THE EXTENSION OF THE SAMPLING METHOD OF HAYDOCK AND SHAW TO ESTIMATE THE MORPHOLOGICAL COMPONENTS OF A CYNODON-NLEMFLUENSIS CV JAMAICAN SWARD

The subjective method of Haydock and Shaw (1975) was used to sample 0. 25 ha Jamaican star grass (Cynodon nlemfluensis cv. Jamaican) sward fo r five weeks to estimate fresh and dry matter availabilities as well a s morphological yield components. Samples obtained form the reference frames were manually separated to determine the weight of the green an d dead material and in each of these parts that of leaves and stems. C orrelations were estimated between these indicators and between refere nce frames. Adjustments were made (P < 0.01 and P < 0.001) for all ind icators, except the components of the dead material. The performance o f the reference frames and the estimates found allow to describe the m orphological and biological composition of the species.