Abstract
Marginal soils have problems of low availability of nutrients, especially phosphorus. Phosphate solubilizing microbes can produce organic acid that dissolve P in the soil. Futhermore, the PSM also produce extracellular enzymes asa phosphatase that catalyze mineralization of organic P become inorganic P. Phosphate solubilizing bacteria (Pseudomonas mallei and Pseudomonas cepacea) and phosphate solubilizing fungi (Penicillium sp. and Aspergillus sp) is selected based on the ability of dissolving P and the production of growth regulators. Research at this stage aims to determine the biological fertilizer application techniques (PSB and PSF) as well as different types of P fertilizers to improve soil P available, growth and yield of maize. Field experiment on Ultisol Jatinangor implemented using a randomized block design (RBD) to test how applications PSM plus (giving 1, 2 and 3 applications) as well as the type of fertilizer P (SP-36 and rock phosphate). The results showed that the application of PSM can improve soil P-available growth and yield of maize. Application of PSM biological fertilizer could reduce the need for fertilizer P by 50%. PSM application once the application (early planting) with SP-36 dose 50% can increase content of soil P (P-available), and yield of maize on Ultisols.Keywords : maize, phosphate solubilizing microbes, Ultisols
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Claims 4
Claim · model-written summary
PSM application improved soil P availability, maize growth and maize yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the application of PSM can improve soil P-available growth and yield of maize.”
Claim · model-written summary
PSM biological fertilizer reduced the need for P fertilizer by 50%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of PSM biological fertilizer could reduce the need for fertilizer P by 50%.”
e1“soil P-available growth and yield of maize.”
Claim · model-written summary
One early PSM application with a 50% SP-36 dose increased soil available P.
- Treatment
- PSM application once the application (early planting) with SP-36 dose 50%e0
- Outcome
- content of soil P (P-available)e0
- Direction
- increasee0
- Setting
- Ultisolse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PSM application once the application (early planting) with SP-36 dose 50% can increase content of soil P (P-available), and yield of maize on Ultisols.”
Claim · model-written summary
One early PSM application with a 50% SP-36 dose increased maize yield.
- Treatment
- PSM application once the application (early planting) with SP-36 dose 50%e0
- Outcome
- yield of maizee0
- Direction
- increasee0
- Setting
- Ultisolse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PSM application once the application (early planting) with SP-36 dose 50% can increase content of soil P (P-available), and yield of maize on Ultisols.”
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