Weed Interference in the Establishment of <i>Urochloa ruziziensis</i>

LOURENÇO, A.A.; MOTA, R.V.; SANCHES, J.L.; MARQUES, R.F.; MARCHI, S.R.

doi:10.1590/S0100-83582019370100077

Acessibilidade / Reportar erro

Brasil
SciELO.org - Rede SciELO
Blog SciELO em Perspectiva

Abrir menu

Brasil

Español English

Planta Daninha

Sobre o periódico
Corpo Editorial
Instruções aos autores
Contato

sumário « anterior atual seguinte »

Resumo (Inglês)
Resumo (Português)

Texto (Inglês)

Download PDF (Inglês)

Compartilhe

Compartilhe
E-mail
Facebook
Twitter
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley

Sumário

Compartilhe
E-mail
Facebook
Twitter
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley

Resumo (Inglês)
Resumo (Português)

Texto (Inglês)

Download PDF (Inglês)

Article • Planta daninha 37 • 2019 • https://doi.org/10.1590/S0100-83582019370100077 copy

Weed Interference in the Establishment of Urochloa ruziziensis

Interferência de Plantas Daninhas no Estabelecimento de Urochloa ruziziensis

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT:

This research aimed to study weed interference relationship on morphogenesis, yield, and greenhouse gas production potential of Urochloa ruziziensis under pasture renovation conditions. The experimental design was a randomized block design with four replications. Treatments consisted of seven coexistence periods: 0, 15, 30, 45, 60, 75, and 90 days after emergence (DAE). The following morphological parameters were analyzed: number of tillers, number of leaves, photosynthetically active leaf blade biomass, fresh stem biomass, dead material biomass, and total dry biomass. In vitro analyses of methane (CH4) and carbon dioxide (CO2) production were also carried out. The results were submitted to analysis of variance by the F-test, and the test of means was carried out by the Scott-Knott test at 5%. Biomass, CH4, and CO2 production of U. ruziziensis were modified with only 15 days of weed coexistence, with an effect even higher from 45 DAE. Therefore, weeds interfere with all morphological parameters, yield, and greenhouse gas production in the pasture establishment with the forage grass U. ruziziensis.

Keywords:
pasture renovation; weed competition; morphogenesis; carbon dioxide; methane

Authorship

A.A. LOURENÇO ^** Corresponding author: <arllan_bg@hotmail.com>

Universidade Federal de Goiás, Jataí-GO, Brasil.Universidade Federal de GoiásBrazilJataí, GO, Brazil Universidade Federal de Goiás, Jataí-GO, Brasil.

R.V. MOTA

Universidade Federal de Goiás, Jataí-GO, Brasil.Universidade Federal de GoiásBrazilJataí, GO, Brazil Universidade Federal de Goiás, Jataí-GO, Brasil.

J.L. SANCHES

Universidade Federal de Mato Grosso, Barra do Garças-MT, Brasil.Universidade Federal de Mato GrossoBrazilBarra do Garças, MT, Brazil Universidade Federal de Mato Grosso, Barra do Garças-MT, Brasil.

R.F. MARQUES

Universidade Federal de Goiás, Jataí-GO, Brasil.Universidade Federal de GoiásBrazilJataí, GO, Brazil Universidade Federal de Goiás, Jataí-GO, Brasil.

S.R. MARCHI

https://orcid.org/0000-0002-2673-5094

* Corresponding author: <arllan_bg@hotmail.com>

SCIMAGO INSTITUTIONS RANKINGS

Universidade Federal de Goiás, Jataí-GO, Brasil.Universidade Federal de GoiásBrazilJataí, GO, Brazil Universidade Federal de Goiás, Jataí-GO, Brasil.

Figures | Tables | Formulas

Figures (7)
Tables (5)
Formulas (1)

Thumbnail

Figure 1
Minimum and maximum temperature (oC) and precipitation (mm) during the period from November 2015 to February 2016 in Barra do Garças, MT, 2015/2016.

Thumbnail

Figure 2
Relative Importance (%) of weed community in the respective coexistence periods (days). Barra do Garças, MT, 2015/2016.

Thumbnail

Figure 3
Dry matter (g m-2) of weed community in the respective coexistence periods (days). Barra do Garças, MT, 2015/2016.

Thumbnail

Figure 4
Relationship between first fresh leaf height and tiller height of U. ruziziensis obtained as a function of coexistence periods. Barra do Garças, MT, 2016.

Thumbnail

Figure 5
Relationship between leaf and stem dry matter (leaf/stem) of U. ruziziensis obtained as a function of coexistence periods. Barra do Garças, MT, 2016.

Thumbnail

Figure 6
Period before interference (PBI) for biomass production obtained as a function of increasing coexistence periods (days). Barra do Garças, MT, 2016.

Thumbnail

Figure 7
Period before interference (PBI) for methane production obtained as a function of increasing coexistence periods (days). Barra do Garças, MT, 2016.

Thumbnail

Table 1
Scientific, common names and international weed codes present in the experimental area. Barra do Garças/MT, 2016

Thumbnail

Table 2
Height and diameter of tillers, first leaf height, and number of fresh leaves obtained at 90 DAE as a function of coexistence periods with weed community. Mean of 20 tillers. Barra do Garças, MT, 2016

Thumbnail

Table 3
Canopy height, number of tillers, fresh leaf dry biomass (FLDB), and fresh stem dry biomass (FSDB) obtained at 90 DAE as a function of weed coexistence periods. Barra do Garças, MT, 2016

Thumbnail

Table 4
Dead material dry biomass (DMDB), total dry biomass (TDB), fresh leaf volumetric density (FLVD) obtained at 90 DAE as a function of weed coexistence periods. Barra do Garças, MT, 2016

Thumbnail

Table 5
Production potential of the greenhouse gases methane (CH4) and carbon dioxide (CO2) obtained at 90 DAE as a function of weed coexistence periods. Barra do Garças, MT, 2016

Thumbnail

Figure 1 Minimum and maximum temperature (oC) and precipitation (mm) during the period from November 2015 to February 2016 in Barra do Garças, MT, 2015/2016.

Figure 2 Relative Importance (%) of weed community in the respective coexistence periods (days). Barra do Garças, MT, 2015/2016.

SIDSN - Sida santaremnensis. CASOB - Senna obtusifolia. BOILF - Spermacoce latifolia. URELO - Urena lobata. WALAM - Waltheria americana. HYPSU - Hyptis suaveolens. MINDE - Mimosa debilis. DIQTE - Diodella teres. CVNG - Croton glandulosus.

Figure 3 Dry matter (g m-2) of weed community in the respective coexistence periods (days). Barra do Garças, MT, 2015/2016.

Figure 4 Relationship between first fresh leaf height and tiller height of U. ruziziensis obtained as a function of coexistence periods. Barra do Garças, MT, 2016.

** Significant at 1% probability.

Figure 5 Relationship between leaf and stem dry matter (leaf/stem) of U. ruziziensis obtained as a function of coexistence periods. Barra do Garças, MT, 2016.

** Significant at 1% probability.

Figure 6 Period before interference (PBI) for biomass production obtained as a function of increasing coexistence periods (days). Barra do Garças, MT, 2016.

Figure 7 Period before interference (PBI) for methane production obtained as a function of increasing coexistence periods (days). Barra do Garças, MT, 2016.

Table 1 Scientific, common names and international weed codes present in the experimental area. Barra do Garças/MT, 2016

Scientific name	Common name	International code	Family
	Eudicotyledonous
Croton glandulosus L.	Vente conmigo	CVNGL	Euphorbiaceae
Senna obtusifolia (L.) H.S. Irvin & Barneby	Sicklepod	CASOB	Fabaceae
Glycine wightii (Wight & Arn.) Verdc.	Wight’s neonotonia	GLIWI	Fabaceae
Mimosa debilis L.	Mimosa	MINDE	Mimosoideae
Hyptis suaveolens (L.)	Pignut	HYPSU	Lamiaceae
Diodella teres (Walter) Small	Poorjoe	DIQTE	Rubiaceae
Spermacoce latifolia Aubl.	Oval-leaf false buttonweed	BOILF	Rubiaceae
Sida santaremnensis Monteiro	Sida	SIDSN	Malvaceae
Waltheria americana L.	Uhaloa	WALAM
Urena lobata L.	Caesarweed	URELO

Table 2 Height and diameter of tillers, first leaf height, and number of fresh leaves obtained at 90 DAE as a function of coexistence periods with weed community. Mean of 20 tillers. Barra do Garças, MT, 2016

Coexistence period (DAE)	Tiller height (cm)	First leaf height (cm)	Tiller diameter (mm)	Number of fresh leaves
0	70.00 a	34.00 b	3.30 a	6.68 a
15	67.00 a	37.00 a	2.29 b	6.70 a
30	48.00 b	28.00 b	2.08 b	5.64 b
45	44.00 b	27.00 b	1.72 c	5.23 b
60	39.00 b	26.00 b	1.90 c	4.76 b
75	65.00 a	45.00 a	1.75 c	5.13 b
90	72.00 a	46.00 a	1.79 c	5.83 b
F Treatment	8.03**	6.60**	16.36**	2.73*
F Block	3.32*	3.94*	0.71^ns	0.53^ns
CV (%)	16.61	18.76	13.08	15.98
P	0.0003	0.0008	<0.0001	0.0459

** Significant at 1%; * significant at 5%; ns not significant. Means followed by the same letter in the column do not differ from each other by the Scott-Knott test at 5% probability.

Table 3 Canopy height, number of tillers, fresh leaf dry biomass (FLDB), and fresh stem dry biomass (FSDB) obtained at 90 DAE as a function of weed coexistence periods. Barra do Garças, MT, 2016

Coexistence period (DAE)	Canopy height (m)	Number of tillers	FLDB (t ha^-1)	FSDB (t ha^-1)
0	0.72 a	4.00 a	4.55 a	5.95 a
15	0.67 a	4.50 a	4.14 a	6.40 a
30	0.69 a	5.50 a	3.27 a	5.22 a
45	0.58 b	4.50 a	2.50 b	4.02 b
60	0.60 b	4.25 a	2.27 b	3.84 b
75	0.60 b	3.00 b	2.39 b	4.18 b
90	0.77 a	2.75 b	1.68 b	3.81 b
F Treatment	4.13**	4.13**	7.40**	2.70*
F Block	1.81^ns	1.94^ns	0.24^ns	0.04^ns
CV (%)	10.53	22.79	26.07	27.41
P	0.0088	0.0088	0.0004	0.0478

** Significant at 1%; * significant at 5%; ns not significant. Means followed by the same letter in the column do not differ from each other by the Scott-Knott test at 5% probability.

Table 4 Dead material dry biomass (DMDB), total dry biomass (TDB), fresh leaf volumetric density (FLVD) obtained at 90 DAE as a function of weed coexistence periods. Barra do Garças, MT, 2016

Coexistence period (DAE)	DMDB (t ha^-1)	TDB (t ha^-1)	FLVD (g m^-3)
0	1.77	12.27 a	329.11 a
15	1.30	11.83 a	275.94 a
30	1.96	10.46 a	224.31 a
45	1.39	7.91 b	145.75 b
60	1.62	7.73 b	138.65 b
75	1.53	8.10 b	143.98 b
90	1.40	6.90 b	128.62 b
F Treatment	0.59^ns	3.01*	7.59**
F Block	0.42^ns	0.10^ns	0.56^ns
CV (%)	39.02	26.83	29.14
P	0.7352	0.0324	0.0004

** Significant at 1%; * significant at 5%; ns not significant. Means followed by the same letter in the column do not differ from each other by the Scott-Knott test at 5% probability.

Table 5 Production potential of the greenhouse gases methane (CH4) and carbon dioxide (CO2) obtained at 90 DAE as a function of weed coexistence periods. Barra do Garças, MT, 2016

Coexistence period (DAE)	Total gas (mL g^-1 incubated DM)	CH₄ (mL g^-1 incubated DM)	CO₂ (mL g^-1 incubated DM)
0	75.92 c	8.69 b	64.47 c
15	89.48 b	9.52 b	77.01 b
30	92.43 b	10.23 b	73.62 b
45	88.73 b	10.08 b	75.10 b
60	101.12 a	10.93 a	85.14 a
75	99.42 a	11.27 a	82.53 a
90	101.66 a	11.81 a	88.67 a
F Treatment	10.45**	7.69**	21.57**
F Block	1.77^ns	0.93^ns	2.76^ns
CV (%)	6.12	7.44	4.49
P	< 0.0001	0.0003	<0.0001

** Significant at 1%; * significant at 5%; ns not significant. Means followed by the same letter in the column do not differ from each other by the Scott-Knott test at 5% probability.

V x = V j \times P p s i \times 0.068

How to cite

copy

Sociedade Brasileira da Ciência das Plantas Daninhas Departamento de Fitotecnia - DFT, Universidade Federal de Viçosa - UFV, 36570-000 - Viçosa-MG - Brasil, Tel./Fax::(+55 31) 3899-2611 - Viçosa - MG - Brazil
E-mail: rpdaninha@gmail.com

Acompanhe os números deste periódico no seu leitor de RSS

Versão para download de PDF

PDF

Inglês

Versões e tradução automática

Versão original do texto

English

Tradução automática

Google Translator
Microsoft Translator

Como citar

RIS

BIBTEX

Outros formatos de citação e exportação:

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
E-mail: scielo@scielo.org

Leia a Declaração de Acesso Aberto

Métricas

Weed Interference in the Establishment of <i>Urochloa ruziziensis</i>

PlumX

Mensagem

[1] * Corresponding author: <arllan_bg@hotmail.com>