Study on mixing organic media to make nursery of hybrid Acacia seedlings BV10, BV33 produced by tissue culture method

Abstract

In the composition of the nursery, media and fertilizer play an extremely important role. Types of media such as: Yellow sand, coir, sawdust ... treated, when mixed with small soil will increase the porosity, helping the soil not be compressed after watering or for a long time. . Some types of media such as coconut fiber, sawdust ... have the ability to retain water very effectively, helping the seedlings grown in the nursery to be more alive. In this study, materials such as red soil, decomposed animal manure, sawdust, coconut fiber, lime powder, probiotics are used to make nursery medium of hybrid Acacia variety BV10 and BV33. tissue culture method, the research results show that: The ratio of mixing different organic matters increases the plant height and makes sense on the type of soil studied, specifically: Plant height is highest in formula 5 ( 18.86 cm) at 60 days after planting and 31.20 cm at 90 days after planting. Diameter of root collar: reaches the highest in formula 5 (1.42 cm) at 60 days after planting and 2.88 cm at 90 days after planting. Number of roots and root length: highest at formulas 4 and 5 (4 roots) and 1.37 cm at 90 days after planting. The percentage of seedlings that reach seedling standards of seedlings is relatively high at over 80% in the organic blended formulas. Highest in formula 5 (90.5%) and lowest formula in formula 2 (80.5%).