295 Controlling Crop Growth Media Moisture with Sensors

New calibration technique for microwave moisture sensors

A new calibration technique was developed for Implementation with microwave moisture sensors. The calibration permittivity function used for this purpose allows computation of moisture content in granular materials with significant differences In shape, dimensions, and composition, independent of bulk density and with temperature compensation. A three dimensional (3-13) representation is used t...

Controlling crystal growth with modifiers

Modifying crystal growth processes using additives is a well established approach to solving problems in many processes. Nature also makes extensive use of crystalline inorganic structures modified by soluble and insoluble organic materials. This Highlight discusses some of the recent and interesting developments in this area, with an emphasis on the control of crystal growth rates, covering bo...

Impact of Soil Moisture on Crop Yields over Brazilian Semiarid

The objective of this work was to investigate the relationship between soil water content and rainfall with rice, beans, cassava and corn yields in the semiarid region of Northeast Brazil. Precipitation and modeled soil water content were compared to yields recorded at the county levels in this region. The results were also integrated over the area of the nine States that lie within the officia...

Crop Growth Simulation Models

1. Introduction Systems approach has been used by engineers since the 1950's for the study of complex and dynamic processes but their use by scientists working in biological fields is relatively recent. A system is defined as any well delineated part of reality which may contain a number of interrelated elements forming the systems structure. These functioning components interact in various way...

Controlling Robots Using Vision and Bio Sensors