Table 2.

Comparison and regression analysis of fresh weight yield and LiDAR Volumetric Estimate in 12 cultivars of perennial ryegrass

CV	Slope	Y-intercept	X-intercept	R2	Slope deviates from zero (P)
1	251,687 ± 18,797	− 24,786,555 ± 2,701,665	98.48	0.9945	0.0475*
2	367,976 ± 9248	− 36,712,222 ± 1,329,168	99.77	0.9994	0.016*
3	268,352 ± 31,270	− 27,599,719 ± 4,494,494	102.8	0.9866	0.0739
4	296,257 ± 50,781	− 29,848,658 ± 7,298,879	100.8	0.9715	0.1081
5	375,228 ± 14,687	− 39,844,763 ± 2,111,043	106.2	0.9985	0.0249*
6	254,370 ± 8264	− 25,279,526 ± 1,187,740	99.38	0.9989	0.0207*
7	213,756 ± 2424	− 21,271,669 ± 348,411	99.51	0.9999	0.0072**
8	287,494 ± 957.5	− 28,144,506 ± 137,617	97.9	1	0.0021**
9	288,594 ± 2449	− 26,977,390 ± 351,961	93.48	0.9999	0.0054**
10	318,106 ± 5578	− 33,444,196 ± 801,692	105.1	0.9997	0.0112*
11	333,438 ± 16,568	− 34,701,094 ± 2,381,281	104.1	0.9975	0.0316*
12	212,148 ± 7899	− 19,647,030 ± 1,135,327	92.61	0.9986	0.0237*

Values for slope and Y-intercept represent mean ± SD

* Significant; ** highly significant