The Impact of Irrigation Intervals and NPK/Yeast on the Vegetative Growth Characteristics and Essential Oil Content of Lemongrass

The growth and quality of medicinal plants are greatly affected by environmental stress, with over half the world’s agricultural land facing water shortages. This research was conducted two seasons in 2018 2019 aimed to investigate influence varying irrigation intervals partial replacement mineral fertilizers biofertilizer (yeast) on growth, yield, essential oil content lemongrass. study also looked at effect substitution NPK fertilizer yeast lemongrass’s ability withstand deficit stress. results showed that reducing levels led a decline characteristics relative leaf greenness, which accompanied an increase proline percentage. These findings suggest lemongrass is sensitive drought requires adequate nitrogen fertilization. However, extending improvement content. To achieve high yield maintain productivity while considering factors, it recommended reduce 50–75% combined biofertilizer, space every 10–15 days. Further needed improve water-deficient conditions, particularly newly reclaimed soils.