Abstract
ABSTRACT New nitrogen fertilizers are available in the market actually, however, does not have results on the efficiency of the Cerrado conditions. With that objective of this study was to evaluate the effect of urea including stabilized and controlled release urea on yield of irrigated common beans (Phaseolus vulgaris L) in no-tillage system. The experiment was conducted in the winter crop, at Embrapa Arroz e Feijão, in Santo Antônio de Goiás, State of Goiás, Brazil. The experimental design was randomized blocks, with five replicates. Treatments consisted of five N sources (urea, urea + NBPT, urea + polymer, ammonium sulphate, and ammonium nitrate) and a control (without N) being applied 20 kg ha-1 of N at sowing and 80 kg ha-1 onf N in topdressing. We evaluated the chlorophyll content in leaves of common beans, the leaf N content and dry mass weight (MSPA) in the flowering of common beans, the number of pods per plant, number of grains per pod, mass of 100 grains, grain yield and final stand of the common beans. The sources of nitrogen fertilizer did not influence, leaf N content, the mass of MSPA and the relative chlorophyll index of common beans. The use of polymerized urea and urea with urease inhibitor, did not produce increases in the number of grains per pod, number of pods per plant, mass of 100 grains and common beans yield compared to traditional sources of N, urea, ammonium sulfate and ammonium nitrate.
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Claims 3
Claim · model-written summary
The nitrogen fertilizer sources did not influence leaf N content, shoot dry mass or the relative chlorophyll index of common beans.
- Taxon
- common beans
Phaseolus vulgarise0 - Treatment
- sources of nitrogen fertilizere0
- Outcome
- leaf N contente0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sources of nitrogen fertilizer did not influence, leaf N content, the mass of MSPA and the relative chlorophyll index of common beans”
Claim · model-written summary
Polymerized urea and urea with urease inhibitor did not increase common bean yield compared with traditional N sources.
- Taxon
- common beansPhaseolus vulgarise0
- Treatment
- polymerized urea and urea with urease inhibitore0
- Outcome
- common beans yielde0
- Direction
- did not produce increasese0
- Comparator
- traditional sources of Ne0
- Setting
- Santo Antônio de Goiás, State of Goiás, Brazile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of polymerized urea and urea with urease inhibitor, did not produce increases in the number of grains per pod, number of pods per plant, mass of 100 grains and common beans yield compared to traditional sources of N”
e1“Santo Antônio de Goiás, State of Goiás, Brazil”
Claim · model-written summary
Polymerized urea and urea with urease inhibitor did not increase grains per pod, pods per plant or 100-grain mass compared with traditional N sources.
- Taxon
- common beansPhaseolus vulgarise0
- Treatment
- polymerized urea and urea with urease inhibitore0
- Outcome
- number of grains per pode0
- Direction
- did not produce increasese0
- Comparator
- traditional sources of Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of polymerized urea and urea with urease inhibitor, did not produce increases in the number of grains per pod, number of pods per plant, mass of 100 grains and common beans yield compared to traditional sources of N”
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