It's true that Zimbabwe's food economy has been transformed over the past 19 years. Aggregate production of maize has certainly declined, and imports have become more frequent, writes Ian Scoones.Since Zimbabwe's land reform of 2000 - when around eight million hectares of formerly large-scale commercial farmland was distributed to about 175 000 households - debates about the consequences for food security have raged.A standard narrative has been that Zimbabwe has turned from "food basket" to "basket case". This year, following the devastating El Niño drought combined with Cyclone Idai, some 5.5 million people are estimated to be at risk of hunger, with international agencies issuing crisis and emergency alerts.It is unquestionable that this season was disastrous - only 776 635 tons of maize was produced, more than a third below the five-year average. Nevertheless, the story of food insecurity is more complex than the headline figures suggest.It's true that Zimbabwe's food economy has been transformed over the past 19 years. Aggregate production of maize has certainly declined, and imports have become more frequent. But Zimbabwe suffered food shortages, often precipiated by El Niño events, before land reform. These too led to the need for more imports. And surpluses have also been produced since land reform. For example, in 2017, there was a bumper crop. Some of it was stored and has been used to keep people going. Getting behind the headline figures and understanding an increasingly complex food economy is essential. Our on-going research shows just how complicated the picture is.Farming and foodSince land reform, we have been tracking livelihood change in resettlement areas in a number of sites across the country. Our research is exploring how people have fared since getting land, asking who is doing well and not so well, and why. Some of our key findings include:Crop production is higher in the land reform areas compared to the communal lands. Larger land areas allows new settlers to produce, invest and accumulate.There are substantial hidden flows of food between land reform areas and poor rural and urban areas, as successful resettlement farmers provide food for relatives, or sell food informally.There is a significant growth of small-scale, farmer-led irrigation in resettlement areas. This is often not recognised, as production occurs on disparate small plots, frequently farmed by younger people without independent homes.Trade in food across regions and borders, facilitated by networks of traders, often women, is significant, but unrecorded.Market networks following land reform are complex and informal, linking producers to traders and small urban centres in new ways. Outside formal channels, the volume and flows of food through the system is difficult to trace.Simple aggregate analyses of food deficits, estimating the numbers of people at risk of food insecurity, do not capture these new dynamics. National surveys are important, but may be misleading, and local studies, such as ours, often do not match the national, aggregate picture. So, what is going on?Access to food: Complex relationshipsFood insecurity is not just about production, it is also about access. This is affected by the value of assets when sold, the ease with which things can be bought and sold in markets, the value of cash as influenced by currency fluctuations and inflation, local and cross-border trade opportunities, and all the social, institutional and cultural dimensions that go into exchange.When these dimensions change, so does food security. And this is particularly true for certain groups.Take the case of Zvishavane district, in Midlands province of Zimbabwe. In the communal area of Mazvihwa, there was effectively no production this season. Some got a little if they had access to wetlands, and a few had stores. But compared to 30 years ago, production is focused on maize, which stores poorly, rather than small grains that can be kept for years. How are people surviving? Some seek piecework in the nearby resettlement areas; others have taken up seasonal gold panning; others migrate to town, or further afield; others get help from relatives through remittances; while others are in receipt of cash transfers or food hand-outs from NGOs. With small amounts of cash, people must buy food. It's available in shops, but expensive. So a vibrant trade has emerged, with exchanges of maize grain for sugar or other products. And it's especially people from the land reform areas who are selling their surpluses. Many have relatives who got land, and some travel there to get food, but there is also a network of women traders who come and sell in the communal areas.Aggregate surveys almost always miss this complexity. There are sampling biases, as the importance of the resettlements as sites of production and exchange are missed. There are data problems too, as it is difficult to pick up informal exchanges, and income-earning activities on the margins. The result is that each year there are big food insecurity figures proclaimed, fund-raising campaigns launched, but meanwhile people get on with surviving. This is not to say that there is not a problem this year. Far from it. But it may be a different one to that diagnosed.Economic collapse is causing a humanitarian crisisAs the Zimbabwean economy continues to deteriorate, with rapidly-rising inflation, parallel currency rates, and declining service provision, whether electricity, fuel or water, the challenges of market exchange and trade become more acute. Barter trade is more common, as prices fluctuate wildly and the value of physical and electronic money diverge. With poor mobile phone networks due to electricity outages, electronic exchange becomes more difficult too.Collapsing infrastructure has an effect on production also. Fuel price hikes make transport prohibitive and irrigation pumps expensive to run. Desperate measures by government often make matters worse. The now-rescinded edict that all grain must be supplied to the state grain marketing board undermined vital informal trade. Meanwhile, the notoriously corrupt "command agriculture" subsidy scheme directs support to some, while excluding others from the provision of favourable loans for government-supplied seed, fertiliser, fuel or equipment. Economic and infrastructural collapse is threatening food security in Zimbabwe. Even if there is good rainfall this season, the crisis will persist. Farmers will plant, produce and market less this year. While food imports are needed for targeted areas and population groups for sure, this may not be the biggest challenge. Stabilising Zimbabwe's economy is the top priority, as economic chaos is causing a humanitarian crisis.- Ian Scoones, Professorial Fellow, Institute of Development Studies, University of Sussex.This article is republished from The Conversation under a Creative Commons license. Read the original article.