Mansukhlal Shambhubhai Pethan from the Dhorajitaluka of the Rajkot district in Gujarat uses a unique method to increase productivity of lemon crops. He dissolves 100 ml of lemon juice in 2 L of water and sprays his lemon trees with this solution in such a way that all leaves become wet. This has resulted in greater productivity of lemons according to him. He has not observed any negative effects of this practice.
Crop: Lemon
Crop Family: Citrus
Crop Scientific Name: (Citrus limon)
Crop Vernacular Name: Nimbu
Formulation: Liquid solution with 100 ml of lemon juice in 2 L of water
Ingredients: Lemon juice and water
"From the above study, lemon juice growth regulators had significant influence on three varieties from the potatoes in vitro. It gave the best response the Zhongshu 20 variety significant surpassed from Zhongshu 3 and Atlantic varieties. As 3 ml/Llemon juice concentration gave the best response for of the studied characteristics. Therefore, recommend the addition of lemon juice for MS media to an increase in growth, and cost less productivity for MS media." [Hassen, Al-Zubaidi. (2014). EFFECTS OF LEMON JUICE ON PLANT GROWTH FOR DIFFERENT VARIETIES OF POTATO (SOLANUM TUBEROSUML.) IN VITRO. 2.]
https://www.researchgate.net/publication/328080828_EFFECTS_OF_LEMON_JUICE_ON_PLANT_GROWTH_FOR_DIFFERENT_VARIETIES_OF_POTATO_SOLANUM_TUBEROSUML_IN_VITRO