@article{Loan_Can_2021, title={Effects of Cover Methods and Nitrogen Levels on the Growth and Yield of Tomato}, volume={4}, url={https://vjas.vnua.edu.vn/index.php?journal=vjas&page=article&op=view&path[]=225}, DOI={10.31817/vjas.2021.4.2.03}, number={2}, journal={Vietnam Journal of Agricultural Sciences}, author={Loan, Nguyen and Can, Tran}, year={2021}, month={Aug.}, pages={1021-1033} }