Instant Insights Improving Crop Nutrient Use Efficiency
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Instant Insights: Improving crop nutrient use efficiency
Author: Prof Ulrike Mathesius
language: en
Publisher: Burleigh Dodds Science Publishing
Release Date: 2021-08-17
This specially curated collection features four reviews of current and key research on improving crop nutrient use efficiency. The first chapter explores the relationship between rhizobacteria and plant roots, looking primarily at the recruitment of rhizobacteria by the plant to carry out particular functions, such as nutrient acquisition. The chapter highlights our current understanding of the molecular determinants of legume nodulation as well as challenges for improvements of biological nitrogen fixation in legumes and non-legumes. The second chapter considers the rising use of nitrogen (N) fertilizer in agriculture and its role in the shrinking contribution of soil organic N. The chapter explores the impact of the inefficient management of N (low nitrogen-use efficiency) and the consequent developments of major environmental issues, such as pollution to groundwater, oceans and the atmosphere. The third chapter addresses key issues in using N fertilizers in wheat production, such as product cost and environmental impact. The chapter summarises the development of N-efficient cultivars and their economic benefits, as well as their role in reducing the environmental impact of excessive N fertilizer inputs, whilst maintaining respectable yields. The final chapter considers the use of breeding techniques, including genetic variability, to develop more efficient wheat varieties with improved traits related to nitrogen capture, nitrogen assimilation and nitrogen remobilization.
Instant Insights: Nitrogen-use efficiency
Author: Various authors
language: en
Publisher: Burleigh Dodds Science Publishing
Release Date: 2024-10-29
Considers the impact of nitrogen overuse on crop yield, grain quality and profit Discusses recent advances in understanding nitrogen cycling in soil Highlights the need to develop more efficient varieties of wheat with improved traits related to nitrogen uptake, assimilation and remobilisation
Instant Insights: Improving crop weed management
Author: Neil Harker
language: en
Publisher: Burleigh Dodds Science Publishing
Release Date: 2021-08-17
This specially curated collection features five reviews of current and key research on improving crop weed management. The first chapter highlights the need for alternative weed control strategies that will preserve herbicide efficacy, as well as agricultural and environmental sustainability. The chapter discusses the role of integrated weed management (IWM) in achieving this through the implementation of practices that can improve plant health, such as crop rotations and no-till farming. The second chapter considers the use of IWM in barley cultivation. After an initial outline of more traditional control methods, primarily the use of herbicides, the chapter provides an example of the successful implementation of IWM in barley in the form of two case studies. The third chapter reviews the impact of weeds on maize grown under temperate conditions in the United States and Europe. It provides a summary of current weed management systems and discusses the issue of herbicide resistance in weed varieties. The fourth chapter reviews the use of IWM in rice cultivation for improved crop productivity and performance and offers detailed discussions on the variety of techniques that can be incorporated into an IWM strategy to achieve this. The final chapter presents a number of weed management options and considerations for sorghum, and discusses the critical period for weed control to occur.