Effect of nitrogen phosphorus and potassium fertilizers on yield and nutrient uptake in lemongrass cymbopogon flexuosus
Rao, E.V.S.P.; Singh, M.; Rao, R.S.G.
International Journal of Tropical Agriculture 3(2): 123-127
A field experiment was conducted during 1979-82 at the Central Institute of Medicinal and Aromatic Plants, Regional Centre, Bangalore [India] in a sandy loam soil to investigate the yield and nutrient uptake in lemongrass (Cymbopogon flexuosus Stapf.) cv. OD-19 as influenced by the application of nitrogen, phosphorus and potassium. The study indicated that application of N fertilizers (100 kg N/ha/year) increased the herbage and essential oil yields of lemongrass. Application of phosphorus and potassium did not increase the overall yields of the herbage and essential oil. Lemongrass removed about 134 kg N, 28 kg P and 166 kg K in six harvests. N application (100 kg N/ha/year) increased the uptake of N, P and K by lemongrass. The apparent recoveries of N by lemongrass varied between 29% and 38%.