Diagnosing Sulfur Deficiency of Alfalfa (<i>Medicago sativa</i> L.) from Plant Analysis<sup>1</sup>

Pumphrey, F. V.; Moore, D. P.

doi:10.2134/agronj1965.00021962005700040016x

Cited by 48 publications

(16 citation statements)

References 8 publications

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“…yields were not increased. Pumphrey and Moore (1965), Dijkshoorn and van Wijk (1967), and Stewart and Porter (1969) Maynard et al (1983), considered the plant Hl-reducible S:total S ratio to be more important than (N:S), in predicting seed yield of rape (8. n&pus and B. campestris)…”

Section: Resultsmentioning

confidence: 99%

THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: SULPHUR RESPONSE AND REQUIREMENTS OF ALFALFA (Medicago sativa L.), RAPE (Brassica napus L.) AND BARLEY (Hordeum vulgare L.)

Bailey¹

1986

Can. J. Soil. Sci.

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were grown in a growth chamber with and without sulphur (S) on surface samples (0-15 cm) of l7 eastern Canadian prairie soils; The soil varied in pedological origin and were divided into three groups based on their total nitrogen:total sulphur (N:S) ratios. Herbage yield of alfalfa (full bud) and rape (flowering) were highly correlated (P<0.01) with soil (N:S)" ratios and soil SO.-S, while for barley (shot blade) the relationships were significant (P<0.05). Herbage yields of the three crops were also significantly correlated (P<0.05) with plant (N:S)" ratios. Soil (N:S) ratio was considered the best predictor of herbage yield because it is more stable over time than soil SO.-S and because plant (N:S)" ratio only indicates a need for future fertilization. The highest yields and S and N composition of plant tissues were obtained on soils with SO,-S concentrations greater than 12 mg kg-' and an (N:S), ratio of approximately 6. These soils had sufficient S to meet the requirements of all three crops. Addition of S had no effect on herbage yield but did increase S uptake.Results indicated that soils with (N:S), ratio of 9 and SO.-S concentration of 7 mg kg-', may have sufficient S to meet the requirement of barley but not alfalfa and rape. However, soils with higher (N:S). ratios and lower SO.-S content were dpficient in S for all crops. Barley was the most responsive to applied S of the three crops, although it had the lowest concentration ofS (0.15 mg S g-'dry herbage) and highest plant (N:S)" ratio (16) at its highest yield. Rape was more responsive to applied S than alfalfa but the corrcentration of S in the herbage of both crops at their highest yields were similar, O.27 and O.26 mg S g -' dry herbage, respectively.Both crops also had lower (N:S)" ratios than barley at the highest yield (14 (alfalfa) and 12 (rape)), reflecting their greater S uptake. For personal use only.

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Section: Resultsmentioning

confidence: 99%

THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: SULPHUR RESPONSE AND REQUIREMENTS OF ALFALFA (Medicago sativa L.), RAPE (Brassica napus L.) AND BARLEY (Hordeum vulgare L.)

Bailey¹

1986

Can. J. Soil. Sci.

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“…Sulphur concentration is one of the parameters commonly used to gauge the nutritional status of plants (Pumphrey and Moore, ; Schnug and Haneklaus, ) and to assess the nutritional value of forage plants for livestock (Qi et al ., ). Sulphur concentrations of forage plants are typically classified into four categories reflecting animal nutritional requirements: <1·0 g kg −1 , indicating deficient levels for all ruminants; >1·0 g kg −1 , indicating a satisfactory nutrition level for beef cattle; >1·6 g kg −1 , indicating a satisfactory nutritional level for adult sheep; and >2·0 g kg −1 , indicating a satisfactory nutritional level for dairy cows and ewes (NRC, ).…”

Section: Discussionmentioning

confidence: 99%

Sulphur supply affects morphology, growth and nutritional status of TanzaniaGuinea grass andMineirão stylo

Schmidt

Monteiro

2014

Grass and Forage Science

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Forage plants constitute the primary food source for ruminants, and their aboveground growth and belowground growth depend on mineral nutrient supply. The objective of this study was to identify and quantify variation in morphology, production and nutritional status in Panicum maximum cv. Tanzânia and Stylosanthes guianensis cv. Mineirão grown with varying levels of S availability. In an experimental setting, plants of both species received rates of S calculated to reflect suboptimum, adequate and excessive levels of the element. S had a direct effect on morphology and production in both species. S limitation altered the allocation of photosynthates between the aboveground and belowground portions of Guinea grass and stylo, and was associated with lower root dry mass production. Guinea grass plants increased root surface area as an adaptive mechanism when S was limiting in the growth medium. The relative chlorophyll index of recently expanded leaves was correlated with aboveground dry mass production. After the initial growth, Guinea grass and stylo plants showed similar S requirements and use efficiency to achieve the maximum of aboveground productivity, although leguminous plants have a substantially higher capacity for store S in the shoot tissue as compared to gramineous plants growing under similar availability of S in the medium. While applying S was necessary for increasing dry mass production in both species, planting these species together is a promising strategy for guaranteeing high yields of forage with a nutritional value that satisfies the S requirements of ruminants.

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“…Previous studies have reported that increasing S supply increases shoot dry weight of alfalfa (Pumphrey and Moore, 1965;Seim et al, 1969). However, the effect of S supply on the relationship between alfalfa shoot and root production has received little attention.…”

Section: Discussionmentioning

confidence: 99%

“…Drew and Suker, 1978;Hajabbasi and Schumacher, 1994;Mackie-Dawson, 1999). Pumphrey and Moore, 1965;Seim et al, 1969), but root morphological responses of alfalfa to S supply have attracted much less attention. Some reports have recognized the influence of S on the yield and quality of alfalfa (Medicago sativa L.) (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Effects of sulphur supply on the morphology of shoots and roots of alfalfa (Medicago sativa L.)

Wang

Cui

et al. 2003

Grass and Forage Science

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A sulphur (S)‐deficient top soil was used in a pot experiment to investigate the effect of S supply on shoot and root growth and development in alfalfa (Medicago sativa L.). The treatments consisted of three rates of addition of S: 0, 20 and 40 mg kg−1 soil and each was replicated four times. Alfalfa was harvested at 15, 30, 45, 60 and 75 d after seedling emergence. By the end of the experiment, plants with S supply had a significantly larger leaf area, heavier leaf, shoot and root dry weight per pot than controls. The effects of adding S also significantly increased plant height, basal stem diameter, chlorophyll concentration of young leaves, root length and root surface area compared with controls. The effects of S were greater on shoots than on roots. The ratio of root to shoot dry weight was 0·47 when S was supplied and 0·88 without added S, indicating that c. 0·32 and 0·47 of the total net photosynthate, produced with or without S supply, respectively, were used for the development of roots. Overall, overcoming S deficiency resulted in a significant increase in shoot and root growth.

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Diagnosing Sulfur Deficiency of Alfalfa (Medicago sativa L.) from Plant Analysis¹

Abstract: Synopsis Sulfur‐deficient alfalfa harvested at the early bloom stage contained less than 0.22% S and had a N:S ratio greater than 11.

Cited by 48 publications

References 8 publications

THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: SULPHUR RESPONSE AND REQUIREMENTS OF ALFALFA (Medicago sativa L.), RAPE (Brassica napus L.) AND BARLEY (Hordeum vulgare L.)

THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: SULPHUR RESPONSE AND REQUIREMENTS OF ALFALFA (Medicago sativa L.), RAPE (Brassica napus L.) AND BARLEY (Hordeum vulgare L.)

Sulphur supply affects morphology, growth and nutritional status of TanzaniaGuinea grass andMineirão stylo

Effects of sulphur supply on the morphology of shoots and roots of alfalfa (Medicago sativa L.)

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Diagnosing Sulfur Deficiency of Alfalfa (Medicago sativa L.) from Plant Analysis1

Abstract: Synopsis Sulfur‐deficient alfalfa harvested at the early bloom stage contained less than 0.22% S and had a N:S ratio greater than 11.

Cited by 48 publications

References 8 publications

THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: SULPHUR RESPONSE AND REQUIREMENTS OF ALFALFA (Medicago sativa L.), RAPE (Brassica napus L.) AND BARLEY (Hordeum vulgare L.)

THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: SULPHUR RESPONSE AND REQUIREMENTS OF ALFALFA (Medicago sativa L.), RAPE (Brassica napus L.) AND BARLEY (Hordeum vulgare L.)

Sulphur supply affects morphology, growth and nutritional status of TanzaniaGuinea grass andMineirão stylo

Effects of sulphur supply on the morphology of shoots and roots of alfalfa (Medicago sativa L.)

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Diagnosing Sulfur Deficiency of Alfalfa (Medicago sativa L.) from Plant Analysis¹