On June 15, 1991, Mount Pinatubo in the Philippines blew its top in an eruption of staggering proportions. It sent an ash cloud 28 miles high, filling surrounding valleys with deposits 660 feet thick and destroying almost every bridge within 18 miles. Over 800 people lost their lives.

Some relationships can be complicated. Take the one between sweet potato crops and soil nitrogen, for example.

Too little nitrogen and sweet potato plants don’t grow well and have low yields. Too much nitrogen, however, boosts the growth of leaves and branches at the expense of storage roots. That also leads to low yields.

Scientists have identified a key gene that helps seeds decide whether to germinate.

The MFT gene stops seeds germinating in the dark or under shady conditions, where their chances of survival would be poor, according to new research from the University of York.

Protected riverbank habitats within areas of oil palm cultivation can play a key role in reducing the negative impacts on tropical bird numbers but need to be increased in size, new research from Kent has shown.

A new way of exploring the Mighty Mississippi and surrounding aquifers will take flight in August not by boat; rather, the sky, to identify what resources lie beneath.A new way of exploring the Mighty Mississippi and surrounding aquifers will take flight in August not by boat; rather, the sky, to identify what resources lie beneath.

Despite international breeding efforts, advanced agronomy and effective management of pests and diseases, sugarcane yields have been static for decades owing to constraints on culm development. The culm’s sugar storage capacity is physically limited, restricting the volume of sucrose and biomass that can be obtained from the crop for sugar and ethanol production, according to experts in the area. 

Abandoned farmlands hold potential for the preservation of wetland and grassland birds as rehabilitation zones.

Think summer holidays and you’ll likely call up images of a beautiful beach or a glittering blue lake. But more and more lakes, rivers and coastal areas are plagued by an oversupply of nutrients that causes algae to grow at an explosive rate, which can eventually lead to water bodies that can’t support aquatic life.

Will they bite?

Plants can’t do without phosphorus. But there is often a ‘withdrawal limit’ on how much phosphorus they can get from the soil. That’s because phosphorus in soils is often in forms that plants can’t take up. That affects how healthy and productive the plants can be.