Soil-solution speciation by MINEQL+4.6 model and plant uptake of Cd and Zn by barley (Hordeum vulgare L.) after application of different phosphate fertilizers

2012 ◽  
Vol 175 (4) ◽  
pp. 560-571 ◽  
Author(s):  
Ahmed Mohamed Mahdy
Keyword(s):  
Hordeum Vulgare ◽  
Soil Solution ◽  
Plant Uptake ◽  
Phosphate Fertilizers ◽  
Hordeum Vulgare L ◽  
Solution Speciation

Potassium Rate Effect on Plant Uptake and Forage Yield of Barley (Hordeum vulgare L.) Grown in an Arid Environment

2004 ◽  
Vol 3 (1) ◽  
pp. 1-6 ◽  
Author(s):  
M. Ammar Errebhi ◽  
A. Hamid AbdelGadir ◽  
H. Ben Sarhan ◽  
A. A. Jaloud
Keyword(s):  
Hordeum Vulgare ◽  
Plant Uptake ◽  
Arid Environment ◽  
Rate Effect ◽  
Forage Yield ◽  
Hordeum Vulgare L

Effect of straw amendment and plant growth on selenium transfer in a laboratory soil-plant system

1998 ◽  
Vol 78 (1) ◽  
pp. 187-195 ◽  
Author(s):  
M. Camps Arbestain
Keyword(s):  
Hordeum Vulgare ◽  
Plant Growth ◽  
Soil Solution ◽  
Agricultural Practices ◽  
Microbial Reduction ◽  
Hordeum Vulgare L ◽  
Predominant Species ◽  
Key Words Barley ◽  
Straw Amendment ◽  
Environmental Compartments

Knowledge of the transfers of selenium (Se) in the soil-plant-atmosphere environmental compartments is fundamental in assessing Se cycling through the environment. The purpose of this study was to determine the effects of straw amendments and barley (Hordeum vulgare L.) on Se cycling in soils from Kesterson Reservoir, Merced County, CA (0.68 mg soluble Se kg−1, 6.15 mg total Se kg−1), and to evaluate the feasibility of these agricultural practices as bioremediation strategies. Four treatments were evaluated: soil only, soil + straw, soil + plant, and soil + straw + plant. Straw amendments greatly reduced Se from soil solution (92–97% of initial soluble Se). Selenate [Se(VI)] was the predominant species in soil solution. Phosphate-extractable Se did not account for the decline in soluble Se. Selenium volatilized by microbes represented only 4–5% of the soluble Se removed. Highest Se removal from soil solution and highest Se volatilization rates occurred when both microbial activity and growth were maximal. Selenate microbial reduction to more insoluble Se forms is indicated as being responsible for this removal. Plants did not account for as much Se removal from soil solution as did straw amendments. Total shoot Se corresponded to 1–9% of soluble Se removal. At the end of the experiment, Se in plants represented 0.1–0.7% of total Se in the system, and the Se volatilized accounted for 0.2 to 0.5% of total Se inventory. The results obtained in this study suggest the use of straw amendments as a remediation technique for managing Se contamination at Kesterson Reservoir. Key words: Barley, selenium, soil solution, straw, volatilization

scholarly journals 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.)

1986 ◽  
Vol 66 (2) ◽  
pp. 209-216 ◽  
Author(s):  
L. D. BAILEY
Keyword(s):  
Brassica Napus ◽  
Hordeum Vulgare ◽  
Medicago Sativa ◽  
Plant Uptake ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
Canadian Prairie ◽  
Prairie Soils ◽  
S Uptake ◽  
Herbage Yield

Alfalfa (Medicago sativa), rape (Brassica napus) and barley (Hordeum vulgare) were grown in a growth chamber with and without sulphur (S) on surface samples (0–15 cm) of 17 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)s ratios and soil SO4-S, while for barley (shot blade) the relationships were significant [Formula: see text]. Herbage yields of the three crops were also significantly correlated [Formula: see text] with plant (N:S)p ratios. Soil (N:S) ratio was considered the best predictor of herbage yield because it is more stable over time than soil SO4-S and because plant (N:S)p ratio only indicates a need for future fertilization. The highest yields and S and N composition of plant tissues were obtained on soils with SO4-S concentrations greater than 12 mg kg−1 and an (N:S)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)s ratio of 9 and SO4-S concentration of 7 mg kg−1, may have sufficient S to meet the requirement of barley but not alfalfa and rape. However, soils with higher (N:S)s ratios and lower SO4-S content were deficient in S for all crops. Barley was the most responsive to applied S of the three crops, although it had the lowest concentration of S (0.15 mg S g−1 dry herbage) and highest plant (N:S)p ratio (16) at its highest yield. Rape was more responsive to applied S than alfalfa but the concentration of S in the herbage of both crops at their highest yields were similar, 0.27 and 0.26 mg S g−1 dry herbage, respectively. Both crops also had lower (N:S)p ratios than barley at the highest yield (14 (alfalfa) and 12 (rape)), reflecting their greater S uptake. Key words: Plant-available S, soil (N:S)s ratio, plant (N:S)p ratio, plant uptake of S, plant uptake of N

Ultrastructure and Senescence in an Achloroplastic Mutant of Hordeum vulgare L. cv. Dyan

1992 ◽  
Vol 50 (1) ◽  
pp. 844-845
Author(s):  
R.H.M. Cross ◽  
C.E.J. Botha ◽  
A.K. Cowan ◽  
B.J. Hartley
Keyword(s):  
Cell Wall ◽  
Hordeum Vulgare ◽  
Leaf Tissue ◽  
Ultrastructural Changes ◽  
Hordeum Vulgare L ◽  
Mesophyll Cells ◽  
Lethal Mutant ◽  
Cytoplasmic Matrix ◽  
Close Proximity ◽  
Pinocytotic Vesicles

Senescence is an ordered degenerative process leading to death of individual cells, organs and organisms. The detection of a conditional lethal mutant (achloroplastic) of Hordeum vulgare has enabled us to investigate ultrastructural changes occurring in leaf tissue during foliar senescence.Examination of the tonoplast structure in six and 14 day-old mutant tissue revealed a progressive degeneration and disappearance of the membrane, apparently starting by day six in the vicinity of the mitochondria associated with the degenerating proplastid (Fig. 1.) where neither of the plastid membrane leaflets is evident (arrows, Fig. 1.). At this stage there was evidence that the mitochondrial membranes were undergoing retrogressive changes, coupled with disorganization of cristae (Fig. 2.). Proplastids (P) lack definitive prolamellar bodies. The cytoplasmic matrix is largely agranular, with few endoplasmic reticulum (ER) cisternae or polyribosomal aggregates. Interestingly, large numbers of actively-budding dictysomes, associated with pinocytotic vesicles, were observed in close proximity to the plasmalemma of mesophyll cells (Fig. 3.). By day 14 however, mesophyll cells showed almost complete breakdown of subcellular organelle structure (Fig. 4.), and further evidence for the breakdown of the tonoplast. The final stage of senescence is characterized by the solubilization of the cell wall due to expression and activity of polygalacturonase and/or cellulose. The presence of dictyosomes with associated pinocytotic vesicles formed from the mature face, in close proximity to both the plasmalemma and the cell wall, would appear to support the model proposed by Christopherson for the secretion of cellulase. This pathway of synthesis is typical for secretory glycoproteins.

ИЗМЕНЧИВОСТЬ ЯЧМЕНЯ (Hordeum vulgare L.) РАЗНОГО ГЕОГРАФИЧЕСКОГО ПРОИСХОЖДЕНИЯ ПО ЭЛЕМЕНТАМ СТРУКТУРЫ УРОЖАЯ

2012 ◽  
pp. 33-40
Author(s):  
А.В. ЖЕЛЕЗНОВ ◽  
◽  
Н.Б. ЖЕЛЕЗНОВА ◽  
Т.В. КУКОЕВА ◽  
Н.В. БУРМАКИНА ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Hordeum Vulgare L

ВНУТРИВИДОВОЙ ПОЛИМОРФИЗМ ЯРОВОГО ЯЧМЕНЯ (Hordeum vulgare L.) ПО УСТОЙЧИВОСТИ К ДЕЙСТВИЮ СВИНЦА

2014 ◽  
pp. 78-87 ◽  
Author(s):  
А.В. ДИКАРЕВ ◽  
◽  
В.Г. ДИКАРЕВ ◽  
Н.С. ДИКАРЕВА ◽  
С.А. ГЕРАСЬКИН ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Hordeum Vulgare L

Studies on selection parameters in six rowed exotic barley (Hordeum vulgare L.) genotypes under timely sown irrigated condition

2019 ◽  
Vol 10 (3) ◽  
Author(s):  
Pravir Kumar Gupta ◽  
Ashutosh Pandey ◽  
Jitendra Kumar ◽  
Javed Bahar
Keyword(s):  
Hordeum Vulgare ◽  
Hordeum Vulgare L ◽  
Selection Parameters
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