The Effect of Vermicompost and Watering Interval on Vitamin C Content and Calcium Uptake of Pakcoy (Brassica chinensis L.) Var. Nauli F1

• Main Author: RESTU SEFTYANI (nim : 11414006), SOFYA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/31024
• Institution: Institut Teknologi Bandung

<p align="justify">Vitamin and mineral needs for the community can be met through consumption of vegetables. Pakcoy (Brassica chinensis L.) is one of the vegetables that has a high nutritional content. At 100 grams pakcoy contains 1.43 grams of protein, 0.143 grams of fat, 2.14 grams of carbohydrate, 1 gram of fiber, 45 mg of vitamin C / 100 grams, 105 mg of calcium / 100 grams, 0.86 mg of iron / 100 grams, and 95 grams of water. Vitamin C and calcium in pakcoy plants are quite high. Vitamin C is useful as an antioxidant and can overcome free radicals that can damage plant tissues. While calcium acts as a constituent of the cell walls and permeability of cell membranes. One way to increase the content of vitamin C and calcium in plants is by providing good fertilizer and watering. This study aims to determine the effect of adding vermicompost and water delivery interval through a drip irrigation system on the content of vitamin C and calcium absorption in pakcoy plants. The treatment used in this study consisted of 2 factors and 3 replications. The first factor is the media treatment with 5 levels, namely M0 (soil 1: vermicompost 0), M1 (soil 3: vermicompost 1), M2 (soil 1: vermicompost 1), M3 (soil 1: vermicompost 3), and M4 (soil 0 : vermikompos 1). The second factor is the watering interval treatment which consists of 3 levels, namely V1 (every day), V2 (once every two days), and V3 (once every three days). The study begins with the determination of plant water requirements through transpiration testing, evapotranspiration and percolation. Then seeding of pakcoy plants was carried out for 15 HSS and planting for 40 HST. Factors observed during the screen house include light intensity, temperature and humidity, as well as soil temperature and pH. Testing of vitamin C in Balitsa was done by iodometry technique while calcium testing used the Atomic Absorption Spectrophotometer (AAS) technique. The results showed that the highest treatment of M2V3 and M4V2 contained in pakcoy plants was 63.38 mg / 100 grams. The M2V1 treatment showed the highest calcium absorption as much as 95 mg / plant. The addition of vermicompost and optimum water delivery interval that can increase the content of vitamin C is M2V3 while for calcium absorption is M2V1.<p align="justify">