Topsoil reduction and cereal yields on loess soils of southeast Poland

2010 ◽  
Vol 21 (4) ◽  
pp. 401-405 ◽  
Author(s):  
J. Rejman ◽  
I. Iglik
Keyword(s):  
Loess Soils ◽  
Cereal Yields

scholarly journals CPT Parameters of Loess Subsoil in Lublin Area

2021 ◽  
Vol 11 (13) ◽  
pp. 6020
Author(s):  
Krzysztof Nepelski ◽  
Agnieszka Lal
Keyword(s):  
Water Content ◽  
Building Structures ◽  
Load Bearing ◽  
Engineering Research ◽  
Loess Soils ◽  
Epigenetic Processes

Loess soils were created by the wind transporting particles with later or in parallel occurred protogenetic, syngenetic and epigenetic processes. As a result, various genetic processes affected loesses strength and deformability characteristics. The aim of the study is to estimate the main CPT parameters of loess subsoil in Lublin area according to divided facies. The subsoil in the area of the Nałęczowski Plateau, where Lublin is located, consists mainly of loess from aeolian and aeolian–diluvial facies, and in the deeper parts—from aeolian–alluvial facies. Most of the results obtained for the aeolian facies at the level of qc in the range from 4.5 to 8.0 MPa indicate that these soils are a good load-bearing substrate for building structures. Cone resistances mostly at the level of 1.5–4.0 MPa for the diluvial and alluvial facies confirm that these facies constitute less favorable foundation conditions. The reduced resistance results mainly from the increased water content in ground pores. It is especially the soils of the diluvial facies that provide unfavorable foundation conditions, as they occur near the surface. Genetic processes are a very important element that should be taken into account in engineering research.

scholarly journals Enhanced sustainable green revolution yield via nitrogen-responsive chromatin modulation in rice

Science ◽  
2020 ◽  
Vol 367 (6478) ◽  
pp. eaaz2046 ◽  
Author(s):  
Kun Wu ◽  
Shuansuo Wang ◽  
Wenzhen Song ◽  
Jianqing Zhang ◽  
Yun Wang ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Green Revolution ◽  
Agricultural Sustainability ◽  
Nitrogen Use ◽  
Polycomb Repressive Complex 2 ◽  
Della Proteins ◽  
Genome Wide ◽  
Use Efficiency ◽  
Low Nitrogen ◽  
Cereal Yields

Because environmentally degrading inorganic fertilizer use underlies current worldwide cereal yields, future agricultural sustainability demands enhanced nitrogen use efficiency. We found that genome-wide promotion of histone H3 lysine 27 trimethylation (H3K27me3) enables nitrogen-induced stimulation of rice tillering: APETALA2-domain transcription factor NGR5 (NITROGEN-MEDIATED TILLER GROWTH RESPONSE 5) facilitates nitrogen-dependent recruitment of polycomb repressive complex 2 to repress branching-inhibitory genes via H3K27me3 modification. NGR5 is a target of gibberellin receptor GIBBERELLIN INSENSITIVE DWARF1 (GID1)–promoted proteasomal destruction. DELLA proteins (characterized by the presence of a conserved aspartate-glutamate-leucine-leucine-alanine motif) competitively inhibit the GID1-NGR5 interaction and explain increased tillering of green revolution varieties. Increased NGR5 activity consequently uncouples tillering from nitrogen regulation, boosting rice yield at low nitrogen fertilization levels. NGR5 thus enables enhanced nitrogen use efficiency for improved future agricultural sustainability and food security.

scholarly journals Linking Climate Change, Pollinators and Cereal Yields in Kenya

OALib ◽  
2020 ◽  
Vol 07 (07) ◽  
pp. 1-11
Author(s):  
Obed Nyangena ◽  
Victor Kidake Senelwa ◽  
Rachel Ngesa
Keyword(s):  
Climate Change ◽  
Cereal Yields

Silicatization of loess soils

1965 ◽  
Vol 2 (1) ◽  
pp. 3-7 ◽  
Author(s):  
V. E. Sokolovich
Keyword(s):  
Loess Soils

Cereal yields and drought resistance

Nature ◽  
1980 ◽  
Vol 285 (5767) ◽  
pp. 612-613 ◽  
Author(s):  
S.A. Quarrie
Keyword(s):  
Drought Resistance ◽  
Cereal Yields
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