Nigel Wilhelm
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View article: Cereal root growth in a sandy soil with a hardsetting subsurface horizon was restricted only under dry conditions
Cereal root growth in a sandy soil with a hardsetting subsurface horizon was restricted only under dry conditions Open
Background and aims High soil strength that develops in sandy soils through compaction and hardsetting processes can severely restrict root growth, reducing access to limited resources. However, it is unclear how variation in soil moisture…
View article: The rhizosphere bacteriome is modified by wheat genotype and growth stage under increased imidazolinone herbicide residues
The rhizosphere bacteriome is modified by wheat genotype and growth stage under increased imidazolinone herbicide residues Open
When imidazolinone herbicides persist longer than intended and remain active in the soil, they can have unknown impacts on soil health. This study investigated the impact of simulated soil residues of an imidazolinone herbicide on shoot dr…
View article: Identifying soil and climate drivers of soil water conditions favourable for deep phosphorus placement for wheat in Australia using spatial modelling
Identifying soil and climate drivers of soil water conditions favourable for deep phosphorus placement for wheat in Australia using spatial modelling Open
Phosphorus (P) fertiliser is often placed shallow, near the seed, and plant-available P tends to be concentrated in the topsoil (0–5 cm), because of its relatively immobile nature and the dominance of no-till cropping systems. Concern abou…
View article: Disentangling carbon stabilization in a Calcisol subsoil amended with iron oxyhydroxides: A dual-13C isotope approach
Disentangling carbon stabilization in a Calcisol subsoil amended with iron oxyhydroxides: A dual-13C isotope approach Open
View article: Seeding next to previous year’s crop row (near-row sowing) can increase grain yields on water repellent soils
Seeding next to previous year’s crop row (near-row sowing) can increase grain yields on water repellent soils Open
Context The combination of no-till and stubble retention has been shown to preserve old crop roots, which behave as pathways for water infiltration into water repellent soil, by-passing repellent surface soil layers. Aim To evaluate the be…
View article: Management of soilborne Rhizoctonia disease risk in cropping systems
Management of soilborne Rhizoctonia disease risk in cropping systems Open
Rhizoctonia continues to be an important (average annual cost $59 million with potential costs $165 million, Brennan and Murray, 2009) but complex disease in the southern agricultural region, especially lower rainfall region. The fungus Rh…