Table 6

Table 6. Effect of defoliation treatments on partitioning of the vegetative and reproductive fractions of Hordeum bulbosum: first year.

Component	Control^†	Clipping frequency (no. times clipped)^‡				Clipping height (cm)				Interaction
		1	2	3	Significance	5	2.5	1	Significance	Fraction x height
Total shoot biomass (g DM)^§	120***	103^a	93^b	84^c	***	99^a	92^b	92^b	*	NS
Vegetative biomass (g DM)	64NS	56^a	55^a	50^ab	NS	54	54	53	NS	NS
Spikes (g DM)	7***	4	2	2	NS	3	2	2	NS	NS
Corms (g DM)	49***	43^a	36^b	32^b	***	42^a	35^b	32^b	***	NS
Reproductive fraction (%)^\|	47***	45^a	41^b	41^c	**	46^a	41^b	40^b	**	NS
No. tillers/plant (4 April)	11.5***	8.3^a	12.9^b	17.5^c	***	16.8^b	11.3^a	10.3^a	**	NS

* P < 0.05; ** P < 0.01; *** P < 0.001; NS, nonsignificant.
^†Difference between the control and the mean of all the defoliation treatments.
^‡In the first year, one-third of the treatments were clipped at the first defoliation, two-thirds at the second, and all at the third. Values followed by different letters are significantly different.
^§Values given represent grams of dry matter per container with a soil surface area of 1.25 m².
^|Reproductive fraction is spikes + corms.