Maize response to inoculation with strains of plant growth-promoting bactéria

Dartora, Janaína; Guimarães, Vandeir F.; Menezes, Cid R. J.; Freiberger, Mariângela B.; Castoldi, Gustavo; Gonçalves, Edilaine. D. V.

doi:10.1590/1807-1929/agriambi.v20n7p606-611

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SOIL, WATER AND PLANT MANAGEMENT • Rev. bras. eng. agríc. ambient. 20 (7) • July 2016 • https://doi.org/10.1590/1807-1929/agriambi.v20n7p606-611 copy

Maize response to inoculation with strains of plant growth-promoting bactéria

Resposta do milho à inoculação de estirpes de bactérias promotoras do crescimento de plantas

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The aim of this study was to evaluate the response of maize to inoculation with strains of plant growth-promoting bacteria (PGPB) in two cultivation years. The experiment was set in a randomized block design with four replicates in two cultivation years (2012/13 and 2013/14). The treatments consisted of PGPB inoculation: control (without N and without inoculation); 30 kg of N ha^-1 at sowing (N1); 160 kg of N ha^-1 (N1 + 130 kg of N ha^-1 as top-dressing); N1 + A. brasilense, Ab-V5; N1 + A. brasilense, HM053; N1 + Azospirillum sp. L26; N1 + Azospirillum sp. L27; N1 + Enhydrobacter sp. 4331; N1 + Rhizobium sp. 8121. Basal stem diameter, plant height, leaf area, shoot dry matter and yield were evaluated. The strain of Rhizobium sp. 8121and the isolate Azospirillum sp. L26 associated with 30 kg of N ha^-1 at sowing promoted yields equivalent to that of the N fertilization of 160 kg ha^-1, demonstrating the potential to be used in the inoculation of maize seeds.

Key words:
Zea mays L.; Azospirillum sp.; Rhizobium sp.; Phytohormones

SV	DF					Mean square
SV	DF	PH V8	PH R1	SD V8	SD R1	SDM V8	SDM R1	LA V8	LA R1	YIELD
	2012/13 season
Block	3	381	32	10^* *, ** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	29^ , *** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	683238	23351251	403	1320	1730203
Inoculation	8	365^* *, ** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	302^ , *** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	8.2^* *, ** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	10	924498	15432240	1450	2392	2280039
Error	24	149	63	2.8	4.6	823125	14098812	621	1045	1061798
CV (%)		8.05	3.17	6.89	8.08	18.9	35.1	17.3	14.7	14.9
	2013/14 season
Block	3	216	128	2.6	6.8	536225	981071	618	17	1579459^* *, ** Signific ant by F test at 0.05 and 0.01 probability level, respectively.
Inoculation	8	701^ , *** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	404^ , *** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	30^ , *** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	6.4	855140	7811177^* *, ** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	1871^* *, ** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	1645^* *, ** Signific ant by F test at 0.05 and 0.01 probability level, respectively.	2451614^ , *** Signific ant by F test at 0.05 and 0.01 probability level, respectively.
Error	24	142	119	6.0	5.7	687730	2404977	749	593	339537
CV (%)		7.74	4.24	8.50	11.2	22.1	15.9	19.5	16.9	17.9

Treatment	V8 stage				R1 stage				YIELD kg ha^-1
Treatment	PH cm	SD mm	SDM kg ha^-1	LA dm²	PH cm	SD mm	SDM kg ha^-1	LA dm²	YIELD kg ha^-1
Control	132 b	23 b	3,995	108	236 c	24	6,788	172	5,852
30 kg of N ha^-1	144 ab	25 ab	4,863	134	241 bc	26	9,906	199	6,102
160 kg of N ha^-1	157 ab	24 ab	4,804	155	260 a	29	13,291	241	7,199
A. brasilense (Ab-V5) + 30 kg of N ha^-1	157 ab	26 ab	5,087	159	256 ab	27	12,403	234	6,538
A. brasilense (HM053) + 30 kg of N ha^-1	165 a	27 a	5,687	174	260 a	28	11,020	232	7,871
Azospirillum sp. (L26) + 30 kg of N ha^-1	157 ab	25 ab	4,930	147	258 ab	28	10,219	251	7,718
Azospirillum sp. (L27) + 30 kg of N ha^-1	147 ab	23 b	4,262	130	248 abc	26	9,291	205	6,509
Enhydrobacter sp. (4331) + 30 kg of N ha^-1	154 ab	25 ab	4,661	142	254 abc	25	10,812	220	7,673
Rhizobium sp. (8121) + 30 kg of N ha^-1	154 ab	24 ab	4,850	148	255 ab	27	12,428	218	6,403
Mean	152	24.5	4,793	144	252	27	10,684	219	6,874

Treatment	V8 stage				R1 stage				YIELD kg ha^-1
Treatment	PH cm	SD mm	SDM kg ha^-1	LA dm²	PH cm	SD mm	SDM kg ha^-1	LA dm²	YIELD kg ha^-1
Control	122 b	24 b	2,792	92 b	233 b	19	7,541 b	105 b	2,555 cd
30 kg of N ha^-1	147 ab	28 ab	3,225	122 ab	257 ab	21	8,741 ab	132 ab	2,840 cd
160 kg of N ha^-1	160 a	30 a	3,908	152 ab	268 a	22	11,105 ab	161 ab	4,536 a
A. brasilense (Ab-V5) + 30 kg of N ha^-1	163 a	32 a	4,235	151 ab	256 ab	21	9,643 ab	135 ab	3,229 bcd
A. brasilense (HM053) + 30 kg of N ha^-1	159 a	27 ab	3,859	146 ab	260 ab	19	8,242 b	128 ab	2,364 d
Azospirillum sp. (L26) + 30 kg of N ha^-1	164 a	32 a	3,980	144 ab	265 a	23	11,975 a	170 a	3,779 abc
Azospirillum sp. (L27) + 30 kg of N ha^-1	160 a	29 ab	3,757	145 ab	261 a	22	10,000 ab	151 ab	2,556 cd
Enhydrobacter sp. (4331) + 30 kg of N ha^-1	158 a	26 ab	3,721	145 ab	262 a	22	9,803 ab	153 ab	3,118 bcd
Rhizobium sp. (8121) + 30 kg of N ha^-1	156 a	32 a	4,187	167 a	261 a	22	10,517 ab	158 ab	4,267 ab
Mean	154	29	3,740	140	258	21	9,730	144	3,249

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[1] janaina_dartora@yahoo.com.br (Corresponding author)