Seeds of cluster bean (Cyamopsis tetragonoloba) are sown along with cotton (Gossypium hirsutum), to enhancing the growth of cotton (Gossipium hirsutum) in the hardened irrigated soils. Generally, the irrigated soils become hard and resist successful coming out of germinated seedlings in the field. So to overcome the problem of growth of cotton (Gossipium hirsutum), one kilogram seeds of cluster bean (Cyamposis tetragonoloba) are mixed with 10 kg cotton (Gossipium hirsutum) seeds while sowing. The cluster bean (Cyamposis tetragonoloba) seeds grow faster and open ups the space for cotton (Gossipium hirsutum) seedling to come out of the soil successfully, so that the cotton (Gossipium hirsutum) seeds can easily grow up. This reduces the problem of gap filling and the practice is more common in black sticky soil. Despite of the non-availability of respondents this method is known to many villagers and hence it is true
Crop: Cotton
Crop Family: Malvaceae
Crop Scientific Name: (Gossypium arboreum)
Crop Vernacular Name: Ruyi
Ingredients: Cluster bean (Cyamopsis tetragonoloba)
Traditionally, guar is used for human consumption and cattle feed in India, but it is also an excellent soil-improving crop that fits well into crop rotations. Throughout the world, guar has been in rotation with wheat, cotton and sorghum. Studies have demonstrated that guar has the potential to add over 100 pounds of nitrogen per acre in a single growing season. Texas cotton growers have measured a 15 percent increase in yield following guar rotation without the need for nitrogen application (Stafford and Lewis, 1975; Rogers and Stafford, 1976).
PAS 2: "Guar (Cyamopsis tetragonoloba (L.) Taub.)is a legume of unusual industrial importance due to increased utilization of Guar gum, ‘Guran,’ in numerous modern manufacturing and food processes. Guar has high tolerance of drought and inhibitory soil characteristics and has been utilized for many centuries within the subhumid regions of the Indo‐Pakistan subcontinent. Nodulation, nitrogen fixation, and yields of high protein seed with desirable Guran content are improved by favorable soil fertility. Plant growth, seed yields, and nodulation are influenced by plant population density. [Soil fertility effects on nodulation, nitrogen fixation, and yields of guar, (Cyamopsis tetragonoloba (L.) Taub.), grown on a typiceutrustox]"
https://www.tandfonline.com/doi/abs/10.1080/01904168909364014