Ammonium and Nitrate Nutrition of Horticultural Crops

Barker, Allen V.; Mills, Harry A.

doi:10.1002/9781118060759.ch8

Cited by 159 publications

(33 citation statements)

References 126 publications

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“…The higher concentration of cations generally observed under nitrate-N in the saline soil are in agreement with previous results for wheat (Irshad et al 2002). Generally, NH 4 -N reduces cation uptake and enhances anion uptake, while NO 3 -N has the opposite effect in several plant species (Barker and Mills 1980). For both saline and non-saline treatments, Na/N, Na/K, Na/Ca, Na/Mg and Na/P ratios were highest in the FNA-untreated plants.…”

Section: Resultssupporting

confidence: 81%

Mitigation of salt stress in strawberry by foliar K, Ca and Mg nutrient supply

Yıldırım¹,

Karlıdağ²,

Turan³

2009

Plant Soil Environ.

107

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Plant root and shoot dry weight, leaf relative water content (LRWC) and chlorophyll content were reduced by 30%, 21%, 15%, 34%, respectively, at 40mM NaCl as compared to non-salt stress conditions. However, membrane permeability (MP) of plant increased (85.0%) with increasing salinity. Foliar nutrient application (FNA) alleviated deleterious effects of salinity stress on growth and this effect was statistically significant. The highest alleviation effect of FNA at 40mM salinity stress was observed in the case of 10mM foliar KNO 3 and Ca(NO 3 ) 2 application, resulting in increase in plant root dry weight (50%), shoot dry weight (50%), LRWC (8.2%) and MP decrease (27.4%) at 40mM NaCl. Phosphorus, Fe and Zn contents in shoots and roots of plants also increased with FNA treatments, but they were still much lower than those of non-salt stress treatment. Sulphur, P, Fe and Zn contents of shoots reached similar values as in non-salt stress treatment when KNO 3 was applied, whereas Fe, Mn, Zn, and Cu contents of roots reached the values of non-salt stress treatment when Ca(NO 3 ) 2 was applied.

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Section: Resultssupporting

confidence: 81%

Mitigation of salt stress in strawberry by foliar K, Ca and Mg nutrient supply

Yıldırım¹,

Karlıdağ²,

Turan³

2009

Plant Soil Environ.

107

View full text Add to dashboard Cite

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“…It is required in the greatest quantities at each stage of plant growth during which N level markedly affects the amount of Rubisco content, and therefore photosynthesis (Evans and Terashima, 1988;Evans, 1989). In addition to the amount supplied, the form of N available has significant effects on the growth and photosynthesis of plants (Cramer and Lewis, 1993), and preference for the N sources nitrate ( varies between plant species (Baker and Mills, 1980). For example, to 4 NH + nutrition (Bloom et al, 1989;Kafkafi, 1990;Cramer and Lewis, 1993;Claussen and Lenz, 1995;Roosta and Schjoerring, 2007 (Geiger et al, 1999;Guo et al, 2002;Lopes et al, 2004;Lopes and Araus, 2006 (Geiger et al, 1999;Guo et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrogen form on growth, CO2 assimilation, chlorophyll fluorescence, and photosynthetic electron allocation in cucumber and rice plants

Zhou

Zhang

Wang

et al. 2011

J. Zhejiang Univ. Sci. B

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“…However, according to Barker and Mills (1980), although nitrate assimilation requires a high energy demand, plant growth is higher when it is supplied with nitrate rather than with ammonium. It is believed that the need for detoxification of the plant due to excess of ammonium absorbed may abolish its advantage in terms of energy cost (GUO et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

Desenvolvimento in vitro da orquídea ameaça de extinção Laelia marginata Lindl. em meios de cultivo contendo diferentes relações nitrato/amônio

Bertoncelli

Alves

Hoshino

et al. 2017

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In vitro cultivation is a very important method for the conservation of germplasm and the multiplication of endangered plants; however, studies on the adequacy of the nutrients used for a good development of each species are needed. The objective of this study was to evaluate the in vitro development of Laelia marginata Lindl. in culture media containing different nitrate/ ammonium ratios. Seedlings were obtained from seeds germinated in vitro. The treatments consisted of different nitrate/ ammonium ratios, with five proportions of NO 3 -and NH 4 + : T1-0/100; T2-25/75; T3-50/50; T4-75/25 and T5-100/0. At 200 days after seedling transplanting, height of the aerial part, root length, number of leaves, number of shoots, leaf length, leaf width, aerial and root dry mass and contents of chlorophyll a, b and carotenoids were evaluated. A completely randomized design was used, with five treatments and ten replicates. The combination of 50/50 nitrate/ammonium resulted in the highest values of aerial part and root length, dry mass of the aerial part and root, as well as leaf length and width. The proportion of 50/50 nitrate/ammonium resulted in the best initial development of L. marginata seedlings. Keywords: nitrogen sources, micropropagation, Orchidaceae RESUMO Desenvolvimento in vitro da orquídea ameaça de extinção Laelia marginata Lindl. em meios de cultivo contendo diferentes relações nitrato/amônio. O cultivo in vitro é um método de exímia importância na conservação de germoplasma e na multiplicação de plantas ameaçadas de extinção, porém necessita de estudos sobre a adequação dos nutrientes utilizados para um bom desenvolvimento de cada espécie. O objetivo foi avaliar o desenvolvimento in vitro de Laelia marginata Lindl. em meios de cultura contendo diferentes relações nitrato/amônio. As plântulas foram obtidas a partir de sementes germinadas in vitro. Os tratamentos consistiram em diferentes relações nitrato/amônio, sendo cinco proporções NO 3 -e NH 4 + : T1-0/100; T2-25/75; T3-50/50; T4-75/25 e T5-100/0. Aos 200 dias após o transplante das plântulas, foram avaliados altura da parte aérea, comprimento de raiz, número de folhas, número de brotos, comprimento da folha, largura da folha, massa seca da parte aérea e de raiz, teor de clorofila a, b e carotenoides. Utilizou-se delineamento inteiramente casualizado, sendo cinco tratamentos e dez repetições. A combinação de 50/50 nitrato/amônio resultou nos maiores valores de comprimento de parte aérea e raiz, massa seca de parte aérea e raiz, bem como comprimento e largura da folha. A proporção de 50/50 de nitrato/amônio resultou no melhor desenvolvimento inicial das plântulas de L. marginata. Palavras-chave: fontes de nitrogênio, micropropagação, Orchidaceae.

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Ammonium and Nitrate Nutrition of Horticultural Crops

Cited by 159 publications

References 126 publications

Mitigation of salt stress in strawberry by foliar K, Ca and Mg nutrient supply

Mitigation of salt stress in strawberry by foliar K, Ca and Mg nutrient supply

Effects of nitrogen form on growth, CO2 assimilation, chlorophyll fluorescence, and photosynthetic electron allocation in cucumber and rice plants

Desenvolvimento in vitro da orquídea ameaça de extinção Laelia marginata Lindl. em meios de cultivo contendo diferentes relações nitrato/amônio

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