IPI International Potash Institute
IPI International Potash Institute

Regional activities

IPI activity in sub-Saharan Africa/Ethiopia

Coordination: sub-Saharan Africa/Ethiopia

New Publications

this page shows the latest two publications - click here for full list

Carbohydrates as a nitrogen use efficiency indicator in cassava

Carbohydrates as a nitrogen use efficiency indicator in cassava

Poster prepared by John O. Omondi
2018 (June)

With the increasing cost of fertilizers and rising environmental concerns, the effectiveness of nutrient application needs to be studied thoroughly for every crop, condition, and farming practice.

This poster by John O. Omondi was presented at the “World Cassava Conference”, 11-15th June, in Cotonou (Benin, Africa).

The poster summarizes research to establish the response of cassava to nitrogen, and to determine a physiological indicator to its effectivity on yields under fertigation.

For more details contact Mr. Eldad Sokolowski, IPI Coordinator for China and SSA/Ethiopia.

This publication is available online only
Teff Compendium

Teff Compendium

24 pages

This leaflet is a summary of an experiment conducted to explore the deficiency symptoms in Teff.

The experiment took place in a green house using 3 litre pots, filled with perlite. Each nutrient was tested at three levels: zero, low and optimal level.

The treatments were based on the nutrient omission method where all but one nutrient was omitted at a time. The nutrients that were tested were N, P, K, S, Ca, Mg, Fe, Zn, Mn, Mo and Cu.

The application rates of each nutrient were none or “zero concentration” of the tested nutrient, “low concentration” - contains 10% of what is considered adequate concentration of the tested element - and adequate “optimal concentration” of the tested element.

The optimal nutrient solution was derived from the original protocol developed by Hoagland and Arnon (1938), where a typical growth solution consisting of the essential macro-elements: N, K, P, Ca, Mg and S; and micro-elements: a soluble form of Fe, B, Cu, Mn, Ni, Zn, Mo, Cl.

The results are summarised in the leaflet.

To obtain a hard copy of the Compendium please contact IPI Coordinator for SSA/Ethiopia Eldad Sokolowski

This publication is available direct from Eldad Sokolowski.
For more information, please contact the regional coordinator
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The Role of Potassium (K) in the Plant (in Urdu)
Potassium and Nitrogen Use Efficiency (NUE) in Urdu
Potassium in Soil and Plant Systems (in Urdu)
IPI profile infographic
Chloride - an essential nutrient
Potassium and Nitrogen Use Efficiency (NUE)
Managing Water and Fertilizer for Sustainable Agricultural Intensification - infographic
Potassium Improves your Crop Quality
Potassium Improves your Health
Potassium in Soil and Plant Systems
The Role of Potassium (K) in the Plant
What does a Plant Need to Live
Assessment of the Impact of Targeted Use of Fertilizer on Irrigated Rice in Asia
The Role of Potassium (K) in the Plant (in Urdu)

New publication

What's new in the region...

  • Publication: Carbohydrates as a nitrogen use efficiency indicator in cassava more >
  • Paper: Response of Teff [Eragrostis tef (Zucc.) Trotter] to Potassium Fertilizer Application in Four Districts of North Shewa, Ethiopia more >
  • Paper: Rice Response to Potassium Fertilization in Mwea, Kenya more >
  • Paper: Potassium Availability in Selected Clayish Soils of the Ethiopian Central Highlands: Reassessment of Soil Testing Methods more >
  • Publication: Teff Compendium more >