Publication Date:
2018-12-08
Description:
Potassium is an essential macro nutrient for plants but most of them are not available because it is fixed in the soil in primary or secondary silicate minerals such as K-feldspar or 2:1 type clay form, so trigger the excessive use of potassium fertilizer that can damage the environment. Potassium solubilizing rhizo-bacteria (KSRB) which is a microbial fertilizer can overcome this problem by changing the non available into available soilpotassium. This is a promising strategy for improving of plant absorption of potassium and reducing the use of chemical fertilizers. The objective of this study was to evaluated the ability of fifteen KSRB isolates that isolated from maize rhizosphere to dissolve potassium. Potassium dissolution activity by KSRB isolate was observed using Khandeparkar’s selection ratio (modified) by measuring the diameter of the clear zone around the colony compared with the colony diameter on Aleksandrov solid medium (K-feldspar powder as sole potassium source) ...
Print ISSN:
1755-1307
Electronic ISSN:
1755-1315
Topics:
Geography
,
Geosciences
,
Physics