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Nitrogen Fertilization of Guinea and Napier Grass (Panicum maximum and Pennisetum purpureum) in Malaysian Oligotrophic Peat

Published online by Cambridge University Press:  03 October 2008

W. Y. Chew
Affiliation:
Malaysian Agricultural Research and Development Institute (MARDI), Jalan Kebun, Kelang, Selangor, Malaysia
K. Ramli
Affiliation:
Malaysian Agricultural Research and Development Institute (MARDI), Jalan Kebun, Kelang, Selangor, Malaysia
A. B. A. Majid
Affiliation:
Malaysian Agricultural Research and Development Institute (MARDI), Jalan Kebun, Kelang, Selangor, Malaysia

Summary

Two field experiments studied the nitrogen fertilizer requirements of guinea and napier grass on peat. Plants in the control plots, though optimally limed and fertilized with other nutrients, absorbed only 1.7 and 2.4% of total peat N in a year and N fertilization improved DM yield, with an optimum at 900 kg/ha/yr. Further positive response was not observed, probably because of a reduced ratio of N to other nutrients. Optimum N uptake, and N concentration in the DM, were achieved at 600 kg/ha/yr N but N recovery decreased linearly with increasing fertilizer N at the rate of about 2–4% per 100 kg/ha/yr N.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1982

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References

REFERENCES

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