Last modified: 2019-10-09
Abstract
One of the most popular vegetable in Indonesia was Green Sawi (Brassica juncea L.) or was called by Caisim. Caisim were contain many vitamins and mineral which were very good to consumed. Nowdays, the production of Caisim is slowdown because of the cultivation process especially for fertilizer use. The long-term of anorganic fertilizers use would give a bad effect to soil condition, and cause of the caisim production declined. To increase the cultivation of caisim, we can use hydroponic cultivation system, with rule out the soil condition. However, the hydroponic system have a high cost, because of the AB MIX nutrients were expensive. So this is necessary to find an altervative nutrient to cultivated it, such as liquid fertilizer based by Locally Micro Organism (LMO). Liquid fertilizer based LMO were absorbed by plant easily, low cost, easy to found, easy to made and gave a good influence to plant cultivation to increase crops production, especially for Hydroponic Caisim.
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The aims of this research were to test the effectiveness variation in nutrient on the growth of caisim hydroponic. The variation nutrients were use between AB MIX and Liquid fertilizer based LMO. These research was use complete randomized design with single factor trial design and 4 experiments. The experiments were: A = 5 ml of Lmo A + 5 ml of AB MIX; B = 5 ml of Lmo B + 5 ml of AB MIX; C = 5 ml of  Lmo A + 5 ml of Lmo B; and D = 10 ml of AB MIX. The experiment variable were plant height, number of leaves, and gross weight.
Table 1. The Average of the growth of Caisim (Brassica juncea L.) Hydroponic
Treatment
The Average of the growth of Caisim (Brassica juncea L.) Hydroponic after 4 weeks
Plant height (cm)
Number of leaves
Gross weight (g)
A (LMO A + AB MIX)
54,5
23,2
21,7
B (LMO B + AB MIX)
54,0
23,7
21,5
C (LMO A + LMO B)
67,8
27,8
30,3
D (AB MIX)
69,2
27,2
32,3
*LMO: Locally Micro Organism
AB MIX: the types of hydroponic nutrient
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According to the result of this research, could be conclute that using different nutrient, the growth of the hydroponic caisim (Brassica juncea L.) were increased. The highest average of plant height showed by using AB Mix nutrient about 69,2 cm. The most number of leaves showed by using combination between Lmo A and Lmo B, about 27,8 leaves. And the biggest wet gross showed by using AB Mix nutrient, about 32,3 g.