Water And Land Productivity of Lettuce (Lactuca sativa) Cultivation on Floating Pot in Wetland

Abstract

The objective of this study was to determine the values of water and land productivity of floating pot cultivation in wetland and to find out the effectivity of floating pots usage for agriculture in wetlands. The planting media used were mineral soil added with 0% of soil having permeability 36.07 cm/hour, 30% 38.33 cm/hour, 50% 51.23 cm/hour, 70% 69.60 cm/hour and 100% was not having permeability value. The water delivery used was legacy cloth which had 158.4 cm/hour of hydraulic conductivity value. The floating pots were placed in the experimental tank at greenhouse. Water level decrease in the experimental tank was total evapotranspiration for all plants in five planting media treatments. Water level reduction during the 41-days planting period was 40.56 mm with 0.081 m 3 of total water volume. The productivity values of land and water in the 0%, 30%, 50%, 70% and 100% of peat treatments were 1.29, 1.25, 1.06, 0.8 and 0 kg/m 2 dan 1.63, 1.63, 1.38, 1.04 dan 0 kg/m 3 , respectively.

A Model and Its Performance of Evapotranspirative Irrigation Tested to Grow Water Lettuces

“…The other parts of the water were stored in the soil layers 9.8 L (1.1%) and consumed by the plant as the crop evapotranspirations (ETc) 185.3 L (21.6%). This value was lower than that of Diansari et al (2019), where they used floating Irrigation water (Q) functioned mainly to return the water level to the set position when it decreased due to the water consumption by the plants or crop evapotranspiration (ETc). With no rainwater (R=0), this apparatus can be used to estimate the crop evapotranspiration (ETc) or functionalized as a lysimeter (Casanova et al, 2009;Domínguez-Niño et al, 2020) and furthermore to determine the crop coefficients.…”

“…Furthermore, the soil saturation degree was between 39-78% with the average value 58%. Thus, the surface soil remained unsaturated with water unsimilar to hydroponic and floating techniques (Diansari et al, 2019).…”