Evaluation of the thermal integral as an environmental factor for thecultivation of hydroponic lettuce in the floating rootsystem in the town of Lima

Abstract

The hydroponic system is a closed and efficient system
from the economic, technical and environmental point of view, considerably reducing stress, fertility and soil depletion, improving food quality and therefore the quality of life of Peruvians. The study was conducted at
the Experimental Center (INVERGEP SAC), located
in the Boza community in Huaral, Lima, Peru. The objective was to produce lettuce (Lactuca sativa) using the hydroponic
system, applying techniques of the NFT model, and to promote new
alternatives to generate intermediate technology production chains
such as hydroponic crops for rural and urban communities. Using a
thermohygrometer, the phenological process was carried out in the
hatching stage and in the harvesting stage, obtaining the thermal
summation. Data were obtained from the daily register in reference
values of the experimental module to evaluate in the hatching cover
and then in the harvest phase: first in the seedling stage GDD = 11.
2º C; GDA = 71. 8º C, during the vegetative period; GDD = 11.2°C;
GDA = 289.76 C . The research work was carried out during one
month and a half; from September 1 to October 6, 2023. The daily
accumulated temperature index, during the whole vegetative period,
shows that the sector of the northern Lima locality is suitable for
the installation of hydroponic cultivation because it has minimum
temperatures from 11°C to 19°C.