@article{khan_lone_2005,  title={Effects of early and late season defoliation on photosynthesis, growth and yield of mustard (Brassica juncea L.)},  volume={17},  ISSN={1677-0420},  url={https://doi.org/10.1590/S1677-04202005000100015},  DOI={10.1590/S1677-04202005000100015},  number={1},  journal={Brazilian Journal of Plant Physiology},  publisher={Brazilian Journal of Plant Physiology},  author={Khan, N.A. and Lone, P.M.},  year={2005},  month={Jan},  pages={181–186} }