TY  - JOUR
AU  - Mirshekari, Bahram
TI  - Effects of red root pigweed, Amaranthus retroflexuxs L. interference times on yield of cowpea, Vigna unguiculata L.
JO  - Agroecology Journal
VL  - 4
IS  - 2
SP  - 71
EP  - 81
PY  - 2008
DO  - 
ER  -