Corrective and maintenance phosphorus fertilization on sugarcane yield in Oxisols

Abstract The objective of this work was to evaluate sugarcane (Saccharum spp.) yield in response to corrective and maintenance phosphorus fertilization in Oxisols. Two experiments were carried out in randomized complete blocks with four replicates. In the corrective fertilization treatments, 150 kg ha-1 P2O5 were broadcast and incorporated before planting. In the maintenance fertilization treatments, 40 kg ha-1 P2O5 per year were applied over the trash blanket. All treatments, except the control, were fertilized with 170 kg ha-1 P2O5 in the planting furrow. The first experiment was carried out in a sugarcane expansion area and the second, in a replanting area, in Oxisols with a low and high phosphorus availability, respectively. In the first experiment, corrective fertilization increased cane yield in 13.4 Mg ha-1 for plant cane and in 14.6 Mg ha-1 for the average of four ratoon crops, whereas maintenance fertilization increased yield in 17.7 and 8.1 Mg ha-1 for the average of four ratoon crops for the treatments without and with corrective fertilization, respectively. In the second experiment, there were no significant differences between treatments regarding yield. Corrective and maintenance phosphorus fertilization should be considered for sugarcane in areas where soil phosphorus availability is limiting.

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Organomineral phosphate fertilizer from sugarcane byproduct and its effects on soil phosphorus availability and sugarcane yield

Geoderma ◽

10.1016/j.geoderma.2018.12.036 ◽

2019 ◽

Vol 339 ◽

pp. 20-30 ◽

Cited By ~ 13

Author(s):

Bernardo Melo Montes Nogueira Borges ◽

Dalton Belchior Abdala ◽

Micael Felipe de Souza ◽

Larissa Marques Viglio ◽

Marta Jordana Arruda Coelho ◽

...

Keyword(s):

Soil Phosphorus ◽

Phosphate Fertilizer ◽

Phosphorus Availability ◽

Sugarcane Yield

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Potential of Acid Phosphatase Activity and Mycorrhizal Colonization to Reduce Phosphorus Fertilization in Maize Cultivated in Brazil

10.21203/rs.3.rs-391481/v1 ◽

2021 ◽

Author(s):

Lucas Lopes e Silva ◽

Joao Antonio da Costa Andrade ◽

Kátia Luciene Maltoni ◽

Luciola S. Lannes

Keyword(s):

Acid Phosphatase ◽

Phosphatase Activity ◽

Soil Phosphorus ◽

Grain Filling ◽

Phosphorus Availability ◽

Organic Production ◽

Mycorrhizal Colonization ◽

Phosphorus Fertilization ◽

Maize Production ◽

Low Phosphorus

Abstract Purpose: It is urgent to mitigate the environmental impacts resulting from agriculture, especially in highly biodiverse and threatened areas, as the Brazilian Cerrado. We aim to investigate whether phosphatase activity and mycorrhizal colonization are alternative plant strategies for nutrient acquisition in maize cultivated under fertilized and unfertilized conditions in Brazil, potentially contributing to reduce the use of phosphate fertilizers needed for production.Methods: Three experiments were performed: the first was conducted in a glasshouse, with 17 experimental pure maize lineages and two phosphorus treatments; the second in the field, with 3 pure maize lineages and two treatments, one without fertilization and another with NPK fertilization; and the third was also carried out in the field, with 13 simple commercial hybrids, grown either under NK or under NPK treatment. Soil and plant variables were measured and tested for the response to fertilization, differences amongst genotypes and response to phosphatase activity and mycorrhizal colonization.Results: We detected a positive effect of mycorrhizal colonization upon growth in pure maize lineages. The activity of acid phosphatase was modulated by the availability of phosphorus and nitrogen in the soil, and promoted grain filling of commercial hybrids in soils with low phosphorus availability. Conclusions: These results demonstrate, for the first time, that it is possible to select genotypes that are more adapted to low soil phosphorus availability aiming at organic production, or to use genotypes that have high phosphatase activity under phosphorus fertilization to reduce the amount of added phosphorus needed for maize production in Brazil.

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