Determination of Optimum Rate of Nitrogen, Phosphorus, Potassium and Boron for Leaf and Seed Yield of Lettuce. Bangladesh J. Agric. Res [Internet]. 2022 Dec. 15 [cited 2026 Jun. 30];45(4):455-71. Available from: https://banglajol.info/index.php/BJAR/article/view/63251