Effect of potassium rates and application methods in no-till on soil K availability and crop yield
ABSTRACT The combination of potassium (K) fertilization with the adoption of no-tillage (NT) increases the concentration gradient of K in the soil, requiring subsurface layers to diagnose fertility. This study aimed to evaluate the effect of K rates applied in band or broadcast on the soil K availab...
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Sociedade Brasileira de Ciência do Solo
2025-01-01
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| Series: | Revista Brasileira de Ciência do Solo |
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| _version_ | 1832592513786970112 |
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| author | Gustavo Pesini Dayana Jéssica Eckert Matheus Ferrari Menegat Gustavo Frosi João Pedro Moro Flores Lucas Aquino Alves Dionata Filippi Tadeu Luis Tiecher Danilo Rheinheimer dos Santos Tales Tiecher |
| author_facet | Gustavo Pesini Dayana Jéssica Eckert Matheus Ferrari Menegat Gustavo Frosi João Pedro Moro Flores Lucas Aquino Alves Dionata Filippi Tadeu Luis Tiecher Danilo Rheinheimer dos Santos Tales Tiecher |
| author_sort | Gustavo Pesini |
| collection | DOAJ |
| description | ABSTRACT The combination of potassium (K) fertilization with the adoption of no-tillage (NT) increases the concentration gradient of K in the soil, requiring subsurface layers to diagnose fertility. This study aimed to evaluate the effect of K rates applied in band or broadcast on the soil K availability and soybean and wheat yield. The study was established in 2019 on a Latossolo (Ferralsol) in the northwest of Rio Grande do Sul State, Brazil, under NT since 2002. Summer soybeans and winter wheat were cultivated from 2020 to 2022, and rates of K (0, 50, 100, 150, and 200 kg ha-1) were applied annually at soybean sowing. Each rate of K was applied in a band at the seeding row or broadcast on the soil surface. Grain yields and the available K content in the soil at different soil layers (0.00-0.05, 0.05-0.10, 0.10-0.15, and 0.15-0.20 m) were evaluated after the soybean harvest in 2020/2021. The K applied remained close to the application site, at the 0.10-0.15 m layer when applied in band and at the 0.00-0.05 m layer when deposited by broadcast. Band application of K can decrease the K gradient and increase soybean and wheat yield when the available K content is below 64 mg dm-3 in the 0.10-0.20 m soil layer, coinciding with the critical level adopted in the south of Brazil until 2016. The replacement of K removed by soybean and wheat grains under NT with low soil K availability at 0.10-0.20 m should be band applied in-furrow along the sowing line. |
| format | Article |
| id | doaj-art-8adf5786ba9643a4a8adc68755f96f71 |
| institution | Kabale University |
| issn | 1806-9657 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj-art-8adf5786ba9643a4a8adc68755f96f712025-01-21T07:40:08ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572025-01-014810.36783/18069657rbcs20240067Effect of potassium rates and application methods in no-till on soil K availability and crop yieldGustavo Pesinihttps://orcid.org/0000-0002-4357-5037Dayana Jéssica Eckerthttps://orcid.org/0000-0001-7920-9517Matheus Ferrari Menegathttps://orcid.org/0009-0002-6415-1126Gustavo Frosihttps://orcid.org/0000-0002-0324-636XJoão Pedro Moro Floreshttps://orcid.org/0000-0001-8363-4911Lucas Aquino Alveshttps://orcid.org/0000-0003-0392-6231Dionata Filippihttps://orcid.org/0000-0002-6180-7540Tadeu Luis Tiecherhttps://orcid.org/0000-0002-6903-9961Danilo Rheinheimer dos Santoshttps://orcid.org/0000-0003-1085-7617Tales Tiecherhttps://orcid.org/0000-0001-5612-2849ABSTRACT The combination of potassium (K) fertilization with the adoption of no-tillage (NT) increases the concentration gradient of K in the soil, requiring subsurface layers to diagnose fertility. This study aimed to evaluate the effect of K rates applied in band or broadcast on the soil K availability and soybean and wheat yield. The study was established in 2019 on a Latossolo (Ferralsol) in the northwest of Rio Grande do Sul State, Brazil, under NT since 2002. Summer soybeans and winter wheat were cultivated from 2020 to 2022, and rates of K (0, 50, 100, 150, and 200 kg ha-1) were applied annually at soybean sowing. Each rate of K was applied in a band at the seeding row or broadcast on the soil surface. Grain yields and the available K content in the soil at different soil layers (0.00-0.05, 0.05-0.10, 0.10-0.15, and 0.15-0.20 m) were evaluated after the soybean harvest in 2020/2021. The K applied remained close to the application site, at the 0.10-0.15 m layer when applied in band and at the 0.00-0.05 m layer when deposited by broadcast. Band application of K can decrease the K gradient and increase soybean and wheat yield when the available K content is below 64 mg dm-3 in the 0.10-0.20 m soil layer, coinciding with the critical level adopted in the south of Brazil until 2016. The replacement of K removed by soybean and wheat grains under NT with low soil K availability at 0.10-0.20 m should be band applied in-furrow along the sowing line.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832024000100916&lng=en&tlng=enband-appliedbroadcastK availablesoybean yieldwheat yield |
| spellingShingle | Gustavo Pesini Dayana Jéssica Eckert Matheus Ferrari Menegat Gustavo Frosi João Pedro Moro Flores Lucas Aquino Alves Dionata Filippi Tadeu Luis Tiecher Danilo Rheinheimer dos Santos Tales Tiecher Effect of potassium rates and application methods in no-till on soil K availability and crop yield Revista Brasileira de Ciência do Solo band-applied broadcast K available soybean yield wheat yield |
| title | Effect of potassium rates and application methods in no-till on soil K availability and crop yield |
| title_full | Effect of potassium rates and application methods in no-till on soil K availability and crop yield |
| title_fullStr | Effect of potassium rates and application methods in no-till on soil K availability and crop yield |
| title_full_unstemmed | Effect of potassium rates and application methods in no-till on soil K availability and crop yield |
| title_short | Effect of potassium rates and application methods in no-till on soil K availability and crop yield |
| title_sort | effect of potassium rates and application methods in no till on soil k availability and crop yield |
| topic | band-applied broadcast K available soybean yield wheat yield |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832024000100916&lng=en&tlng=en |
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