The Uptake of Nutrients through Leaf Surfaces

Wittwer, S. H.; Bukovac, Martin J.

doi:10.1007/978-3-7091-8220-8_10

Cited by 18 publications

(8 citation statements)

References 62 publications

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“…22); the rate and degree of diffusion can vary with the nature of the diffusing chemical and of the cuticle (11). Urea is a small nonpolar molecule which is known to penetrate plant cuticles with relative ease (23). Urea phosphate is a larger, polar molecule and would be expected to diffuse less readily through the cuticle.…”

Section: Discussionmentioning

confidence: 99%

Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn¹

Neumann¹

1979

Agronomy Journal

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Foliar spraying of crops with fertilizer solutions often causes leaf bum, which reduces the photosynthetic area of the leaves and can reduce yields. Damage can be avoided sometimes by careful control of factors such as spray droplet size, wetting agents, ambient temperature, pH, and concentration of solutes. However, information concerning the mechanism inducing burn damage or the comparative merits of different fertilizer sources of the same mineral is limited. The objects of this work were: 1 to use a rapid laboratory assay to compare the damaging effects of various fertilizer sources of N, P, K, and S on leaf cell membranes, 2 to identify the mechanism of membrane damage by fertilizer solutions, and 3) to make a preliminary evaluation of any correlation between solute‐induced membrane damage and leaf bum in the field. The laboratory assay consisted of a 4‐min vacuum infiltration of 0.3‐cm leaf segments with test solution followed by assay of UV‐absorbing materials leaked subsequently into a distilled water rinse. Threshold concentrations of fertilizers causing membrane damage symptoms were determined for nine fertilizer sources. Damaging concentrations of N ranged from 3.5 to 31 g/liter depending on the fertilizer assayed. Damaging concentrations of various P, K, and S sources ranged from 3.8 to 11 g/liter for P, 12.2 to 22 g/liter for K, and 6.4 to 8.2 g/liter for S. No evidence was found for the existence of a causal relationship between either pH, molarity, conductivity, or osmotic potentials of test solutions and the onset of membrane damage. Preliminary field trials showed that the assay could predict damage trends for urea and urea phosphate sprays.

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Section: Discussionmentioning

confidence: 99%

Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn¹

Neumann¹

1979

Agronomy Journal

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“…Nevertheless, available information for the relationship between amino acids and macro and micronutrients are limited. While micronutrients like (Fe, Mn and Zn) were reported to improve roots growth leading to greater absorbing capacity of the root surface and consequently increasing the nutrient uptake from the soil [35]. Such improvement could be reflected on increasing the dry matter accumulation through the improvement of photosynthesizing production and mobilization of plants [17,36].…”

Section: Uptake Of Heavy Metals By Coreopsis Tinctoria Plants As Affementioning

confidence: 99%

Chemical Constituents, Growth and Flowering of Coreopsis tinctoria Nutt Plants as affected by Glutamic Acid and irrigation by different wastewater treated effluents.

2017

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T HIS study deals with the effect of glutamic acid and the reuse of chemically treated wastewater on the chemical constituents of Coreopsis tinctoria Nutt Plants in a batch-pot experiment. This chemical constituent includes the nutrient elements (N, P, K), micronutrient elements (Fe, Mn), sodium, as well as heavy metals (Cd, Cu, Zn). In this study different doses of glutamic acid were examined in combination with different types of treated wastewater to investigate the environmental stress on Coreopsis tinctoria Nutt Plants. The study was conducted during the two successive seasons of (2015/2016-2016/2017) in the greenhouse of National Research Centre, Cairo, Egypt, aimed to study the response of Coreopsis tinctoria plants to glutamic acid application at four chemical concentrations (0, 50, 100 and 150 ppm) as well as the effect of treated wastewater as a source of irrigation. Besides, this investigation includes the impact on growth and flowering of Coreopsis tinctoria plants. The physical and chemical characteristics of the treated wastewaters were investigated and reused to determine the beneficial advantages as an additional water resource. It was concluded that Glutamic acid and irrigation with three types of treated wastewater effluents individually induced favorable changes in Coreopsis tinctoria Nutt plants in terms of chemical constituents, vegetation and flowering. Thus, the effluent of the chemically treated municipal wastewater can be reused safely without any side effect. Meanwhile, type of treatment has an important effect on the final chemical characteristics of the treated wastewater, particularly the nutrient elements and heavy metals. The reuse of treated wastewater is the most important challenge in the near future to increase the water budget in Egypt as the population escalating and the stringent need for more cultivated land. Consequently, the need for extra safe water resources should be supplied.

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“…Foliar application of supplemental fertilizer has proved very efficient and economic for crop plants (Wittwer and Bukovac 1969;Afridi and Wasiuddin 1979;Kannan 1986Kannan , 1990Mohammad 1989). Keeping this in mind, a field experiment was conducted to investigate the feasibility of foliar application of N and P, alone and in combination for enhancing the fruit yield, oil yield and oil quality of fennel under optimal and sub-optimal basal fertilizer levels.…”

Section: Mots Clésmentioning

confidence: 99%

Changes in the essential oil constituents of fennel (Foeniculum vulgare) as influenced by soil and foliar levels of N and P

Khan¹,

Azam²,

Samiullah³

1999

Can. J. Plant Sci.

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Khan, M. M. A., Azam, Z. M. and Samiullah. 1999. Changes in the essential oil constituents of fennel (Foeniculum vulgare) as influenced by soil and foliar levels of N and P. Can. J. Plant Sci. 79: 587-591. In a split-plotfield trial, the effect of foliar (F) application of 0 or 20 kg N, 2 kg P or 20 kg N + 2 kg P ha -1 was studied on the composition (analysed by GLC) and yield of fennel essential oil constituents grown with two soil (S) levels (60 kg N + 27 kg P and 90 kg N + 40 kg P ha -1 ). Camphene and dfenchone, both being bicyclic monoterpenes, and d-α-pinene, another bicyclic monoterpene showed a similar trend (R = 0.87) and their contents were maximum with FN20P2 at both soil levels. Methylchavicol and anethole (Phenylpropanoids) exhibited parallel trends (R = 0.56), with the control giving higher values at both soil levels. Interestingly, there was a negative correlation between some of the constituents, e.g. anethole versus d-fenchone (R = -0.99), anethole versus camphene (R = -0.87), and methylchavicol and d-α-pinene (R = -0.71), suggesting that the synthesis of the one constituent was at the expense of the other. Soil application of N and P enhanced the contents (%) of the phenylpropanoids (anethole and methylchavicol) while their foliar application increased the monoterpenes (d-fenchone, camphene and d-α-pinene). It is concluded that appropriate combinations of basal and foliar nutrients could be exploited to obtain higher yields of the desired constituents of fennel oil. , montrant que la synthèse d'un des constituants se faisait aux dépens de l'autre. La fumure N et P du sol augmentait la proportion des phénylpropanoïdes, tandis que la fertilisation foliaire accroissait celle des monoterpènes. Une bonne combinaison des fertilisants apportés au sol ou par voie foliaire, pourrait être utilisée pour obtenir un rendement plus élevé des composants recherchés de l'huile du fenouil.

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The Uptake of Nutrients through Leaf Surfaces

Cited by 18 publications

References 62 publications

Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn¹

Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn¹

Chemical Constituents, Growth and Flowering of Coreopsis tinctoria Nutt Plants as affected by Glutamic Acid and irrigation by different wastewater treated effluents.

Changes in the essential oil constituents of fennel (Foeniculum vulgare) as influenced by soil and foliar levels of N and P

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The Uptake of Nutrients through Leaf Surfaces

Cited by 18 publications

References 62 publications

Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn1

Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn1

Chemical Constituents, Growth and Flowering of Coreopsis tinctoria Nutt Plants as affected by Glutamic Acid and irrigation by different wastewater treated effluents.

Changes in the essential oil constituents of fennel (Foeniculum vulgare) as influenced by soil and foliar levels of N and P

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Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn¹

Rapid Evaluation of Foliar Fertilizer‐induced Damage: N, P, K, S on Corn¹