Contribution of Soil Attributes and Morphological Variables to Yield of Irrigated Garlic

Oliveira, Job Teixeira de; Oliveira, Rubens Alves de; Furtado, Marconi Ribeiro

doi:10.1590/1809-4430-eng.agric.v41n2p215-222/2021

Cited by 2 publications

(2 citation statements)

References 12 publications

(21 reference statements)

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“…However, there is also the possibility of shipping the radiometric sensors in drones or similar equipment, which allows the formation of TVDI images with the most convenient spatial resolution. This is a potential to be explored by the precision farming community (Oliveira et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

Water monitoring of soybean crops using the TVDI obtained from surface radiometric sensors

Schirmbeck

Fontana

Schirmbeck

et al. 2022

Pesq. agropec. bras.

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The objective of this work was to evaluate the use of the surface moisture data generated by the temperature-vegetation dryness index (TVDI), obtained from sensors positioned on the surface of a soybean (Glycine max) agricultural field. The dry and wet limits of the index were obtained using Landsat-8 images covering the region around the crop. To assess the quality and consistency of the TVDI, a correlation analysis was carried out between the TVDI, the normalized difference vegetation index (NDVI), surface temperature (TS), and the variables that are usually used to express surface moisture. The TVDI showed a significant correlation with soil moisture, water storage in the soil, water deficit, real evapotranspiration, and the real evapotranspiration/potential evapotranspiration ratio. The displacement of radiometric data measured on the surface (NDVI and TS) within the evaporative triangle, adjusted with orbital data, consistently describes the variability of water conditions during the study period, being a tool to support decision-making in crop management.

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Section: Resultsmentioning

confidence: 99%

Water monitoring of soybean crops using the TVDI obtained from surface radiometric sensors

Schirmbeck

Fontana

Schirmbeck

et al. 2022

Pesq. agropec. bras.

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“…Among the main factors reported to stimulate garlic secondary growth are changes in photoperiod [4,5], susceptible/sensitive cultivars, temperature, vernalization periods [2,6], high doses of nitrogen fertilization [7][8][9], time of irrigation, water stress [10,11], and gibberellin levels [12,13]. According to Burba, 1983, the vernalization of bulbils stimulates the accumulation of cytokinins and gibberellins, modifying the hormonal balance and causing precocious germination of the bulbil [14].…”

Section: Introductionmentioning

confidence: 99%

Plant Growth Regulator from the Essential Oil of Syzygium aromaticum L. for Inhibition of Secondary Growth of Garlic Cultivated under Tropical Conditions

Nasser,

Macedo,

Pinto

et al. 2024

AgriEngineering

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Garlic cultivation in tropical regions, such as the Brazilian Cerrado, faces the problem of secondary growth in the field induced by climatic conditions, which affects bulb quality and value. Clove essential oil (CEO) contains high levels of eugenol, which has the potential as an eco-friendly plant growth retardant (PGR) capable of reducing or inhibiting the secondary growth of bulbs in garlic cultivation. In this study, field experiments were carried out in two consecutive years (winter 2021 and 2022), spraying garlic plants with different concentrations of emulsion of CEO (0.0, 0.2, and 0.4%) in the differentiation phase; for comparison, the effects of water deficit, a prevalent agricultural technique in the region, were also evaluated. At a dose of 0.4%, the CEO reduced the prevalence of secondary growth and split bulbs without affecting yield. The mode of action of PGR was investigated by analyzing photosynthetic, enzymatic, and metabolomic parameters. The plants reduced amylolytic activity, and the photosynthetic parameters, after 7 days, were restored in both treatments. The analysis of the metabolomic profile of garlic leaves revealed changes in the pathways associated with the biosynthesis of fatty acids, wax, cutin, and suberin in plants treated with CEO, indicating possible damage to the surface coating of the leaf.

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Contribution of Soil Attributes and Morphological Variables to Yield of Irrigated Garlic

Cited by 2 publications

References 12 publications

Water monitoring of soybean crops using the TVDI obtained from surface radiometric sensors

Water monitoring of soybean crops using the TVDI obtained from surface radiometric sensors

Plant Growth Regulator from the Essential Oil of Syzygium aromaticum L. for Inhibition of Secondary Growth of Garlic Cultivated under Tropical Conditions

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