Water use pattern and productivity of rainfed yellow sarson (Brassica rapa L. var glauca) in relation to tillage and mulching

Moitra, R.; Ghosh, Dulal C.; Sarkar, S.

doi:10.1016/0167-1987(96)01010-0

Cited by 24 publications

(16 citation statements)

References 9 publications

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“…A palha também impede o impacto direto da água da chuva no solo, o que evita a formação do selamento superficial (Barcelos et al, 1999), que auxilia na formação de uma camada de solo mais seca, próximo à superfície. A camada seca quebra a continuidade dos poros com o restante do perfil do solo (Aydin et al, 2005), o que praticamente não ocorre em solo sob plantio direto, onde a continuidade porosa e a condutividade de água do interior do perfil para a superfície é mantida (Moitra et al, 1996). Na avaliação da representatividade da técnica dos microlisímetros para medição direta da evaporação da ).…”

Section: Resultsunclassified

Evaporação da água na superfície do solo em sistemas de plantio direto e preparo convencional

Dalmago

Bergamaschi

Krüger

et al. 2010

Pesq. agropec. bras.

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Resumo -Este trabalho teve por objetivos quantificar a evaporação da água na superfície do solo, em plantio direto e em preparo convencional, e avaliar o uso de microlisímetros de pesagem para medir esse processo. As medições foram feitas em campo, nos verões de 2001/2002, 2002/2003 e 2004/2005, em experimentos irrigados e não irrigados. Utilizaram-se delineamentos inteiramente casualizados, com quatro repetições, cujos tratamentos consistiram de sistemas de manejo do solo -plantio direto e preparo convencional -, e a presença ou ausência de cultivo de milho. Mediu-se a evaporação diária durante períodos de secagem do solo, entre precipitações ou irrigações consecutivas. Em experimentos sem irrigação, a evaporação acumulada foi maior sob plantio direto, na maioria dos períodos de medição, independentemente da presença da lavoura de milho. Nos experimentos com irrigação, a evaporação não apresentou diferenças regulares entre sistemas de manejo de solo. Normalmente, no início dos períodos de medição, com dois a cinco dias de secagem do solo, a evaporação foi maior em solo sob preparo convencional, tendo-se tornado maior em plantio direto, no restante do período de secagem. O emprego de microlisímetros de pesagem é eficiente para medir a evaporação na superfície do solo.Termos para indexação: Zea mays, água no solo, balanço hídrico, microlisímetro, preparo do solo, semeadura direta. Soil surface water evaporation under no-tillage and conventional tillage systemsAbstract -This work aimed to quantify the evaporation of water on the soil surface under no-tillage and conventional tillage systems, and to evaluate the microlysimeters use to measure this process. Measurements were performed in the field, during the summers of

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Section: Resultsunclassified

Evaporação da água na superfície do solo em sistemas de plantio direto e preparo convencional

Dalmago

Bergamaschi

Krüger

et al. 2010

Pesq. agropec. bras.

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“…On each sampling occasion, the approach used by Hulugalle and Lal (1986), Moitra et al (1996) and Zougmore et al (2004) in determining the storage in a 0.5 m layer in similar studies with soils of the same textural class (sandy loam) as the present soil, was adopted. This involved the use of a graduated tube auger to sample down to the 0.5 m depth in a single swoop and partitioning the soil sample into top-(0-0.3 m) soil and sub-(0.3-0.5 m) soil, before determining their water contents gravimetrically.…”

Section: Methodsmentioning

confidence: 99%

Water use and grain yield response of rainfed soybean to tillage-mulch practices in southeastern Nigeria

Obalum

Igwe

Eze

et al. 2011

Sci. agric. (Piracicaba, Braz.)

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Despite the agronomic, economic and food values of soybean (Glycine max L. Merrill), there is still dearth of information on the tillage need and the implications of surface mulch for the crop in the eastern part of the forest-savanna transition zone of Nigeria. This study was therefore carried out on a sandy loam Ultisol at Nsukka with a sub-humid climate, during 2006 and 2007 cropping seasons. Our objective was to devise an appropriate tillage method for the crop from evaluated effects of no-till (NT), conventional tillage (CT) and mulch on selected key agronomic indices. Each of the NT and the CT was either unmulched (U) or mulched (M) in a split-plot, giving four treatments/tillage methods (NTU, NTM, CTU and CTM) randomized in four blocks. Rainfall was more favorable in the first than in the second season. The mean seasonal soil water storage (range, 99-109 mm) within 0.5-m soil layer differed among the treatments (NTU < CTU < NTM = CTM). However, for the first and second seasons, both water use (582-616 and 667-709 mm respectively) and grain yield (0.71-0.81 and 1.22-1.91 Mg ha -1 respectively) were not different. Mulch lowered the crop water use but had no influence on grain yield. Water use efficiency was enhanced with mulch only in the second season. Although either of the two mulch treatments (NTM/CTM) would be suitable for growing soybean especially in years of unfavorably distributed rainfall, NTM is a more rational choice than CTM. Rainfall adequacy at the critical reproductive stage of the crop showed to be a more important yield factor than the tested tillage methods.

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“…Straw mulch helped to reduce drainage loss by 3-6 mm over unmulched condition. An artificial barrier with straw mulch helped for slow and steady entry of water and thus reduced drainage loss (Moitra et al, 1996). Rainfall and drainage influenced actual evapotranspiration (ET a , Table 6).…”

Section: Field Water Balancementioning

confidence: 99%

“…In situ production of mulch materials is of great significance in rainfed agriculture (Sharma et al, 1990), but may not be sufficient in some areas. Variation in tillage practices in combination with different mulch management showed significant impact on productivity and water use pattern of oil seed crops in eastern India (Moitra et al, 1996). Zero tillage with surface mulch has been found to be a promising alternative to conventional tillage and gave higher yield as a consequence of improved water conservation (Lal, 1983;Tomar et al, 1992;Franzen et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Interactive effect of tillage depth and mulch on soil temperature, productivity and water use pattern of rainfed barley (Hordium vulgare L.)

Sarkar

Singh

2007

Soil and Tillage Research

134

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Water use pattern and productivity of rainfed yellow sarson (Brassica rapa L. var glauca) in relation to tillage and mulching

Cited by 24 publications

References 9 publications

Evaporação da água na superfície do solo em sistemas de plantio direto e preparo convencional

Evaporação da água na superfície do solo em sistemas de plantio direto e preparo convencional

Water use and grain yield response of rainfed soybean to tillage-mulch practices in southeastern Nigeria

Interactive effect of tillage depth and mulch on soil temperature, productivity and water use pattern of rainfed barley (Hordium vulgare L.)

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