Influence of irrigation frequency and nitrogen concentration on Tifway 419 bermudagrass in Brazil

Santos, Patrick Luan Ferreira dos; Nascimento, Matheus Vinícios Leal do; Godoy, Leandro José Grava de; Zabotto, Alessandro Reinaldo; Tavares, Armando Reis; Bôas, Roberto Lyra Villas

doi:10.1590/0034-737X202269050011

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Soils and Plant Nutrition • Rev. Ceres 69 (5) • Sep-Oct 2022 • https://doi.org/10.1590/0034-737X202269050011 linkcopy

Influence of irrigation frequency and nitrogen concentration on Tifway 419 bermudagrass in Brazil¹

Authorship SCIMAGO INSTITUTIONS RANKINGS

Tifway 419 Bermudagrass is widely used on athletic fields, requiring irrigation and fertilization for its maintenance; however, little information is available for Bermudagrass management in tropical countries, as Brazil. Thus, this study aimed to evaluate the effect of irrigation frequency and nitrogen (N) fertilization on the development of Tifway 419 Bermudagrass. The experiment was carried in 2019, applying two irrigation frequencies (daily and every two days) and five N concentrations of 0, 42.19, 63.28, 105.47 and 126.56 kg N ha^-1 divided into three 30-day increments. Photosynthetic pigments, grass height, accumulated dry mass, relative chlorophyll index, regeneration rate, root length, and dry mass of root, rhizome and stolon were analyzed. The best result was observed in between 63.28 and 105.47 kg N ha^-1 (15% N) and irrigated every two days. The treatment maintains the green color of the grass. Maximum Bermudagrass regeneration rate was observed within this interval, and the root length and dry mass of roots, rhizomes and stolons were higher compared to the highest concentration.

Keywords
Cynodon spp.; athletic fields; nitrogen fertilization; irrigation management

Layer	pH	O.M.	P_resin	H+Al	K	Ca	Mg	BS	CEC	V
cm	CaCl₂	g dm^-3	mg dm^-3	mmol_c dm^-3						%
0-10	5.1	19	80	19	3.2	16	5	24	43	56
10-20	5.1	10	32	17	3.1	13	3	19	35	53

Concentration	Chlorophyll a	Chlorophyll b	Carotenoids
(kg N ha^-1)	µg g^-1 FW
0.00	186.15	101.49	95.42
42.19	208.03	105.16	102.46
63.28	249.47	131.42	102.17
105.47	283.43	151.43	104.01
126.56	289.32	185.87	103.71
Irrigation frequency
F1 - Daily	243.40	136.00	102.48
F2 - Every 2 days	243.16	134.14	100.62
CVC	4.47	4.22	2.91
F_{concentration}	345.07**	229.06**	4.871**
F_frequency	0.013ns	0.812ns	1.695ns
F_{d x f}	3.585*	0.629ns	0.143ns
CV (%)	2.85	4.83	4.44

Concentration	RCI	Height	Dry mass
(kg N ha^-1)	RCI	mm	Kg ha^-1
0.00	196	18	267.43
42.19	228	20	329.57
63.28	277	22	359.24
105.47	306	24	435.78
126.56	307	26	544.77
Irrigation frequency
F1 - Daily	265	23 a	410.50 a
F2 - Every 2 days	260	21 b	364.21 b
CVC	6	1	18.54
F_{concentration}	210.80**	53.229**	110.78**
F_frequency	1.655ns	12.736**	26.01**
F_{d x f}	0.331ns	4.564**	2.398*
CV (%)	3.65	6.03	7.41

Concentration	Recovery rate	Root length	Dry mass(root + rhizome + stolon)
(kg N ha^-1)	%	cm	kg m^-3 soil
0.00	74.61	19.3	27.79
42.19	81.90	19.3	23.65
63.28	83.23	19.1	21.42
105.47	85.59	17.5	19.35
126.56	84.61	14.9	17.31
Irrigation frequency
F1 - Daily	82.10	17.6 b	21.28 b
F2 - Every 2 days	81.88	18.4 a	22.52 a
CVC	1.31	0.2	0.53
F_{concentration}	36.62**	279.801**	194.661**
F_frequency	0.113ns	44.67**	22.93**
F_{d x f}	1.631ns	3.080*	1.098ns
CV (%)	2.48	1.96	3.75

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[TFN01] ^**
- Significant at 1%,

[TFN02] ^*
- Significant at 5%,

[TFN03] ^ns
- Not significant.

Influence of irrigation frequency and nitrogen concentration on Tifway 419 bermudagrass in Brazil1

Influence of irrigation frequency and nitrogen concentration on Tifway 419 bermudagrass in Brazil¹