Think Agronomy: PGRs and Maize weed control

This week my attention has been drawn to two interesting agrochemicals, and aerial imaging for crop scouting I first started using aerial imaging a couple of years ago, when I decided that I needed to gather as much data as possible about…

Maize Nitrogen Topdressing & Fall Armyworm Update

By David Jones, Broad Acre Agronomist We had a lot of discussion last week within our agronomy team about the problem of getting Nitrogen (mainly Urea) into the plant in dry weather. So, I start this week with a really useful graph that I often…

Spray Adjuvants; a dark science?

There is always intense discussion about the use of spray adjuvants among farmers and agronomists. As an independent agronomist I feel that they are often used unnecessarily, however in many situations they can improve the effectiveness of sprays…

Fungicides basics – working out what your crop needs

Most of us know fungicides by their brand names. But when you want to get scientific about farming, it’s important to understand a bit more about which ones to use in different crops, and why they suit particular situations. Triazoles These…

Sprayer Cleaning and Hygiene Newsletter

As the spraying season picks up, I always have plenty of discussions with farmers about cleaning out sprayers, and which order to spray crops in order to minimise downtime. It is crucial to remember that crop growth can be affected by tank residues…

Practical Steps to Optimising Nitrogen Applications

The optimum amount of Nitrogen that a crop needs varies significantly, not only depending on soil type and yield potential, but also from year to year. Nitrogen commonly represents the largest single variable cost in many crops, but how…

Understanding the role of Cover Crops

Cover crops have certainly made it into the mainstream in the last few years. What was known as a “Green Manure” and was seldom seen outside organic farms, is now much more widespread thanks in part to an increasing awareness of soil health…

Brome Grass Weed Control

Standing in a soil pit at a recent CropNuts and Cereal Growers Association Field Day near Eldoret, I asked how many farmers have Brome Grass on their farms. I was surprised when around three-quarters of farmers raised their hands and they looked…

Link between Aflatoxin and Maize Nutrition

Researchers here in Kenya have established a link between the potentially harmful Aflatoxins, and poor crop health and nutrition in maize. Improved soil fertility, agronomy and soil testing can all help reduce levels of this carcinogen in grain. Aflatoxins…

Fall Army Worm threat grows closer

Reports have been gathering recently about Fall Army Worm, a potentially devastating pest of Maize which has been sweeping from West Africa, down to the South of the continent and now towards us here in Kenya. Originally a pest of the southern…