Pengaruh Tingkat EC (Electrical Conductivity) terhadap Pertumbuhan Tanaman Sawi (Brassica juncea L.) pada Sistem Instalasi Aeroponik Vertikal

Abstract

Kebutuhan akan tanaman sawi semakin meningkat, sehingga diperlukan teknologi yang dapat memaksimalkan hasil serta memperbaiki teknik budidaya, salah satunya teknik budidaya aeroponik vertikal. Penelitian ini bertujuan untuk mengetahui respon pertumbuhan tanaman sawi yang terbaik terhadap pengaruh tingkat EC pada larutan nutrisi. Penelitian ini dilaksanakan di daerah Bekasi Timur dengan ketinggian 25 m di atas permukaan laut, dimulai pada bulan April 2014 sampai Juli 2014. Rancangan yang digunakan adalah Rancangan Acak Kelompok dengan 4 perlakuan yaitu A (Tingkat EC 1 mS cm-1), B (Tingkat EC 1,5 mS cm-1), C (Tingkat EC 2 mS cm-1), dan D (Tingkat EC 2,5 mS cm-1) dengan diulang sebanyak 4 kali. Hasil penelitian menunjukkan bahwa tingkat EC berpengaruh terhadap tinggi tanaman sawi pada umur 14 dan 18 hst, luas daun pada umur 26 dan 30 hst, panjang akar pada umur 30 hst, dan bobot basah pada umur 30 hst. Tingkat EC 2,5 mS cm-1 memberikan pengaruh baik terhadap bobot basah. The increasing need of mustard require technologies that can maximize result and improve cultivation, one of them is aeroponic vertical cultivation technique. This research aimed to know the best response of mustard growth on influence of nutrient EC level. This research was carried out in Bekasi Timur with altitude of 25 m above sea level, form April 2014 to July 2014. The design used was Randomized Block Design with 4 treatments that A (EC level 1 mS cm-1), B (EC level 1,5 mS cm-1), C (EC level 2 mS cm-1), and D (EC level 2,5 mS cm-1) with 4 replications. The results showed that EC level affected on plant height at 14 and 18 dap, leaf area at 26 and 30 dap, root length at 30 dap, and wet weight at the age of 30 dap. The EC level 2,5 mS cm-1had better effect on wet weight.

Growth and yield of pakcoy (Brassica rapa L.) due to different concentration of AB Mix nutrient and foliar fertilizer in the floating hydroponic system

“…If the nutrients given are above the threshold, then the leaves of the plant will turn brown, reinforced by [24] which states that if plants are given too much nutrients can cause poisoning and reduced vegetative development for plants. [25] and [26] added that plants will be less able to absorb nutrients properly if the dose or concentration is too high, so this will cause plant growth and development is not optimal and can cause death in plants. In addition to nutritional factors, [27] states that the growth of hydroponic plants is also influenced by external factors such as light intensity, temperature, CO2 and humidity received by plants.…”

The Effect of Seaweed (Sargassum sp.) and Plant Extract Combinations on the Growth of Mustard Plant (Brassica juncea L.) Grown in Hydroponic Wick System

“…According to Surtinah (2016), respiration produces the energy needed by plants so that it can be used for assimilation in water absorption, ion absorption and nutrient absorption so that oxygen is very important for the growth and function of plant cells; without sufficient oxygen for respiration, water and ion absorption stop and killed the plant's roots. Lack of oxygen caused by disturbances in the roots can cause imperfect plant growth and reduce crop yields in plants (Pratiwi et al, 2015).…”

Respon Pertumbuhan dan Hasil Bayam Merah (Alternanthera amoena Voss.) Akibat Populasi dan Konsentrasi AB Mix pada Hidroponik Rakit Apung

“…Menurut. Pratiwi et al (2015) menyatakan bahwa serapan jumlah air yang terlalu sedikir menyebabkan kekeringan dan stomata daun tertutup akibatnya turgor sel menurun hingga mengurangi kadar CO2 yang berdifusi ke daun dan laju respirasi menurun Jumlah air yang diterima oleh tanaman dapat mempengaruhi luas daun. Air memiliki dua fungsi untuk tanaman.…”