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

Table 11

Effect of doses, time, and their interaction of application of 2, 4-D herbicide on dry matter yield (t·ha⁻¹) of natural pasture forage portions.

Factors (2, 4-D herbicide doses and time of application)	1^st year	2^nd year	Mean
Doses
0 L·ha^−1 (control)	4.97	3.97	4.47
1 L·ha^−1	4.13	5.17	4.65
1.5 L·ha^−1	4.38	4.65	4.52
2 L·ha^−1	4.10	5.94	5.02
-value	0.14	0.13	0.63
Time
Control	4.97	3.97	4.47
Mid-July	4.30	5.00	4.65
Early August	4.22	5.95	5.09
Mid-August	4.10	4.82	4.46
-value	0.18	0.15	0.46
R  T	ns	ns	ns
Mean	4.28	5.16	4.71
CV	14.88	28.19	27.23

1^st year = 2019, 2^nd year = 2020, CV = coefficient variation, ns = nonsignificant, R  T = dose and time interaction, R  T = dose and time interaction.