 2023)representing one measurement per phenological phase in the Brazilian semiarid region -demonstrated that the greatest differences between irrigation regimes are observed at 45 DAT, and these differences are more pronounced in soils without dead plant cover, which is consistent with the data presented here. However, when comparing the Ψ Leaf averages obtained here with those observed by Aragão et al (2023), it is noted that the excess irrigation beyond what is required by the crop tends to yield similar results, with a smaller difference (approximately − 0.02 MPa) compared to water de cit (-0.24 MPa), where the difference between de cit treatments in the studies was 10% of ETc. Similarities are observed regarding SMO, thus agreeing with Buckley (2019) regarding the relationship between Ψ Leaf gradients in the soilplant system.…”

Section: Resultssupporting

confidence: 75%

Irrigation Management Strategies and Monitoring of Water Status through Infrared Thermography in Melon Production

Costa,

Gomes,

Aragão

et al. 2023

Preprint

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This study aimed to evaluate, through infrared thermography, the water status of melon crop during the fruiting phase and the productivity relationships resulting from fixed deficit irrigation (FDI) and regulated deficit irrigation (RDI) in two cultivation cycles. Nine irrigation treatments based on ETc (%) were applied, comprising four FDI treatments (T1- 125%; T2-100%; T3-75%; T4-50% throughout the cycle) and five RDI treatments (T5, T6, T7, T8, and T9) with replacements varying by 25% of ETc at stages I, II, III, and IV of the melon crop. Data on plant temperature (Tc) and air temperature (Ta) at 8:00, 12:00, and 16:00 h, leaf water potential (ΨF), gas exchange (gs and E), and soil moisture (SMO) were obtained at 45 days after transplanting in cycle I and at 42 days after transplanting in cycle II. Using the Tc and Ta data, thermographic indices ∆Tcanopy−air, CWSI, and IG were calculated. After harvesting, productivity and water use efficiency (WUE) were determined. Gas exchange did not strongly correlate with water replacement for FDI treatments in both conducted cycles. The ∆Tcanopy−air, CWSI, and IG indices significantly correlated with ΨF and SMO at the monitored times; however, 12:00 h was found to be the most suitable time for thermographic monitoring. Productivity and WUE were higher in the RDI treatments, with the T6 treatment (50% in phase I, 100% in phase II, and 75% in phases III and IV) standing out. Correlations between WUE and thermographic indices showed better results for RDI in cycle I, with both indices at 8 h and 12 h. In cycle II, better correlations were presented by FDI at both monitored.

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Section: Resultssupporting

confidence: 75%

Irrigation Management Strategies and Monitoring of Water Status through Infrared Thermography in Melon Production

Costa,

Gomes,

Aragão

et al. 2023

Preprint

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“…Melon (Cucumis melo L.) is a summer season crop commonly grown for fresh ripe fruit and baby fruit is widely used for pickles in Türkiye (Vural et al, 2000). It is an important alternative crop in arid and semi-arid regions in open-field, where climatic conditions are characterized by drought and low annual rainfall (Aragão et al, 2023). It can be grown under rainfed conditions without irrigation in crop rotation with wheat, barley, and sunflower, while late spring and early autumn frosts limit the vegetation period of melon.…”

Section: Introductionmentioning

confidence: 99%

Combined Effects of Drought and Low Temperature on Germination and Seedling Growth of Melon Cultivars

KAYA

2024

Black Sea Journal of Agriculture

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The aim of the study was to determine the effects of drought (0.0, -2.0, -4.0, and -6.0 bar PEG 6000) and low temperature (18°C) on the germination and early seedling growth of three melon cultivars (Kırkağaç 589, Hasanbey 1 and Toros Sarıbal). Germination percentage, mean germination time, germination index, root length, shoot length, fresh and dry weight of the seedling, and vigor index of the melon cultivars were investigated. The results showed significant effects of low temperature and drought stress on the germination and seedling growth of melon cultivars. As temperature decreased and drought increased, the germination percentage decreased, and mean germination time was delayed. Drought stress led to a decrease in germination percentage, index, and all investigated seedling growth parameters, while the response of melon cultivars to drought stress varied. Seedling growth was more affected by low temperature than germination. Low temperature decreased germination percentage from 87.2% to 63.7% and seedling fresh weight from 140 mg/plant to 64 mg/plant. Each increase in drought levels resulted in a decrease in germination and seedling growth parameters of melon cultivars. Any seedling growth was not observed in Hasanbey 1 and Toros Sarıbal at -6.0 bar at 18°C. Melon cultivars showed different levels of tolerance to drought stress, while they could maintain it up to -4.0 bar. It was concluded that Kırkağaç 589 germinated and grew better under drought stress at both optimum and low temperatures.

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Alterations of physical-chemical attributes of a vertisol in a melon production area

Basílio,

Gurgel,

Travassos

et al. 2023

Rev. Caatinga

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Water quality and soil quality are of great importance for crop yield in the context of small-scale irrigated agriculture in the Northeast region of Brazil. In this respect, this study aimed to determine changes in soil fertility and resistance to root penetration caused by fertigated cropping, as compared to soil under native forest. In each area, a non-regular sampling grid was established, which consisted of 87 georeferenced points in the melon cultivated area and 8 points in the native forest area. At these points, samples were obtained at depths of 0-10, 10-20, 20-30 and 30-40 cm. The determinations performed included soil physical, chemical and mechanical attributes. Multivariate analysis techniques and geostatistical procedures were used to analyze and interpret the data. The cultivation of the Vertisol altered all the variables studied, compared to the area under native forest. Soil decompaction and increase in phosphorus content were positive effects, while organic matter decomposition and reductions in potassium, calcium, magnesium and cation exchange capacity were negative effects. Sodium content and porosity parameters were prominent factors in soil alterations.

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Evaluation of crop water status of melon plants in tropical semi-arid climate using thermal imaging

Cited by 3 publications

References 27 publications

Irrigation Management Strategies and Monitoring of Water Status through Infrared Thermography in Melon Production

Irrigation Management Strategies and Monitoring of Water Status through Infrared Thermography in Melon Production

Combined Effects of Drought and Low Temperature on Germination and Seedling Growth of Melon Cultivars

Alterations of physical-chemical attributes of a vertisol in a melon production area

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