Abstract The time-zero correction is an essential step in the data pre-processing of ground penetrating radar (GPR) measurements to obtain accurate signal propagation time between transmitting and receiving antennas. For a novel custom GPR monitoring system with about 3000 antennas corresponding transceiver structures placed around soil sample (lysimeter), situ approach for required. In particu...

Preferential and lateral subsurface flow (LSF) may be responsible for the accelerated transport of water solutes in sloping agricultural landscapes; however, process is difficult to observe. One idea compare time series soil moisture observations field with those lysimeters, where vertically oriented. This study aims at identifying periods deviations contents pressure heads measured a weighing ...

Effective water and nitrogen (N) management strategies are critical for sustainable agricultural development. Lysimeter experiments with two deep percolation rates (low high percolation, i.e., LP HP: 3 mm d−1 5 d−1) five N application levels (N0~N4: 0, 60, 135, 210 285 kg ha−1) were conducted to investigate the effects of controlled drainage on productivity (WP) use efficiency (NUE) in water-sa...

this study was conducted to determine the potential evapotranspiration (pet) of maize, the crop coefficient (kc) under full water requirement as well as the cause of decrease in maize yield. it was determined that the seasonal pet of maize is about 486.6 mm. the kc under full water supply was found to be: 0.11, 0.35, 1.51 and 0.34 for initial, development, midseason and the late season stages r...