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Effects of nitrogen fertilizer under foliar spraying of humic acid on yield and yield components of cowpea (Vigna unguiculata).

Ebrahim Azarpour, Reza Khosravi Danesh, S. Mohammadi, Hamid Reza Bozorgi, Maral Moraditochaee

World Applied Sciences Journal · 2011 · 18 citations · 0 references

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