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Controlling manganese deficiency in sugarbeet with foliar sprays

Published online by Cambridge University Press:  27 March 2009

P. J. Last  and
K. M. R. Bean
P. J. Last
Affiliation:
Broom's Barn Experimental Station, Higham, Bury St. Edmunds, Suffolk IP28 6NP, UK.
K. M. R. Bean
Affiliation:
Broom's Barn Experimental Station, Higham, Bury St. Edmunds, Suffolk IP28 6NP, UK.
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Summary

Field experiments in 1987 and 1988 on peaty-loam, Mn-deficient soils of the Adventurers series in Cambridgeshire, UK, tested the response of sugarbeet to three forms of manganese fertilizer supplied as foliar sprays. The influence of a wetter and an adjuvant on manganese absorption and growth was also investigated.

Cutonic and chelated forms of Mn, when applied at standard rates, were inefficient at increasing Mn concentrations in plants and alleviating deficiency symptoms during early summer. Mn concentrations in foliage increased rapidly after spraying with manganese sulphate, and most of the deficiency symptoms disappeared. These benefits were usually enhanced when manganese sulphate sprays were used with an adjuvant.

Averaged over both years, yield without Mn was 8·83 t sugar/ha; the largest yield, 9·56 t/ha, was obtained with manganese sulphate plus adjuvant. Smaller benefits were obtained with the other forms of Mn. The adjuvant, when used with chelated Mn, appeared to depress sugar yields in both years. The likelihood of reducing the number of sprays required to control Mn deficiency on Fen soils was improved by using an adjuvant with manganous sulphate sprays.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 116 , Issue 3 , June 1991 , pp. 351 - 358
Copyright
Copyright © Cambridge University Press 1991

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References

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