To fertilize or not to fertilize your soybean with N? Is ...€¦ · 40 years of experience in...
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To fertilize or not to fertilize your soybean with N? Is there a limit for BNF? Guido Ramirez Caceres
Transcript of To fertilize or not to fertilize your soybean with N? Is ...€¦ · 40 years of experience in...
To fertilize or not to fertilize your soybean with N? Is there
a limit for BNF?
Guido Ramirez Caceres
• Rizobacter overview
• N nutrition in Soybean: BNF and mineral N
• Commercial product launch in Hungary in 2019
• Summary
Presentation content
Rizobacter overview
40 years of experience in agricultural microbiology.
Pioneers in the production of liquid inoculants (1989)
Invests 50% of profits in R&D as a business strategy.
Has one of the world's most modern plants for the production of inoculants.
Guaranteed High Quality Standards (ISO, OHSAS).
9 subsidiaries, commercial operations in more than 25 countries.
100% Argentinian
430 employees
USD 111 M revenue in 2016-2017
Rizobacter overview
HQ & Subsidiaries
Dealers
Next
Rizobacter in the World
Microbiological Products
Inoculants
PGPM’s & Bio-Fertilizers
Bio-Control
Non-BiologicalProducts
Adjuvants
Seedcare Products
Insecticides forstored grains
Baits for pestcontrol
Crop Nutrition
Micro-granular Fertilizer
Services
Professional SeedTreatment (NTR)
Product Portfolio
• Rizobacter overview
• N nutrition in Soybean: BNF and mineral N
• Commercial product launch in Hungary in 2019
• Conclusions
Presentation content
90
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0 N P K Ca Mg S
Kg
of
nu
trie
nt
tn-1
of
grai
n
Soybean nutrient demand
Soybean nutrient demand
Salvagiotti et al, 2008
Soil: NO3- and NH4
+
(available+ fertilizer+ OM mineralization)
Atmosphere: N2
(BNF) 25-75% of total N
N
Soybean nutrient demand
Soybean nutrient demand
N fertilizer
• Energetically cheap for plants
• Expensive (economically and environmentally) for humans
Häber-Bosch process
( 300 ATM – 500 °C )
1 Tn of NH3 6 barrels of oil
1 barrel of oil U$D 50
1 Tn of NH3 U$D 300
Soybean nutrient demand
Biological Nitrogen Fixation
• Energetically expensive for plants
• Inexpensive (economically and environmentally) for humans
atmosphere 78 % N2
N N very strong link
N2 2 NH3
N2 + 8H+ + 8e- + 16 Mg ATP 2NH3 + 2H + 16 Mg ADP + 10 Pi
Soybean nutrient demand
Soybean 3000 kg/ha 40 % protein 1200 kg protein/ha.
1200/6.25 192 kg N/ha.
Soil 1,5 – 2 % OM Mineralization rate 2 - 4 % = 40 – 50 kg N/ha.
Straw: 30 - 40 kg N/ha.
Total N Soil: 70 – 90 kg N/ha.
Efficiency factor: 0,75
Total N available: 52,5 – 67,5 = 60 kg N/ha average
Balance: 192 kg N/ha – 60 kg N/ha = - 132.80 kg N/ha without BNF.
In poor Nitrogen systems: legumes give N
In rich Nitrogen systems: legumes uptake N
0 50 100 1500
10
20
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50
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N applied (Kg/ha)
Kg
of
N f
rom
BN
F in
th
e g
rain
(kg
/ha)
Scott and Aldrich, 1970.
Soybean nutrient demand
Soybean nutrient demand
Diaz-Zorita, 2002
*N at sowing
Soybean nutrient demand
• Early N fertilization inhibits nodulation and compromises BNF (Streeter
1985;Gonzalez 2003, Hungria et al 2005).
• N fertilization responses are more likely over 4500 kg ha-1(Salvagiotti et
al 2008).
• Soil N fertilization in late season increased yield on irrigated soybeans
in US (Lamond and Wesley 2001).
• Rizobacter overview
• N nutrition in Soybean: BNF and mineral N
• Commercial product launch in Hungary in 2019
• Summary
Presentation content
• Specially selected strains of Bradyrhizobium japonicum
• Liquid inoculant
• More than 2 x 109 CFU/ml
• 2 year shelf-life
• 20 days of pre-treatment (stored at 22°C)
Launch for Hungary in 2019
• Rizobacter overview
• N nutrition in Soybean: BNF and mineral N
• Commercial product launch in Hungary in 2019
• Summary
Presentation content
• BNF is the cheaper and most sustainable way to supply 50-
70% of soybean’s N requirements.
• Early season N applications, generally not recommended.
• Late season N applications, only if exploring high yields
(>4500 kg ha-1).
• Rizobacter product (Rizoliq TOP S) in Hungary for 2019
season.
Summary
