Plantas de cobertura e qualidade química de Latossolo Amarelo sob plantio direto no cerrado maranhense

Bressan, Sara B.; Nóbrega, Júlio César Azevedo; Nóbrega, Rafaela S. A.; Barbosa, Ronny Sobreira; Sousa, Lusiene Barbosa

doi:10.1590/s1415-43662013000400003

Cited by 17 publications

(13 citation statements)

References 19 publications

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“…A adição de resíduos de plantas de cobertura pode aumentar o pH do solo devido à neutralização dos íons H + e/ou a complexação do Al trocável por subprodutos da decomposição desses resíduos vegetais (MIYAZAWA et al 1993, AMARAL et al 2004, NASCIMENTO et al 2003. Outra possibilidade são as reações de troca de ligantes entre ânions orgânicos e os grupos OH-superficiais dos óxidos de Fe e Al (FRANCHINI et al 2001, BRESSAN et al 2013.…”

Section: Resultsunclassified

Cobertura do solo em vinhedos modifica os atributos do solo e o estado nutricional das videiras

Lehmann

Cassol

Sacomori

et al. 2016

Rev. Ciênc. Agrovet.

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RESUMOO cultivo de cobertura verde em vinhedos protege o solo da erosão e ainda pode ser uma alternativa para o controle do vigor da videira. Assim, o objetivo desse estudo foi avaliar a influência do cultivo de plantas de cobertura do solo de vinhedo nos atributos químicos do solo, na composição foliar e no crescimento de ramos da videira do cultivar Cabernet Sauvignon. As avalições foram realizadas na safra 2013/14, em experimento conduzido a partir de 2009 na região do Planalto Sul Catarinense, onde as condições edafoclimáticas favorecem o excesso de vigor da videira. Os tratamentos compreenderam três tipos de plantas, dois manejos e um controle. As plantas foram a sucessão de anuais, trigo mourisco (Fagopyrum esculentum) e azevém (Lolium multiflorum), a perene festuca (Festuca arundinacea) e as nativas (espontâneas) e os manejos foram roçada com o resíduo cultural distribuído em área total e, com a sua transferência da faixa da linha da videira para a faixa da entrelinha. O controle foi a aplicação de herbicida na faixa da linha e roçada na entrelinha. As amostragens das folhas e do solo foram realizadas nas fases de mudança de cor e de maturação plena da uva. As plantas de cobertura e seu manejo, em geral, não afetaram o pH, nem os teores de Al, Ca e Mg trocáveis no solo, porém as anuais aumentaram o P extraível na camada 0 -5 cm relativamente à testemunha. Em geral, a espécie perene aumentou o K extraível relativamente à testemunha nas camadas 5-10 e 10-15 cm e relativamente às plantas anuais e nativas em todas as camadas. A festuca promoveu menor teor de Mg nas folhas da videira em relação às plantas anuais e menores teores de P e K relativamente aos demais tratamentos e também diminuiu o teor de N foliar e a massa de ramos da videira em relação à testemunha. PALAVRAS-CHAVE:Cabernet Sauvignon, adubo verde, atributos do solo, composição foliar. ABSTRACTThe cover crop intercropping in vineyards protects the soil from erosion and can be an alternative for controlling the growth of the vine. The aim of this study was to evaluate the changes in the soil's chemical properties, leaf composition and branch growth of Cabernet Sauvignon vine caused by the cover crops in the vineyard. The study was carried in an experiment conducted from 2009 in the highlands of Santa Catarina state, where the soil and climatic conditions favor the excessive growth of the vine. The treatments consisted of three types of cover crops, two management and a control. The cover crops were annual, buckwheat (Fagopyrum esculentum) and ryegrass (Lolium multiflorum), the perennial fescue (Festuca arundinacea) and the native (spontaneous), while the managements were mowed with the crop residue in total area and, with its transfer from the row to the between row of the vine. Samples of leaves and soil were carried out in "veraison" and at end of grape maturation stages, respectively. The cover crops and its management in general did not change the soil pH, or the exchangeable content of Al, Ca and Mg, but the annual did increase the available P...

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Section: Resultsunclassified

Cobertura do solo em vinhedos modifica os atributos do solo e o estado nutricional das videiras

Lehmann

Cassol

Sacomori

et al. 2016

Rev. Ciênc. Agrovet.

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“…In general, no-tillage system can reduce Al 3+ content and reduce Al 3+ toxicity by adding dissolved organic carbon to the soil (Spera et al, 2014). Long-term studies show that the decomposition of plant residues contributes to the neutralization of H + ions and organic complexation of Al 3+ , increasing soil pH (Miyazawa et al, 1993;Bressan et al, 2013).…”

Section: Other Soil Chemical Propertiesmentioning

confidence: 99%

Chemical attributes of agricultural soil after the cultivation of cover crops

Sousa¹,

Medeiros²,

Rosa³

et al. 2017

Aust J Crop Sci

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The use of cover crops is a strategy to maintain the productive capacity of agricultural soils. The increase of organic carbon content, nutrient cycling and, consequently, the increase in soil fertility are some of the greatest benefits. This study evaluated the chemical attributes of the soil after the use of cover crops species in the Cerrado region of Piaui. The experiment was carried out from January 2015 to July 2016. It was performed in a completely randomized block design with eleven treatments and four replicates. ), potential acidity (H + Al), soil organic carbon (OC), the saturation of bases (V%), saturation by aluminum (m%) and effective CEC were measured. Fifteen months after their establishment, cover crops positively influenced the levels of P, K and OC with no changes in the other chemical properties. The OC contents were higher with the use of C. cajan -cv. 'fava larga', brachiaria and C. ochroleuca + millet, mainly in the topsoil. C. espectabilis, spontaneous vegetation, M. aterrima, brachiaria and C. ochroleuca were the most efficient in K cycling.

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“…However, in the 0.10-0.20 m layer, the JB/MIL combination induced lower SOC levels than BRAQ and JB, while in the 0.20-0.40 m layer, compared to all other cover crops, grasses significantly increased SOC contents. Given the contribution of the root system to maintaining SOC levels, Bressan et al (2013) evaluated the effect of grasses on the chemical quality of Latossolo Amarelo (Oxisol) in the Cerrado biome and, similar to the results reported here, found that millet and Brachiaria species increased organic matter levels to a depth of 0.40 m. The SOC levels in the SPV were similar to those of the other cover crops in the 0.00-0.10 m layer, and did not differ from JB/MIL treatment in the 0.10-0.20 m layer or from that of JB/MIL and JB in the 0.20-0.40 m layer. These results indicate that an adequate management of native spontaneous vegetation is as important as cover crops for maintaining soil organic C levels, and that the removal of this vegetation, which is a common practice in commercial citrus orchards, will not only expose the soil but also result in the loss of soil organic C and nutrients.…”

Section: Total Soil Organic Carbon Storagementioning

confidence: 99%

Changes in Soil Organic Carbon Fractions in Response to Cover Crops in an Orange Orchard

Oliveira

Xavier

2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:The cultivation of cover crops intercropped with fruit trees is an alternative to maintain mulch cover between plant rows and increase soil organic carbon (C) stocks. The objective of this study was to evaluate changes in soil total organic C content and labile organic matter fractions in response to cover crop cultivation in an orange orchard. The experiment was performed in the state of Bahia, in a citrus orchard with cultivar 'Pera' orange (Citrus sinensis) at a spacing of 6 × 4 m. A randomized complete block design with three replications was used. The following species were used as cover crops: Brachiaria (Brachiaria decumbes) -BRAQ, pearl millet (Pennisetum glaucum) -MIL, jack bean (Canavalia ensiformis) -JB, blend (50 % each) of jack bean + millet (JB/MIL), and spontaneous vegetation (SPV). The cover crops were broadcast-seeded between the rows of orange trees and mechanically mowed after flowering. Soil sampling at depths of 0.00-0.10, 0.10-0.20, and 0.20-0.40 m was performed in small soil trenches. The total soil organic C (SOC) content, light fraction (LF), and the particulate organic C (POC), and oxidizable organic C fractions were estimated. Total soil organic C content was not significantly changed by the cover crops, indicating low sensitivity in reacting to recent changes in soil organic matter due to management practices. Grasses enabled a greater accumulation of SOC stocks in 0.00-0.40 m compared to all other treatments. Jack bean cultivation increased LF and the most labile oxidizable organic C fraction (F1) in the soil surface and the deepest layer tested. Cover crop cultivation increased labile C in the 0.00-0.10 m layer, which can enhance soil microbial activity and nutrient absorption by the citrus trees. The fractions LF and F1 may be suitable indicators for monitoring changes in soil organic matter content due to changes in soil management practices.

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Plantas de cobertura e qualidade química de Latossolo Amarelo sob plantio direto no cerrado maranhense

Cited by 17 publications

References 19 publications

Cobertura do solo em vinhedos modifica os atributos do solo e o estado nutricional das videiras

Cobertura do solo em vinhedos modifica os atributos do solo e o estado nutricional das videiras

Chemical attributes of agricultural soil after the cultivation of cover crops

Changes in Soil Organic Carbon Fractions in Response to Cover Crops in an Orange Orchard

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