Physiological Bases for Assessing the Nutritional Requirements of Plants

Ulrich, Albert

doi:10.1146/annurev.pp.03.060152.001231

Cited by 308 publications

(135 citation statements)

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“…To determine critical N concentration in stevia leaf we followed the "Critical nutrition concentration" concept advanced by Ulrich (1952) The critical N concentration in stevia leaf was estimated from the relative amount of leaf biomass to achieve 80% of the maximum production of stevia leaf (Kouno et al, 1999). For both the soil, relative leaf biomass yield was plotted on the ordinate (Y axis) against the respective N concentration of stevia leaf on the abscissa (X axis) in fig.…”

Section: Critical Leaf N Concentration Of Stevia Leafmentioning

confidence: 99%

Nitrogen requirement and critical N content of stevia grown in two contrasting soils of Bangladesh

Maniruzzaman

Chowdhury

Mohiuddin

et al. 2016

Res. Agric. Livest. Fish.

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Nitrogen is recognized as one of the most limiting nutrient for crop growth in Bangladesh and can be supplemented with inorganic fertilizers like urea. The experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University during March to July 2012. The objective was to examine the effects of different levels of N on the growth, leaf biomass yield, N content and to estimate minimum N requirement and critical N content of stevia. The treatments included six N rates (0, 100, 150, 200, 250 and 300 kg ha -1 ). Plant sampling was done at 15, 30, 45 and 60 days after planting (DAP) to measure plant height, number of branches and leaves, fresh and dry weight of leaves, leaf area and N concentration. The results revealed that all the characters were significantly affected by different N rates. The highest values of all parameters except plant height and N concentration were obtained from 250 kg N ha -1 and the lowest values from N control. Nitrogen application at all levels increased leaf dry yield at harvest by 99 to 505% in acid soil and 69 to 438% in noncalcareous soil, respectively over control. The growth of most parameters was rapid at the later stages (30 to 60 DAP). Leaf N content proportionately increased with the increasing rates of N. The highest N concentration was obtained from its highest application (300 kg N ha -1 ). The minimum amount of N for maximum leaf biomass production in the plants grown in acid and non-calcareous soils was estimated to be ca 273 and 257 kg ha -1 , respectively. The critical N concentration to achieve 80% of the maximum production of stevia leaf was also estimated to be ca 1.43 and 1.50% in the leaves of stevia plants grown in acid and non-calcareous soils, respectively.

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Section: Critical Leaf N Concentration Of Stevia Leafmentioning

confidence: 99%

Nitrogen requirement and critical N content of stevia grown in two contrasting soils of Bangladesh

Maniruzzaman

Chowdhury

Mohiuddin

et al. 2016

Res. Agric. Livest. Fish.

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“…It is defined as the ratio of actual shoot biomass N concentration to critical N concentration (N c ), which is defined as the minimum plant N concentration allowing maximum shoot biomass (Ulrich, 1952). The concept of a critical N curve based on the N concentration in whole plants was first developed by Lemaire and Salette (1984) for tall fescue and has been successfully applied to wheat (Justes et al, 1994), maize (Plénet and Lemaire, 2000), sorghum (Plénet and Cruz, 1997), rice (Sheehy et al, 1998), winter canola (Colnenne et al, 1998), pea (Ney et al, 1997) and tomato (Tei et al, 2002).…”

mentioning

confidence: 99%

SPAD Values and Nitrogen Nutrition Index for the Evaluation of Rice Nitrogen Status

Yang

et al. 2014

Plant Production Science

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“…Seasonal variation of ion content of plant tissue in general was reported by Ulrich (1952). Seasonal variation in ion content of greenhouse-grown carnations was reported by Nelson and Boodley (1965).…”

Section: Seasonal Effect On Ion Contentmentioning

confidence: 80%

“…Genetic variation must be considered in interpreting tissue analysis (Ulrich, 1952;Wit, Dijkshoorn, and Noggle, 1963 (Watanabe, Lindsay, and Olsen, 1965).…”

Section: Genetic Effect On Ion Contentmentioning

confidence: 99%

Ionic Balance and Growth of Carnations

1971

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OF THESIS IONIC BAIJU~CE AND GROWTH OF CARNATIONSA flow chart for diagnosing the nutrient status of carnation, Dianthus caryophyllus, was designed using the data from nutrient culture experiments. Diagnostic values for any specific ion were determined after considering the overall organic acid content, (C-A), of the plant and the level of the other ions in the plant tissue.The optimum (C-A) content for the carnation was 1700-1900 milligram equivalents per kilogram dry matter.There was a highly significant correlation between increase in (C-A) content and plant yield. Changes in the (C-A) content with few exceptions were mainly due to changes in the cation eC) concentration of the plant tissue.External factors affected the (C-A) content. Two levels of the external factors, light and CO 2 , were studied.There was a significant increase in chloride uptake at the higher light level.The total cation, magnesium, nitrate, and (C-A) concentrations in the tissue were significantly increased at the higher C02 level. Total cation uptake, total (C-A), and yield were increased at the higher C02 level. There was a decrease in chloride uptake at the higher CO 2 level.iii There were probably three systems operating in cation uptake. 1. When potassium was in, good supply, its presence suppressed the uptake of sodium rather effectively.2. When the potassium supply was deficient, the four ions K, Nat Ca, and Mg competed for uptake. 3. Magnesium and calcium may have been taken up by a separate system in which they competed equally for uptake. Sodium enhanced the uptake of the other cations.There was no apparent competition among anions for uptake. Sulfate and nitrate remained fairly constant in the plant tissue regardless of nutrient treatment. Phosphate was readily taken up, probably in luxury quantities. The chloride ion apparently was taken up over and above the normal ino~ganic anion uptake.

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Physiological Bases for Assessing the Nutritional Requirements of Plants

Cited by 308 publications

References 0 publications

Nitrogen requirement and critical N content of stevia grown in two contrasting soils of Bangladesh

Nitrogen requirement and critical N content of stevia grown in two contrasting soils of Bangladesh

SPAD Values and Nitrogen Nutrition Index for the Evaluation of Rice Nitrogen Status

Ionic Balance and Growth of Carnations

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