Effect of sulphur fertilization on the nitrogen-sulphur relationships in alfalfa (Medicago sativa L. Pers.)

Aulakh, M. S.; Dev, G.; Arora, B. R.

doi:10.1007/bf00011130

Cited by 26 publications

(20 citation statements)

References 11 publications

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“…Our findings are consistent with data obtained for other legumes (DeBoer and Duke 1982;Zhao et al 1999;Scherer and Lange 1996). N and S are generally accumulated in proportion similar to those incorporated into proteins and S deficiency decreases protein synthesis, resulting in free amino acid accumulation (Dijkshoorn and Van Wijk 1967;Aulakh et al 1976;Karmoker et al 1991). Scherer and Lange (1996) postulated that these amino acids could have some feed-back repression on N 2 fixation.…”

Section: Fertilisation Effects On Sulphur and Nitrogen Acquisitionsupporting

confidence: 93%

Functional plasticity of Trifolium repens L. in response to sulphur and nitrogen availability

Varin¹,

Lemauviel‐Lavenant²,

Cliquet

et al. 2008

Plant Soil

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Varin, S., Lemauviel-Lavenant, S., Cliquet, J. B., Diquelou, S., Michaelson-Yeates, T. P. T. (2009). Functional plasticity of Trifolium repens L. in response to sulphur and nitrogen availability. Plant and Soil, 317, (1-2), 189-200. IMPF: 02.52 RONO: 1330 2406Recent control of atmospheric SO2 pollution is leading to important soil sulphur impoverishment. Plasticity could be a mechanism allowing species to adapt to this rapid global change. Trifolium repens L. is a key grassland species whose performances in community are strongly linked to nitrogen availability. Plasticity of three white clover lines contrasting in their ability to use atmospheric N2 or soil N was assessed by analysing a set of functional traits along a gradient of nitrogen and sulphur fertilisation applied on a poor soil. White clover traits showed high morphological and physiological plasticity. Nitrogen appeared to be the most limiting factor for the VLF (Very Low Fixation) line. S was the element that modulated the most traits for the nitrogen fixing lines NNU (Normal Nitrate Uptake) and LNU (Low Nitrate Uptake). As expected, N fertilisation inhibited white clover fixation, but we also observed that N2 fixation was enhanced when S was added. S fertilisation increased nodule length as well as the proportion of nodules containing leghaemoglobin. S fertilisation, with a direct effect and an indirect effect through N2 fixation, increases white clover performances particularly with regards to photosynthesis and potential vegetative reproduction. The important plasticity in response to S availability should allow it to adapt to a large range of abiotic conditions, but its sensitivity to S nutrition would be a disadvantage for competition in a situation of soil sulphur impoverishment. In contrast, S fertilisation could help maintain this species when nitrogen status is against it.Peer reviewe

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Section: Fertilisation Effects On Sulphur and Nitrogen Acquisitionsupporting

confidence: 93%

Functional plasticity of Trifolium repens L. in response to sulphur and nitrogen availability

Varin¹,

Lemauviel‐Lavenant²,

Cliquet

et al. 2008

Plant Soil

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“…Scherer and Lange (1996) and Habtemichial et al (2007) found that S application increased nodule number and nodule fresh weight for a range of legume species (Medicago sativa, Trifolium pratense, Trifolium repens, Vicia faba and Pisum sativum), especially by enhancing root growth. Moreover, several authors suggested that S limitation triggers an increase in amino-acid content in plant tissue, which may subsequently down-regulate BNF (Dijkshoorn and Van Wijk 1967;Janssen and Vitosh 1974;Aulakh et al 1976;Scherer and Lange 1996). Therefore, a feed-back regulation by internal soluble reduced N (e.g.…”

Section: Sulphur Supplymentioning

confidence: 98%

Can we understand and predict the regulation of biological N2 fixation in grassland ecosystems?

Soussana

Tallec

2009

Nutr Cycl Agroecosyst

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We discuss results from controlled environment studies including mesocosms, grazing experiments and long term field experiments which show how biological N 2 fixation in legume based systems is tightly coupled to the N demand at scales ranging from the individual plant to the grassland ecosystem. We further test the consequences of this hypothesis of a feedback regulation of biological N 2 fixation by N demand with a mechanistic model linking plant community dynamics and ecosystem functioning. Results confirm the heuristic power of this hypothesis which accounts for a number of observations concerning changes in the relative abundance and N 2 fixation rate of legumes in managed grasslands. Then we show how nitrogen and carbon fluxes are affected by plant-plant (e.g. competition and facilitation), plant-soil and plant-herbivore interactions and by climate and management changes.

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“…Mineral nutrition, especially nitrogen (N) and S, are major factors affecting growth, yield, and quality of mustard (Aulakh, Dev, and Arora 1976;Aulakh, Parisha, and Sahota 1980;Ahmad et al 1998;Fodor and Kadlicskó 2006).…”

Section: Introductionmentioning

confidence: 99%

Effect of Application of Nitrogen and Different Nitrogen–Sulfur Ratios on the Quality and Quantity of Mustard Seed

Kovács

Kincses

Vágó

et al. 2009

Communications in Soil Science and Plant Analysis

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A greenhouse experiment was conducted on a calcareous chernozem soil to investigate the effects of nitrogen (N) and sulfur (S) fertilization and their ratios on the yield and quality of white mustard (Sinapis alba L.). Four levels of N [0.5, 1, 1.5, and 2 g pot 21 N as ammonium nitrate (NH 4 NO 3 ) and ammonium phosphate (NH 4 H 2 PO 4 )] in combination with three levels of applied N-S ratios [8, 4, 2; S as potassium sulfate (K 2 SO 4 ) and sodium sulphate (Na 2 SO 4 )] were tested as treatments.Results indicated that a significant response to seed yield was observed for N and S application. Maximum yield, 24.8 g pot 21 , was found when full doses of N and S were applied. Increasing N supply from 0.5 g pot 21 to 1 g pot 21 had little increasing effect in the oil content of the seed. Higher application of N doses (.1 g pot 21 ) decreased these values significantly. The maximum oil content (28%) was achieved with the 1 g N pot 21 treatment; the lowest values were observed in the pots applied with the highest N doses.Changes in the N content of the seed and straw showed a statistically significant increase with increasing N and S fertilization. Highest values in the seed and straw (5.96% and 0.87%, respectively) were observed by applying highest N and S doses. Seed and straw S levels were also observed to increase with increasing N rates and decreasing N-S ratio. 453Nitrogen doses significantly improved the quantities of essential amino acids with the exception of threonine, tyrosine, phenylalanine, and methionine. The amounts of these amino acids decreased with increasing N supply. When the N-S ratio decreased by increasing S, the quantities of valine, isoleucine, leucine, lysine, methionine, and cysteine increased significantly and the amount of tyrosine decreased.The quantities of nonessential amino acids with the exception of proline, histidine, and glycine increased with increasing N doses. In contrast, N rates decreased the amount of glycine. Decreasing the N-S ratio lowered the proline and arginine contents. The total amounts of essential amino acids slightly increased with increasing N rates and decreasing N-S ratio.

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Effect of sulphur fertilization on the nitrogen-sulphur relationships in alfalfa (Medicago sativa L. Pers.)

Cited by 26 publications

References 11 publications

Functional plasticity of Trifolium repens L. in response to sulphur and nitrogen availability

Functional plasticity of Trifolium repens L. in response to sulphur and nitrogen availability

Can we understand and predict the regulation of biological N2 fixation in grassland ecosystems?

Effect of Application of Nitrogen and Different Nitrogen–Sulfur Ratios on the Quality and Quantity of Mustard Seed

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