Articles by Author: Nebo Jovanovic

Search results for Nebo Jovanovic

We found 9 results for you
  1. Validation and downscaling of Advanced Scatterometer (ASCAT) soil moisture using ground measurements in the Western Cape, South Africa

    Validation and downscaling of Advanced Scatterometer (ASCAT) soil moisture using ground measurements in the Western Cape, South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Satellite-based remote sensing of soil water content (SWC) is a promising technology for hydrological applications to overcome large spatiotemporal variabilities of SWC. This study investigated the performance of the Advanced Scatterometer (ASCAT) soil moisture product on METOP satellite (∼12.5 km...
  2. Measurement of radiant interception of crop canopies with the LAI-2000 plant canopy analyzer

    Measurement of radiant interception of crop canopies with the LAI-2000 plant canopy analyzer

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The performance of the plant canopy analyzer (PCA), model LAI-2000 (LI-COR, Lincoln, NE, USA), has been tested in two separate field trials for 18 annual crop and pasture species. The objective was to recommend appropriate techniques for reliable estimates of...
  3. Calibration and validation of the SWB model for sunflower (<em>Helianthus annuus</em> L.)

    Calibration and validation of the SWB model for sunflower (<em>Helianthus annuus</em> L.)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The Soil Water Balance (SWB) generic crop growth and irrigation scheduling model was used to simulate the crop growth and soil water balance of sunflower (Helianthus annuus L. c v. CAR 1199 and SO 306) grown at Rietrivier. The objectives...
  4. Calibration and validation of the SWB irrigation scheduling model for soybean [<em>Glycine max.</em> (L.) Merr., indeterminate cv. Wayne]

    Calibration and validation of the SWB irrigation scheduling model for soybean [<em>Glycine max.</em> (L.) Merr., indeterminate cv. Wayne]

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Soil Water Balance (SWB) is a mechanistic, irrigation scheduling, generic crop model including a database of crop specific growth parameters. The objective of this study was to calibrate and validate this model for soybean [Glycine max. (L.) Merr., indeterminate cv...
  5. User-friendly model for chemical equilibrium of CaSO<sub>4</sub> solutions

    User-friendly model for chemical equilibrium of CaSO<sub>4</sub> solutions

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    User-friendly Windows software (ChemEq) was developed for calculation of solution chemical equilibrium and precipitation- dissolution of lime and gypsum. ChemEq calculates ionic concentrations and activities, pH, solid phase gypsum and lime, sodium adsorption ratio and electrical conductivity from initial concentrations...
  6. Water balance simulation of a peach orchard using the SWB model

    Water balance simulation of a peach orchard using the SWB model

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Soil Water Balance (SWB) is a user-friendly irrigation scheduling model developed to estimate water use for a wide range of crops. The FAO crop factor option within this model allows one to determine daily irrigation requirements from daily weather data...
  7. CLIMGEN-UP: A user-friendly weather data generator

    CLIMGEN-UP: A user-friendly weather data generator

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    User-friendly Windows software, CLIMGEN-UP, was developed based on the CLIMGEN weather data generator. CLIMGEN-UP calculates and stores monthly statistical parameters, based on historic data of daily rainfall, minimum and maximum temperature. It can then generate and store long-series of daily...
  8. Modelling the contribution of root accessible water tables towards crop water requirements

    Modelling the contribution of root accessible water tables towards crop water requirements

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Proper utilization of shallow water tables could substantially reduce irrigation water requirements in large agricultural areas. The objective was to develop and test a computer model for predicting the contribution of shallow water tables to root water uptake. The model...
  9. Validation of the soil evaporation subroutine of the SWB-2D model in a hedgerow peach orchard

    Validation of the soil evaporation subroutine of the SWB-2D model in a hedgerow peach orchard

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The SWB (Soil Water Balance) model, previously developed to estimate water use by agronomic crops, has been adapted to describe solar radiation interception and soil evaporation in hedgerow orchards. The distribution of solar radiation (Rs) at the soil surface is...