Can a text message change what a farmer plants?

This is a question I keep coming back to as a comms person who's spent time around agricultural development work. Not "can we push out more messages," but something narrower and harder: can the right message, on the right channel, actually move someone from "I've heard of this improved seed" to "I bought it and planted it"?

I got deep into this a while back while working on a research project , and it's stayed relevant to how I think about comms work in development generally, because seed adoption is really just a communication and behavior-change problem wearing an agricultural costume.

The problem isn't that improved seeds don't exist

Tanzania has improved varieties of beans, groundnuts, sorghum, seeds bred to yield more, resist disease, handle drought better. The problem is that a lot of young agripreneurs either don't know these seeds exist, don't trust them, or can't find a reliable source. Traditional extension services, the government agents who used to walk farm to farm with this information, are stretched thin, underfunded, and honestly not built for how young people consume information anymore. Meanwhile, almost every young person involved in agriculture here has a phone. So there's an obvious question sitting right there: why not use the phone?

Strip away the jargon and it's an audience-and-channel problem

"Digital communication tools" sounds fancy in a proposal, but on the ground it's SMS alerts, mobile apps, social media groups, sometimes voice messages. Projects like Accelerate (run through the Alliance of Bioversity International and CIAT, where I've worked) have been testing this in Tanzania, getting information about improved seed varieties to young traders and farmers through channels they already use daily, instead of waiting for someone to physically visit the village.

The part that caught my attention as a comms person, not a researcher, is the audience mapping. The obvious move is to target farmers directly. But in a lot of these value chains, the young trader, the person who buys seed in bulk and resells it, is actually the higher-leverage audience. Get the trader informed and convinced, and that trust and knowledge moves through them to dozens of farmers they already deal with. It's the classic comms lesson of finding your real influencers instead of your most obvious audience, just applied to a seed value chain instead of a media landscape.

Why "send more texts" was never going to be the answer

Anyone who's done comms work in development knows this instinctively: information alone doesn't change behavior. People adopt something new when they trust it, when it's easy to act on, and when someone they respect has already tried it and it worked. That's not agricultural theory, that's just how persuasion works, Everett Rogers wrote about it decades ago as diffusion of innovation, and it holds up in more recent work out of Kenya, Nigeria, and Ghana too.

So a message that just says "new maize seed available, 20% higher yield" does very little by itself. What seems to work is layering the message with visible proof, a neighbor's better harvest, a trader vouching for the seed, a WhatsApp group where farmers ask each other questions in real time and see other people's answers. The digital tool is the delivery pipe. The trust is still built the old way, through people, testimony, and repetition, the channel just makes that spread faster and cheaper than door-to-door extension work ever could.

What's still genuinely unclear — even to the researchers

I won't pretend this is fully solved. Most of the studies I came across, from India, Kenya, Nigeria, South Africa — look at ICT and agriculture broadly: market prices, weather info, general advisory services. Very few zoom in specifically on improved seed adoption among youth. Even fewer break down which channel actually moves the needle, SMS versus social media versus a dedicated app. Nobody's really disaggregated that for Tanzania's youth agripreneurs specifically.

As a comms person, that's the gap I find most interesting: not "does digital work," but "which channel, for which audience, saying what, backed up by whom." That's a comms question through and through, and it's one development projects don't always ask with enough precision.

Why I'm writing this down

I care about this because it's a good example of something I keep seeing in development work: comms gets treated as the delivery mechanism at the end of the process, when really it should be part of how the whole intervention is designed from the start. Tanzania has one of the youngest populations in Africa, agriculture is still the sector most of that youth touches in some way, and the tools to reach them cheaply and at scale already exist. The gap isn't the technology. It's the strategy behind who says what, through which channel, and who they trust enough to believe it.

This is the first of what I hope will be a few posts pulling apart pieces of development communication work I've done and thought about over the years, some from formal research, some from actual project work, some just from paying attention. If you're working on comms strategy in agriculture or development more broadly, I'd like to compare notes.