Due to the scarcity of alternative organic amendments, the retention of crop residue in fields
can be considered key in promoting physical, chemical, and biological attributes of soil …

The incorporation of organic matter (OM) in soils that are able to rapidly sorb applied
phosphorus (P) fertiliser reportedly increases P availability to plants. This effect has …

The second edition of this book, first published in 1991 and intended for students and
researchers, contains revised and updated material on the theory and practice of nitrogen …

Soil‐fertility depletion in smallholder farms is the fundamental biophysical root cause for
declining per capita food production in sub‐Saharan Africa. An average of 660 kg N ha− 1 …

The beneficial effects of combined organic and inorganic nutrients on soil fertility have been
repeatedly shown, yet there are no guidelines for their management. Organic materials are …

Tithonia diversifolia, a shrub in the family Asteraceae, is widely distributed along farm
boundaries in the humid and subhumid tropics of Africa. Green biomass of tithonia has been …

Phosphorus (P) is an important nutrient required for plant growth and its management in soil
is critical to ensure sustainable and profitable agriculture that has minimal impact on the …

The climate smart agricultural residue management practices which entail reduced tillage
and in-situ crop residue managements are considered pre-requisite for improved soil health …

The Hedley sequential‐phosphorus (P)‐fractionation method has been used in many
countries to study the effects of land‐use and management systems on soil P. Many data …

In 2007 two long-term trials were established in Kenya to contribute research-based
evidence to the global debate on the productivity, economic viability and sustainability of …