Selenium concentration in plant material, drainage and surface water as influenced by Se applied to barley foliage in a barley – red clover – potato rotation

MacLeod, John; Gupta, Umesh C.; Milburn, P.; Sanderson, J. B.

doi:10.4141/s97-069

Cited by 20 publications

(11 citation statements)

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“…Foliar application to barley at 10 and 20 g Se ha -1 , as sodium selenate, increases the Se contents of barley grain (MacLeod et al, 1998). Morever, a stimulatory effect of foliar application of Se on nitrogen assimilation has been reported for barley (Aslam et al, 1990), however, there is few published work concerning the expression of selenium effects on dry matter accumulation, protection against the oxidative stress and regulation the water status of Hordeum vulgare L. (barley).…”

Section: Introductionmentioning

confidence: 99%

Effect of drought stress and selenium spraying on photosynthesis and antioxidant activity of spring barley / Učinek sušnega stresa in škropljenja s selenom na fotosintezo in antioksidativno aktivnost jarega ječmena

Habibi¹

2013

Acta Agriculturae Slovenica

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This paper reports the effects of selenium (Se) application on some physiological characteristics of barley (Hordeum vulgare L. cv. Rihane-03) exposed to drought stress. Foliar application to barley at 30 g selenium ha -1 , as sodium selenate, increased significantly shoot dry weight and relative water content in well-watered plants. A remarkable reduction in dry weight of water-stressed plants was associated with significant decrease in maximal efficiency of PSII (F v /F m ), stomatal conductance (g s ) and net CO 2 assimilation rate (A). Activity of antioxidant enzymes was increased by drought stress significantly. Amounts of malondialdehyde (MDA) and hydrogen peroxide (H 2 O 2 ) remained unchanged in Sesupplemented water-deficit plants obviously because of an efficient scavenging following significant enhancement of catalase (CAT) and glutathione peroxidase (GSH-Px) activities. These results indicate that an application of selenium was favorable for biomass accumulation of barley plants under well-watered conditions. However, it did not significantly affect dry matter accumulation under drought stress, but Se-supplemented water-deficit plants exhibited better protection from oxidative damage because of higher CAT and GSH-Px activities and lower level of lipid peroxidation. These results suggest that selenium application can improve antioxidant defense system under drought stress conditions, and it may be recommended for arid and semiarid regions.

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Section: Introductionmentioning

confidence: 99%

Effect of drought stress and selenium spraying on photosynthesis and antioxidant activity of spring barley / Učinek sušnega stresa in škropljenja s selenom na fotosintezo in antioksidativno aktivnost jarega ječmena

Habibi¹

2013

Acta Agriculturae Slovenica

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“…Application of Se at up to 50 g Se ha -1 or higher should not pose any toxic effect in water or to the bird or aquatic life. MacLeod et al (1998), in a study on a fine sandy loam soil, reported that a rate of 20 g Se ha -1 produced Se levels in ground water which were 40 to 100 times less than levels considered toxic. Therefore, doubling the For personal use only.…”

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confidence: 98%

Relationship between soybean seed selenium and harvested grain selenium

Gupta¹,

MacLeod²

1999

Can. J. Soil. Sci.

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. 1999. Relationship between soybean seed selenium and harvested grain selenium. Can. J. Soil Sci. 79: [221][222][223]. Field experiments were conducted on sandy loam soils in Prince Edward Island (PEI) with two cultivars of soybeans at two locations to determine the relationship between Se concentration in the seed sown and the Se concentration found in the harvested soybean crop. Seeds containing a range of Se from 0.78 to 38.5 mg kg -1 were used. These variable concentrations of seed Se were obtained in field experiments by varying the rates of seed and foliar applied Se. Grain Se concentration increased with increased Se concentration in the planted seed. A high proportion of the variation in Se concentration in the harvested soybean crop was explained by variation in the Se content of the planted seed (R 2 = 0.98). The regression was calculated using averages of cultivars for both locations. From the regression equation it could be predicted that planting seed containing 24 mg Se kg -1 would produce a soybean crop containing 0.5 mg Se kg -1 . When used at 200 kg soybean per tonne ration this would provide a Se concentration of 0.1 mg kg -1 assuming negligible contributions from other ingredients. Selenium concentration of 0.1 mg kg -1 in animal ration is considered adequate to protect livestock from Se deficiency diseases.Key words: Podzol soils, seed-applied Se, grain Se Gupta, U. et MacLeod, J. A. 1999. Rapport entre la teneur en sélénium de la graine de semence de soja et celle de la graine récoltée. Can. J. Soil Sci. 79: 221-223. Des expériences au champ ont été réalisées dans des loams sableux à deux emplacements de l'Île-du-Prince-Édouard pour établir le rapport entre la concentration de Se dans la graine de semence de soja et celle observée dans les graines récoltées. Nous utilisions des graines de semence contenant des teneurs en Se variant de 0,78 à 38,5 mg kg -1 . Ces concentrations avaient été obtenues en expérience au champ en variant les densités de semis ainsi que la quantité de Se apportée à la culture par les semences et par les traitements foliaires. La concentration Se du grain récolté augmentait en fonction de celle de la graine de semence. Une forte proportion de la variation de concentration Se observée dans la récolte s'expliquait par celle utilisée dans les graines de semence (R 2 = 0,98). La régression était calculée sur les moyennes des cultivars utilisés aux deux endroits. L'équation de régression permettait de prédire que des taux de 24 mg Se kg -1 dans les semences se traduiraient par des taux de 0,5 mg Se kg -1 dans la recolte. Au taux d'incorporation de 200 kg de soja par tonne d'aliment, cela donnerait une concentration de Se de 0,1 mg par kg d'aliment, tenant compte des apports négligeables venant des autres composantes de la ration. Une telle concentration dans la ration est jugée satisfaisante pour protéger les bestiaux contre les maladies de carence de Se.

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“…Foliar application of Se in the form of Na 2 SeO 3 under various crops is stated by MacLeod et al (1998) and Cao et al (2001). Differences between essential and toxic rates of Se are very narrow (Tan et al 2002, Fargašová 2004, Fargašová et al 2006.…”

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confidence: 99%

Effect of selenium foliar application on its content in winter wheat grain

Ducsay¹,

Ložek²

2006

Plant Soil Environ.

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The effect of foliar application of graduated Se rates (0.5, 1.0, 10 and 20 g Se/ha) on the winter wheat grain yield and Se accumulation in grain was investigated in the accurate field fertilization experiment. Selenium fertilization was realized together with the application of liquid fertilizer DAM-390 (30 kg N/ha) in the growth stage of the 6 th leaf (Zadoks = 29). Applied treatments of Se fertilization did not influence the yields of grain. These yields fluctuated within the range of from 5.98 to 6.08, 5.65 to 5.71, and 7.78 to 8.04 t/ha of grain in the years 1999, 2000 and 2001, respectively. Highly significant lower grain yields in the year 2000 comparing to the other experimental years were caused by unfavorable weather conditions. Both the rates of 10 and 20 g Se/ha highly significantly increased Se accumulation in grain in all experimental years. The average Se content in grain dry matter was 0.045 mg/kg under unfertilized treatment and with the Se rates of 10 g and 20 g/ha it increased to the value of 0.088 and 0.145 mg/kg, respectively. The total offtake of Se by grain yield increased in the similar way. It results from the experiment that the rate of 10 g Se/ha is sufficient for achieving the required Se content in winter wheat grain.

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Selenium concentration in plant material, drainage and surface water as influenced by Se applied to barley foliage in a barley – red clover – potato rotation

Cited by 20 publications

References 19 publications

Effect of drought stress and selenium spraying on photosynthesis and antioxidant activity of spring barley / Učinek sušnega stresa in škropljenja s selenom na fotosintezo in antioksidativno aktivnost jarega ječmena

Effect of drought stress and selenium spraying on photosynthesis and antioxidant activity of spring barley / Učinek sušnega stresa in škropljenja s selenom na fotosintezo in antioksidativno aktivnost jarega ječmena

Relationship between soybean seed selenium and harvested grain selenium

Effect of selenium foliar application on its content in winter wheat grain

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