Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils

Abstract Urochloa grasses are used as cover crops in tropical cropping systems under no-till to improve nutrient cycling. We hypothesized that potassium (K) applied to ruzigrass (Urochloa ruziziensis) grown before cotton in a sandy soil could be timely cycled and ensure nutrition, yield and quality...

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Autores principales:	Fábio Rafael Echer, Vinicius José Souza Peres, Ciro Antonio Rosolem
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1d79da2240ea42eabb091ae377df2024
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spelling	oai:doaj.org-article:1d79da2240ea42eabb091ae377df20242021-12-02T15:09:48ZPotassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils10.1038/s41598-020-77354-x2045-2322https://doaj.org/article/1d79da2240ea42eabb091ae377df20242020-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77354-xhttps://doaj.org/toc/2045-2322Abstract Urochloa grasses are used as cover crops in tropical cropping systems under no-till to improve nutrient cycling. We hypothesized that potassium (K) applied to ruzigrass (Urochloa ruziziensis) grown before cotton in a sandy soil could be timely cycled and ensure nutrition, yield and quality of cotton cultivars with no need to split K application. Field experiments were performed with different K managements, applied to ruzigrass, to cotton grown after grass and without grass, or split as it is done conventionally. No yield differences were observed on K fertilized treatments. At 0 K, cotton yields were low, but they increased by 16% when ruzigrass was grown before, and short fiber content was lower when there was more K available. Ruzigrass grown before cotton increased micronaire as much as the application of 116 kg ha−1 of K without the grass. Fiber maturity was higher when K was applied to the grass or split in the grass and sidedressed in cotton. Growing ruzigrass before cotton allows for early K fertilization, i.e., application of all the fertilizer to de grass, since the nutrient is recycled, and cotton K nutrition is not harmed. Eventually K rates could be reduced as a result of higher efficiency of the systems.Fábio Rafael EcherVinicius José Souza PeresCiro Antonio RosolemNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fábio Rafael Echer Vinicius José Souza Peres Ciro Antonio Rosolem Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils
description	Abstract Urochloa grasses are used as cover crops in tropical cropping systems under no-till to improve nutrient cycling. We hypothesized that potassium (K) applied to ruzigrass (Urochloa ruziziensis) grown before cotton in a sandy soil could be timely cycled and ensure nutrition, yield and quality of cotton cultivars with no need to split K application. Field experiments were performed with different K managements, applied to ruzigrass, to cotton grown after grass and without grass, or split as it is done conventionally. No yield differences were observed on K fertilized treatments. At 0 K, cotton yields were low, but they increased by 16% when ruzigrass was grown before, and short fiber content was lower when there was more K available. Ruzigrass grown before cotton increased micronaire as much as the application of 116 kg ha−1 of K without the grass. Fiber maturity was higher when K was applied to the grass or split in the grass and sidedressed in cotton. Growing ruzigrass before cotton allows for early K fertilization, i.e., application of all the fertilizer to de grass, since the nutrient is recycled, and cotton K nutrition is not harmed. Eventually K rates could be reduced as a result of higher efficiency of the systems.
format	article
author	Fábio Rafael Echer Vinicius José Souza Peres Ciro Antonio Rosolem
author_facet	Fábio Rafael Echer Vinicius José Souza Peres Ciro Antonio Rosolem
author_sort	Fábio Rafael Echer
title	Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils
title_short	Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils
title_full	Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils
title_fullStr	Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils
title_full_unstemmed	Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils
title_sort	potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/1d79da2240ea42eabb091ae377df2024
work_keys_str_mv	AT fabiorafaelecher potassiumapplicationtothecovercroppriortocottonplantingasafertilizationstrategyinsandysoils AT viniciusjosesouzaperes potassiumapplicationtothecovercroppriortocottonplantingasafertilizationstrategyinsandysoils AT ciroantoniorosolem potassiumapplicationtothecovercroppriortocottonplantingasafertilizationstrategyinsandysoils
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Potassium application to the cover crop prior to cotton planting as a fertilization strategy in sandy soils

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