Concentration And Time of Administration Plant Growth Promoting Rhizobacteria (PGPR)On The Growth And Yield Of Onion Crops (Allium ascalonicum L.)

Abstract

The shallot plant (Allium ascalonicum L.) is one of the vegetable horticultural commodities which is a leading national commodity and receives intensive attention by the Directorate General of Horticulture. This commodity is also a source of income and employment opportunities which makes a high contribution to economic development. The increasing need for shallots is a potential market opportunity and can be a motivation for farmers to increase shallot production. Increasing productivity and production of shallots can be done through improving cultivation technology. This can be done through good cultivation techniques, one of which is by providing nutrition to support plant productivity in the form of Plant Growth Promoting Rhizobacteria (PGPR). Therefore, research has been carried out on the concentration and timing of Plant Growth Promoting Rhizobacteria (PGPR) on the growth and yield of shallot plants (Allium ascalonicum L). This research was carried out from June to August 2023 at Sumber Bening Village, Selupu Rejang District, Rejang Lebong Regency at an altitude of 1050 meters above sea level. The research results show thatGiving Plant Growth Promoting Rhizobacteria (PGPR) with a concentration of 30 ml/liter of water in the growth and yield phase of shallot plants provides the best performance in the variables of number of leaves, root weight, bulb diameter, wet weight, dry weight, number of bulbs and height of shallot plants. . For the observed variables, the average is still below the genetic potential of the description of existing shallot plant varieties, so in the future it is necessary to carry out further research on the concentration of Plant Growth Promoting Rhizobacteria (PGPR) on Bima variety shallot plants.