Results 21 to 30 of about 222,639 (214)

Soil organic matter influences the agronomic efficiency of boron fertilizers in sandy Oxisol cultivated with soybean [PDF]

Scientia Agricola
Boron (B) is readily leached from the soil, depending on the soil texture, soil organic matter (OM) content, and the fertilizer source used. This can restrict B uptake by plants. Therefore, we investigated the most adequate B source for soybeans grown in
Leonardo Fernandes Sarkis, Flávio Henrique Silveira Rabêlo, Franz Walter Rieger Hippler, Douglas Guelfi   +3 more
doaj   +1 more source

Trace Elements in Soils of the South Texas Uranium District: Concentrations, Origin, and Environmental Significance [PDF]

, 1980
UT ...
Henry, Christopher D., Kapadia, Rajesh R.   +1 more
core   +1 more source

Water Movement and Finger Flow Characterization in Homogeneous Water-Repellent Soils

Vadose Zone Journal, 2018
Soil water repellency (SWR) is a widespread property in soils around the world. It influences soil water movement and causes unstable flow. The mechanics of finger flow occurrence in water-repellent soils are not clearly understood.
Yichen Wang, Xiaofang Wang, Henry Wai Chau, Bingcheng Si, Ning Yao, Yi Li   +5 more
doaj   +1 more source

EFFECT OF GRADING OF SANDY SOIL ON STRENGTH OF CEMENT TREATED SANDY SOIL

Doboku Gakkai Ronbunshu, 1992
セメントを安定材に用いた事前混合処理土の強度は, セメントの種類とその添加率のみならず, 処理対象土の種類, 細粒分含有率によっても変化する. 本文は, それらの原因を明らかにするため, 粒度を調整した山砂事前混合処理土の強度とその粒子間隙におけるセメント水和物の架橋状況, さらに水セメント比が変化した場合の粒度の影響を検討した. その結果, 処理対象土の粒度が, 事前混合処理土の強度に影響を及ぼすのは, 貧配合の場合に限られること, そして粒子間隙の小さいものほど, セメント水和物の架橋が密であり, 事前混合処理土の強度が増大することなどを明らかにした.
Tsugumasa ITO, Yukikazu TSUJI
openaire   +2 more sources

The Effects of Different Soil Substrates on the Growth and Root Coixol Content of Local Coix Varieties in China

Agronomy
Coix lacryma-jobi L., an annual or perennial plant belonging to the Poaceae family, has long been cultivated as a food and medicine plant in China.
Junkai Liu, Puliang Lyu, Chao Wu, Fang Liu, Xue Zhao, Hui Tang   +5 more
doaj   +1 more source

Morphological and agrochemical soil characteristics of different types of landscapes of Dendropark Trostjanets of the NAS of Ukraine

Інтродукція Рослин, 2015
The results of studies of soils in Dendrological Park Trostjanets, which was carried out by Cherkasy branch of the Ukrainian State Institution of Orchards and Vineyards “Ukrhiprosad” in 1982 and our studies in 2013 are given.
I.M. Severin
doaj   +1 more source

Fine root dynamics and trace gas fluxes in two lowland tropical forest soils [PDF]

, 2005
Fine root dynamics have the potential to contribute significantly to ecosystem-scale biogeochemical cycling, including the production and emission of greenhouse gases.
Crill, Patrick M., Dias, Jadson D., Keller, Michael, McGroddy, Megan E., Silva, Hudson, Silver, Whendee L., Thompson, Andrew W., Varner, Ruth K.   +7 more
core   +2 more sources

Experimental study on the effect of different cement content on the improvement of dynamic characteristics of seismic-prone poor soil.

PLoS ONE
The improvement of sandy soils with poor seismic properties to modify their dynamic characteristics is of great importance in seismic design for engineering sites.
Yunhui Zhao, Feng Qiao, Fanchao Meng, Zhihua Zheng, Jiapei Gu, Haoyu Li   +5 more
doaj   +1 more source

Impact of Sewage Sludge on Water Movement in Calcareous Sandy Soils

Journal of Agricultural and Marine Sciences, 1997
The present study was undertaken to investigate the changes in soil physical properties and their effect on water movement under ponded irrigation. Sewage sludge was applied to 10 cm soil depth at rates of 0.25. 75  and 100 Mg-ha-1 to two disturbed soils
A.M. AI-Omran, M.I. AI-Wabel, A.A. Shalaby   +2 more
doaj   +1 more source

Quantification of C and N stocks in grassland topsoils in a Dutch region dominated by dairy farming [PDF]

Estimates on soil organic carbon (SOC) and nitrogen (N) stocks in soils cannot be directly calculated from routine soil analyses, since these often lack measurements on soil bulk density (Bd).
Akker, J.J.H., van den, Sonneveld, M.P.W.   +1 more
core   +2 more sources