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Effect of palmarosa (Cymbopogon martinii) on improvement of salt affected soils
Symposium no. 33 Paper no. 327 Presentation: poster
327-1
Effect of palmarosa (Cymbopogon martinii) on
improvement of salt affected soils
SINGH R.P., SINGH R.S., SINGH R.K. and SINGH Ajeet
Department of Soil Science Agric. Chemistry, Udai Pratap (Autonomous) College,
Varanasi, (U.P.), India
Abstract
In India about 10 million hectare land have been affected by salinity and alkalinity
problems. Reclamation of these problem soils is a costly affair for farmers of India
specially for poor farmers of eastern U.P. Our preliminary findings have clearly
indicated that aromatic plants like rosa grass and java grass may be successfully grown
in salt affected soils. Keeping these facts in mind a systematic study was planned to find
out the influence of rosa grass (Palmarosa) on improvement of the salt affected soils of
eastern U.P. (India). Accordingly, a field experiment was conducted to study the effect
of rosa grass with and without amendments on physicochemical properties of a saline
sodic soil (pH 8.8, ECe 7.9 dS m-1 and SAR 35).
The experiment was conducted in a randomized block design with four replications.
Rooted seedlings of palmarosa (var. Motia) were transplanted with a spacing of 45 cm
between rows and 30 cm between plants. Nominal doses of fertilizers were applied at 40
kg N, 20 kg P2O5 and 20 kg K2O ha-1. Four harvests were taken and biomass samples
were distilled in Clevenger’s apparatus for estimation of essential oil.
Palmarosa without any amendment given normal yield on the salt affected soil and
improved physicochemical characteristics of the soil. The crop with pyrites or pyrites
plus other amendments like sludge and hyacinth compost had better effect than the crop
alone on the improvement of saline sodic soil under study. The pH, ECe, ESP and SAR
of the soil decreased whereas hydraulic conductivity increased. Content of organic
carbon, available N, P, K, Cu, Zn and Fe increased. Maximum improvement was
recorded with palmarosa crop on plots treated with 3
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