GROWTH AND PRODUCTION OF PAKCHOY (Brassica rapa L.) ON VARIOUS COMPOSITIONS OF COW URINE AND AB MIX WITH RAFT SYSTEM OF HYDROPONIC

Abstract

Pakcoy (Brassica rapa L.) is one of the vegetables that people like because it tastes good and has high nutrition content, so it has a high selling value and there is a need to increase production. Limited agricultural land is one of the obstacles in increasing the production of pakcoy, so the application of hydroponic technology can be an alternative. Nutrition requirements are a factor that needs to be considered in hydroponic cultivation. The nutrient commonly used in hydroponic cultivation is AB mix, but the price is relatively high and is still difficult to find on the market. This study aims to determine the growth and production of pakcoy in various compositions of cow urine and AB mix and to obtain alternative fertilizers that can replace AB mix. This research used a single factor Completely Randomized Design (CRD), namely the composition of cow urine and AB mix which consisted of 11 levels, namely, AB mix 5 ml, cow urine 2 ml + AB mix 4.5 ml, cow urine 4 ml + AB mix 4 ml, cow urine 6 ml + AB mix 3.5 ml, cow urine 8 ml + AB mix 3 ml, cow urine 10 ml + AB mix 2.5 ml, cow urine 12 ml + AB mix 2 ml , cow urine 14 ml + AB mix 1.5 ml, cow urine 16 ml + AB mix 1 ml, cow urine 18 ml + AB mix 0.5 ml, cow urine 20 ml. The results showed that the composition of cow urine and ab mix had an effect on all the variables observed. 100% cow urine cannot replace AB mix nutrition because cow urine gave the lowest results in all the treatments observed. The use of cow urine must be accompanied by AB mix nutrition to achieve optimal results.