Irrigated soft white spring wheat is largely unresponsive to conservation management in rotations with dry bean, potato and sugar beet

Larney, Francis J.; Pearson, Drusilla C.; Blackshaw, Robert E.; Lupwayi, Newton Z.; Conner, Robert L.

doi:10.1139/cjps-2017-0150

Cited by 3 publications

(2 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CONV rotations (3‐, 4‐CONV) had more intensive tillage (e.g., moldboard plowing prior to potato), no cover crops or compost, and dry bean in wide rows (60 cm), with inter‐row cultivation and undercutting at harvest. Details of CONV and CONS practices were reported for dry bean (Larney et al., 2015), potato (Larney, Pearson, et al., 2016), wheat (Larney et al., 2018), and sugar beet (Larney, Nitschelm, et al., 2016).…”

Section: Methodsmentioning

confidence: 99%

Assessing legacy effects of a 12‐year irrigated cropping systems study with a post‐hoc bioassay

Larney

Pearson

Blackshaw

et al. 2021

Agrosystems Geosci & Env

Self Cite

View full text Add to dashboard Cite

A healthy soil resource is vital to the continued success of irrigated agriculture in southern Alberta. A 12‐yr (2000–2011) irrigated cropping systems study was followed with a dry bean (Phaseolus vulgaris L.) field bioassay in 2012, to assess legacy effects of preceding management. Specifically, a comparison of conventional (CONV) and conservation (CONS) management (reduced tillage, cover crops, compost addition, narrow‐row dry bean) legacies was sought. However, rotational legacies such as preceding phase, length, preceding crop, and interval since previous dry bean were also assessed by the fully phased experimental setup. Only 1 of 18 possible soil management contrasts (CONV vs. CONS, 2000–2011) was significant for the dry bean bioassay in 2012, despite overwhelming evidence of improved soil health (microbial biomass C and β‐glucosidase activity) under CONS management. Monoculture wheat (Triticum aestivum L.) from 2000 to 2011 led to 2 d earlier maturity and higher disease incidence in bioassay dry bean. With wheat as a preceding crop, bioassay dry bean was significantly shorter (4 cm), earlier maturing (2 d), and lower yielding (by 21–35%) than with dry bean, potato (Solanum tuberosum L.), or sugar beet (Beta vulgaris L.) as preceding crops, largely due to volunteer wheat competition. Significantly enhanced bioassay yields (9–13%) with shorter intervals since previous dry bean demonstrated a “legume effect.” Overall, the dry bean bioassay was less effective at assessing soil management legacies (CONV vs. CONS) than rotational legacies such as preceding crop or interval since previous dry bean.

show abstract

Section: Methodsmentioning

confidence: 99%

Assessing legacy effects of a 12‐year irrigated cropping systems study with a post‐hoc bioassay

Larney

Pearson

Blackshaw

et al. 2021

Agrosystems Geosci & Env

Self Cite

View full text Add to dashboard Cite

show abstract

“…A comparative study on different rotation periods in wheat cultivation revealed an increased soil health during the wheat phase of the 5-year rotation compared to the 3-year one, due to a higher microbial biomass [76]. Another study within the same research project showed that the wheat yield amounts were 23-82% higher under various rotation periods, compared to the continuous cultivation of wheat [77]. Overall, the current trend of wheat cultivation in Fars province is not only harming the environment, but could also lead to a reduced seeding efficiency and overall productivity, while increasing production costs due to the need for intensive fertilization.…”

Section: Loss Due To Excessive Seed Usementioning

confidence: 98%

Unraveling On-Farm Wheat Loss in Fars Province, Iran: A Qualitative Analysis and Exploration of Potential Solutions with Emphasis on Agricultural Cooperatives

Ghaziani,

Dehbozorgi,

Bakhshoodeh

et al. 2023

Sustainability

View full text Add to dashboard Cite

Given wheat’s global significance as a primary food crop, and its importance in providing essential nutrition to millions of people worldwide, reducing on-farm losses is crucial to promoting food security, sustainable agriculture, and economic stability. Wheat plays a critical role in food security in Iran, as it is a staple food consumed daily by a large proportion of the population, and is also a vital component of the country’s food self-sufficiency policy. The present study aims to identify the causes and extent of on-farm wheat loss in Fars province, a major wheat-producing area in Iran. Nine experts were interviewed, using open-ended questions, in October 2018. The study revealed that a considerable amount of wheat is lost due to seed overuse, pest infestation, and improper harvesting. The paper discusses the underlying factors associated with these over-arching causes, and highlights their adverse environmental, economic, and societal impacts. The paper also explores potential approaches to take in addressing the issue, and suggests empowering agricultural cooperatives through changes in the government’s engagement with wheat production. This study provides valuable insights for policymakers and stakeholders which are useful for developing effective strategies to reduce on-farm loss, particularly in countries where intensified farming is promoted. These strategies may include limiting the government’s central control and, instead, empowering agricultural cooperatives, as well as adopting supportive approaches, such as improving farmers’ access to proper machinery, and enhancing their sovereignty and freedom.

show abstract

Soil water dynamics over 12 seasons on irrigated dry bean–potato–wheat–sugar beet rotations

Larney

Pearson

Dill³

et al. 2021

Can. J. Soil. Sci.

View full text Add to dashboard Cite

Dry bean (Phaseolus vulgaris L.), potato (Solanum tuberosum L.), wheat (Triticum aestivum L.), and sugar beet (Beta vulgaris L.) are mainstays of irrigated crop production in southern Alberta. Concerns about soil quality and sustainability instigated a 12-yr (2000-11) rotation study to compare conventional (CONV) with conservation (CONS) management practices (reduced tillage, narrow-row dry bean, compost addition, cover cropping). Plant-available water (PAW) was measured using a neutron probe (10–16 count days season-1, n = 148) on all phases of 4-yr (dry bean–potato–wheat–sugar beet) rotations under CONS and CONV management. A visual monitoring approach was used for irrigation scheduling. For dry bean and sugar beet, management allowable depletion (MAD) was exceeded on only 11–15% of neutron probe count days over 12 yr. However, MAD was exceeded on 30% of count days for wheat, and 43% for potato. Significant crop × management interactions showed that PAW was higher with CONS management most frequently on potato, followed by dry bean, wheat, and sugar beet. This order reflected the prevalence of CONS practices directly impacting each crop. Regression analyses showed that potato, wheat, and sugar beet yield increased significantly as mean growing season water table depth (WTD) increased. This was explained by yield suppression due to excessive soil wetness in seasons with high rainfall and shallow WTD. The study provided comparative soil water dynamics for 4 major irrigated crops in southern Alberta, over a 12-yr period, which included record high and low growing season precipitation.

show abstract

Irrigated soft white spring wheat is largely unresponsive to conservation management in rotations with dry bean, potato and sugar beet

Cited by 3 publications

References 60 publications

Assessing legacy effects of a 12‐year irrigated cropping systems study with a post‐hoc bioassay

Assessing legacy effects of a 12‐year irrigated cropping systems study with a post‐hoc bioassay

Unraveling On-Farm Wheat Loss in Fars Province, Iran: A Qualitative Analysis and Exploration of Potential Solutions with Emphasis on Agricultural Cooperatives

Soil water dynamics over 12 seasons on irrigated dry bean–potato–wheat–sugar beet rotations

Contact Info

Product

Resources

About