Abstract:
An interactive software application for irrigation scheduling is described.
The program was developed using the advanced "macro" instructions of the popular "Lotus 1 2 3" spreadsheet, with the aim of supplying farmers with a very simple and flexible tool to manage irrigation.
The program is designed for a processing tomato crop grown under the climatic conditions of Northern Italy, but it can be easily modified for use with other crops in different climates.
Input data are limited to the length of the crop cycle and its date of emergence and to an estimate of the soil characteristics and initial water content.
Daily minimum and maximum air temperatures, rainfall and irrigation depths are also required.
The program develops a water balance and supplies information on the timing and amounts of irrigation.
The program also produce a graphical output.
An example is reported.
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