Foliar fertilization in Bermuda grass Discovery<sup>TM</sup>

Silvério, Jefferson Oliveira; Santos, Patrick Luan Ferreira dos; Nascimento, Matheus Vinícios Leal do; Souza, Camila Aparecida Nunes de; Costa, João Victor; Villas Bôas, Roberto Lyra

doi:10.1590/2447-536X.v26i3.2219

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Scientific Article • Ornam. Hortic. 26 (3) • Jul-Sep 2020 • https://doi.org/10.1590/2447-536X.v26i3.2219 copy

Foliar fertilization in Bermuda grass Discovery^TM

Adubação foliar em grama Bermuda Discovery^TM

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Bermuda grass Discovery^TM is a new variety of ornamental and sports turfgrass with a unique color (bluish green), which has great potential to grow in Brazil. However, information regarding its development is still incipient, mainly related to the management of foliar fertilization. Thus, the aimed was to evaluate the development of Bermuda grass Discovery^TM based on doses of foliar fertilizer. The experiment was carried out in the experimental area, in 2019 autumn; and the experimental design was completely randomized, with 4 treatments and 3 repetitions, totaling 12 experimental plots of 1.5 m² each. The treatments were: 0 mL L^-1 (Control), 50 mL L^-1, 75 mL L^-1 and 100 mL L^-1 of the foliar fertilizer: NPK (6-2-3 + 20% amino acids). The applications were carried out with costal spray, in the late afternoon (17h), to avoid losses by evapotranspiration, and the evaluations were daily over 15 days. The following were evaluated: chemical analysis of the soil, green color index, height of the lawn, dry mass of the clippings and analysis by digital image. It was observed that with the doses increasing, there was better development and coloring of the lawn, showing that foliar fertilization is an effective and quick response method for the turfgrass, with the need for regular applications in an interval of 7 days to maintain the quality desired aesthetics. However, this variety presents low vertical growth, consequently less need for maintenance of cut compared to the other Bermuda grass. The dose of 75 mL L^-1 is recommended for the management of the species.

Keywords:
Cynodon dactylon; nutritional management; turfgrass

pH	O.M.	P_resin	H+Al	K	Ca	Mg	BS	CEC	V%
CaCl₂	g dm^-3	mg dm^-3	_ _ _ _ _ _ _ _ _ _ _ _ _ mg dm^-3 _ _ _ _ _ _ _ _ _ _ _ _ _
5.6	20	108	14	2.9	26	8	37	50	73

Treatment	Days after installing the experiment
	1		2		3		4		5		6		7
	--------------------------- Scout CM1000 -----------------------
0 mL L^-1	191	a	193	b	195	c	184	c	182	c	185	c	186	c
50 mL L^-1	199	a	206	ab	235	b	279	b	305	b	302	b	304	b
75 mL L^-1	199	a	229	a	292	a	305	a	331	a	330	a	325	a
100 mL L^-1	201	a	222	a	292	a	303	a	322	ab	322	a	325	a
CVC	14		27		19		20		25		18		15
CV(%)	2.77		4.89		2.94		2.94		3.43		2.42		2.14
F	2.09^ns		7.34*		121.19**		156.55**		152.28**		287.08**		359.35**
Treatment	Days after installing the experiment
	8		9		10		11		12		13		14
	----------------------------- Scout CM1000 --------------------------
0 mL L^-1	180	c	186	c	185	b	188	c	189	c	182	b	186	b
50 mL L^-1	301	b	291	b	276	a	216	b	204	b	201	ab	202	ab
75 mL L^-1	323	a	312	a	289	a	242	a	218	a	216	a	211	a
100 mL L^-1	323	a	298	ab	279	a	240	a	213	ab	219	a	207	a
CVC	13		14		20		22		10		29		19
CV(%)	1.83		1.94		3.03		3.81		1.81		5.51		3.58
F	528.24**		364.7**		116.7**		27.16**		36.31**		6.77*		6.99*

Treatment	Days after installing the experiment
	1		2		3		4		5		6		7
	------------------------------- Scout TCM 500 -----------------------------------
0 mL L^-1	6.6	a	6.7	b	6.7	b	6.7	c	6.7	b	6.6	c	6.4	c
50 mL L^-1	6.7	a	6.9	b	7.0	b	7.3	b	7.4	a	7.5	b	7.4	b
75 mL L^-1	6.9	a	7.5	a	7.6	a	8.0	a	8.0	a	8.1	a	8.3	a
100 mL L^-1	6.9	a	7.5	a	7.6	a	7.9	a	7.9	a	8.1	a	8.2	a
CVC	0.9		0.5		0.6		0.5		0.7		0.6		0.6
CV(%)	4.85		2.55		3.11		2.75		3.59		2.97		3.24
F	0.58^ns		15.83**		11.47*		25.23**		15.77**		30.36**		38.93**
Treatment	Days after installing the experiment
	8		9		10		11		12		13		14
	------------------------------- Scout TCM 500 -----------------------------------
0 mL L^-1	6.5	c	6.3	c	6.3	c	6.2	c	6.2	c	6.4	b	6.2	b
50 mL L^-1	7.4	b	7.3	b	7.2	b	7.1	b	7.1	b	7.1	a	6.9	a
75 mL L^-1	8.2	a	8.0	a	7.9	a	7.9	a	7.5	a	7.3	a	7.2	a
100 mL L^-1	8.2	a	8.0	a	8.0	a	7.7	a	7.5	a	7.4	a	7.1	a
CVC	0.6		0.5		0.4		0.5		0.3		0.6		0.3
CV(%)	3.01		2.50		2.09		2.59		1.82		3.20		1.88
F	39.72**		59.15**		79.29**		47.68**		65.92**		11.56**		35.07**

Treatment	7 days after installing the experiment
	Green (G)		Hue (H)		Saturation (S)		Brightness (B)		Dark Green (DGCI)
	---		degrees ( º )		%		%		---
0 mL L^-1	98	b	72	b	40	ab	40	b	0.47	b
50 mL L^-1	124	a	86	a	51	a	44	a	0.49	b
75 mL L^-1	131	a	92	a	39	b	42	ab	0.58	a
100 mL L^-1	131	a	93	a	40	ab	42	ab	0.57	a
CVC	10		7		11		3		0.05
CV(%)	2.96		3.15		9.63		2.64		3.27
F	58.38**		36.27**		5.39*		6.98*		30.88**
Treatment	14 days after installing the experiment
	Green (G)		Hue (H)		Saturation (S)		Brightness (B)		Dark Green (DGCI)
	---		degrees ( º )		%		%		---
0 mL L^-1	88	c	47	b	17	b	36	b	0.42	a
50 mL L^-1	109	b	58	ab	25	ab	37	ab	0.45	a
75 mL L^-1	118	a	64	a	32	a	38	a	0.46	a
100 mL L^-1	119	a	68	a	33	a	38	a	0.47	a
CVC	5		15		10		2		0.09
CV(%)	1.91		9.70		15.09		1.68		7.36
F	140.17**		7.61**		9.61*		8.08**		1.63^ns

Treatment	days after installing the experiment
	1		2		3		4		5		6		7
	------------------------------------- mm ------------------------------------
0 mL L^-1	15.1	a	15.1	a	15.4	a	15.2	b	15.3	c	15.5	b	15.6	c
50 mL L^-1	15.4	a	15.5	a	15.1	a	15.4	b	15.7	b	15.9	b	16.2	b
75 mL L^-1	15.2	a	15.2	a	15.2	a	15.9	a	16.1	a	16.4	a	16.7	a
100 mL L^-1	14.8	a	15.2	a	15.2	a	15.8	a	16.1	a	16.5	a	16.7	a
CVC	0.9		1.0		0.6		0.3		0.3		0.4		0.5
CV(%)	2.20		2.42		1.49		0.79		0.68		1.05		1.20
F	1.75^ns		0.53^ns		0.83^ns		22.37**		36.62**		23.65**		21.59**
Treatment	days after installing the experiment
	8		9		10		11		12		13		14
	----------------------------------- mm ---------------------------------------
0 mL L^-1	15.7	c	16.0	c	16.3	c	16.7	c	17.1	c	17.3	c	17.8	c
50 mL L^-1	16.5	b	16.7	b	16.9	b	17.4	b	18.3	b	18.5	b	19.2	b
75 mL L^-1	17.2	a	17.5	a	18.3	a	18.6	a	19.0	ab	19.7	a	20.3	a
100 mL L^-1	17.2	a	17.5	a	18.3	a	18.6	a	19.3	a	19.6	a	20.1	a
CVC	0.5		0.6		0.5		0.5		0.9		0.6		0.6
CV(%)	1.20		1.31		1.12		1.12		1.82		1.21		1.2
F	40.41**		33.01**		76.17**		67.50**		26.55**		71.07**		70.50**

Treatment	15 days after installing the experiment
Treatment	----------------- g m^-2 ---------------
0 mL L^-1	2.03 c
50 mL L^-1	3.52 b
75 mL L^-1	4.60 a
100 mL L^-1	4.70 a
CVC	0.70
CV(%)	7.4
F	63.27**

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[1] * Corresponding author: patricklfsantos@gmail.com

Brasil

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Foliar fertilization in Bermuda grass DiscoveryTM

Adubação foliar em grama Bermuda DiscoveryTM

Abstract

Foliar fertilization in Bermuda grass Discovery^TM

Adubação foliar em grama Bermuda Discovery^TM