scholarly journals Maize response to free air CO2 enrichment under ample and restricted water supply: field experimental data and output of a process-based hydrological plant growth model

2020 ◽  
Vol 6 ◽  
pp. 34-38
Author(s):  
Remy Manderscheid ◽  
Martin Erbs ◽  
Juliane Kellner ◽  
Liane Hüther ◽  
Philipp Kraft ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Water Supply ◽  
Co2 Enrichment ◽  
Soil Condition ◽  
Crop Modeling ◽  
Area Index ◽  
Free Air ◽  
Final Yield ◽  
Stem Reserves ◽  
Experimental Findings

This paper contains data from a two year FACE experiment with maize (Zea mays L., cv. ‘Romario’) investigating the interaction of two CO2 concentrations (378, 550 ppm) and two levels of water supply (sufficient: wet, limited: dry) on crop growth and plant composition. In the second year soil cover was also varied to test whether mitigation of evaporation by straw mulch increases the CO2 effect on water use efficiency. The datasets assembled herein contain data on weather, management, soil condition, soil moisture, phenology, dry weights and N concentrations of the plant (leaves, stems, cobs), green leaf area index, stem reserves, final yield and quality-related traits in the total plant and grains. Most of the experimental findings have already been published in scientific journals. Moreover, the data have been used in two crop modeling studies, and simulation results (on soil moisture, transpiration, evaporation and biomass) of one of these studies are also shown here.

Promise and pitfalls of modeling grassland soil moisture in a free-air CO2 enrichment experiment (BioCON) using the SHAW model

Pedosphere ◽  
2021 ◽  
Vol 31 (5) ◽  
pp. 783-795
Author(s):  
Raquel H. FLINKER ◽  
M. Bayani CARDENAS ◽  
Todd G. CALDWELL ◽  
Gerald N. FLERCHINGER ◽  
Roy RICH ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Co2 Enrichment ◽  
Grassland Soil ◽  
Free Air Co2 Enrichment ◽  
Free Air

scholarly journals Mesoscale Modeling of the Meteorological Impacts of Irrigation during the 2012 Central Plains Drought

2017 ◽  
Vol 56 (5) ◽  
pp. 1259-1283 ◽  
Author(s):  
Clint Aegerter ◽  
Jun Wang ◽  
Cui Ge ◽  
Suat Irmak ◽  
Robert Oglesby ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Land Surface ◽  
Wrf Model ◽  
The United States ◽  
Satellite Observations ◽  
Temperature Decrease ◽  
Crop Modeling ◽  
Central Plains ◽  
Area Index ◽  
Community Land Model

AbstractIn the summer of 2012, the central plains of the United States experienced one of its most severe droughts on record. This study examines the meteorological impacts of irrigation during this drought through observations and model simulations using the Community Land Model coupled to the Weather Research and Forecasting (WRF) Model. A simple parameterization of irrigation processes is added into the WRF Model. In addition to keeping soil moisture in irrigated areas at a minimum of 50% of soil moisture hold capacity, this irrigation scheme has the following new features: 1) accurate representation of the spatial distribution of irrigation area in the study domain by using a MODIS-based land surface classification with 250-m pixel size and 2) improved representation of the time series of leaf area index (LAI) values derived from crop modeling and satellite observations in both irrigated and nonirrigated areas. Several numerical sensitivity experiments are conducted. The WRF-simulated temperature field when including soil moisture and LAI modification within the model is shown to be most consistent with ground and satellite observations, all indicating a temperature decrease of 2–3 K in irrigated areas relative to the control run. Modification of LAI in irrigated and dryland areas led to smaller changes, with a 0.2-K temperature decrease in irrigated areas and up to a 0.5-K temperature increase in dryland areas. Furthermore, the increased soil moisture and modified LAI are shown to lead to statistically significant increases in surface divergence and surface pressure and to decreases in planetary boundary layer height over irrigated areas.

Soil Moisture based Automatic Irrigation System to Improve Water Productivity

2020 ◽  
Vol 7 (04) ◽  
Author(s):  
PRADEEP H K ◽  
JASMA BALASANGAMESHWARA ◽  
K RAJAN ◽  
PRABHUDEV JAGADEESH
Keyword(s):  
Soil Moisture ◽  
Soil Moisture Content ◽  
Irrigation System ◽  
Water Productivity ◽  
Vital Role ◽  
Agricultural Water Management ◽  
Water Management System ◽  
Proposed Model ◽  
Crop Growth Stage ◽  
Experimental Findings

Irrigation automation plays a vital role in agricultural water management system. An efficient automatic irrigation system is crucial to improve crop water productivity. Soil moisture based irrigation is an economical and efficient approach for automation of irrigation system. An experiment was conducted for irrigation automation based on the soil moisture content and crop growth stage. The experimental findings exhibited that, automatic irrigation system based on the proposed model triggers the water supply accurately based on the real-time soil moisture values.

scholarly journals Soil and Water Warming Accelerates Phenology and Down-Regulation of Leaf Photosynthesis of Rice Plants Grown Under Free-Air CO2 Enrichment (FACE)

2014 ◽  
Vol 55 (2) ◽  
pp. 370-380 ◽  
Author(s):  
Minaco Adachi ◽  
Toshihiro Hasegawa ◽  
Hiroshi Fukayama ◽  
Takeshi Tokida ◽  
Hidemitsu Sakai ◽  
...  
Keyword(s):  
Co2 Enrichment ◽  
Leaf Photosynthesis ◽  
Down Regulation ◽  
Rice Plants ◽  
Free Air Co2 Enrichment ◽  
Free Air ◽  
Soil And Water

Water demand and water use efficiency of winter barley in Hungary

2011 ◽  
Vol 59 (1) ◽  
pp. 13-22
Author(s):  
Z. Varga-Haszonits ◽  
E. Enzsölné Gerencsér ◽  
Z. Lantos ◽  
Z. Varga
Keyword(s):  
Soil Moisture ◽  
Water Supply ◽  
Water Use Efficiency ◽  
Water Use ◽  
Potential Evapotranspiration ◽  
Growth Period ◽  
Winter Barley ◽  
Potential Yield ◽  
Yield Data ◽  
Use Efficiency

The temporal and spatial variability of soil moisture, evapotranspiration and water use were investigated for winter barley. Evaluations were carried out on a database containing meteorological and yield data from 15 stations. The spatial distribution of soil moisture, evapotranspiration and water use efficiency (WUE) was evaluated from 1951 to 2000 and the moisture conditions during the growth period of winter barley were investigated. The water supply was found to be favourable, since the average values of soil moisture remained above the lower limit of favourable water content throughout the growth period, except for September–December and May–June. The actual evapotranspiration tended to be close to the potential evapotranspiration, so the water supplies were favourable throughout the vegetation period. The calculated values of WUE showed an increasing trend from 1960 to 1990, but the lower level of agricultural inputs caused a decline after 1990. The average values of WUE varied between 0.87 and 1.09 g/kg in different counties, with higher values in the northern part of the Great Hungarian Plain. The potential yield of winter barley can be calculated from the maximum value of WUE. Except in the cooler northern and western parts of the country, the potential yield of winter barley, based on the water supply, could exceed 10 t/ha.

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