Coberturas do solo sobre a amplitude térmica e a produtividade de pimentão

Coelho, M.F.B.; Freitas, Francisco Cláudio Lopes de; Cunha, Jorge Luíz Xavier Lins; Silva, K.S.; Grangeiro, Leílson Costa; Oliveira, Joaquim Branco de

doi:10.1590/s0100-83582013000200014

Cited by 23 publications

(17 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Straw mulch has been shown to reduce Ts (Silva et al, 2006;Webler et al, 2016) and thermal amplitude (Dahiya et al, 2007;Furlani et al, 2008;Coelho et al, 2013). Ramakrishna et al (2006) and Liu et al (2014) found that, during cold periods, Ts of covered soil is greater than that of bare soil; however, the inverse was observed during hot periods.…”

Section: Alterações Da Temperatura Em Solo Coberto De Palha De Aveia-mentioning

confidence: 99%

Temperature changes in soil covered by black oat straw

Zwirtes

Reinert

Gubiani

et al. 2017

Pesq. agropec. bras.

View full text Add to dashboard Cite

-The objective of this work was to evaluate the effect of different amounts of black oat (Avena strigosa) straw covering soil surface on soil temperature at different depths. The treatments consisted of 0, 3, 6, and 9 Mg ha -1 straw. Soil temperature was measured hourly by a thermocouple inserted at different depths (0, 5, 15, 30, and 50 cm) and was used to adjust an equation correlating the temperature of covered soil with that of bare soil. With the correlations, it was possible to observe a point value of temperature (inversion temperature of straw effect), below which the presence of straw acts positively on the maintenance of soil temperature and above which the presence of straw acts negatively on soil heating.Index terms: Avena strigosa, inversion temperature, mulch effect, no-tillage, plant residue, soil thermal regime. Alterações da temperatura em solo coberto de palha de aveia-pretaResumo -O objetivo deste trabalho foi avaliar o efeito de diferentes quantidades de palha de aveia-preta (Avena strigosa) em cobertura do solo sobre a temperatura do solo em diferentes profundidades. Os tratamentos consistiram de 0, 3, 6 e 9 Mg ha -1 de palha. A temperatura do solo foi medida a cada hora por meio de termopares inseridos em diferentes profundidades (0, 5, 15, 30 e 50 cm) e usada para ajustar uma equação que correlaciona a temperatura do solo coberto com a do solo descoberto. A partir dessas correlações, foi possível observar um valor pontual de temperatura (temperatura de inversão do efeito da palha), abaixo do qual a presença de palha atua positivamente na manutenção da temperatura do solo e acima do qual a presença de palha atua negativamente no aquecimento do solo.Termos para indexação: Avena strigosa, temperatura de inversão, efeito da palha, plantio direto, resíduo vegetal, regime térmico do solo.

show abstract

Section: Alterações Da Temperatura Em Solo Coberto De Palha De Aveia-mentioning

confidence: 99%

Temperature changes in soil covered by black oat straw

Zwirtes

Reinert

Gubiani

et al. 2017

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…Tal fato pode estar relacionado ao índice de cobertura vegetal que é menor nesses sistemas, favorecendo maior incidência de radiação solar diretamente sobre a superfície do solo. COELHO et al (2013), ao estudarem estratégias de manejo de plantas daninhas na variação da temperatura do solo cultivado com pimentão, verificaram amplitude térmica de 11 °C entre os tratamentos com capinas regulares e com filme de polietileno, ou seja, o solo sem cobertura apresenta maior temperatura.…”

Section: Fatoresunclassified

Umidade e temperatura de argissolo amarelo em sistemas de preparo e estádios de desenvolvimento do milho

et al. 2015

View full text Add to dashboard Cite

RESUMO:Os sistemas de preparo do solo afetam a quantidade de resíduo vegetal sobre a superfície do solo e, consequentemente, sua umidade e temperatura. Objetivou-se avaliar a temperatura e a umidade do Argissolo Amarelo em estádios de desenvolvimento da cultura do milho sob sistemas de preparo mecanizado. O experimento foi conduzido no delineamento em blocos inteiramente casualizados, com quatro repetições, em Petrolina -PE. Os sistemas de preparo do solo foram: sem preparo primário, grade off-set de discos de 0,56 m, grade off-set de discos de 0,61 m, escarificador e arado de aivecas. As leituras de umidade e temperatura foram realizadas ao longo do dia, nos horários de 6; 9; 12; 15 e 18 h, nos estádios de desenvolvimento V3, V8, R3 e R6 do milho. A umidade do solo foi avaliada na camada de 0,00-0,05 m utilizando-se do método gravimétrico, e a temperatura do solo na superfície, utilizando-se de termômetro infravermelho. Os sistemas de preparo do solo e os horários de leitura influenciaram na umidade e na temperatura do solo. Os maiores valores de umidade ocorreram no período da manhã, enquanto a maior temperatura do solo ocorreu na parte da tarde. PALAVRAS-CHAVE:mecanização agrícola, Semiárido Nordestino, variação térmica. SOIL MOISTURE CONTENT AND SURFACE TEMPERATURE IN TILLAGE SYSTEMS AND STAGES OF DEVELOPMENT OF MAIZE CROP ABSTRACT:The tillage systems affect the amount of crop residue on the soil surface, and hence its temperature and moisture content. To evaluate the variation of moisture content and soil temperature in systems of tillage on maize growth stages, an experiment was conducted in Ultisol.The experiment was conducted with randomized complete block with four replications in Petrolina -PE, Brazil. The treatments consisted of five tillage systems applied to the plots -unprepared primary, off-set disc harrow of 0.56 m, off-set disc harrow of 0.61 m, chisel plow and moldboard plow. The soil moisture and temperature readings were taken at 6, 9, 12, 15 and 18 h for the different maize stages V3, V8, R3 and R6. Soil moisture was measured in the layer between 0.00-0.05 m by means of deformed samples by using gravimetric method and soil temperature at the surface with infrared thermometer. Systems of soil tillage and hours of reading influenced the moisture and soil temperature. The highest values of soil moisture content occur in the morning, while the highest temperature of the soil in the afternoon.

show abstract

“…Furthermore, soil cover with plant residue in the no-tillage system may offer lower heating and soil thermal amplitude, which, in a tropical climate with high environmental temperature, favors crop development (Resende et al, 2005;Coelho et al, 2013) and offers favorable conditions in terms of water, oxygen, and substrate availability, favoring the soil microbial community (Moreira and Siqueira, 2002). However, the response of the microbial community to the tillage and soil cover systems depends on the species used and the edaphic and climatic conditions (Gama-Rodrigues et al, 2005;Cunha et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

Nascimento

Cruz

Dantas

et al. 2016

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

ABSTRACT:Microorganisms have a fundamental importance in agricultural ecosystems and may be influenced by several factors, including soil management. The aim of this study was to evaluate the effects of cropping systems and soil covers on the microbial community in soil cultivated with muskmelon (Cucumis melo L.). The experiment was conducted in a randomized complete block design with four replications. The treatments were arranged in a split plot design with cropping systems (no-tillage and conventional tillage systems) assigned to the whole plot treatments, while a group of seven soil covers (sunn hemp; millet; sunn hemp + millet; corn + brachiaria; spontaneous vegetation; bare soil; and spontaneous vegetation + polyethylene film) defined the subplot treatments. Total bacteria, sporulating bacteria, fluorescent Pseudomonas sp., and total fungi were quantified at six different times (in fallow soil, at planting of green manures in the soil, when transplanting muskmelon seedlings, and 20, 40, and 60 days after transplanting [DAT]). To determine the quantity of microorganisms, the plate count method was used, with a specific culture medium for the groups. The cultivation of sunn hemp associated with no-tillage at transplanting of muskmelon showed a greater quantity of colony forming units (CFUs) of total bacteria compared to the conventional tillage system. In most treatments, conventional tillage showed greater amounts of sporulating bacteria in relation to no-tillage at the time of transplanting muskmelon and at 40 DAT. The tillage systems and soil cover did not change the total amount of fungi and fluorescent Pseudomonas sp.

show abstract

Coberturas do solo sobre a amplitude térmica e a produtividade de pimentão

Cited by 23 publications

References 12 publications

Temperature changes in soil covered by black oat straw

Temperature changes in soil covered by black oat straw

Umidade e temperatura de argissolo amarelo em sistemas de preparo e estádios de desenvolvimento do milho

Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

Contact Info

Product

Resources

About