Abstract
The use of organic wastes, as an alternative to inorganic fertilizer, can be an important strategy for Brazilian and tropical agriculture. Despite the importance, few field studies have been done for evaluating organic amendments on soybean crops in Brazil. The study aimed to evaluate the residual effects of the organic amendments poultry litter, farmyard manure and biochar combined with mineral fertilizer on some agronomic attributes of a soybean crop. A field experiment was carried out in a split-split-plot scheme, with three replicates in a randomized block experimental design. The organic sources (plots) at rates of 0, 3, 6 and 9 Mg·ha-1 (subplots) combined with 0, 100, 200, 300 and 400 kg·ha-1 (sub subplots) of a mineral fertilizer were applied in 2008. In 2009, only the mineral fertilizer was used on the soybean crop. As a result, all evaluated attributes were influenced by the treatments, except for the number of grains per pod. The application of poultry litter provided the highest yield (3715 kg·ha-1 using 9 Mg·ha-1 of the source). A synergistic effect between organic amendments and mineral fertilizer was observed. It was found the possibility of decrease doses of mineral fertilizers by prior use of organic amendments. The most effective dose combination application is 5.5 Mg·ha-1 of organic amendments associated with 200 kg·ha-1 of mineral fertilizer to provide optimum yield. The use of organic amendments, rich in nutrients, is a technology to sustainably increase the soybean grain yield.
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Claims 7
Claim · model-written summary
All evaluated soybean agronomic attributes were influenced by the organic amendment and mineral fertilizer treatments.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- Organic Amendmentst1
- Outcome
- all evaluated attributese0
- Direction
- influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
t1“Organic Amendments”
e0“all evaluated attributes were influenced by the treatments, except for the number of grains per pod”
Claim · model-written summary
The number of grains per pod was not influenced by the treatments.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Organic Amendmentst1
- Outcome
- number of grains per pode0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
t1“Organic Amendments”
e0“except for the number of grains per pod”
Claim · model-written summary
Poultry litter gave the highest soybean yield, 3715 kg/ha at 9 Mg/ha.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- poultry littere0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 3715 kg·ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“The application of poultry litter provided the highest yield (3715 kg·ha-1 using 9 Mg·ha-1 of the source)”
Claim · model-written summary
A synergistic effect between organic amendments and mineral fertilizer was observed.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- organic amendments and mineral fertilizere0
- Outcome
- synergistic effecte0
- Direction
- synergistice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“A synergistic effect between organic amendments and mineral fertilizer was observed”
Claim · model-written summary
Prior use of organic amendments makes it possible to decrease mineral fertilizer doses.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- decrease doses of mineral fertilizerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“the possibility of decrease doses of mineral fertilizers by prior use of organic amendments”
Claim · model-written summary
The most effective combination is 5.5 Mg/ha of organic amendments with 200 kg/ha of mineral fertilizer for optimum yield.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- 5.5 Mg·ha-1 of organic amendments associated with 200 kg·ha-1 of mineral fertilizere0
- Outcome
- optimum yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“The most effective dose combination application is 5.5 Mg·ha-1 of organic amendments associated with 200 kg·ha-1 of mineral fertilizer to provide optimum yield”
Claim · model-written summary
Using nutrient-rich organic amendments is a technology to sustainably increase soybean grain yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- organic amendmentse0
- Outcome
- soybean grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of organic amendments, rich in nutrients, is a technology to sustainably increase the soybean grain yield”
The same questions in other papers
organic · yield · Glycine max (soybean)Results differ
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