Sulfur and Nitrogen Content of Alfalfa Herbage During Growth<sup>1</sup>

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

doi:10.2134/agronj1965.00021962005700030001x

Cited by 29 publications

(15 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These figures are much lower than the 0.20-0.22% required by an actively growing ryegrasswhite clover pasture (McNaught & Crisstoffels 1961). Total S compared with (N/S), (i.e., total N % : total S %) values (Table 2) were more affected by S application, being similar to the mature lucerne results obtained by Pumphrey & Moore (1965). For lucerne, Beaton et al (1969) found a (PIS), ratio of 1.0-1.2 for most effective S sources, whereas Watson (1967) gained no response to S at a (PIS), value < I.…”

Section: Resultssupporting

confidence: 73%

A sulphur response: White clover seed production

Clifford¹,

White²

1986

New Zealand Journal of Experimental Agriculture

View full text Add to dashboard Cite

show abstract

Section: Resultssupporting

confidence: 73%

A sulphur response: White clover seed production

Clifford¹,

White²

1986

New Zealand Journal of Experimental Agriculture

View full text Add to dashboard Cite

show abstract

“…PUMPHERY and MOORE (19) found that a critical sulfur concentration changed with the growth stages of alfalfa, while a critical N:S ratio was relatively constant at all growth stages. Apparent difference in constancy ofN: S ratio between rice and alfalfa is perhaps attributed to differences in proportion of vegetative part to total dry weight and patition of nitrogen and sulfur in different plant parts.…”

Section: Critical Levels Of Tissue Sulfur Content At Different Growthmentioning

confidence: 99%

Sulfur nutrition of rice

Yoshida

Chaudhry

1979

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

A solution culture experiment established critical sulfur contents or critical N: S ratios for sulfur deficiency of rice. Shoot dry weight increased linearly with increased lOgarithmic concentration of sulfur in culture solution. Two critical sulfur contents (or N: S ratios) in plant tissues were defined: critical sulfur content required to obtain maximum dry weight (DC;eo) and critical sulfur content required to obtain 50"/0 of the maximum dry weight (Dc.o).The critical sulfur contents (DCleo) in straw varied from 0.16% at tiUerina staae to 0.06% at maturity. Sinsle sulfur analysis was considered a better diagnostic tool than N: S ratio because the latter's analysis is more costly.When non-sulfur fertilizers and demineralized water were applied, sulfur deficiency was induced in potted plants on Lipa clay loam, which is not considered sulfur deficient. This experiment demonstrated the importance of sulfur supply in irrisation water as a sulfur source.Differences in natural supply of sulfur were illustrated for pot and field experiments.Additlonal Index Words: sulfur, rice.A fertilizer industry shift from sulfur-contain ing to high analysis nitrogen fertilizers appears to be triggering increased incidence of sulfur deficiency in lowland rice. In the lower Amazon Basin. sulfur deficiency occurred after two successive rice crops when urea, triple superphospha te, and potassium chloride were applied (26,27). In South Sulawesi, Indonesia, application of urea induced yellowing in lowland rice and total or partial replacement of urea with ammonium sulfate cured yellowing and increased grain yield by 12 to 45% (15). These two examples suggest that sulfur deficiency may become a serious nutritional disorder in lowland rice in the future if the present fertilizer trend continues.In addition to use of high analysis fertilizer, adoption of high yielding varieties _ and hence increased crop removal of sulfur -will aggravate the sulfur demand-suppl y relations in lowland rice. Thus, diagnosis of sulfur deficiency and better understanding of sources of sulfur in rice nutrition will be increasingly important.This paper reports studies (a) to establish a critical level of sulfur for rice growth and (b) to evaluate fertilizers and irrigation water as sulfur sources under upland and lowland soil conditions. Twelve-day-old seedlings of IR747B2-6 were transplanted to 4-liter porcelain pots with 3 seedlings per pot. Culture solution was prepared using demineralized water and analytical grade reagents according to YOSHIDA et al. (28) except sulfate salts were replaced by chlorides. Five levels of sulfur, i.e., 0.1,0.5, 1, 10, and 100 ppm were used in combination of two levels of nitrogen, i.e., 20 and 80 ppm. Sodium sulfate was the sulfur source. The pots were placed in the glasshouse. Each treatment was replicated nine times. Three pots were sampled at each of three growth stages, i.e., tillering stage, flowering, and maturity. Sampled plants were separated into leaf blades, leaf sheaths plus culms, panicles, and roots. These sep...

show abstract

“…Total S and S04-S, both expressed as percentages of the dry matter, have been used as indexes of S sufficiency in alfalfa. Critical concentrations of total S in alfalfa (M edicago sativa L.) are dependent upon stage of development (Pumphrey and Moore, 1965), but generally group around 0.20 to 0.25% S in whole tops (Mertz and Matsumato, 1956;Ensminger and Freney, 1966;Martin and Walker, 1966;Martin and Matocha, 1973;Cornforth and Sinclair, 1982). Approximately 150 Jlg/g S04-S in the second to fourth mature leaf, and 40 Jlg/g S04-S in the midstems at the bloom stage are considered critical concentrations of S04 -S under greenhouse conditions for alfalfa ).…”

Section: Introductionmentioning

confidence: 99%

Leaf analysis as a guide to sulfur fertilization of legumes

Huang

Schoenau

Elmy

1992

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

Tissue analysis is a diagnostic tool which can be used in identifying S deficiencies and predicting S fertilizer requirements of crops. A water extraction procedure for removal and measurement of inorganic sulfate in plant leaves was developed and assessed as a measure of S availability in four legume crops. Relationships between sulfate concentration and yield were determined for alfalfa (Medicago sativa L.), chickpea (Cicer arietinum L.), faba bean (Vicia faba) and lentil (Lens culinaris) grown on two Saskatchewan soils, with five rates of S fertilizer supply, in a growth chamber experiment.The sulfate concentration in the leaf tissue was measured at the time of seventh leaf and early flowering stages to estimate the current S status of the plants. The results showed significant relationships between the water extractable sulfate in the leaf and the supply of available S in the soils. The water extraction procedure is recommended for routine analyses because of its simplicity and sensitivity.

show abstract

Sulfur and Nitrogen Content of Alfalfa Herbage During Growth¹

Cited by 29 publications

References 8 publications

A sulphur response: White clover seed production

A sulphur response: White clover seed production

Sulfur nutrition of rice

Leaf analysis as a guide to sulfur fertilization of legumes

Contact Info

Product

Resources

About

Sulfur and Nitrogen Content of Alfalfa Herbage During Growth1

Cited by 29 publications

References 8 publications

A sulphur response: White clover seed production

A sulphur response: White clover seed production

Sulfur nutrition of rice

Leaf analysis as a guide to sulfur fertilization of legumes

Contact Info

Product

Resources

About

Sulfur and Nitrogen Content of Alfalfa Herbage During Growth¹