@ARTICLE {ISHIKAWA:2020, title = {Visual observation of cowpea pod elongation to predict nitrogen accumulation in immature seeds}, author = {Ishikawa, H. and Ikazaki, K. and Iseki, K. }, journal = {Plant Production Science}, year = {2020}, pages = {1--6}, issn = {1343-943X}, url = {https://doi.org/10.1080/1343943X.2020.1828949}, doi = {10.1080/1343943x.2020.1828949}, }