scholarly journals Effects of soil moisture condition on weed emergence in soils of rainfed paddy fields in North-eastern Thailand

2001 ◽  
Vol 46 (Supplement) ◽  
pp. 178-179 ◽  
Author(s):  
H. Morita ◽  
N. Kabaki
Keyword(s):  
Soil Moisture ◽  
Paddy Fields ◽  
Moisture Condition ◽  
Soil Moisture Condition ◽  
North Eastern ◽  
Weed Emergence

Impact of climate change on soil moisture condition in Nova Scotia

2012 ◽  
Author(s):  
Raheleh Malekian ◽  
Robert Gordon ◽  
Ali Madani ASABE Member ◽  
Seyyed Ebrahim Hashemi
Keyword(s):  
Climate Change ◽  
Soil Moisture ◽  
Nova Scotia ◽  
Moisture Condition ◽  
Soil Moisture Condition ◽  
Impact Of Climate Change

scholarly journals Effect of soil moisture condition on the conversion rate of oxamyl.

1979 ◽  
Vol 27 (3) ◽  
pp. 191-198
Author(s):  
J.H. Smelt ◽  
A. Dekker ◽  
M. Leistra
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Conversion Rate ◽  
Soil Moisture Content ◽  
Loamy Sand ◽  
Clay Loam ◽  
Moisture Condition ◽  
Soil Moisture Condition ◽  
Incubation Experiments ◽  
Wilting Point

The decomposition of oxamyl in four soils under moist conditions was measured in incubation experiments at 15 deg C. Half-lives of oxamyl in soils with moisture tensions of approx. -9.8 X 103 Pa were 13 days in a clay loam, 14 days in a loamy sand, 34 days in a peaty sand and 39 days in a humic loamy sand. The rate of oxamyl decomposition in the clay loam decreased with decreasing soil moisture content down to values for below wilting point. Oxamyl decomposition in the humic loamy sand decreased with decreasing soil moisture content, but increased sharply in the very dry range. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Soil moisture obtained through remote sensing to assess drought events

2020 ◽  
Vol 24 (9) ◽  
pp. 575-580 ◽  
Author(s):  
Tiago de M. Inocêncio ◽  
Alfredo Ribeiro Neto ◽  
Alzira G. S. S. Souza
Keyword(s):  
Climate Change ◽  
Soil Moisture ◽  
Condition Index ◽  
Semiarid Region ◽  
Moisture Index ◽  
Moisture Condition ◽  
Soil Moisture Condition ◽  
Northeast Region ◽  
Promising Tool ◽  
Soil Moisture Index

ABSTRACT The sequence of drought events in the Northeast of Brazil in recent decades raises attention to the importance of studying this phenomenon. The objective of this study was to evaluate the duration and severity of drought events from 1988 to 2018 in hydrographic basins of the state of Pernambuco, Brazil, using two drought indexes: Standardized Soil Moisture Index and Soil Moisture Condition Index, calculated based on data of the Soil Moisture Project of the European Space Agency’s Climate Change Initiative. The duration of the droughts was determined considering the months between their beginning and end, and their severity was based on the area formed in the graph between the curve of the index and the x-axis. The soil moisture database showed to be a promising tool for the analysis and monitoring of drought events in the Northeast region of Brazil, mainly for analysis and monitoring of drought events. The indexes allowed the evaluation of the drought phenomenon over the 30-year period, showing increases from 2012, which were more pronounced in the Semiarid region. The hydrographic basins responded differently to a same event, depending on the climate characteristics of the region in which they are located. Consecutive years with rainfall below the historical mean increased the magnitude of the droughts, as found for the 2012-2017 period, in which the indexes presented delays to return to more favorable values, showing the effect that one drought year has on the following year.

Soil moisture condition and soil nitrogen dynamics in a pure Alnus japonica forest in Korea

2010 ◽  
Vol 7 (1) ◽  
pp. 93-99 ◽  
Author(s):  
Kyung Won Seo ◽  
Su Jin Heo ◽  
Yowhan Son ◽  
Nam Jin Noh ◽  
Sue Kyoung Lee ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Soil Nitrogen ◽  
Nitrogen Dynamics ◽  
Alnus Japonica ◽  
Moisture Condition ◽  
Soil Moisture Condition ◽  
Soil Nitrogen Dynamics

CO2, H2O and energy fluxes from chickpea crop grown under residual soil moisture condition in rainfed peninsular India using eddy covariance techniques

2021 ◽  
Vol 273 ◽  
pp. 108307
Author(s):  
Abhishek Chakraborty ◽  
Karun Kumar Choudhary ◽  
P. Srikanth ◽  
K.V. Ramana ◽  
M.V.R. Seshasai ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Eddy Covariance ◽  
Residual Soil ◽  
Energy Fluxes ◽  
Peninsular India ◽  
Moisture Condition ◽  
Soil Moisture Condition

scholarly journals Urea coated with poultry litter as an option in the control of nitrogen losses

2017 ◽  
Vol 21 (6) ◽  
pp. 398-403 ◽  
Author(s):  
Daniel J. Dall’Orsoletta ◽  
Luiz P. Rauber ◽  
Djalma E. Schmitt ◽  
Luciano C. Gatiboni ◽  
Jhonatan Orsolin
Keyword(s):  
Soil Moisture ◽  
Poultry Litter ◽  
Nh3 Volatilization ◽  
N Losses ◽  
Mineral N ◽  
Moisture Condition ◽  
N Transformations ◽  
Total N ◽  
Soil Moisture Condition ◽  
Moisture Contents

ABSTRACT The volatilization of ammonia (NH3) and nitrate leaching (NH3-) are the main processes of nitrogen (N) loss in the soil. The objective of the study was to evaluate N losses by NH3 volatilization and mineral N transformations in the soil with urea coated with poultry litter (urea + litter) compared with other sources of N, under two moisture conditions. The experiment was conducted in a controlled environment with a 5 x 2 factorial arrangement with four replicates, five N sources (urea, SuperN®, Kimcoat®, urea + litter and control without fertilizer) and two moisture contents [80 and 100% of field capacity (FC)]. The total volatilized NH3 did not differ between the sources, regardless of the soil moisture condition, ranging from 10.8 to 13.2% of the total N applied. The transformation of NH4+ into NH3- did not vary between the sources, except for the control, but it differed between soil moisture contents, with equilibrium estimated at 31 and 38 days, in the treatments with 80 and 100% FC, respectively. The urea + litter has N losses by NH3 volatilization and speed of transformation of the soil mineral N similar to those of the other sources, and can be used to substitute them.

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