Plastic mulch and drip irrigation are commonly used in high intensity vegetable production regions such as Florida. Drip irrigation can be much more efficient than sprinkler irrigation since only the root zone of the cropped area is irrigated. However, improper irrigation management can lead to wasted water and leaching of soluble chemicals such as nitrate. In this project, several irrigation t...

Abstract Understanding transport and fate processes in the subsurface is of fundamental importance to identify leaching potentials herbicides or other compounds groundwater resources. HYDRUS‐1D was used simulate water flow solute arable land lysimeters. Simulations were compared observed drainage rates stable isotopes (δ 18 O) drainage. Four different model setups investigated statistically eva...

Proper N fertilizer and irrigation management can reduce nitrate leaching while maintaining crop yield, which is critical to enhance the sustainability of vegetable production on soils with poor water and nutrient-holding capacities. This study evaluated different methods to measure nitrate leaching in mulched drip-irrigated zucchini, pepper, and tomato production systems. Fertigation rates wer...

This study estimated the nitrate and potassium concentration in soil solution of drainage lysimeter using mathematical models developed by Vogeler et al. (1996) Muñoz-Carpena (2005) computational model Hydrus-2D, while comparing simulated observed data statistical parameters. The cultivar used for was ‘Prata Gorutuba’. experimental plots were six lysimeters drainage. Fertigation performed weekl...

This may cause an unrealistic soil moisture regime and may effect crop growth. A method was developed to obtain large undisturbed soil cores To more closely represent an uninterrupted soil coland instrument those cores to collect vadose zone leachate data under agricultural field conditions. Twenty undisturbed soil core lysimeters umn at the point of leachate collection, a vacuum extracwere con...

Precise, accurate knowledge of percolation is key to reliable determination soil water balance and a crop’s water-use efficiency. This work evaluated an approach estimate the amount percolated in root zone using content (SWC) data measured at different time intervals. The was based on difference within below effective banana plants A drainage lysimeter used compare estimated data. then orchard ...