EFFECT OF CROP CARE PRACTICES (HAND PICKING OF INFESTED BRANCHES) ASSOCIATED TO BIOLOGICAL CONTROL WITH THE FUNGUS <i>METARHIZJUM ANISOPLIAE</i> ON THE CONTROL OF THE CITRUS BORER, <i>DIPLOSCHEMA ROTUNDJCOLLE</i> (SERVILLE, 1834) (COL.: CERAMBYCIDAE)

Machado, L.A.; Berti Filho, E.; Leite, L.G.; Silva, E.M. da

doi:10.1590/1808-1657v65n2p0351998

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Artigo • Arq. Inst. Biol. 65 (2) • Jul-Dec 1998 • https://doi.org/10.1590/1808-1657v65n2p0351998 linkcopy

EFFECT OF CROP CARE PRACTICES (HAND PICKING OF INFESTED BRANCHES) ASSOCIATED TO BIOLOGICAL CONTROL WITH THE FUNGUS METARHIZJUM ANISOPLIAE ON THE CONTROL OF THE CITRUS BORER, DIPLOSCHEMA ROTUNDJCOLLE (SERVILLE, 1834) (COL.: CERAMBYCIDAE)

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The aim of this research was to establish a system of integrated control of the citrus borer, Diploschema rotundicolle, by picking up the branches attacked by this pest during its oviposition season (crop care practices) associated to the fungus Metarhizium anisopliae (biological control). The experiment was set with an 18-year-old citrus orchard (Citrus sinensis) and the trees were showing high infestation levei by D. rotundicolle. The efficiency of the crop control made by the grower was compared with that made by the research staff, as well as the association of both methods (cultural and biological control). The fungus was introduced in the borer galleries by using larvae of Galleria mellonella (Lepidoptera, Pyralidae) as vectors. The results have indicated that the integration of the fungus plus cultural control was effective on the control of D. rotundicolle.

KEY WORDS:
Biological control; crop control; Diploschema rotundicolle ; Metarhizium anisopliae ; Citrus sinensis

Plantas	Avaliação
Plantas	N^üde ramos tratados	Larvas vivas	Larvas mortas
			/
1	1	-	1
2	6	1	5
3	4	-	4
4	1	-	1
5	3	-	3
6	3	-	3
7	8	1	7
8	6	-	6
9	4	1	3
10	4	1	3
11	5	-	5
Total	45	4	41
Controle			91,11%

				Tratamentos'
	CM-P		CM-C		CM+FV		TEST
Posição na planta	N°de ramos coletados	% viab.	N° de ramos coletados	%viab.	Nºde ramos coletados	% viab.	Nº de ramos coletados
Baixo	164	82,74	150	75,33	219	78,09	166
Médio	204	78,92	107	81,31	241	80,08	171
Alto	68	72,06	6	66,67	39	69,23	43
Total	399	87,47	263	77,57	499	78,36	380

	Data da catação manual
Tratamentos1	11/5/89	12/7/89
CM+FV	72,75 a	52,00 a
CM-P	64,50 a	45,50 a
TEST.	49,75 ab	45,25 a
CM-C	35,00 b	32,00 a
CV	24,17%	32,57%

	Tratamentos1
Repetições	CM-P	CM-C	CM+FV	TEST.
OI	16	28	19	20
02	16	34	16	28
03	14	40	24	44
04	14	24	20	39
Total	60	126	79	131

Tratamentos1	N-médio de larvas	% de redução
TEST.	32,75 a	0,0
CM-C	31,50 a	3,82
CM-P	15,00 b	54,20
CM+FV	1,75 b	94,66
CV	32,20%

Tratamentos	% de eficiência
CM+FV	98,75 a
CM-P	87,33 b
TEST.	73,61 c
CM-C	66,22 d
CV	8,99%

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Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil
E-mail: arquivos@biologico.sp.gov.br

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Observações:

[2] CM+FV - Catação manual executada pela equipe de pesquisa do Instituto Biológico mais o uso do fungo M. anisopliae via inseto vetor; CM-P - Catação manual executada pela equipe de pesquisa do Instituto Biológico;

[3] CM-C - Catação manual executada pela equipe do citricultor; TEST - Testemunha.