نتایج جستجو برای: nitrogen agronomic efficiency

تعداد نتایج: 506057  

2016
Jingguang Chen Yong Zhang Yawen Tan Min Zhang Longlong Zhu Guohua Xu Xiaorong Fan

The importance of the nitrate (NO3-) transporter for yield and nitrogen-use efficiency (NUE) in rice was previously demonstrated using map-based cloning. In this study, we enhanced the expression of the OsNRT2.1 gene, which encodes a high-affinity NO3- transporter, using a ubiquitin (Ubi) promoter and the NO3--inducible promoter of the OsNAR2.1 gene to drive OsNRT2.1 expression in transgenic ri...

2013
Jason P. Wight Frank M. Hons Sanique M. South Godson O. Osuji

Peroxidases (EC 1.11.1.7) participate in lignin biosynthesis. But peroxidation is not a tool for assaying lignocellulose metabolism because the active cannot yet be separated from the inactive peroxidases. A biochemical tool for assaying plant cell wall responses to agronomic practices is needed in the lignocellulosic feedstock renewable energy industry. Peroxidase of biomass sorghum was purifi...

Journal: :Ambio 2002
Kenneth G Cassman Achim Dobermann Daniel T Walters

The global challenge of meeting increased food demand and protecting environmental quality will be won or lost in cropping systems that produce maize, rice, and wheat. Achieving synchrony between N supply and crop demand without excess or deficiency is the key to optimizing trade-offs amongst yield, profit, and environmental protection in both large-scale systems in developed countries and smal...

Journal: :Journal of animal science 2015
V Niderkorn C Martin Y Rochette S Julien R Baumont

The aim of this study was to assess the associative effects between orchardgrass () and red clover () silages as a model of preserved grass-legume mixture on voluntary intake parameters and digestive efficiency in sheep. Ten sheep were assigned to a repeated 5 × 5 Latin square design, in which 5 proportions of orchardgrass and red clover silages were tested (0:100, 25:75, 50:50, 75:25, and 0:10...

2008
M. L. Gnyp W. Koppe X. Chen F. Zhang G. Bareth

High nitrogen fertiliser applications are very common in many densely populated areas as in the North China Plain (NCP). A still growing population and an ongoing economic progress enforce that process. Remote sensing methods can help to optimize the N-management for diagnosing crop N status on a field and regional level. For that purpose, spectral and agronomic data were collected during the v...

2006

A capability to determine the availability of nitrogen in organic amendments is necessary to ensure that such materials will provide sufficient nitrogen to the growing crop and cause minimal environmental degradation. Greenhouse bioassays were used to evaluate N availability of organic by-products, including several employed in the field study of this research. Tall fescue was grown in greenhou...

Journal: :Agronomy 2022

Increasing drought incidence and infertile soils require the improvement of maize for nitrogen use efficiency (NUE) under conditions. The objectives were to assess tolerance genetic effects Algerian populations no-nitrogen water stress. We evaluated a diallel among six vs. 120 kg/ha N fertilization control. Variability was significant their crosses NUE drought. Additive could be capitalized usi...

J. Zhao W. Duan Y. Shi, Zh. Yu

A field experiment was conducted to examine the effects of different depths ofnitrogen (N) fertiliser placements on N accumulation, remobilisation and NO3−-Ncontent in soil of rainfed wheat. Nitrogen was applied on the surface (D1) and inthe 10 cm (D2), 20 cm (D3) and 30 cm (D4) soil layers from 2010 to 2012.Compared with D1 and D2, D3 and D4 treatments obtained significant higher Ndistribution...

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