Photosynthetic pigments accumulation and some growth indices of cowpea, maize and tomato in response to interspecific and intraspecific competition stress
Ezekiel Dare Olowolaju, Adekunle Ajayi Adelusi
Sciences in Cold and Arid Regions . 2017, (2): 120 -126 .  DOI: 10.3724/SP.J.1226.2017.00120