Effect of consentration and time of chitosan administration on Pachira breeding (Pachira aquatica)
Endang Yuniastuti (a*), Angelica Christina Nugroho (b), Djati Waluyo Djoar (a), Imanovta Ichti Santoso Putri (b)

a) Department of Agrotechnology, Faculty of Agriculture, Sebelas Maret University Jalan Ir Sutami 36A, Surakarta 57126, Indonesia
*yuniastutisibuea[at]staff.uns.ac.id
b) Undergraduated School, Department of Agrotechnology, Faculty of Agriculture,
Sebelas Maret University Jalan Ir Sutami 36A, Surakarta 57126, Indonesia

Abstract

Pachira is an ornamental plant that can be used as biodiesel, because of the high-fat content in the seeds. Biodiesel is an alternative fuel that can be used to replace fossil fuels. By using biodiesel as a fuel, it will support a sustainable agricultural system that can produce energy for other sectors outside of agriculture. Pachira plant breeding has not been widely carried out in Indonesia, so the potential use of pachira seeds as biodiesel has not been highlighted. This research was conducted to determine the concentration and timing of chitosan administration for pachira breeding. The study was conducted in Blora Regency using a completely randomized block experimental design (RAKL) with two treatment fac-tors, namely concentration and time of administration. The concentration was divided into three levels, namely 1%, 2%, and 4% concentration, the time of administration was divided into three levels, namely in the morning, afternoon, morning, and afternoon. The administration of chitosan was carried out every week as much as 20 ml according to the treatment. Maintenance carried out is to pour 50 ml of water every day on all research samples. The results showed that treatment with a concentration of 4% and watering in the afternoon could stimulate plant height growth at the beginning of the seedling phase, having the most leaves, producing greener leaf colors and having wider roots.

Keywords: Pachira- Chitosan- Breeding

Topic: Agricultural sciences and engineering