Abstract
ABSTRACT Maize intercropped with perennial green manure is an option to promote soil coverage, control weeds and recycle soil nutrients, in an organic system. This study aimed at evaluating the agronomic characteristics and yield of grains and organic maize straw intercropped with perennial green manures sown at different maize growth stages. A 3 x 2 + 1 factorial design was used, with three perennial species of green manure - calopogonium (Calopogonium mucunoides Desv.), tropical kudzu [Pueraria phaseoloides (Roxb.) Benth] and perennial soy [Neonotonia wightii (Wight & Arn) Lackey] - and two green manure sowing times - at the maize V4 (four expanded leaves) and VT (bolting) stages - plus a control treatment (maize monoculture). A randomized blocks design, with four replications, was used. Soil coverage, production of green manures dry matter and weeds, and maize growth and production variables were evaluated. The sowing of green manures at the V4 stage had a higher percentage of soil coverage, in relation to the VT stage. Calopogonium, when compared to the other green manure species, had the highest percentage of soil coverage (35.63 %) and dry matter (1.0 Mg ha-1). Perennial green manures grown intercropped with maize did not affect growth, grain yield and maize straw. However, they were not effective in suppressing weeds.
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Claims 5
Claim · model-written summary
Green manures sown at maize V4 provided higher soil coverage than those sown at VT.
- Treatment
- sowing of green manures at the V4 stagee0
- Outcome
- percentage of soil coveragee0
- Direction
- highere0
- Comparator
- VT stagee0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sowing of green manures at the V4 stage had a higher percentage of soil coverage, in relation to the VT stage”
t0“maize”
Claim · model-written summary
Calopogonium had the highest soil coverage, 35.63 %, among green manure species.
- Treatment
- Calopogoniume0
- Outcome
- percentage of soil coveragee0
- Direction
- higheste0
- Value
- 35.63 %e0
- Comparator
- other green manure speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Calopogonium, when compared to the other green manure species, had the highest percentage of soil coverage (35.63 %)”
t0“maize”
Claim · model-written summary
Calopogonium had the highest dry matter, 1.0 Mg ha-1, among green manure species.
- Treatment
- Calopogoniume0
- Outcome
- dry mattere0
- Direction
- higheste0
- Value
- 1.0 Mg ha-1e0
- Comparator
- other green manure speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Calopogonium, when compared to the other green manure species, had the highest percentage of soil coverage (35.63 %) and dry matter (1.0 Mg ha-1)”
t0“maize”
Claim · model-written summary
Intercropped perennial green manures did not affect maize growth, grain yield or straw.
- Treatment
- Perennial green manures grown intercropped with maizee0
- Outcome
- growth, grain yield and maize strawe0
- Direction
- did not affecte0
- Comparator
- maize monoculturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Perennial green manures grown intercropped with maize did not affect growth, grain yield and maize straw”
e1“plus a control treatment (maize monoculture)”
Claim · model-written summary
Intercropped perennial green manures were ineffective in suppressing weeds.
- Treatment
- Perennial green manures grown intercropped with maizee0
- Interactor
- weedse0weed
- Outcome
- suppressing weedse0
- Direction
- not effectivee0
- Comparator
- maize monoculturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Perennial green manures grown intercropped with maize did not affect growth, grain yield and maize straw. However, they were not effective in suppressing weeds”
e1“plus a control treatment (maize monoculture)”
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