7.5.2 The Kayapó: Flexible Horticulture

In the eastern Amazonian rainforest, beside the Xingu River, live a group of people known by their neighbors as the Kayapó. Mixing slash-and-burn horticulture with gathering and hunting and some animal domestication, the Kayapó have created an ingenious and flexible way of life that carefully cultivates the resources of the rainforest, savanna, and intermediate zones (Posey 2002).

Like most farming societies, the Kayapó rely on a small set of staple carbohydrate crops, including sweet potato, manioc, maize, and taro. Every three to five years, they clear new plots for their gardens, leaving the old plots fallow. Rather than passively letting the old plots regenerate, however, the Kayapó plant fruit trees, medicinal plants, and other desirable vegetation that keep the plots productive throughout the fallow period. They also transplant edible and medicinal plants alongside the paths that serve as transit routes throughout their territory. The Kayapó venture out on these paths in gathering-and-hunting expeditions that supplement their farming endeavors during part of the year. Women gather fruits, nuts, and berries, and men hunt armadillos, deer, anteaters, and wild pigs. Like the Hadza, the Kayapó regularly harvest honey, the sweet treat of the forest. Another delicacy is the tortoise, slaughtered in large numbers for special festivals. The Kayapó also fish with bows and arrows as well as nets and plant-based poison. Sometimes, women stay in the village while men go hunting or fishing.

Because they farm, the Kayapó live in villages for most of the year. Extended-family houses are situated in a circle surrounding a central public space with a men’s house in the center. Social activities are coordinated by groups based on gender, age, and extended family. Most villages have two men’s societies, each one associated with a women’s society. When a boy becomes a man, he chooses which society he wants to join, usually that of his intended father-in-law. After he marries, his wife joins the women’s society associated with her husband’s group. Each society has its own leader and meeting place.

Kayapó life is organized according to seasons. Planting is done in the “low water” season, and farming continues until harvest. After this, wild fruits ripen, attracting game for the hunting season, the “high water” time. This is followed by a period of leisure, family activities, and increased fishing. Then, a new year begins. Kayapó culture marks these seasons with a calendar of ceremonies. Festivals celebrate the farming and hunting seasons, and specific rituals are performed to promote the success of these subsistence methods.

The Kayapó are deeply knowledgeable about their environment and work diligently to cultivate the diversity of flora and fauna in the various ecological zones of their territory. In addition to an impressive store of general knowledge, each village has individuals with expertise in soils, plants, animals, and medicines. The Kayapó identify many different micro-zones within the continuum between forest and savanna, associating each zone with a distinct set of interrelated plants, animals, and soil types. They attract certain species of game for hunting by sowing specific plants in specific areas. For farming, they use ground cover such as plants, logs, leaves, straw, and bark to adjust the moisture, shade, and temperature of soils. They fertilize certain crops with the ash of specific plants, making use of the vegetation cleared and weeded in farming. They meticulously design their gardens in concentric circles to provide optimal light and water to each species of plant, and they practice complex forms of intercropping of plants that benefit one another. For instance, several plants are considered “banana neighbors,” good to plant next to bananas. Among these is a plant called “child-want-not,” a plant used by Kayapó women to regulate fertility.

In open areas, the Kayapó create small areas of special diversity called apêtê, or “forest islands.” To create an apêtê, they first spread a layer of organic matter, such as termite nests, then sow seeds and transplants of useful trees and plants in the mound of nutrient-rich soil. As the plants grow, the Kayapó cut down the highest trees in the center to provide more light throughout the apêtê. The result is a store of medicinal and edible plants as well as a nice, shady place to rest in the middle of an open field. Sometimes, apêtê include vines that produce potable water, providing a sort of drinking fountain for people as they travel about the territory.

The nurturing of plant biodiversity is important to the practice of medicine among the Kayapó. They identify and cultivate hundreds of plants used to treat specific ailments such as diarrhea, scorpion stings, and snakebites. They organize their knowledge of both illnesses and plants in complex classificatory schemes. The Kayapó identify 50 separate types of diarrhea and treat each one with a specific plant medicine.

The Kayapó are also masters of zoology. They study the anatomy and behavior of the animals in their environment and use that knowledge for hunting and farming. For instance, when a garden is infested with leaf-cutting ants, Kayapó farmers deliberately plant nests of smelly ants around the plot. The pheromones of the smelly ants scare away the destructive leaf-cutting ants. Smelly ants can also be crushed and inhaled as a medicine to clear the sinuses.

The Kayapó keep many pets, including birds, snakes, spiders, and various mammals. One survey found more than 60 species of animal kept as pets in one village alone! Children are encouraged to observe the behavior of their pets to learn as much as possible.

The Kayapó have developed a vast store of knowledge about their surroundings, and they use that knowledge to promote plant and animal biodiversity and nurture their environment. Some anthropologists suggest that industrialized societies could learn much about environmental management and ecological sustainability from horticultural groups such as the Kayapó.