Wati Temjen

Nowadays some softwares are available like ImageJ, Petiole, Easy Leaf Area etc.

Conventional graph paper (mm graphpaper) method may be useful following the formula:-

leaf area (cm2) = leaf weight (g) of the area covered by the leaf / the leaf weight of one cm2

Following RG discussions may also be useful,

https://www.researchgate.net/post/How_do_I_calculate_leaf_area_index_at_regular_time_intervals_during_growing_season_Equations_and_literature

https://www.researchgate.net/post/What_is_the_best_general_method_for_measuring_leaf_area

https://www.researchgate.net/post/How-do-we-calculate-total-leaf-area-of-a-plant-tree-without-measuring-every-leaf-and-without-using-any-instrument

M. Manokari Thank you madam for the insight. it indeed is very helpful.

Check https://www.researchgate.net/publication/225811500_Transpiration_estimation_of_banana_Musa_sp_plants_with_the_thermal_dissipation_method

Check on this paper.

https://www.mdpi.com/2073-4395/10/9/1435/htm

check here: Article Banana Biomass Estimation and Yield Forecasting from Non-Des...