Doses and Timing of 2, 4-D Application for Broadleaf Weed Control, Botanical Compositions, Productivity, and Nutritive Value of Natural Pasture

Table 13

Effect of doses, time, and their interaction of 2, 4-D application on the nutritional quality of natural pasture.

Factors (2, 4-D herbicide doses and time of application)	DM	Ash	CP	NDF	ADF	ADL	IVDMD
Doses
0 L·ha^−1 (control)	89.27	14.12	6.93	67.70	44.40	6.91	46.56
1 L·ha^−1	89.34	14.10	7.32	67.77	43.93	6.82	46.00
1.5 L·ha^−1	89.50	13.67	7.35	69.14	44.14	6.75	46.05
2 L·ha^−1	89.58	13.29	6.69	69.74	44.51	6.87	45.34
-value	0.70	0.25	0.69	0.43	0.95	0.93	0.96
Time
Control	89.27	14.12	6.93	67.70	44.40	6.91	46.56
Mid-July	89.32	14.21	7.66	67.81	44.90	7.06	46.86
Early August	89.58	13.13	6.51	70.14	44.57	6.84	44.84
Mid-August	89.51	13.77	7.24	68.56	42.94	6.50	45.73
-value	0.64	0.08	0.32	0.30	0.30	0.07	0.69
R  T	ns	ns	ns	ns	ns	Ns	ns
Mean	89.46	13.74	7.12	68.66	44.09	6.81	46.01
CV	0.52	6.52	16.95	3.97	4.96	5.41	8.29
-value	0.462	0.302	0.346	0.462	0.498	0.075	0.945

DMY = Dry matter, CP = crude protein, NDF = neutral detergent fiber, ADF = acid detergent fiber, ADL = acid detergent fiber, IVDMD = In vitro dry matter digestibility, CV = coefficient variation, ns = nonsignificant (), R  T = interaction of doses and time of 2, 4-D application.