Data/hora: 31/05/2024 02:15:40

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 06/10/2008
Data da última atualização: | 06/10/2008
Autoria: | HUERTA, E.; MONTEJO-MENESES, E.; VIDAL, O.; JARQUIN, A.
Título: | How earthworms may enhance Zea mays and Capsicum sp production?
Ano de publicação: | 2008
Fonte/Imprenta: | In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
Idioma: | Inglês

Conteúdo:

Searching alternatives for increasing soil fertility, at the State of Tabasco, Mexico, it was developed
a project with the use of earthworms. Maize (Zea mays) and ?Amashito? pepper (Capsicum sp)
are important crops at Tabasco, so there were installed 3 experiments with these plants. In one
experiment there was planted maize culture, at the same time there were inoculated earthworms
(30 gm2, Lavellodrilus bonampakensis and Balanteodrilus pearsei) with mulches of Mucuna
pruriens var. utilis, with cow manure, only earthworms, only cow manure and only M. pruriens
var. utilis mulches and control, with four replicas each treatment. At the end of the experiment,
plants with the highest biomass were found in plots with cow manure and cow manure with
earthworms (2.1±6m y 1.9±8 m respectively), corns with the highest fresh weight were found in
plots with earthworms and cow manure (272±29 g, 243±36 g respectively). The second
experiment was installed in order to promote earthworm?s presence by the use of fresh organic
matter; TSBF method (Anderson and Ingram 1993) was performed in order to observe initial
earthworm biomass and density. Six treatments were developed during 10 months with four
replicas: Mulches of M. pruriens var utilis, M. pruriens var. utilis with maize fallow, maize fallow,
and maize fallow with cow manure, cow manure, and control. The plants with the highest height
were found in plots with M. pruriens var. utilis and plots with maize fallow (264±37 g and 261±36
g respectively), the corns with the highest biomass (163±53g) were found in plots with M. pruriens
var. utilis and maize fallow, also these plots had the highest earthworm biomass (65±51 gm2)
and earthworm density (100±52 ind.m2), 3.5-fold higher than control and 4-fold higher than initial
data. The third experiment tested the growth and fruit production of amashito pepper (Capsicum
sp) with earthworms (Pontoscolex corethrurus) and Biofertilizers (Azospirillum brasiliensis) twelve
treatments were established. The highest height was observed in plants germinated in
vermicompost with earthworms as growth stimulators (23.4?2.1 cm), the highest fruit production
per plant (43?55fruits per plant) was obtained in plants germinated in vermicompost, even though
the lowest organic matter content in soils was observed in treatments where plants germinated
in vermicompost and were stimulated with the presence of earthworms and Biofertilizers. Further
studies are required in order to explain how earthworms can stimulate maize and amashito
pepper production.
Anderson JM., Ingram JSI. (1993) Tropical soil biology and fertility: A handbook of methods, 2
ed.CAB International, Wallingford

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