Agriculture Reference
In-Depth Information
TABLE 3:
Characteristics of the three biofertilizers used and tested.
Product ID
BN
BG
BS
Product name
Bio-N®
BioGroe®
BioSpark®
Active ingredient
Azospirillum
lipoferum, A. brasilense
Plant growth-promot-
ing rhizobacteria (not
defined)
Trichoderma
parceramosum, T.
pseudokoningii
, and
UV-irradiated strain of
T. harzianum
Active organism
Bacteria
Bacteria
Fungus
Product type
Dry powder in200-g
pack
Dry powder in100-g
pack
Dry powder in250-g
pack
Carrier medium
Sterile charcoal/soil
mixture
Sterile charcoal/soil
mixture
Dry organic medium
(rice hull)
Producer declared
cell number
108 cfu g
−1
-
109 cfu g
−1
Shelf life
3 months
6 months
24 months
Product amount
recommended and
used (for 1 ha)
1000 g 40 kg
−1
seed
400 g 40 kg
−1
seed
200 g 40 kg
−1
seed
2011 biofertilizer
costs needed for 40
kg seed
US$6.82
US$3.64
US$6.36
Elemental contents *
N %
0.13
0.34
1.27
P %
0.091
0.063
0.687
K %
0.22
0.24
0.72
Supplier
BioTech UPLB
BioTech UPLB
BioSpark Corp.
* Source: Analytical Service Laboratory, GQNPC, IRRI.
7.2.3 CROP ESTABLISHMENT AND MANAGEMENT
In all experiments, rice variety PSB Rc18, a modern-type variety with
120 days duration, was used. Seed for the BN and Control treatments was
soaked for 24 h, incubated for another 24 h, and sown using the modified
dapog (mat) method. BN was prepared in a slurry solution and applied by
