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

Table 6

Botanical composition (%)/density percentage per·m²/of legumes and grasses in natural pasture under different doses and time of 2, 4-D herbicide application.

Treatments (2, 4-D herbicide doses and application time)	Grasses			Legumes
	1^st year	2^nd year	Mean	1^st year	2^nd year	Mean
Control (no treatment)	68.53	55.37^bcd	61.95^bcd	20.48^bc	22.31^abc	21.39^ab
1 L·ha^−1 at early (mid-July)	68.89	49.33^cd	59.11^cd	17.91^bc	25.33^ab	21.62^ab
1 L·ha^−1 at mid (early-August)	74.49	44.94^d	59.72^cd	13.33^c	27.53^a	20.43^abc
1 L·ha^−1 at late (mid-August)	54.48	52.83^cd	53.66^d	31.06^a	23.59^ab	27.32^a
1.5 L·ha^−1 at early (mid-July)	72.75	85.76^abc	79.26^abc	19.65^bc	7.12^bcd	13.39^bcd
1.5 L·ha^−1 at mid (early-August)	69.22	61.54^abcd	65.38^abcd	17.49^bc	19.23^abcd	18.36^cd
1.5 L·ha^−1 at late (mid-August)	64.27	62.88^abcd	63.57^abcd	23.18^ab	18.56^abcd	20.87^abc
2 L·ha^−1 at early (mid-July)	79.62	91.28^ab	85.45^a	11.48^c	4.36^cd	7.92^d
2 L·ha^−1 at mid (early-August)	68.71	97.07^a	82.89^ab	17.34^bc	1.46^d	9.40^cd
2 L·ha^−1 at late (mid-August)	69.24	26.10^d	51.98^d	18.09^bc	36.96^a	25.64^a
Mean	69.02	63.97	66.54	19.00	18.01	18.51
CV	13.39	29.39	25.91	29.74	32.20	28.47
value	0.2062	0.0067	0.0092	0.0296	0.0067	0.0056

1^st year = 2019, 2^nd year = 2020, CV = coefficient variation. Means with different letters are significantly different.