scholarly journals The efficiency of nitrogen and sulphur fertilization on yields and value of N:S ratio for Lolium × boucheanum

2016 ◽  
Vol 61 (No. 3) ◽  
pp. 137-143
Author(s):  
B. Grygierzec ◽  
L. Luty ◽  
K. Musiał
Keyword(s):  
N:S Ratio

scholarly journals THE EFFECT OF ALTERING THE N:S RATIO ON CONSUMER ACCEPTANCE OF LEAF LETTUCE

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 666a-666 ◽  
Author(s):  
Melinda McVey McCluskey ◽  
Ellen T. Paparozzi ◽  
Susan L. Cuppett
Keyword(s):  
Sensory Evaluation ◽  
Consumer Acceptance ◽  
Color Appearance ◽  
Sensory Panel ◽  
Overall Acceptability ◽  
Grand Rapids ◽  
N:S Ratio ◽  
Hedonic Scale ◽  
Nitrogen Rates ◽  
Leaf Lettuce

Previous research on leaf lettuce has shown that altering the N:S ratio has an effect on plant color and N and S content. It appears that nitrogen rates can be decreased if known rates of sulfur are applied. The next step was to determine what effect altering the N:S ratio in lettuce had on consumer acceptance of the product. `Grand Rapids' lettuce was grown hydroponically at six rates of S (0, 7.5, 15, 30, 60, 120 ppm) and four rates of N (30, 60, 120, 240 ppm). Sensory evaluation was performed on 20 of 24 treatments. The sensory panel was composed of 12 panelists who used the nonstructured hedonic scale to evaluate each lettuce treatment on appearance, color, texture, flavor, bitter flavor, and overall acceptability. Results from the sensory evaluation indicate that differences in color, appearance, and bitter flavor were detected between treatments by the panel. Lettuce plants that received higher amounts of N in relation to S were considered less bitter in flavor and, over all, more acceptable than plants which received higher amounts of S in relation to N. These results indicate that altering the N:S ratio will affect consumer acceptance of leaf lettuce.

Sulphur fertilizer and tillage effects on early season sulphur availability and N:S ratio in canola in western Canada

2003 ◽  
Vol 83 (4) ◽  
pp. 451-463 ◽  
Author(s):  
C. A. Grant ◽  
A. M. Johnston ◽  
G. W. Clayton
Keyword(s):  
Field Studies ◽  
Conventional Tillage ◽  
Residual Effects ◽  
Western Canada ◽  
Brassica Napus L ◽  
Sulphur Concentration ◽  
Sulphur Fertilizer ◽  
Tillage System ◽  
N:S Ratio ◽  
S Fertilizers

Field studies in Manitoba, Saskatchewan and Alberta over 3 yr evaluated immediate and residual effects of source, timing and placement of S fertilizers on sulphate-S supply to canola (Brassica napus L.). The treatments were compared under conventional tillage (CT) and in the establishment years of a reduced (RT) system. Sulphate-S in the soil was measured for two weeks after seeding, using PRSTM-probes. Sulphur concentration and N:S ratio were measured in canola tissue at flowering. Tillage system had little effect on available sulphate, tissue S concentration, N:S ratio or response to S fertilization. Ammonium sulphate (AS) generally increased tissue S concentration and reduced N:S ratio with all placements, and the effects of surface-applied ammonium thiosulphate (ATS) were similar to the effects of AS. Tiger 90, a bentonite-elemental S formulation, generally produced lower S concentrations in canola tissue at flowering than did AS, and levels were similar with elemental S and Tiger 90. Both tissue S concentration and N:S ratio were good indicators of S sufficiency for canola. Sulphate carryover from AS increased tissue S concentration and decreased N:S ratio in the year following application. In contrast, increases in tissue S concentration and decreases in N:S ratio were lower with Tiger 90 than AS. The oxidation of the residual elemental S in Tiger 90 could not be relied upon to increase tissue S concentration above deficiency levels in the year following application where soil sulphate levels were low. Key words: Elemental S, bentonite S, zero tillage, N:S ratio, PRS-probes

scholarly journals THE EFFECT OF ALTERING THE N:S RATIO ON CUT ROSES

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 687b-687
Author(s):  
Ellen T. Paparozzi ◽  
Melinda McVey McCluskey ◽  
M. Elizabeth Conley ◽  
Walter W. Stroup
Keyword(s):  
Initial Data ◽  
Soil Samples ◽  
Fertilizer Treatment ◽  
Design Data ◽  
Split Plot ◽  
N:S Ratio ◽  
Nitrogen Rates ◽  
Plot Design

Previous hydroponic studies have shown that nitrogen rates applied to roses can be cut in half as long as known quantities of sulfur are added. A two-year study began in February, 1991, to determine if roses potted in a 2:1:1 mix (soil:peat:perlite) would respond similarly. Six cultivars and three treatments (300 ppm N 20-30-10, N:S at 2:1 and N:S at 4:1 with N being approx. 155 ppm) were replicated three times in a split-plot design. Data included number of flowers and length of stems cut daily. Plants were allowed to grow for 4 months, were cut back, then allowed to grow for 7 months and cut back again. After the second pruning, shoots were harvested for N and S analysis. Soil samples were also taken. Initial data, analyzed through September, indicates that across cultivars the total number of flowers produced was not influenced by the N:S treatments. Certain cultivars, however, were more productive than others. Champagne and Bridal White consistently produced more flowers than Samantha and Amorous, regardless of fertilizer treatment. Certain treatment cultivar combinations were also significant indicating that cultivar response may limit N:S recommendations.

Effects of nitrogen and different N:S ratio on yield and nutrient uptake of mustard (Sinapis alba L.)

2007 ◽  
Vol 35 (2) ◽  
pp. 201-204
Author(s):  
Andrea Balla Kovács ◽  
I. Kincses ◽  
Imre Vágó
Keyword(s):  
Nutrient Uptake ◽  
Sinapis Alba ◽  
Sinapis Alba L ◽  
N:S Ratio

Identifying sulfur deficient fields by using sulfur content; N:S ratio and nutrient stoichiometric relationships in soybean seeds

2012 ◽  
Vol 135 ◽  
pp. 107-115 ◽  
Author(s):  
Fernando Salvagiotti ◽  
Gustavo Ferraris ◽  
Alberto Quiroga ◽  
Mirian Barraco ◽  
Hugo Vivas ◽  
...  
Keyword(s):  
Sulfur Content ◽  
Soybean Seeds ◽  
N:S Ratio

The effect of sulphur deficiency on the uptake and incorporation of nitrogen in ryegrass

1985 ◽  
Vol 105 (3) ◽  
pp. 501-504 ◽  
Author(s):  
P. Millard ◽  
G. S. Sharp ◽  
N. M. Scott
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Nitrogen Content ◽  
Amino Acid Analysis ◽  
Crude Protein ◽  
Sulphur Content ◽  
Sulphur Deficiency ◽  
N:S Ratio

SUMMARYSulphur deficiency reduced the yield and sulphur content of ryegrass at the fourth cut, while increasing the nitrogen content and N:S ratio. The distribution of the forms of nitrogen was also altered, with a decrease in the proportion of nitrogen recovered as amino acids and an increase in the concentration of asparagine. Amino acid analysis showed that the concentrations of the sulphur-containing amino acids cyst(e)ine and methionine were depressed by sulphur deficiency as well as those of arginine, histidine, lysine, glycine, leucine, serine and threonine. Sulphur deficiency, therefore, decreases the quality of crude protein found in grass, as well as reducing the yield.

MINERALIZATION OF SULFUR FROM FOUR SOILS AND ITS RELATIONSHIP TO SOIL CARBON, NITROGEN AND PHOSPHORUS

1975 ◽  
Vol 55 (1) ◽  
pp. 9-14 ◽  
Author(s):  
C. G. KOWALENKO ◽  
L. E. LOWE
Keyword(s):  
Carbon Dioxide ◽  
Sodium Bicarbonate ◽  
Soil Carbon ◽  
Soil Sample ◽  
Calcium Chloride ◽  
Lipid Phosphorus ◽  
Nitrogen And Phosphorus ◽  
Initial Soil ◽  
N:S Ratio ◽  
Soil Sulfur

The mineralization of soil sulfur, as measured by calcium chloride extraction of fresh samples, was compared and discussed with carbon-dioxide-evolved, nitrogen mineralized, sodium-bicarbonate-extractable phosphate, lipid phosphorus and arysulfatase activity. The amount of sulfur mineralized after 14 wk was compared with various initial soil values, such as the form of sulfur and ratios among C, N and S. In general, the samples with larger C:S and C:N ratios resulted in lower sulfur- and nitrogen-mineralizable values; however a complex interrelationship among C, N and S was evident. A high N:S ratio (produced by addition of nitrogen) resulted in a decrease in mineralization of sulfur in the soil sample during an 8-wk incubation.

scholarly journals Genetic Mapping of QTL Associated with Seed Macronutrients Accumulation in ‘MD 96-5722’ by ‘Spencer’ Recombinant Inbred Lines of Soybean

2017 ◽  
Vol 3 (2) ◽  
pp. 224-235 ◽  
Author(s):  
Nacer Bellaloui ◽  
Laila Khandaker ◽  
Masum Akond ◽  
Stella K. Kantartzi ◽  
Khalid Meksem ◽  
...  
Keyword(s):  
Recombinant Inbred ◽  
Genetic Relationships ◽  
Recombinant Inbred Lines ◽  
Soybean Seed ◽  
Peak Position ◽  
Inbred Lines ◽  
Snp Markers ◽  
Nutrition Quality ◽  
C And N ◽  
N:S Ratio

Research of quantitative trait loci (QTL) for macronutrient accumulation in soybean seed is limited. Therefore, the objective of this research was to identify QTL related to macronutrients (N, C, S, P, K, Ca, and Mg) in seeds in 92 F5:7 recombinant inbred lines (RILs) developed from a cross between MD 96-5722 (MD) and Spencer using a total 5,376 Single Nucleotide Polymorphism (SNP) markers. A genetic linkage map based on SNP markers was constructed using the Illumina Infinium SoySNP6K BeadChip Array. The RILs were genotyped using 537 polymorphic, reliably segregating SNP markers. A total of 8 QTL for K (qPOT001-qPOT008) were identified on LGs D1b (Chr 1), N (Chr 3), A1 (Chr 5), O (Chr 10), F (Chr 13), B2 (Chr 14), and J (Chr 16). Four QTL for Mg (qMAG001-qMAG004) were identified on LGs N (Chr 3), A1 (Chr 5), J (Chr 16), and G (Chr 18). One QTL for P (qPHO001), one for C on LG J (Chr 16), one for N (qNIT001) and S (qSUL001) on the same LG J (Chr 16), and one QTL for Ca (qCAL001) on LG G (Chr 18). K and Mg QTL were clustered together on LG A1 (Chr 5) with a peak position of 9.50 cM and  LOD support interval of 8.50-9.50 cM. Similar observation was noticed for P, K, Mg, C, N, and S, where the QTL were clustered on LG J (Chr 16) with peak position of 11 cM for K, P, and S, and 10 cM for C and N, and 12 cM for Mg. The LOD support intervals for all these clustered QTL were between 8.90 and 12.30 cM. The QTL clustering of these nutrients suggests possible common physiological and genetic relationships, suggesting possible similar metabolic processes and pathways  for these nutrients. The inverse relationships between N:S ratio and all nutrients suggest possible use of N:S ratio as a measure for higher nutrients accumulation in seed. Since most of QTL identified in this study were not previously reported, this research will further help breeders to improve nutrient accumulation in seeds and contribute to our understanding of the physiological and genetic bases of seed nutrition quality.

scholarly journals Marandu palisadegrass growth under nitrogen and sulphur for replacing signal grass in degraded tropical pasture

2010 ◽  
Vol 67 (5) ◽  
pp. 570-578 ◽  
Author(s):  
Fabiano Daniel De Bona ◽  
Francisco Antonio Monteiro
Keyword(s):  
Organic Matter Content ◽  
Matter Content ◽  
High Yield ◽  
Forage Production ◽  
Brachiaria Brizantha ◽  
Brachiaria Decumbens ◽  
Total N ◽  
N:S Ratio ◽  
Signal Grass ◽  
N Rates

The degradation of Brachiaria decumbens Stapf. (Signal grass) pastures has resulted in a big problem for the Brazilian cattlemen. The objective of this study was to assess fertilization with nitrogen (N) and sulphur (S) rates on yield of Brachiaria brizantha (Hochst. ex A. Rich.) Stapf. cv. Marandu (Marandu palisadegrass) under establishment in a soil supporting degrading pasture of Brachiaria decumbens Stapf. Additionally, the N and S concentrations in plant tissue and soil according to the rates of these nutrients were evaluated. The study was carried out in a greenhouse in pots filled with an Entisol with high organic matter content. Five rates of N (0; 100; 200; 300 and 400 mg dm-3) and five rates of S (0; 10; 20; 30 and 40 mg dm-3) were tested in a 5² fractionated factorial. Plants were harvest three times. The interaction N rates × S rates was significant for the variables leaf area, tiller number, shoot dry matter, N concentration and N:S ratio in plants, and total N and sulphur-sulphate in the soil in at least one of the three growth periods of Marandu palisadegrass in establishment. The supply of both S and N to reach the N:S ratio about 10:1 in the fertilization promoted high yield, adequate N and S concentrations for plant metabolism and forage production, as well as kept and/or raised the soil fertility in relation to these nutrients.

scholarly journals Spinach and pepper response to nitrogen and sulphur fertilization

2011 ◽  
Vol 50 (No. 7) ◽  
pp. 303-308 ◽  
Author(s):  
M. Smatanová ◽  
R. Richter ◽  
J. Hlušek
Keyword(s):  
Dry Matter ◽  
Nitrogen Concentration ◽  
Essential Amino Acids ◽  
Dry Matter Production ◽  
Nitrate Content ◽  
Matter Production ◽  
Applied Dose ◽  
N:S Ratio ◽  
Positive Effect

A vegetation pot experiment was established to explore the effect of two doses of nitrogen (0.6 and 0.9 gN in the form of ammonium sulphate) and two doses of sulphur (20.6 and 30.6 mg/kg of soil) on the yields and quality of spinach and pepper in comparison with a natural level (7.85 mg/kg). The results of the experiments confirmed that the application of sulphur by means of (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> in combination with nitrogen had a positive effect on yields and also on the quality of the vegetables. In the sulphur-free variants of spinach the effect was statistically significant and also when the levels of S in the soil were higher. Lower doses of nitrogen under increased levels of sulphur increased the yields statistically significantly (on average by 47%) and the sulphur concentration in the plants increased. The N:S ratio became narrower in proportion with the level of sulphur, particularly under a lower N level. The nitrate content in spinach corresponded with the applied dose of nitrogen and the nitrogen concentration. The sulphur level did not influence the content of C vitamin, but had a positive effect on the content of the essential amino acids cysteine and methionine. A mean level of S<sub>1</sub> in combination with a N<sub>1</sub> dose significantly increased pepper yields, narrowed the N:S ratio and was reflected in dry matter production per 1 g of N. The highest pepper yields were achieved with a dose of S<sub>1</sub>, which resulted in the highest dry matter production in the fruit per1 g of N under both levels of N. At the same time increasing the sulphur level reduced the content of nitrate and increased the level of cysteine from 0.11 to 0.305 g/kg.

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