The effect of nitrogen-fixing bacteria in the plant Rhizosphere on the quality of forage nutrient

Ni Made Witariadi * and Ni Nyoman Candraasih Kusumawati

Bachelor of Animal Husbandry Study Program, Faculty of Animal Husbandry, Udayana University, Badung, Bali, Indonesia
 
Research Article
World Journal of Biology Pharmacy and Health Sciences, 2024, 20(03), 157–161.
Article DOI: 10.30574/wjbphs.2024.20.3.0993
Publication history: 
Received on 29 October 2024; revised on 04 December 2024; accepted on 06 December 2024
 
Abstract: 
The presence of soil microbes around plant roots (Rhizosphere) plays a role in providing nutrients needed by plants. Research to determine the effect of nitrogen-fixing bacteria population in the plant Rhizosphere on the quality of forage nutrient. Sampling in the plant Rhizosphere: NR = Non Rhizosphere, RG = Rhizosphere Gliricidia sepium, RL= Rhizosphere Leucaena leucocephala, and RI = Rhizosphere Indigofera zollingeriana, and each treatment was repeated 7 times. Observed variables include: soil nutrient content, population microbes, nitrogen-fixing bacteria, and quality of forage nutrient. The results showed that the C-organic content of the soil in the Rhizosphere Indigofera zollingeriana (RI) treatment was 4.16% (very high) and total Nitrogen was 0.34% (moderate). The highest total microbes and nitrogen-fixing bacteria populations of 6.0 x 106 and 2.5 x 105 Cfu/g soil were found in the Rhizosphere Gliricidia sepium (RG) treatment, and the lowest results were 2.6 x 105 and 2.0 x 105 Cfu/g soil in the Non Rhizosphere (NR). The quality of forage nutrient in the Rhizosphere Gliricidia sepium (RG) treatment, produced the highest crude protein (28.56%) and the lowest crude fiber (14.41%). It can be concluded that the population nitrogen-fixing bacteria in the Rhizosphere ​​Gliricidia sepium (RG) is able to improve the quality of forage nutrient produced.
 
Keywords: 
Legumes; Nitrogen-Fixing Bacteria; Forage Nutrient Quality; Rhizosphere; Soil Nutrients
 
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