Growth and yield formation of rice (Oryza sativa L.) in the water-saving ground cover rice production system (GCRPS)

Tao, Hongbin; Brueck, Holger; Dittert, Klaus; Kreye, Christine; Lin, Shan; Sattelmacher, B.

doi:10.1016/j.fcr.2005.01.019

Cited by 165 publications

(142 citation statements)

References 20 publications

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“…Therefore, alternatives are sought to allow a greater water use efficiency (Qu et al, 2008). Some alternatives include growing rice under aerobic conditions, in no-tillage system (Tao et al, 2006). …”

Section: Introductionmentioning

confidence: 99%

Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Nascente

Crusciol

Cobucci

2012

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of cover crops and their desiccation times on upland rice yield and on the levels of nitrate and ammonium in a no-tillage soil. The experiment was carried out in a randomized blocks, with split plots and three replicates. Cover crops (plots) were sowed in the offseason (March 2009). In November 2009, at 30, 20, 10 and 0 days before rice sowing (split plots), herbicide was applied on the cover crops (fallow, Panicum maximum, Urochloa ruziziensis, U. brizantha and millet). Straw and soil were sampled (0-10 cm) at the sowing day, and after 7, 14, 21, 28 and 35 days. Straws from millet and fallow were degraded more rapidly and provided the lowest level of nitrate in the soil. Urochloa ruziziensis, U. brizantha and P. maximum produced higher amounts of dry matter, and provided the highest levels of nitrate in the soil. Millet provides the lowest nitrate/ammonium ratio and the highest upland rice yield. Desiccations carried out at 30 and 20 days before sowing had the largest levels of nitrate in the soil at the sowing date. Nitrogen content and forms in the soil are affected by cover crops and their desiccation times.Index terms: Oryza sativa, Panicum maximum, Urochloa brizantha, Urochloa ruziziensis, millet, nitrogen. Amônio e nitrato no solo e produtividade do arroz de terras altas influenciados por plantas de cobertura e suas épocas de dessecaçãoResumo -O objetivo deste trabalho foi avaliar o efeito de plantas de cobertura e de suas épocas de dessecação na produtividade do arroz de terras altas e nos níveis de nitrato e amônio de solo em plantio direto. O experimento foi realizado em blocos ao acaso, com parcelas subdivididas e três repetições. As plantas de cobertura (parcelas) foram semeadas na entressafra (março de 2009). Em novembro de 2009, aos 30, 20, 10 e 0 dias antes da semeadura do arroz (parcelas subdivididas), realizou-se o manejo químico das plantas de cobertura (pousio, Panicum maximum, Urochloa ruziziensis, U. brizantha e milheto). As palhadas e o solo (camada 0-10 cm) foram amostrados no dia da semeadura do arroz e após 7, 14, 21, 28 e 35 dias. As palhas do milheto e do pousio degradaram-se mais rapidamente e proporcionaram os menores níveis de nitrato ao solo. Urochloa ruziziensis, U. brizantha e P. maximum produziram mais matéria seca e proporcionaram os maiores níveis de nitrato no solo. O milheto proporciona menor relação nitrato/amônio no solo e maior produtividade do arroz. A dessecação aos 30 e 20 dias da semeadura do arroz proporciona os maiores níveis de nitrato no solo, na data de plantio. O conteúdo e a forma do nitrogênio no solo são afetados pelas plantas de cobertura e por suas épocas de dessecação.

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Section: Introductionmentioning

confidence: 99%

Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Nascente

Crusciol

Cobucci

2012

Pesq. agropec. bras.

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“…In addition, climatic data were evaluated during the experiment period (Figure 1). of cover crops to seek a greater soil moisture conservation TAO et al, 2006;NASCENTE et al, 2013b). In this regard, the development of technologies that helps to increase the yield of rice on the upland environment, besides producing food and saving more water, could allow for an increase in the revenue of many farmers who depend on this grain to subsist (CGIAR, 2006).…”

Section: Site Descriptionsmentioning

confidence: 99%

“…To evaluate cover crop degradation, an exponential mathematical model was used (OLIVEIRA, 2010;PACHECO, 2009;THOMAS;ASAKAWA, 1993) with the formula y = y 0 . e (-kt) , equation (1), where y is the fraction of initial residue existing at time t, y 0 is the proportion of potentially decomposable residue and k is the constant of decomposition of the residue.…”

Section: Dry Matter Cover Crop Degradationmentioning

confidence: 99%

“…However, the reduction of available water resources due to the demands of the industry and population, mainly in Asia, and the search for alternatives to produce rice while allowing a greater economy of water has been in demand QU et al, 2008;COBUCCI, 2013a). Some alternatives include growing rice under aerobic conditions, irrigated or not, as well as the use of cover crops to seek a greater soil moisture conservation TAO et al, 2006;NASCENTE et al, 2013b). In this regard, the development of technologies that helps to increase the yield of rice on the upland environment, besides producing food and saving more water, could allow for an increase in the revenue of many farmers who depend on this grain to subsist (CGIAR, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development

Nascente

Crusciol

2013

Sem. Ci. Agr.

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The use of cover crops in no-tillage systems (NTS) increases the levels of organic matter and could increase the nitrogen content of the soil, contributing to reduce fertilizers costs. The knowledge of these processes is fundamental for deciding whether cover crops can be effectively incorporated into the agricultural production system. The objective of this study was to evaluate the effect of cover crop species on the levels of nitrate and ammonium in the soil in early upland rice development, as well upland rice yield. A field experiment was performed and treatments consisted of growing rice on five cover crops (Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, millet and fallow) in an NTS and two control treatments (Brachiaria brizantha and fallow) under a conventional tillage system, CTS, (one plowing and two disking). The experimental design was a complete randomized block with three replications. The soil samples were collected during a period of six weeks (0, 7, 14, 21, 28 and 35 days in relation to upland rice sowing). The cover crops Brachiaria brizantha, Panicum maximum and Brachiaria ruziziensis in the NTS and B. brizantha fallow incorporated into the CTS favored higher levels of nitrate in the soil. In contrast, B. brizantha and fallow in the CTS and millet and P. maximum in the NTS favored the buildup of high levels of ammonium in the soil. The treatments under the plowed cover crops millet and fallow allowed for a higher upland rice yield. The tillage system and nature of the cover crops could be used to achieve the desired levels and forms of nitrogen in soil. Key words: Brachiaria brizantha, Brachiaria ruziziensis, Panicum maximum, millet, fallow, soil management ResumoO uso de plantas de cobertura no sistema plantio direto (SPD) aumenta os níveis de matéria orgânica e pode ajudar a aumentar os teores de nitrogênio no solo contribuindo para reduzir os custos de fertilizantes. O conhecimento desse processo é fundamental para que as plantas de cobertura possam ser efetivamente incorporadas aos sistemas de produção agrícola. O objetivo deste estudo foi avaliar o efeito de espécies de plantas de cobertura nos níveis de nitrato e amônio no solo durante o desenvolvimento inicial do arroz de terras altas, bem como a produtividade do arroz. Um experimento de campo foi realizado e os tratamentos consistiram de cultivo de arroz sobre cinco plantas de cobertura (Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, milheto e pousio) no SPD e mais dois tratamentos controle (Brachiaria brizantha e pousio) no sistema de plantio convencional, PC (uma aração e duas gradagens). O delineamento experimental foi em blocos completos casualizados com três repetições. As amostras de solo foram coletadas por seis semanas (0, 7, 14, 21, 28 e 35 dias em relação à semeadura do

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“…Rice is a staple food for more than half of the global population; however, production uses 2-3 times more water than other cereal crops such as wheat or maize and uses 30% of the freshwater used for crops worldwide (Barker et al 1999). Half of the world's rice production is affected by water stress (Bouman et al 2005;Tao et al 2006;Yang and Zhang 2006).…”

Section: Drought Stressmentioning

confidence: 99%

Yield stability for cereals in a changing climate

Powell

Ravash

et al. 2012

Functional Plant Biol.

131

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Abstract. The United Nations Food and Agriculture Organisation (FAO) forecasts a 34% increase in the world population by 2050. As a consequence, the productivity of important staple crops such as cereals needs to be boosted by an estimated 43%. This growth in cereal productivity will need to occur in a world with a changing climate, where more frequent weather extremes will impact on grain productivity. Improving cereal productivity will, therefore, not only be a matter of increasing yield potential of current germplasm, but also of improving yield stability through enhanced tolerance to abiotic stresses. Successful reproductive development in cereals is essential for grain productivity and environmental constraints (drought, cold, frost, heat and waterlogging) that are associated with climate change are likely to have severe effects on yield stability of cereal crops. Currently, genetic gains conferring improved abiotic stress tolerance in cereals is hampered by the lack of reliable screening methods, availability of suitable germplasm and poor knowledge about the physiological and molecular underpinnings of abiotic stress tolerance traits.

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Growth and yield formation of rice (Oryza sativa L.) in the water-saving ground cover rice production system (GCRPS)

Cited by 165 publications

References 20 publications

Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Cover crops affecting levels of ammonium and nitrate in the soil and upland rice development

Yield stability for cereals in a changing climate

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