When soyabean seeds are sown in saline or alkaline lands, the germination rate is below 30%. The farmers of Tamil Nadu increase the germination rate upto 90% by treating the seeds with the leaf powder of Usil (Albizia amara). Boiled rice water can be used as an adhesive to make the leaf powder, stick to the seed.

Crop: Soya bean
Crop Family: Legumes
Crop Scientific Name: (Glycine max)
Crop Vernacular Name: Soya
Formulation: Leaf powder of usil (Albizia amara), boiled rice water
Ingredients: The leaf powder of Usil (Albizia amara) and boiled rice water

"An experiment was conducted to observe the inhibitory effects of the leaf extracts derived from Albizialebbeck (L.) Benth. on germination and growth behavior of some popular agricultural crops (receptor) of Bangladesh. Experiments were set on sterilized petridishes with a photoperiod of 24 h at room temperature of 27–30°C. The effects of the different concentrations of aqueous extracts were compared to distil water (control.). The aqueous extracts of leaf caused significant inhibitory effect on germination, root and shoot elongation and development of lateral roots of receptor plants. Bioassays indicated that the inhibitory effect was proportional to the concentrations of the extracts and higher concentration (50%–100%) had the stronger inhibitory effect whereas the lower concentration (10%–25%) showed stimulatory effect in some cases. The study also revealed that, inhibitory effect was much pronounced in root and lateral root development rather than germination and shoot growth [Uddin, Mohammad & Ahmed, Romel&Mukul, Sharif & Hossain, Mohammed. (2007). Inhibitory effects of Albizialebbeck leaf extracts on germination and growth behavior of some popular agricultural crops. Journal of Forestry Research. 18. 128-132. 10.1007/s11676-007-0025-9.]"
https://www.researchgate.net/publication/226170916_Inhibitory_effects_of_Albizia_lebbeck_leaf_extracts_on_germination_and_growth_behavior_of_some_popular_agricultural_crops

"The seed of okra (Abelmoschus esculentus L.) Moench] have slow and poor germination when seeds are sown in early spring season due to low temperature. Laboratory experiment was conducted to study the effect of seed priming using plant extract on seed quality characters of okra. Various botanical leaf extracts used like Arjuna, Bael, Harad, Bahed, Arrapu, Neem, Reetha, Amla, Tulsi, Prosopis and Cow urine on seedling quality characters of phulevimucta variety of okra. The result concluded that priming with Arrapu (Albiziaamara) Leaf Extract at (3%) for 12hrs increased the germination and seed vigour in Okra. Its exhibited high mean value for Seedling characters like seed germination percentage (96.50%), Speed of germination (09.77), root length (12.22cm), shoot length (16.39cm), seedling length (28.80), seedling fresh weight (1.03gm) and seedling dry weight (0.35gm), seed vigour index I (2427.95) and seed vigour index II (19.36)."
https://www.ijcmas.com/8-8-2019/Indrajitsingh%20P.%20Girase,%20et%20al.pdf