Pengaruh Pupuk Mikro-Biostimulant Cair dan Bahan Organik terhadap Pertumbuhan dan Serapan N, P dan K Tanaman Caisim (Brassica juncea) pada Latosol (Oxic Dystrudept), Darmaga
Abadi, Feky Candra
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Latosol fertilty is generally low because of its organic content and lack of nutrient availability. One way to overcome its fertility was to used some fertilizer, both organic and inorganic fertilizers. Fertilizer can be applied to the soil and plants. Fertilizers by plants typically use a liquid fertilizer that is expected can overcome the deficiencies of nutrients and effectiveness of absorption. Sufficient nutrients and balance of plant are necessary. Plants can growth well when they have good support from condition and nature of soil so plants can used nutrients to its full potential. Nutrients needed by plants consist of macro elements (C, H, O, N, P, K, Ca, Mg, and S) and micro elements (Fe, Mn, Mo, B, Cu, Zn, and Cl). If all of the elements were not met, plants would growth abnormal. Micro nutrients needed in smaller amounts than fertilizer macro, but its presence is very important, for example in plant metabolic reactions, especially associated with the activity of the enzyme. Maximum growth and production can be ensured by maintain the amount of macro and micro nutrient status. One way to overcome micro-nutrient deficiencies are generally carried out through the leaves. The purpose of this research was to study the effect of Fertilizer Micro-Liquid Biostimulant and organic matter on growth and N, P and K uptake by Chinese Mustard (Brassica juncea) var. Tosakan in Latosol, Darmaga. The research arranged according to Completely Randomized trial using factorial design of two-factor repeated 5 times. The first factor was the Micro-Biostimulant Liquid Fertilizer (MBC) consisting of 4 levels, ie, MBC-0%, MBC-50%, MBC-100% and MBC-150%. The second factor was an organic matter consist of three doses, ie, without organic matter, 2.5 tons/ha of organic matter and 5.0 tons / ha of organic matter. The results showed that MBC treatment equivalent to 100% recommended doses provide the highest results for fresh weight and plant uptake of N, P and K. Aplication of MBC 100% significantly increased the fresh weight by 21% and nutrient uptake of N 27%, P 29% and K 20% compared with MBC 0%. The application of organic matter (cow manure) 5 ton/ha gave the highest results of the fresh weight and nutrient uptake of N, P and K. The treatment was significantly increased the fresh weight by 24% and nutrient uptake of N 23%, P 24% and K 25% compared with without organic matter. There was no interaction between MBC treatment and application of organic matter for all parameters.