Seed Quality as Related to Harvest Time in Three Key Perennial Grasses Native to Puna Tussock Rangelands of Peru

Table 1

Seed purity (average ± 1 SE) of the three perennial grasses studied.

Species	Harvest date
	H1	H2	H3	Average
	%
Fedo	25 ± 2.1^Ba	18 ± 1.7^cb	26 ± 3.7^Ca	23 ± 1.5^C
Fehu	45 ± 3.0^Aa	29 ± 3.2^Bb	38 ± 3.9^Bab	37 ± 2.0^B
Cavi	41 ± 3.9^Aab	38 ± 3.6^Ab	53 ± 4.9^Aa	44 ± 2.5^A
Average	37 ± 2.0^a	28 ± 1.9^b	39 ± 2.7^a

Fedo, Festuca dolichophylla; Fehu, Festuca humilior; Cavi, Calamagrostis vicunarum harvested at three times after anthesis (H1, 21 days; H2, 28 days; H3, 35 days). Means with different superscripts in the same row (lowercase letters) or in the same column (uppercase letters) are significantly different ().