Foliar sampling time and critical level diagnosis of nutrients for blackberry

Gaurat, Jéssica Oliveira; Silva, Enilson de Barros; Cruz, Maria do Céu Monteiro da; Lima, João Esdras

doi:10.1080/01904167.2022.2067769

Cited by 3 publications

(5 citation statements)

References 13 publications

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“…Barrow & Hartemink (2023) confirmed that, in a soil with a high calcium carbonate (CaCO 3 ) content, the availability of micronutrients is reduced due to a high soil pH, where hydroxyl (OH -) reacts with Fe 3+ , Zn 2+ , and Cu 2+ and decreases the solubility product of the nutrient, forming ionic complexes such as Fe(OH) 3 and Zn(OH) 2 . However, the concentrations of Cu, Mn, Zn, and Fe in the leaves of the evaluated blackberry cultivars were higher than the critical levels of 9.7, 116.4, 22.9 and 79.6 mg kg -1 , respectively, reported by Gaurat et al (2023), which could be attributed to the greater need for nutrient absorption in response to liming since the critical levels in the present study were calculated for the maximum fruit yield of the cultivars. The concentration of Mn was higher than the critical level determined for the blackberry crop and was the highest among micronutrients in the leaves of all cultivars (Table 3).…”

Section: Resultscontrasting

confidence: 78%

“…After the application of limestone, due to the greater dilution of N in the leaves, the concentration of this nutrient decreased more than that of K (Table 3), explaining why it is the most absorbed by blackberry (Hall & Funt, 2017). The N concentration found for cultivars BRS Tupy, BRS Xavante, and Guarani was higher than the critical level of 25.5 g kg -1 determined by Gaurat et al (2023) for blackberry. Regarding K, the obtained concentration was lower than the critical level of 11.2 g kg -1 recommended by these authors for the crop.…”

Section: Resultscontrasting

confidence: 60%

“…Regarding the other macronutrients in the studied cultivars, the concentrations of Ca, Mg, and S were higher than the critical levels of 2.9, 2.9 and 0.6 g kg -1 , respectively, determined for blackberry (Gaurat et al, 2023).…”

Section: Resultscontrasting

confidence: 58%

“…Since blackberries have a relatively low P requirement (Hall & Funt, 2017), the concentration of this nutrient was higher than the critical level of 2.0 g kg -1 recommended for blackberry (Gaurat et al, 2023) in all evaluated cultivars, except Brazos, which showed the second best fruit yield (Figure 2).…”

Section: Resultsmentioning

confidence: 93%

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Soil acidity levels for blackberry liming recommendation and yield increase

Silva,

Lima,

Gaurat

et al. 2024

Pesq. agropec. bras.

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The objective of this work was to determine the acidity levels to obtain adequate soil chemical attributes for the maximum fruit yield of blackberry trees grown in acidic soils subjected to increasing limestone rates. The BRS Tupy, Brazos, Guarani, and BRS Xavante blackberry cultivars were evaluated on the Typic Hapludox (LVdf) and Rhodic Hapludox (LVd) soils, to which four rates of dolomitic limestone were applied (0, 1.5, 3.0, and 6.0 Mg ha-1). The effect of liming on soil chemical attributes, in a 2×4 factorial arrangement (soils and limestone rates), as well as leaf nutrient content and fruit yield, in a 2×4×4 factorial arrangement (soils, limestone rates, and cultivars), were evaluated. The maximum fruit yield was obtained with 3.3 Mg ha-1 dolomitic limestone. The blackberry cultivars showed a high demand for Ca, Mg, and base saturation and a low tolerance to aluminum in the soils. From 3.3 Mg ha-1 dolomitic limestone, the maximum fruit yield of blackberry trees grown in acidic soils is obtained with pH 5.6, maximum tolerated aluminum saturation of 6%, Ca and Mg concentration of 45.3 mmolc kg-1, and base saturation of 48.3%.

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Section: Resultscontrasting

confidence: 78%

Section: Resultscontrasting

confidence: 60%

Section: Resultscontrasting

confidence: 58%

Section: Resultsmentioning

confidence: 93%

See 2 more Smart Citations

Soil acidity levels for blackberry liming recommendation and yield increase

Silva,

Lima,

Gaurat

et al. 2024

Pesq. agropec. bras.

Self Cite

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“…Foliar diagnostics is especially important in case of unfavorable external factors that make it difficult for the root system to absorb nutrients from the soil (drought, heat, etc.) [10,11]. Therefore, foliar diagnostics should be given special attention during crop cultivation.…”

Section: Introductionmentioning

confidence: 99%

Approbation of functional diagnostics methods for application in the plant state assessing

Berestneva,

Mezhevova

2023

E3S Web Conf.

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The requirement of safflower (Carthamus tinctorius L., variety Alexandrite) for 14 nutrients was studied by the method of plants functional diagnostics. The possibility of using this method of plants functional diagnostics for assessing the state of plants, as well as assessing the ecological state was shown. This method is based on the chloroplasts suspension photochemical activity. It was found that the studied safflower is deficient in such mineral elements as Zn, Mg, Cu, Mo, N, KS. Doses for foliar feeding were determined based on the results of functional diagnostics. Functional diagnostic methods make it possible to assess the plant's requirement for a particular nutrient element, and not their content in the plant. The requirement of plants for elements can be estimated by controlling the intensity of physiological and biochemical processes. This method can be attributed to the main control tools in agriculture, which allows to control the crop yields. Because only with a constant supply of the necessary nutrients in optimal proportions throughout the growing season is it possible to maximize the use of the biological potential of plants. The use of plants functional diagnostic leads to a reduction in unproductive costs and the greening of agriculture. The data obtained by this method can be useful in a complex assessment of the ecological state of the environment.

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