Comparative productivity of two tropical grasses as influenced by fertilizer nitrogen and pasture legumes

Ng , T.T. and Wong, T.H. (1976) Comparative productivity of two tropical grasses as influenced by fertilizer nitrogen and pasture legumes. Tropical Grasslands, 10 (3). pp. 179-185.

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Abstract

In 2 trials in 1973-5, Ischaemum magnum and Brachiaria decumbens either grown in pure stands and given (a) 224 kg N/ha annually or grown in mixture with (b) Macroptilium atropurpureum, (c) M. atropurpureum + Stylosanthes guyanensis cv. Schofield, (d) Centrosema pubescens + S. guyanensis, (e) Calopogonium mucunoides + Pueraria phaseoloides or (f) C. mucunoides + S. guyanensis was cut every 8 weeks. Mean annual DM yields of I. magnum ranged from 4.14 t/ha when grown with (c) to 13.74 t with (a), and total pasture yields (grass + legume + weeds) ranged from 9.88 t with (b) to 14.07 t with (a). Respective values for B. decumbens ranged from 5.79 t with (f) to 13.82 t with (a) and from 9.45 t with (b) to 14.04 t with (a). CP yields of I. magnum pasture ranged from 0.72 t/ha with (b) to 1.37 t with (d), and B. decumbens pasture from 0.58 t with (b) to 1.04 t with (f) and 1.035 t with (d). S. guyanensis was the most vigorous and persistent legume; the proportion of other legumes in the pastures decreased with time and most had disappeared by the end of the 2nd year. Pasture DM yields decreased with time, the rate generally being faster in grass given N than in grass-legume mixtures. It was concluded that I. magnum was comparable with B. decumbens in productivity and other agronomic attributes

Item Type:	Article
Author Affiliation:	Department of Agriculture, Semongok, Sarawak.
Subjects:	Plant Production Plant Protection
Divisions:	Other Crops
Depositing User:	Mr B Krishnamurthy
Date Deposited:	15 May 2012 14:44
Last Modified:	15 May 2012 14:44
URI:	http://eprints.icrisat.ac.in/id/eprint/5297

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