Abstract
Tea plants are generally propagated through vegetative propagation leaf cutting and planting on mixed of topsoil and subsoil. To obtain the soil media from top soil began to feel difficult. In order to overcome these problems and preserve the environment, it is necessary to find alternative planting medium of tea seedling has to be explored to reduce the use of soil, one of which is the use of green tea factory waste compost <i>Tea Fluff</i> (TF). In addition, the fulfillment of nitrogen with use <i>Azotobacter </i>sp. This study aims to determine the effect of giving <i>Tea Fluff</i> compost and <i>Azotobacter </i>sp. on the growth of tea seedling and soil nutrients. This research was conducted from April 2020 to January 2021. The experiment will be carried out at Nursery in Research Institute for Tea and Chincona (RITC) Gambung, West Java. The planting material used was superior GMB 7 clones. The study used a factorial randomized block design (6 x 2) with 3 replications. Factor I is the combination of subsoil, (F1) 100% Topsoil + 0% TF; (70% Topsoil + 30% TF; 60% Topsoil + 40% TF; 50% Topsoil + 50% TF; 40% Topsoil + 60% TF; and 30% Topsoil + 70% TF, as a factor II is the Azotobcater sp dose, consisting of without <i>Azotobacter </i>sp. and 3 mL <i>Azotobacter </i>sp. The variables observed included the growth of tea seeds (18 WAP), analysis of soil chemistry and the microbial population of <i>Azotobacter</i>sp. The results showed that the combination of <i>Tea Fluff</i> compost with soil media had an effect on increasing the number of leaves, stem diameter, root length, root volume, percentage of live seedling, C-organic, N total, dan P avalaible. <i>Azotobacter </i>sp. affect the number of microbial populations. There is an interaction between the combination of <i>Tea Fluff </i>compost with <i>Azotobacter </i>sp. on population of <i>Azotobacter </i>sp. The highest percentage of live seeds in control treatment was 14.83% followed by treatment 70% Topsoil + 30%TF is 14.17%. The composition of the planting medium with <i>Tea Fluff</i> compost planting media affects microbial populations differently and the growth of clones GMB 7 on Andisols.
Highlights
Soil is one of the factors that is quite decisive for the growth of tea plants, so it is necessary to choose a suitable soil to meet the needs of tea plant growth
This study aims to obtain the formulation of Tea Fluff on composting and determine the effect of giving the right compost dose of Tea Fluff and Azotobacter sp. on the early growth of tea seeds
At the age of tea seeds after opening the lid (18 WAP), plant height in soil media with and without Azotobacter sp did not differ, which explains that in soil media, Azotobacter sp. doesn't do much. This is in line with the results of research [17] which stated that the application of Azotobacter sp. had no significant effect on the growth of seedling height, both oil palm and tea
Summary
Soil is one of the factors that is quite decisive for the growth of tea plants, so it is necessary to choose a suitable soil to meet the needs of tea plant growth. Soil that is suitable or meets the requirements for tea plants is fertile soil, contains lots of organic matter and has a soil pH between 4.55.6. Good soil for growing tea is located on the slopes of the volcano which is commonly called Andisol soil (young volcanic). Tea plants absorb nutrients from the soil continuously, so that the availability of nutrients in the soil decreases over time. If the soil is left untreated, it will become damaged or become critical soil. Damaged soil results in disrupted plant growth and production will decrease, and plants will die, it is necessary to carry out soil management
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