Abstract
The addition of organic residues to agricultural soils has been used as a practical alternative to improve crop quality and health. The objective of this work was to evaluate maize physiological and nutritional responses to the application of compost and biochar combined with urea (N) and N-(n-butyl) thiophosphoric triamide (NBPT). The experiment was performed in plastic pots with 3 kg of soil under greenhouse conditions for 30 days. The compost and biochar were applied at the rate of 0.3 ton ha-1, using an amount of nutrient (nitrogen, phosphorus and potassium) demanded by crop growth. The physiological responses of maize were monitored by measuring the plant height, stalk diameter, leaf chlorophyll content, shoot dry weight and root dry weight. The nutritional responses of maize were assessed by using the nutrient concentration and the total nutrient assimilation by the plants. The results showed that the addition of compost or biochar did not alter the maize physiological response compared to the addition of mineral fertilizer used under the same conditions. However, a difference occurred in the maize nutritional responses to the compost and biochar amendments combined with urea and NBPT. The greatest N concentration in maize was observed in the treatment consisting of biochar combined with urea + NBPT. All the treatments in which compost or biochar was applied in combination with urea and NBPT presented greater total N assimilation compared to the treatment with conventional fertilization. The results of this survey showed that the combination of urea and NBPT improved the nitrogen-use efficiency of maize.
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Claims 7
Claim · model-written summary
Compost did not alter maize physiological responses compared with mineral fertilizer.
- Treatment
- composte0
- Outcome
- maize physiological responsee0
- Direction
- did not altere0
- Comparator
- mineral fertilizere0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of compost or biochar did not alter the maize physiological response compared to the addition of mineral fertilizer used under the same conditions”
Claim · model-written summary
Biochar did not alter maize physiological responses compared with mineral fertilizer.
- Treatment
- biochare0
- Outcome
- maize physiological responsee0
- Direction
- did not altere0
- Comparator
- mineral fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of compost or biochar did not alter the maize physiological response compared to the addition of mineral fertilizer used under the same conditions”
Claim · model-written summary
Compost and biochar combined with urea and NBPT differed in maize nutritional responses.
- Treatment
- compost and biochar amendments combined with urea and NBPTe0
- Outcome
- maize nutritional responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a difference occurred in the maize nutritional responses to the compost and biochar amendments combined with urea and NBPT”
Claim · model-written summary
Biochar plus urea and NBPT yielded the greatest maize nitrogen concentration.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest N concentration in maize was observed in the treatment consisting of biochar combined with urea + NBPT”
Claim · model-written summary
Compost combined with urea and NBPT increased total maize nitrogen assimilation versus conventional fertilization.
- Treatment
- composte0
- Outcome
- total N assimilatione0
- Direction
- greatere0
- Comparator
- conventional fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the treatments in which compost or biochar was applied in combination with urea and NBPT presented greater total N assimilation compared to the treatment with conventional fertilization”
t0“maize”
Claim · model-written summary
Biochar combined with urea and NBPT increased total maize nitrogen assimilation versus conventional fertilization.
- Treatment
- biochare0
- Outcome
- total N assimilatione0
- Direction
- greatere0
- Comparator
- conventional fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the treatments in which compost or biochar was applied in combination with urea and NBPT presented greater total N assimilation compared to the treatment with conventional fertilization”
t0“maize”
Claim · model-written summary
The authors conclude that urea and NBPT together improved maize nitrogen-use efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination of urea and NBPT improved the nitrogen-use efficiency of maize”
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