Objectives: This study developed a GIS-based approach for the spatial classification of land resources to assist planners to easily identify and increase areas for the cultivation of coconuts. Methods: The evaluation of land for its suitability application was a GIS-based multi-criteria evaluation involving guidelines on matching land quality diagnostics against crop requirements and assigning suitability rates for each land quality. Factors such as elevation, landform, soil drainage, slope, soil texture, and soil depth were used as parameters. Findings: Results showed that the existing coconut plantation is within the final suitability map developed. It revealed that around 420,000 hectares or 45.2% of the area considered in this study were found suitable locations for coconut production. Applications: Land suitability analysis for coconut cultivation using multi-criteria assessment in the GIS environment is a great tool for assessing and evaluating land in terms of its varying importance to decision-makers for sustainable agricultural production. Novelty: This study implemented spatial analysis in land evaluation that offered better land options in the study area.

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The application of magnetic technology to agricultural productions is considered new breakthroughs to the enhancement of food production. However, studies about its application on the hydroponic system of production on high valued crops are limited. Hence, the present study assessed the effect of magnetically-treated water on the growth and yield parameters of lettuce in hydroponic system. Magnetic device with different number of permanent magnets was used to magnetize irrigation water in the hydroponic system. Uniform and healthy seedlings are transplanted and arranged completely randomized design. Magnetically treated water enhanced the growth and yield parameters of lettuce such as weekly height, leaf area, fresh weight, and root length. The height, leaf area, fresh weight, and root length increased up to 44.30%, 199.93%, 50.72%, and 37.00%, respectively vs. the control. Results revealed that magnetic treatment for water in hydroponic system has potentials to increase the growth of lettuce and consequently its yield.