Effect of Presprouting Plant Growth Regulators and Natural Materials on Dormancy, Growth, and Yield of Potatoes (Solanum tuberosum L.)

Table 5

The mean squares for three potato varieties on germination (stand count) at different weeks after planting.

Stand count
Sources of variance	df	Week 1	Week 2	Week 3	Week 4
Site	1	2853.59	2565.14	2328.40	2120.48
Season	1	143.25	44.59	55.25	35.81
Variety	2	871.00	358.54	122.61	52.11
Seasonvariety	2	19.06	14.46	6.21	5.25
Sitevariety	2	67.49	32.44	2.50	2.49
Site season rep variety	25	32.26	19.04	14.00	9.22
Treatment	6	293.57	254.04	193.88	153.20
Varietytreatment	12	3.13	2.56	1.05	1.28
Error	198	4.91	3.34	2.19	1.75
Total	251
CV		22.97	14.69	10.35	8.44
R ^2		0.89	0.89	0.91	0.91

, , , significant at (), (), (), respectively. CV: coefficient of variation; R²: coefficient of determination.