The effects of different water and nitrogen managements on yield and nitrogen use efficiency in hybrid rice of China

Sun, Yongjian; Ma, Jun; Sun, Yuanyuan; Xu, Hong‐Guang; Yang, Zhiyuan; Liu, Shujin; Jia, Xin; Zheng, Huabin

doi:10.1016/j.fcr.2011.11.015

Cited by 175 publications

(121 citation statements)

References 24 publications

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“…Previous studies revealed that the grain yield and nitrogen usage efficiency was significantly related to enzyme activities. In the present study, the balanced fertilisation increased the Vmax value of soil dehydrogenase, a finding that is consistent with reported results (Colla et al, 2011;Sun et al, 2012). Based on the IFI values, the combination of organic and inorganic fertilisation is the best method to improve soil fertility.…”

Section: Discussionsupporting

confidence: 81%

The activity and kinetic parameters of oxidoreductases in phaeozem in response to long-term fertiliser management

Shang

Zhang

et al. 2012

J. Soil Sci. Plant Nutr.

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This study describes the effects of balanced versus nutrient-deficient fertilisation on soil nutrient content and selected oxidoreductase activity and kinetic parameters in a long-term (28 years) field experiment conducted using a phaeozem type soil in the Jilin Province of northeast China. As compared to no or unbalanced fertilisation, balanced fertilisation improved the overall chemical fertility of the soil and significantly increased the activities and Vmax values of soil dehydrogenase and catalase. Compared with control (CK), unbalanced fertilisation (with the exception of P deficiency) significantly increased the total carbon content and soil dehydrogenase activity but had less of an effect on the Vmax of the enzyme, whereas the soil catalase activity and its Vmax were less affected under unbalanced fertilisation conditions. The Km value of soil dehydrogenase increased with the application of chemical NPK combined with farmyard manure but decreased under the application of NPK, NP, and PK. The Km value of soil catalase decreased under the application of NK and showed little difference between CK and the other fertilisation treatments. The variations in the activities and kinetic parameters of the enzymes revealed the benefits of long-term balanced fertilisation, particularly the combined application of chemical and organic fertilisers, by improving the chemical and biological fertility of phaeozem. The results also indicated that unbalanced fertilisation with P deficiency (NK) could enhance phaeozem quality, but this effect was limited.

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Section: Discussionsupporting

confidence: 81%

The activity and kinetic parameters of oxidoreductases in phaeozem in response to long-term fertiliser management

Shang

Zhang

et al. 2012

J. Soil Sci. Plant Nutr.

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“…The strong interactive relationship between water availability and NUE as reported in (Albrizio et al, 2010;Teixeira et al, 2014), also explains how moisture regimes conditioned nitrogen responses across our tested sites. Similar result was reported in Sun et al (2012), while studying the effects of different water and nitrogen management practices on yield and NUE of rice in China. They found that, increased water availability improved NUE and rice yield compared to dry land rice, were water deficit led to poor NUE.…”

Section: Nitrogen Fertilizer Responsessupporting

confidence: 70%

“…Wang et al (2010a) calculated lower maize WUE in dryland environments with regular dry spells during tasselling. Despite, the observed low WUE, increased N-application proved to increase WUE, as also reported by (Sun et al, 2012). Page | 137 A nitrogen driven trade-off between NUE and WUE was also observed as in (Gong et al, 2011;.…”

Section: Resource Productivity and Nitrogen Driven Wue -Nue Trade-offsmentioning

confidence: 51%

Residue management strategies for the rainfed N-deprived maize-legume cropping systems of central Mozambique

Nhantumbo¹

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Identifying best-fit residue management strategies for Central Mozambique rain fed Ndeprived maize-legume cropping (LEINA) systems managed under conservation agriculture is critical to improve resource use efficiency and yields. Therefore, understanding under what circumstances positive and negative responses from carbon rich residue mulches are likely to occur and what drives farmers' decision on the adoption of technologies is critical to design relevant and feasible recommendations that fit farmers complex farming circumstances. Here I used household survey data, field experimentation and cropping systems modelling to: 1) characterize farm diversity and understand how it affects smallholder farmers resource use attitudes, management decisions and the likelihood to engage in sustainable intensification (SI) practices; 2) identify best-fit residue management strategies that are more likely to improve resource productivity and yields; and 3) develop simple rules of thumb to match residue management solutions to N-deprived smallholder farming systems.Household characterization data showed that, rather than farm size and labour availability, farmers resource use attitudes and household capacity to meet its annual food security and income generation targets where key farm differentiation factors, therefore critical to map farm typology feasible intensification options. Using a heuristic decision tree to group smallholder farmer into a new set of mutually exclusive farm typologies that highlight existing intragroup diversity among Mozambican small-scale farmers, three key typologies where identified. The resource endowed and innovative farmers (Type B); resource endowed but change resistant farmers (Type -A2); and resource constrained (Type -A1) farmers, who can also be maize self-sufficiency (Type-A1a) and the food insecure (Type-A1b). For the already maize self-sufficient Type-B and Type-A2 farms, the challenge is to improve agronomy to generate enough surplus and income from maize. Mechanization and labour qualification are critical for these groups. For resource constrained Type-A1 farmers, the primary challenge towards intensification is to generate enough income to improve the household maize self-sufficiency and income in the system. Considering its high market value and further contribution to soil N-availability, legume production is a feasible investment alternative. Nevertheless, two key intensification traps were identified: the household maize self-sufficiency and soil fertility perception, and land availability perception trap (extensification). The traps are perception based mind-sets that reflect farmers understanding of their circumstances and the strategies they use to materialize their annual food security and income generation targets. Page | iiField trials and model-assisted analyses (64 years) of carbon rich residues effects on a cereal (maize) and a legume (cowpea) crop, at different levels of N supply, and three soils of contrasting water holding capacity (WHC) showed that for Central...

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“…Sun et al (Sun et al, 2012) have found that there was significant correlation between GS activity in flag leaves and grain protein yield. Our study also found that the free proline contents in flag leaves and grains and grain protein contents were closely related to GS and GDH activities in flag leaves and grains.…”

Section: Discussionmentioning

confidence: 99%

Subsoiling Combined with Film Mulch Reduces Post-anthesis Proline Accumulation and Improves Water Storage and Grain Quality in Dryland Wheat Crop

Zhao¹

2017

IJAB

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This study aimed to investigate the effects of fallow tillage in fallow period combined with sowing methods in growth period on water storage post-anthesis proline accumulation and grain quality of dryland wheat. The field study was conducted at Wenxi experimental site of Shanxi Agricultural University. Tillage treatments included deep tillage (DT), subsoiling (SS) and sowing methods included drilling (DS), furrowing (FS) and film mulch (FM). Soil water storage, post-anthesis proline content, glutamine synthetase (GS) and glutamic acid dehydrogenase (GDH) activities grain protein content and wheat processing quality under different combinations of tillage and sowing treatments were determined. Soil water storage at the depth of 0-300 cm was improved by tillage in fallow period. Compared with other treatments combination of SS and FM significantly improved soil water storage and decreased proline content in flag leaf and grain. This combination also significantly increased GS activity and decreased GDH activity after anthesis. Additionally, grain protein content and processing quality including sedimentation value and wet/dry gluten contents were improved. Correlation analysis indicated that there were significant correlations between proline content and the activities of GS and GDH in grains between protein content and the activity of GS in flag leaves, as well as between protein content and sedimentation value and gluten content. Combination of SS with FM is the best integrated cultivation techniques in dryland wheat crop in terms of reducing post-anthesis proline accumulation and improving water storage and grain quality.

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The effects of different water and nitrogen managements on yield and nitrogen use efficiency in hybrid rice of China

Cited by 175 publications

References 24 publications

The activity and kinetic parameters of oxidoreductases in phaeozem in response to long-term fertiliser management

The activity and kinetic parameters of oxidoreductases in phaeozem in response to long-term fertiliser management

Residue management strategies for the rainfed N-deprived maize-legume cropping systems of central Mozambique

Subsoiling Combined with Film Mulch Reduces Post-anthesis Proline Accumulation and Improves Water Storage and Grain Quality in Dryland Wheat Crop

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