Impact of Cropping Ratios of Maize (Zea mays)-Egusi Melon (Colocynthis citrullus) and NPK Fertilizer on Soil Productivity Rating of an Ultisol of Edo State in Nigeria
2016 ◽
Vol 10
(6)
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pp. 1-8
2016 ◽
Vol 9
(6)
◽
pp. 1-13
2013 ◽
Vol 17
(3)
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