Improving sustainable production of maize on upland soils of the Democratic People's Republic of Korea

Jeffrey Evans; J.N. Jo; Mark Conyers; Y.G. Mun; Philip Eberbach; S.S. Paek; Y.J. Ri; S.C. Tok Ko; Beverley Orchard; Y.A. Ryang; D.Y. Jong; T Kim; Edwin Wolfe

doi:10.1080/10440046.2011.620228

Improving sustainable production of maize on upland soils of the Democratic People's Republic of Korea

Jeffrey Evans, J.N. Jo, Mark Conyers, Y.G. Mun, Philip Eberbach, S.S. Paek, Y.J. Ri, S.C. Tok Ko, Beverley Orchard, Y.A. Ryang, D.Y. Jong, T Kim, Edwin Wolfe

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Abstract

Maize production in the Democratic People's Republic of Korea is limited by soil infertility. Trials were established at two Co-operative Farms to quantify the yield response of maize to fertilizer and to vetch green manure. Crop land is precious so the vetch had to be integrated either by a short growth period prior to the crop in spring, or risking an autumn sowing for growth over winter. Maize grain yield was linearly related to the amount of vetch incorporated before maize at an annualised rate of 77 to 121 kg grain per fresh weight tonne of vetch manure. The N fertiliser substitution value was about 60 kg N ha-1 as urea. This response may be increased by adopting more cold-tolerant vetch (or alternative legumes), and safeguarding vetch from villager's livestock.

Original language	English
Pages (from-to)	404-422
Number of pages	19
Journal	Agroecology and Sustainable Food Systems
Volume	36
Issue number	4
DOIs	https://doi.org/10.1080/10440046.2011.620228
Publication status	Published - Apr 2012

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10.1080/10440046.2011.620228

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Evans, J., Jo, J. N., Conyers, M., Mun, Y. G., Eberbach, P., Paek, S. S., Ri, Y. J., Tok Ko, S. C., Orchard, B., Ryang, Y. A., Jong, D. Y., Kim, T., & Wolfe, E. (2012). Improving sustainable production of maize on upland soils of the Democratic People's Republic of Korea. Agroecology and Sustainable Food Systems, 36(4), 404-422. https://doi.org/10.1080/10440046.2011.620228

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abstract = "Maize production in the Democratic People's Republic of Korea is limited by soil infertility. Trials were established at two Co-operative Farms to quantify the yield response of maize to fertilizer and to vetch green manure. Crop land is precious so the vetch had to be integrated either by a short growth period prior to the crop in spring, or risking an autumn sowing for growth over winter. Maize grain yield was linearly related to the amount of vetch incorporated before maize at an annualised rate of 77 to 121 kg grain per fresh weight tonne of vetch manure. The N fertiliser substitution value was about 60 kg N ha-1 as urea. This response may be increased by adopting more cold-tolerant vetch (or alternative legumes), and safeguarding vetch from villager's livestock.",

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author = "Jeffrey Evans and J.N. Jo and Mark Conyers and Y.G. Mun and Philip Eberbach and S.S. Paek and Y.J. Ri and {Tok Ko}, S.C. and Beverley Orchard and Y.A. Ryang and D.Y. Jong and T Kim and Edwin Wolfe",

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AU - Eberbach, Philip

AU - Paek, S.S.

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AU - Tok Ko, S.C.

AU - Orchard, Beverley

AU - Ryang, Y.A.

AU - Jong, D.Y.

AU - Kim, T

AU - Wolfe, Edwin

N1 - Imported on 12 Apr 2017 - DigiTool details were: month (773h) = April, 2012; Journal title (773t) = Journal of Sustainable Agriculture: innovations for the long-term and lasting maintenance and enhancement of agricultural resources, production and environmental quality. ISSNs: 1044-0046;

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AB - Maize production in the Democratic People's Republic of Korea is limited by soil infertility. Trials were established at two Co-operative Farms to quantify the yield response of maize to fertilizer and to vetch green manure. Crop land is precious so the vetch had to be integrated either by a short growth period prior to the crop in spring, or risking an autumn sowing for growth over winter. Maize grain yield was linearly related to the amount of vetch incorporated before maize at an annualised rate of 77 to 121 kg grain per fresh weight tonne of vetch manure. The N fertiliser substitution value was about 60 kg N ha-1 as urea. This response may be increased by adopting more cold-tolerant vetch (or alternative legumes), and safeguarding vetch from villager's livestock.

KW - Open access version available

KW - Cropping system

KW - Maize

KW - Nitrogen fertiliser

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DO - 10.1080/10440046.2011.620228

M3 - Article

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JO - Agroecology and Sustainable Food Systems

JF - Agroecology and Sustainable Food Systems

IS - 4

ER -

Improving sustainable production of maize on upland soils of the Democratic People's Republic of Korea

Abstract

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