The goal of this study was to investigate the effect of various water-table management (WTM) practices on corn growth and yield and agricultural chemical concentrations in shallow groundwater. Field experiments were conducted for three years (1989-91) at the research sites near Ames and Ankeny. Water-table depths of 0.3, 0.6, and 0.9 m were maintained in field lysimeters at the Ames site, and variable water-table depths were maintained in a subirrigation field at the Ankeny site;Photosynthesis measurements were made regularly during the growing season, and yield data were collected at harvest. In 1989, a relatively dry year, photosynthesis rates were higher at shallow water-table depths than at deep water-table depths. In 1990, a very wet y...
Shallow water tables can contribute water for plant use; therefore, plant available water includes n...
A two-year field study was carried out in eastern Ontario to investigate the effects of water table ...
Better nitrogen (N) management practices can improve nitrogen uptake and possibly reduce nitrogen le...
This study was conducted to investigate the effects of different water table depths (WTDs) on plant ...
Field experiments were conducted for three years (1989-91) at the research farms of Iowa State Unive...
The effects of water table management practices (WTMP) on corn growth in 1989 and 1990 at two field ...
This study was conducted to investigate the effects of various water-table management (WTM) practice...
This study was conducted to investigate the effects shallow water table depths on soil aeration, gro...
The use of agricultural chemicals, such as nitrogen fertilizers in corn production, often results in...
Experiments were conducted in lysimeters to study the effect of shallow water table (WT) depths on t...
The use of water table management practices could minimize off-siteimpacts of agri-chemicals by redu...
A water quality model for subirrigation and subsurface drainage, ADAPT (Agricultural Drainage And Pe...
Contamination of groundwater by nitrate and pesticides has been documented by various state and fede...
The cumulative effects of management practices on nitrate-nitrogen (NO3-N) leaching and ground water...
In May 1988 sampling was initiated to evaluate water quality in relation to management practices at ...
Shallow water tables can contribute water for plant use; therefore, plant available water includes n...
A two-year field study was carried out in eastern Ontario to investigate the effects of water table ...
Better nitrogen (N) management practices can improve nitrogen uptake and possibly reduce nitrogen le...
This study was conducted to investigate the effects of different water table depths (WTDs) on plant ...
Field experiments were conducted for three years (1989-91) at the research farms of Iowa State Unive...
The effects of water table management practices (WTMP) on corn growth in 1989 and 1990 at two field ...
This study was conducted to investigate the effects of various water-table management (WTM) practice...
This study was conducted to investigate the effects shallow water table depths on soil aeration, gro...
The use of agricultural chemicals, such as nitrogen fertilizers in corn production, often results in...
Experiments were conducted in lysimeters to study the effect of shallow water table (WT) depths on t...
The use of water table management practices could minimize off-siteimpacts of agri-chemicals by redu...
A water quality model for subirrigation and subsurface drainage, ADAPT (Agricultural Drainage And Pe...
Contamination of groundwater by nitrate and pesticides has been documented by various state and fede...
The cumulative effects of management practices on nitrate-nitrogen (NO3-N) leaching and ground water...
In May 1988 sampling was initiated to evaluate water quality in relation to management practices at ...
Shallow water tables can contribute water for plant use; therefore, plant available water includes n...
A two-year field study was carried out in eastern Ontario to investigate the effects of water table ...
Better nitrogen (N) management practices can improve nitrogen uptake and possibly reduce nitrogen le...