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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 ,
K. Ramli  and
A. B. A. Majid
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
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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
Information
Experimental Agriculture , Volume 18 , Issue 1 , January 1982 , pp. 73 - 78
Copyright
Copyright © Cambridge University Press 1982

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References

REFERENCES

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Chew, W. Y., Williams, C. N. & Ramli, K. (1980). Studies on the availability to plants of soil nitrogen in Malaysian tropical oligotrophic peat. III. Tropical Agriculture, Trinidad 57:11–19.Google Scholar
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