Indexes of Sulfur Deficiency in Alfalfa. II. Plant Analyses<sup>1</sup>

Westermann, D. T.

doi:10.2134/agronj1975.00021962006700020024x

Cited by 23 publications

(10 citation statements)

References 15 publications

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“…It can be said however that it is desirable for cabbage plants to have a total N/S content ratio between 10 and 20(3). The inosoluble N/S content ratio changes to a smaller extent than the total N/S content ratio, because the fluctuation of nitrogen and sulfur in the non-protein fraction is greater than in the protein fraction (10). The insoluble N/S content ratio may thus be a more reliable guideline for diagnosing sulfur nutrition of plants than the total N/S content ratio(7).…”

Section: Discussionmentioning

confidence: 99%

Nutritional Relationship between Nitrogen and Sulfur in Cabbage (Brassica oleracea L. var. capitata L.)

Hara

Sugimoto

Sonoda

1981

Engei Gakkai zasshi

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SummaryCabbage plants were grown in nutrient solutions containing 3 levels of nitrogen (as NaNO3 ; 10, 100, 500 ppm N) combined with 3 levels of sulfur (as Na2SO4 ; 1, 10, 50 ppm S), and the effects of the nitrogen and sulfur supply on the growth and the chemical composition of the plants were studied. Total plant dry weight increased with an increase in the S supply when the N supply was 100 or 500 ppm, but was always small when the N supply was 10 ppm, irrespective of the S supply. The highest cabbage-head yield was obtained at 100 ppm N and 10 ppm S, while little cabbage-head yield was obtained at 10 ppm N or 1 ppm S. The total N content in each organ increased greatly with an increase in the N supply and decreased slightly with an increase in the S supply. The total S content incresased greatly with an increase in the S supply and decreased slightly with an increase in the N supply. A total N content below 2% and a total S content below 0.1% on a dry basis in the outer leaves was found to be insufficient for cabbagehead formation. Cabbage-head development was most efficiently when the total N/S content ratio was between 10 and 20, although the ratio fluctuated widely, from 4 to 235. N-deficient plants contained less sugars and more starch as compared with the N-and S-sufficient plants. S-deficient plants contained less sugars and 80% ethanol-insoluble protein N and more 80% ethanol-soluble non-protein N.

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Section: Discussionmentioning

confidence: 99%

Nutritional Relationship between Nitrogen and Sulfur in Cabbage (Brassica oleracea L. var. capitata L.)

Hara

Sugimoto

Sonoda

1981

Engei Gakkai zasshi

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“…Another subsample was wet-ashed with a HCL0 4-HNO3 mixture. The digested solution was analyzed for P colorimetrically (4); K, Ca, Mg, Zn, Cu and Mn by atomic absorption spectrophotometry; and S turbidimetrically (13). All analyses are reported on a dry matter basis.…”

Section: Methodsmentioning

confidence: 99%

Nutrient concentration relationships between the fourth petiole and upper-stem of potato plants

Westermann¹,

Bosma²,

Kay³

1994

American Potato Journal

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Successfully evaluating the nutritional status of a crop during growth and development is dependent upon sampling an identifiable plant part.Consistently sampling a petiole of the same maturity in potatoes (Solanum tuberosum L.) is difficult. We evaluated the nutrient relationships between the upper-stem and the fourth petiole from Russet Burbank plants in field studies having N, P, K, Zn or Mn variables. The upper-stem was obtained by excising the stem below the sixth leaf and removing all leaves and the terminal meristem. Petole NO 3-N, P, K, Zn and Mn concentrations were from deficient to sufficient. The NO 3-N, P and K concentrations were similar in the fourth petiole and upper-stem, while the Zn concentration was 40% higher in the upper-stem. Calcium, Mg and Mn concentrations were lower in the upper-stem than in the fourth petiole. Copper and S relationships were not adequately defined. The fourth petiole's NO 3-N, P and K diagnostic concentrations now used to monitor plant nutrient status can also be used for upper-stem samples. Zinc diagnostic concentrations should be increased, while Ca, Mg and Mn concentrations should be adjusted downward in the upper-tem. Additional data are needed to refine the Ca and Mg relationships, and to establish relationships for Cu, S and other essential nutrients. A significant advantage of using the upper-stem is the elimination of the petiole selection problem when sampling. CompendioLa evaluaciOn exitosa de las condiciones de nutriciOn de un cultivo durante su crecimiento y desarrollo depende en tomar la parte correcta de la planta. El muestreo permanente de un peciolo con igual estado de madurez en el cultivo de papa (Solanum tuberosum L.), es dificil. Se evaluaron las relaciones entre la parte superior del tallo y el cuarto peciolo de plantas Russet Burbank en estudios de campo que tenian aplicaciones variables de N, P, K, Zn o Mn. La parte superior del tallo fue obtenida seccionando al mismo por debajo de la sexta hoja y eliminando todas las hojas y el meristema terminal. Las concentraciones de NO 3-N, P, K, Zn y Mn estuvieron entre deficientes y suficientes. Las concentraciones del NO3-N, del P y del K fueron similares en el cuarto peciolo y en la parte superior del tallo, mientras que la concentraciOn del Zn fue 40% mds alta en la parte superior del tallo. Las concentraciones de Ca, Mg y Mn fueron menores en la parte superior del tallo que en el cuarto peciolo. Las relaciones entre el Cu y el S no fueron definidas adecuadamente. Las concentraciones de diagnOstico de NO B-N, P y K en el cuarto peciolo utilizadas ahora para el seguimiento del estado de nutricinn de las plantas, puede tambien utilizarse para las muestras de la parte superior del tallo. Las concentraciones de diagnOstico del Zn deben ser incrementadas, mientras que las de Ca, Mg y Mn deben rebajarse en la parte superior del tallo. Se requiere de informaciOn adicional para refinar las relaciones del Ca y del Mg y para establecer las relaciones para el Cu, S y otros nutrientes esenciales. Una venta...

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“…The plant samples were digested with HCIO, and HNO 3 , filtered, and Cu , Mn, Fe, Zn, Ca, Mg, and K concentrations determined in the filtrates with an atomic absorption spectrophotometer (Isaac and Kerber, 1971); P concentrations were determined colorimetrically (Kitson and Mellon, 1944); and S concentrations were determined turbidimetrically (Westermann, 1975). Total N concentrations were determined by the Kjeldahl procedure (Bremner and Mulvaney, 1982).…”

Section: Plant Methodsmentioning

confidence: 99%

Factors Affecting Zinc Uptake in Cropping Systems

Hamilton¹,

Westermann²,

James

1993

Soil Science Soc of Amer J

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Zinc availabilities can change with different cropping management practices. The objective of this study was to identify some of the causative factors associated with previous crops contributing to Zn uptake differences in a subsequent crop. Field studies over 3 yr evaluated the Zn availability after four precropping treatments: bean (Phaseolus vulgaris L.), corn (Zea mays L.), wheat (Triticum aestivum L.), and fallow, across two Zn fertilization rates (with and without 11 kg Zn ha-' as ZnSO4), using the 'Viva' bean as a test crop. Soil samples taken before and after the test crop were analyzed for extractable P, Zn, Cu, Mn, and Fe, and organic matter. Soil respiration during the test crop was periodically estimated the last cropping year. Whole plant samples estimated nutrient concentration and uptake. Soil Zn extracted by diethylenetriaminepentaacetic acid (DTPA) was increased by Zn fertilization but not affected by precropping treatments. Zinc uptake by bean was significantly higher after precropping with corn and lower after fallow regardless of Zn fertilization. Uptake differences were most pronounced during early plant growth. Phosphorus and Cu uptake varied with treatment in a similar pattern as Zn uptake, and were positively correlated with each other. Zinc uptake was also positively correlated with soil organic matter and negatively correlated with soil P. Soil respiration rate was significantly lower after the fallow treatment compared with other precropping treatments. Vesicular-arbuscular mycorrhiza (VAM) colonization in the test crop roots was higher after corn and lower after fallow regardless of soil Zn concentrations. Colonization was positively cor-M.A. Hamilton, INEL, EG&G ID,

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Indexes of Sulfur Deficiency in Alfalfa. II. Plant Analyses¹

Cited by 23 publications

References 15 publications

Nutritional Relationship between Nitrogen and Sulfur in Cabbage (Brassica oleracea L. var. capitata L.)

Nutritional Relationship between Nitrogen and Sulfur in Cabbage (Brassica oleracea L. var. capitata L.)

Nutrient concentration relationships between the fourth petiole and upper-stem of potato plants

Factors Affecting Zinc Uptake in Cropping Systems

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Indexes of Sulfur Deficiency in Alfalfa. II. Plant Analyses1

Cited by 23 publications

References 15 publications

Nutritional Relationship between Nitrogen and Sulfur in Cabbage (Brassica oleracea L. var. capitata L.)

Nutritional Relationship between Nitrogen and Sulfur in Cabbage (Brassica oleracea L. var. capitata L.)

Nutrient concentration relationships between the fourth petiole and upper-stem of potato plants

Factors Affecting Zinc Uptake in Cropping Systems

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Product

Resources

About

Indexes of Sulfur Deficiency in Alfalfa. II. Plant Analyses¹