I found this article in a link from comrade Malekafzali's twitter account written by Luke Carneal. It is a good overview of agricultural issues in Palestine and food issues in Gaza specifically. A few excerpts:

Michael Fakhri, the United Nations Special Rapporteur on the Right to Food, found in his most recent report that “Israel has destroyed approximately ninety-three per cent of the economy of the agriculture, forestry and fishing sector.” That report, released in July, contextualizes Israel’s attacks on Gaza’s food system as a key strategy in its genocide.

Heirloom seeds have been largely replaced in Gaza by hybrids, which large agribusiness monopolies import. These seeds, especially when combined with other modern farm technologies like synthetic nitrogen fertilizer, can increase yields substantially. It is not common practice to save hybrid seeds, as the next generation is almost guaranteed to produce diminished results. This situation keeps growers as perpetual patrons of the multinational corporations who own and sell these elemental farm inputs.

The vast majority of farms in the Gaza Strip are smallholdings. I spoke with an agricultural expert in Gaza who estimated that more than ninety-five percent of the farmers in the strip cultivate plots that are between a half and three dunams (a dunam is equivalent to 1,000 square meters). In most US cities, less than one percent of the food available to consumers is grown on urban farms.