Most agronomic models estimate canopy light interception using the Beer-Lambert law. This method only accounts for leaf area index (LAI) and leaf angle distribution (LAD) without considering the crop’s structural heterogeneity in space, or soil-leaf or leaf-leaf radiative scattering. These factors have been extensively studied during the past ten years e.g; (Luquet et al. 1998; Nouvellon et al....

One of the main insights achieved in the early days of agricultural science is that each environment has a specific balance of resources, which is available to the crop. This balance determines crop production, the effect of resource addition and the effect of agronomic operations. However, attempts to quantify this balance are scarce. It is normally taken into account indirectly by a general d...

The paper examines the structure and nature of cropping pattern, crop diversification, crop concentration, productivity level and inter-districts disparity in the state of Odisha based on the secondary data collected for the period 1980 – 2005 from different published sources. The study has used Herfindahl index, location quotient, Gini coefficient and panel data regression for analysis. The st...

The objective of this work was to evaluate the sensitivity of three different satellite signals (interferometric coherence (γ), backscattering coefficient (σ0) and NDVI) to corn biophysical parameters (leaf area index, height, biomass and water content) throughout its entire vegetation cycle. All of the satellite and in situ data were collected during the Multi-spectral Crop Monitoring (MCM’10)...

Lack of basic knowledge about spatial and treatment varying crop response to irrigation hinders irrigation management and economic analysis for site-specific agriculture. One model that has been postulated for relating crop-specific economic quantities to irrigation is a quadratic response curve of yield as a function of irrigation. Although this model has far reaching economic interpretations ...

The paper presents the results of studies on selecting a solid sorption material for absorbing liquid crop protection agents which permeate samples of protective clothing fabrics. The sorption materials were investigated and selected with an assumption that they should have a high recovery coefficient for biologically active substances, used as active ingredients in crop protection agents, at a...

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...