Table 11-2

Table 11-2. Crude protein (CP) concentrations in tall fescue compared with other cool-season grasses when managed as pasture and altered by management practices.

Location†	Forage‡	Fescue cultivar	Management			CP	Reference
Location†	Forage‡	Fescue cultivar	Season	General	Fert.	CP	Reference
					kg/ha	g/kg
A. Tall fescue vs. other cool-season grasses
KY	TF	KY-31		Clipped		213	Lassiter et al., 1956
	OG			every		226
	SB			2 wk		256
	BG					192
WA	TF	Alta	21 Apr.			141	Austenson, 1963
			9 May			99
			31 May			89
			21 June			69
			10 July			51
	OG		21 Apr.			163
			9 May			98
			31 May			76
			21 June			58
			10 July			47
	RG		21 Apr.			142
			9 May			102
			31 May			95
			21 June			73
			10 July			67
IA	TF	KY-31	June			77	Bryan et al., 1970
			July			99
			Oct.			186
			Nov.			148
	RC		June			114
			July			90
			Oct.			226
			Nov.			158
WV	TF	Kenhy	Spring			169	Barker et al., 1988
			Fall			75
	OG		Spring			194
			Fall			88
	TF	Alta		Mixed		91
	BG			with		91
	OG			alfalfa		107
WV	TF	Kenhy	Spring			152	Prigge et al., 1999
			Fall			124
	OG		Spring			166
			Fall			129
B. Among tall fescue cultivars
KY	TF	KY-31	Summer			219	Buckner et al., 1967
			Fall			225
	TF	Kenwell	Summer			231
			Fall			220
GA	TF	KY-31		Without		221	Belesky et al., 1982
		Kenhy		irrigation		197
		Fawn				224
	TF	KY-31		With		181
		Kenhy		irrigation		181
		Fawn				204
PA	TF	KY-31				201	Vecellio et al., 1995
		Festorina				204
		Johnstone				201
		Roa				208
C. Nitrogen fertilization
WV	TF	KY-31	May	Veg.	0 N	170	Reid et al., 1967
					56 N	232
					504 N	306
				Boot	0 N	129
					56 N	142
					504 N	197
			June	Headed	0 N	89
					56 N	119
					504 N	162
			Aug.	Regrowth	0 N	99
					56 N	122
					504 N	190
TN	TF	KY-31	Spring		0 N	136	Fribourg and Loveland, 1978a
					50 N	171	Fribourg and Loveland, 1978a
					100 N	176
					150 N	176
					200 N	203
					250 N	210
			Summer		0 N	133
					50 N	134
					100 N
					150 N	170
					200 N	178
					250 N	176
			Fall		0 N
					50 N	125
					100 N	196
					150 N	176
					200 N	202
					250 N	213
IA	TF	KY-31			0 N	81	Mitchell et al., 1985
					112 N	95
D. Defoliation intensity
MO	TF	KY-31	Spring	2 cut		98	Ocumpaugh and Matches, 1977
			Summer	3 cut		120	Ocumpaugh and Matches, 1977
				5 cut		164
NC	TF	KY-31	Spring	8-5§		197	Chamblee and Isley, 2002
				10-5		198	Chamblee and Isley, 2002
				15-5		189
				11-9		220
				15-9		203
			Fall	8-5		241
				10-5		241
				15-5		196
				11-9		229
				15-9		220
NC	TF	KY-31	Spring	10-5		183	Burns and Chamblee, 2002
				15-5		179	Burns and Chamblee, 2002
				11-9		185
			Summer	10-5		152
				15-5		137
				11-9		181

† State where data were collected.

‡ TF = tall fescue; OG = orchardgrass; BG = Kentucky bluegrass; RC = reed canarygrass; RG = perennial ryegrass.

§ 8-5 is read as each time the canopy attained 8 cm it was defoliated to a 5-cm stubble.

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Tall Fescue Monograph

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Table 11-2

A. Tall fescue vs. other cool-season grasses

B. Among tall fescue cultivars

C. Nitrogen fertilization

D. Defoliation intensity

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