Phosphorus management is key to effective deployment of root ideotypes in complex soil environments
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Phosphorus management is key to effective deployment of root ideotypes in complex soil environments. / van der Bom, Frederik J. T.; Williams, Alwyn; Borrell, Andrew K.; Raymond, Nelly; Bell, Michael J.
I: Plant and Soil, Bind 489, 2023, s. 323-340.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Phosphorus management is key to effective deployment of root ideotypes in complex soil environments
AU - van der Bom, Frederik J. T.
AU - Williams, Alwyn
AU - Borrell, Andrew K.
AU - Raymond, Nelly
AU - Bell, Michael J.
PY - 2023
Y1 - 2023
N2 - PurposeWe questioned how root ideotypes selected for deep or shallow root architecture function in complex environments with heterogeneous distributions of phosphorus (P), such as in many cropping systems in north-eastern Australia.MethodsWe used the rhizobox method to evaluate how contrasting genotypes of durum wheat and sorghum (wide and narrow root angle) responded to combinations of starter-P and deep P bands.ResultsAlthough we found evidence that root angle may influence spatio-temporal exploration for deep P bands, (early) plant access to P was the critical driver for plant growth. Without P, root system growth was retarded such that genotypic differences were hardly observed. Access to P boosted root exploration at depth by virtue of greater root system size, such that wide-angle genotypes with P outperformed narrow-angle ones without P. Plastic root responses to P benefited the expression of the broader root system architecture. We observed variation between species and individual parameters, but overall Starter-P and deep P bands tended to deliver complementary benefits when considering plant growth, P uptake, and phenological development together.ConclusionOur study highlights that nutritional constraints may limit the ability of root ideotypes to function in complex target environments. Development and deployment of root ideotypes should consider how local conditions (including soil nutrient distribution, physical and biological properties) influence crop phenotype and their ability to deliver the intended benefits. Within this, soil nutrient management is a critical determinant and an opportunity to influence the target environment.
AB - PurposeWe questioned how root ideotypes selected for deep or shallow root architecture function in complex environments with heterogeneous distributions of phosphorus (P), such as in many cropping systems in north-eastern Australia.MethodsWe used the rhizobox method to evaluate how contrasting genotypes of durum wheat and sorghum (wide and narrow root angle) responded to combinations of starter-P and deep P bands.ResultsAlthough we found evidence that root angle may influence spatio-temporal exploration for deep P bands, (early) plant access to P was the critical driver for plant growth. Without P, root system growth was retarded such that genotypic differences were hardly observed. Access to P boosted root exploration at depth by virtue of greater root system size, such that wide-angle genotypes with P outperformed narrow-angle ones without P. Plastic root responses to P benefited the expression of the broader root system architecture. We observed variation between species and individual parameters, but overall Starter-P and deep P bands tended to deliver complementary benefits when considering plant growth, P uptake, and phenological development together.ConclusionOur study highlights that nutritional constraints may limit the ability of root ideotypes to function in complex target environments. Development and deployment of root ideotypes should consider how local conditions (including soil nutrient distribution, physical and biological properties) influence crop phenotype and their ability to deliver the intended benefits. Within this, soil nutrient management is a critical determinant and an opportunity to influence the target environment.
KW - Root distribution
KW - Root angle
KW - Crop nutrition
KW - Phosphorus placement
KW - Root proliferation
KW - Soil heterogeneity
KW - GENETIC-VARIABILITY
KW - PHOSPHATE-UPTAKE
KW - DEEP PLACEMENT
KW - WATER
KW - GROWTH
KW - ANGLE
KW - FERTILIZER
KW - SYSTEMS
KW - SORGHUM
KW - TRAITS
U2 - 10.1007/s11104-023-06020-8
DO - 10.1007/s11104-023-06020-8
M3 - Journal article
VL - 489
SP - 323
EP - 340
JO - Plant and Soil
JF - Plant and Soil
SN - 0032-079X
ER -
ID: 347485123