Volatile losses of sulphur from oven drying lucerne (medicago sativa l.): Effects of sulphur, nitrogen, phosphorus and potassium supply

Grundon N.J. and Asher C.J. (1985) Volatile losses of sulphur from oven drying lucerne (medicago sativa l.): Effects of sulphur, nitrogen, phosphorus and potassium supply. Journal of Plant Nutrition, 8 9: 833-845. doi:10.1080/01904168509363388


Author Grundon N.J.
Asher C.J.
Title Volatile losses of sulphur from oven drying lucerne (medicago sativa l.): Effects of sulphur, nitrogen, phosphorus and potassium supply
Journal name Journal of Plant Nutrition   Check publisher's open access policy
ISSN 1532-4087
Publication date 1985-09-01
Sub-type Article (original research)
DOI 10.1080/01904168509363388
Volume 8
Issue 9
Start page 833
End page 845
Total pages 13
Subject 1102 Cardiovascular Medicine and Haematology
1314 Physiology
Abstract Lucerne was grown in nutrient solutions at adequate and “deficient” levels of sulphur, nitrogen, phosphorus or potassium. Volatile losses of sulphur were then measured when shoots and roots were oven dried at 80°C for 48 hours. Small but significant losses of sulphur occurred during oven drying. Losses from shoots ranged from 4.2 to 13.9 ugS/g dry weight, which represented from 0.38 to 0.66% of the total sulphur content of the shoot. Losses from roots ranged from 12.0 to 47.8 ugS/g dry weight, representing 0.82 to 1.77% of the total sulphur content of the root. Decreases in supply of nitrogen, phosphorus, potassium or sulphur generally decreased the amount of volatile sulphur lost by oven drying shoots. Losses from roots generally decreased when supply of sulphur decreased, but increased when nitrogen and potassium supply decreased, and were generally unaffected by phosphorus supply. The organic sulphur concentration in the tissue was linearly correlated with absolute losses of sulphur (r = 0,799 for shoots; r = 0.822 for roots), the amount of sulphur lost per unit dry weight (r = 0.469 for shoots; r = 0.381 for roots) and the percentage of the total sulphur released as volatile sulphur (r= 0.937 for shoots; r = 0.970 for roots). By contrast, the total sulphur concentration in the tissue was linearly correlated only with the amount of sulphur lost per unit dry weight (r = 0.704 for shoots; r = 0.723 for roots).
Keyword alfalfa
lucerne
nitrogen
organic sulphur
oven drying
phorphorus
potassium
sulphur
Volatile sulphur losses
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 13 Sep 2016, 14:47:20 EST by System User