Wheat crops usually yield more when grown after another species than when grown after
wheat. Quantifying the yield increase and explaining the factors that affect the increase will …

During the 20th century, farmers around the world replaced legume rotations and other
traditional sources of nitrogen (N) fertility with synthetic N fertilizers. A sizable percentage of …

Phosphorus (P)-deficiency is a significant challenge for agricultural productivity on many
highly P-sorbing weathered and tropical soils throughout the world. On these soils it can be …

Many agricultural soils worldwide in their natural state are deficient in phosphorus (P), and
the production of healthy agricultural crops has required the regular addition of P fertilisers …

Increases in the concentrations of greenhouse gases, carbon dioxide (CO2), methane
(CH4), nitrous oxide (N2O), and halocarbons in the atmosphere due to human activities are …

Biological N2 fixation (BNF) by associative diazotrophic bacteria is a spontaneous process
where soil N is limited and adequate C sources are available. Yet the ability of these …

To increase crop yield per unit of scarce water requires both better cultivars and better
agronomy. The challenge is to manage the crop or improve its genetic makeup to: capture …

The efficient capture and utilisation of fertiliser nitrogen (N) by cereals has implications for
crop growth, grain yield, farm profits, the environment and human nutrition. Extensive …

This review deals with improving the performance of dryland crops in dry, mainly semiarid,
environments. Although such crops are often limited by water, the development of the notion …

Eco‐efficiency in the simplest of terms is about achieving more with less—more agricultural
outputs, in terms of quantity and quality, for less input of land, water, nutrients, energy, labor …