Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2023
Authors
Divina Gracia P. RodriguezAbstract
The world's burgeoning billions have been kept fed thanks to the "Green Revolution" of the 20th century, which featured new hybridized crops with enhanced yields. Often deemed a miracle of science, it was also made possible by energy-intensive industrial fertilizers. Fritz Haber and Carl Bosch were each awarded the Nobel Prize for their contributions to the widely used processes for synthesizing ammonia from nitrogen taken from ambient air and hydrogen derived from fossil fuels. These ammonia-based nitrogen fertilizers, along with mined fertilizers, today help to feed the world, something Thomas Robert Malthus never envisioned in his 18th century writings warning of overpopulation. Today we are concerned with another green revolution that seeks to end the use of fossil fuels, which when burned create emissions that are dangerously warming the atmosphere and creating the need for a second agricultural revolution to ensure the world's billions can still be fed in the face of drastic climatic extremes. So as we look to decarbonize the world's economy and phase out the use of fossil fuels, what is the fertilizer industry doing to green its highly fossil fuel-dependent industrial and mining processes? We talk with Alzbeta Klein, CEO of the International Fertilizer Association, freshly returned from COP28 in Dubai, where for the first time the world's nations agreed to the need to phase out fossil fuels to temper the runaway climate change we are experiencing. "Food is energy, and we need to understand that connection," Klein says. "We need to understand the transition for the energy markets, and we need to understand the transition for the food market because the two go hand-in-hand." We also hear from Hiro Iwanaga of Talus Renewables, a nitrogen fertilizer startup at the forefront of using photovoltaics to crack hydrogen from water, rather than fossil fuels. Also freshly returned from Dubai, Iwanaga talks about his company's demonstration project now under way in Kenya, and the company's next projects here in the United States. "The green hydrogen tax credit that was passed as part of the Inflation Reduction Act makes our product cost-competitive," he explains. Also, Brandon Kail of Rocky Mountain BioAg speaks to his company's approach employing soil microbes as the foundation of a non-fossil fuel-based approach to plant nutrition, and Divina Gracia P. Rodriguez of the Norwegian Institute of Bioeconomy Research tells us about an EU-funded project in Ethiopia she is spearheading that seeks to address barriers to the adoption of human urine-based fertilizers.
Authors
Ralf Rautenberger Alexandre Detain Kari Skjånes Peter Simon Claus Schulze Viswanath Kiron Daniela Morales SanchezAbstract
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Authors
Arne Stensvand Katherine Ann Gredvig Nielsen Nina Trandem Vinh Hong Le Lill-Iren Hansen Anita SønstebyAbstract
The effect of steam thermotherapy on Botrytis spp. populations in strawberry transplants was evaluated. Tray plants rooted in 0.2 L peat plugs of seasonal flowering cvs. Falco, Sonsation, and Soprano, and everbearing cvs. Favori and Murano were pre-treated with steam at 37 °C for 1 h, followed by 1 h at ambient temperature and air humidity, and then 2 or 4 h steam treatment at 44 °C. Except for one cultivar with a slight reduction in yield, there were no negative effects on plant performance. Compared to untreated transplants, mean incidence of Botrytis on the five cultivars was reduced by 43 and 86% with the 2 and 4 h treatments, respectively. Within cultivars the reduction was significant in 2 and 3 experiments following the 2 and 4 h treatments, respectively. Sclerotia from four different isolates of Botrytis were subjected to treatment including 4 h of steam thermotherapy and subsequently tested for viability. Following 14 days of incubation, 90 to 100% (mean 97%) of treated sclerotia failed to produce mycelial growth compared with untreated sclerotia, which all germinated and produced mycelia. Botrytis isolates recovered from both treated and untreated strawberry transplants were tested for resistance to seven fungicides, including boscalid, fenhexamid, fludioxonil, fluopyram, pyraclostrobin, pyrimethanil and thiophanate-methyl. Multiple fungicide resistance was common; 35.5% of isolates were resistant to fungicides from at least three FRAC groups. Results indicate that steam thermotherapy treatment strongly reduces populations of Botrytis spp., including fungicide-resistant strains, in strawberry transplants with negligible negative impacts on the transplants.
Authors
Arne Stensvand Katherine Ann Gredvig Nielsen Nina Trandem Vinh Hong Le Lill-Iren Hansen Anita SønstebyAbstract
No abstract has been registered
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Authors
Shelemia Nyamuryekung'e Andrew Cox Andres Perea Richard Estell Andres F. Cibils John P. Holland Tony Waterhouse Glenn Duff Micah Funk Matthew M. McIntosh Sheri Spiegal Brandon Bestelmeyer Santiago UtsumiAbstract
Virtual fencing systems have emerged as a promising technology for managing the distribution of livestock in extensive grazing environments. This study provides comprehensive documentation of the learning process involving two conditional behavioral mechanisms and the documentation of efficient, effective, and safe animal training for virtual fence applications on nursing Brangus cows. Two hypotheses were examined: (1) animals would learn to avoid restricted zones by increasing their use of containment zones within a virtual fence polygon, and (2) animals would progressively receive fewer audio-electric cues over time and increasingly rely on auditory cues for behavioral modification. Data from GPS coordinates, behavioral metrics derived from the collar data, and cueing events were analyzed to evaluate these hypotheses. The results supported hypothesis 1, revealing that virtual fence activation significantly increased the time spent in containment zones and reduced time in restricted zones compared to when the virtual fence was deactivated. Concurrently, behavioral metrics mirrored these findings, with cows adjusting their daily travel distances, exploration area, and cumulative activity counts in response to the allocation of areas with different virtual fence configurations. Hypothesis 2 was also supported by the results, with a decrease in cueing events over time and increased reliance with animals on audio cueing to avert receiving the mild electric pulse. These outcomes underscore the rapid learning capabilities of groups of nursing cows in responding to virtual fence boundaries.
Abstract
No abstract has been registered