Application of Electrical Conductivity (EC) for Some Potato Varieties in the Aeroponically Seed Production with Root Zone Cooling and Evaporative Cooling in Tropical Lowlands

Abstract

Aeroponic potato seed production in the lowlands has been carried out by root zone cooling and evaporative cooling in order to reduce high temperature stress for the roots and tops of potato plants. However, the effect of nutrient solution EC on several varieties of potato seeds for an aeroponic system with a combination of root zone cooling and evaporative cooling for potato seed production in the lowlands has not been done. This study aims to obtain the response of potato varieties and the application of different ECs on aeroponic seed production with root zone and evaporative cooling in tropical lowlands. The factors analyzed : 1. Variety (V): V1 (MZ), V2 (Granola K), V3 (Granola L), and 2. Nutrient concentration (EC): EC1 (1.5 mS/cm for Week 1- 4, 2 mS/cm for Week 5 until harvest), and EC2 (1.5 mS/cm for Week 1-4, and 3 mS/cm for Week 5 until harvest), while the design used was RAK with 3 replications. The results showed that the Granola K and EC2 varieties are more efficient for potato seed production in the lowlands with the application of root zone and evaporative cooling. This variety produced the highest number of tubers up to 30 tubers/plant. Similarly, the Granola L and MZ varieties showed similar results with a total number of tubers above 10 tubers/plant. Keywords: Cultivation, Greenhouse, Hydroponics, Nutrition, Tubers

Best Morpho-Physiological Parameters to Characterize Seed-Potato Plant Growth under Aeroponics: A Pilot Study

“…They found an average leaf number of 185.7 leaves per plant. On the other hand, Sumarni et al [44] conducted a study in Purwokerto, Indonesia to determine the effect of electrical conductivity (EC) on the From the dendrogram, it is possible to verify the formation of three clusters when the days after transplantation (DAT) are prolonged, the first one including the first two weeks and the other two groups consisting of three weeks. If the parameters are observed, it is possible to deduce them in a more restricted group, since the objective is to be able to better explain the variations obtained in the characterization over the days after planting (Figure 12).…”

“…They found an average leaf number of 185.7 leaves per plant. On the other hand, Sumarni et al [44] conducted a study in Purwokerto, Indonesia to determine the effect of electrical conductivity (EC) on the growth and yield of potato seeds grown in aeroponics with root-zone cooling. They reported a maximum plant height of 41.3 cm and 84.8 leaves with an EC of 1.0 mS cm −1 (for the first three weeks) and 2.0 mS cm −1 (for the rest of the study) under greenhouse conditions.…”

Sistem Otomatis Pembuatan Nutrisi Ideal untuk Tanaman Pakcoy Menggunakan kendali Logika Fuzzy

“…Selanjutnya penelitian yang dilakukan oleh Sumarni [6]. Kelebihan dari sistem ini adalah sudah mengatur kadar nutrisi.…”

Evaluation of the Coolnet Placement Distance to Direct Evaporative Cooling to Increase Potato Seed Production in Aeroponic Systems with Root Zone Cooling in the Lowlands

“…The results of previous research using the direct evaporative cooling method (cold water spray) and root zone cooling in the aeroponic system gave an average number of tubers of 9.4 plants and an average tuber weight of 6.3 grams of tuber-1 (Sumarni et al, 2021a). However, these results were still obtained in 45-50% of the plants burned on the leaves and stem aged 60 days after planting (DAP).…”

“…Unoptimal conditions for potato plants in the lowlands can be improved through limited climate engineering in the root zone of potato plants, namely root zone cooling (Sumarni et al, 2013) and evaporative cooling so that potato plants in the lowlands produce tubers and can survive more than 60 days after planting (DAP) (Sumarni et al, 2019;2020;2021a;. Several applications of root zone cooling have succeeded in supporting the growth and development of vegetable production in the summer well and in the roots and shoots there has been an increase in nutrient uptake (Al-Rawahy et al, 2018).…”