Abstract
This research was implemented in the greenhouse at the Experimental Garden of the Faculty of Agriculture Universitas Islam Sumatera Utara, Sub-distric Gedung Johor, Medan Johor District, Medan City, North Sumatra Province. This research was implemented from November to December 2020. This study aims to determine the effect of concentration of AB Mix and ZPT solutions on the growth and production of mustard greens. This study used a completely randomized design (CRD) with two treatment factors the concentration of AB Mix solution and ZPT application. The first factors, the concentration of AB Mix solution consisting of 3 levels: K0 = control, K1 = 550 ppm, K2 = 1100 ppm. The second factor was giving ZPT the earliest in 3 levels: Z0 = control, Z1 = 0.5 ml, Z2 = 1 ml. The parameters observed were plant height, number of leaves, leaf length, leaf width, wet weight and dry weight. Its is know from the results concentrations of AB Mix solution significantly affected plant height, number of leaves, leaf length, leaf width, wet weight and dry weight. Giving of ZPT had a significant effect on leaf width but had no significant effect on plant height, number of leaves, leaf length, wet weight and dry weight. The interaction of AB Mix solution concentration and ZPT giving had no significant effect on the growth and production of mustard greens.
Highlights
Vegetables are plant commodities that are able to contribute to national development in order to welfare the community, such as fulfilling community nutrition as a complement to the four healthy five perfect foods, very potential and prospective to be cultivated because cultivation methods tend to be easy and simple
Giving ZPT had a significant effect on leaf width, but had no significant effect on plant height, number of leaves, leaf length, wet weight and dry weight
The best concentration of AB Mix solution was in the K2 (1100 ppm) treatment with a plant height of 7.18 cm, leaf number 9.39, leaf width 10.87 cm, leaf length 12.61 cm, wet weight 159.22 g and dry weight 2.33 g
Summary
Vegetables are plant commodities that are able to contribute to national development in order to welfare the community, such as fulfilling community nutrition as a complement to the four healthy five perfect foods, very potential and prospective to be cultivated because cultivation methods tend to be easy and simple. Green mustard plants are known to have high economic value because this vegetable is one of Indonesia's main export commodities. Until now, mustard plants production has not been able to meet the needs of domestic and foreign markets. This is because the average national mustard plants production is still very low. The low production of mustard greens in Indonesia can be caused by several reasons, such as the application of cultivation technology that is still simple, or because the land for growing crops is decreasing. These development have shifted a lot of agricultural land, especially in urban areas. Hydroponic plants can be done on a small scale at home as a hobby or on a large scale with commercial purposes [4]
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