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Soybeans are an edible legume that are very nutritious, as they are high in protein, calcium, fiber, iron, magnesium, and other vitamins and minerals. Soybeans are also very versatile, as they can be cooked, fermented, dried, and turned into products like milk, flour, tofu, and more. Soy is a huge crop for many commercial farmers, but it can also be grown in your own backyard as long as you get a good three to five months of warm weather.
Steps
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Select the right type of seeds. There are thousands of different types of soybeans. If you want to eat your soybeans, make sure you have an edible, green variety. If you want to make soy milk or flour, find a yellow-seeded variety. If you are planning on drying the soybeans, get a black-seeded variety.
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Pick the right soil. Choosing the right soil for your soy plants has many advantages, including that there will be fewer weeds, less erosion, and the right balance of nutrients and pH in the soil. This will produce healthier plants with better yields.
- The best type of soil for soybeans is well-draining loam that isn't packed too tightly.
- If you're working with soil that has a high clay content, you can make it more suitable for growing soy by mixing it with peat moss, sand, or mulch.
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Plant at the right time. Soybean plants will generally produce the highest yields when the beans are planted in May, but the soil temperature is something you have to take into consideration as well.
- The ideal time to plan soybeans is two to three weeks after the last frost, when the soil warms to about 60 F (15.5 C) and the air to about 70 F (21 C).
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Prepare the seedbed. Soy plants need a good balance of nutrients in the soil to grow properly. If there are too many or too few nutrients, the plants won’t grow properly. Therefore, it’s important to add a fertilizer to the soil if the area hasn’t been enriched in recent years.
- For soil that hasn’t been enriched recently, add aged manure or compost to the soil to add more nutrients to the seedbed before planting.
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Inoculate the seed. One particular nutrient that soy plants require a lot of is nitrogen. The best way to ensure that they get what they need is to inoculate the beans with Bradyrhizobium japonicum, which is a nitrogen-fixing soil bacterium. [1] X Research source
- To inoculate the beans, place the beans in a bucket and sprinkle them with the bacterium. Use a spade or small shovel to mix the beans and coat each one.
- Keep the seeds out of direct sunlight and plant them within 24 hours of inoculation.
- You can purchase Bradyrhizobium japonicum through catalogues, online, research institutions and/or in some gardening and farm supply stores.
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Plant the seeds. Sow the soybeans 1.5 inches (3.8 cm) deep into the soil, and space the beans about 3 inches (7.6 cm) apart. Plant the beans in rows that are about 30 inches (76 cm) apart. [2] X Research source
- Water the beans once they’ve been planted, but only until the soil is moist. Do not overwater newly planted beans, otherwise they may crack.
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Keep rabbits away. Rabbits love soybean shoots, and will devastate your crop if you don’t protect the growing plants. To protect your crop from rabbits, put a fence around the perimeter of your garden. [3] X Research source
- You can make a simple fence by driving a few stakes into the ground around the garden and attaching chicken wire to them.
- You can also purchase premade panels of garden fencing.
- Another method is to plant metal rings throughout the garden bed and cover them with horticultural fleece.
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Thin out the soybean crops. Once the crops have sprouted a few inches, you should remove weaker plants to let the stronger plants flourish. To this, cut the weak seedlings at ground level; do not disturb their roots. The remaining plants should be spaced about 4-6 inches (10-15 cm) apart.
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Weed the area regularly. Soybeans do not like to compete with weeds, and will quickly be choked out if there are lots of weeds growing in the same garden. Weed the garden bed often and pull out weeds with a spade or by hand.
- Once the plants establish themselves and get larger, you don’t have to worry about weeding so much, because the soy plants will choke out the weeds on their own. [4] X Research source
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Water. Soybeans typically only need additional water during three stages: when they are first growing and before they erupt from the soil, when they are developing pods, and when they're flowering.
- During these periods, make sure to water the plants frequently enough to keep the soil moist.
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Harvest the pods. Soybeans start to mature in September, and are ready for harvest when the pods are green and the seeds become plump and fully grown. Be sure to harvest the beans before the pods turn yellow. To harvest, simply pick the entire pod off the plant.
- When the seeds are ready, the pods will be between two and three inches (five to eight cm) long.
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Blanch and shock the pods. Fill a large pot with water and bring it to a boil over high heat. Fill another large pot halfway with water and fill the rest with ice. When the water comes to a boil, put the full pods into the water and boil them for five minutes. Then, remove them from the hot water with a slotted spoon and plunge them into the ice bath for five minutes.
- Once the pods have cooled, remove them from the cold water and place them on a clean towel.
- It’s important to blanch and shock the beans because you cannot properly digest raw soybeans.
- Blanching also makes it much easier to remove the beans from the pods.
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Remove the beans from the pods. Take a cooled pod in your hands and gently pinch both ends. As you squeeze, the seams of the pod will open and the beans will pop out. Place the beans in a bowl and repeat until you’ve removed all the beans.
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Use and store the beans. Once the soybeans have cooled, you can eat them immediately, use them in your favorite recipes, or store them for later use. The soybeans will keep in the fridge for about a week, or for storage up to a year, you can process them through:
- Freezing
- Canning
- Drying
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Expert Q&A
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QuestionHow do I pick the right fertilizer for my soybeans?Andrew Carberry is a Food Systems Expert and the Senior Program Associate at the Wallace Center at Winrock International in Little Rock, Arkansas. He has worked in food systems since 2008 and has experience working on farm-to-school projects, food safety programs, and working with local and state coalitions in Arkansas. He is a graduate of the College of William and Mary and holds a Masters degree in public health and nutrition from the University of Tennessee.Add aged compost to the soil before planting, and side-dress your plants at least once during the growing season. Because soybeans are nitrogen fixers, they don't need a lot of additional nitrogen.
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QuestionWhen's the best time to grow soybeans?Andrew Carberry is a Food Systems Expert and the Senior Program Associate at the Wallace Center at Winrock International in Little Rock, Arkansas. He has worked in food systems since 2008 and has experience working on farm-to-school projects, food safety programs, and working with local and state coalitions in Arkansas. He is a graduate of the College of William and Mary and holds a Masters degree in public health and nutrition from the University of Tennessee.The best time to plant soybeans is about 2-3 weeks after your last average frost date.
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QuestionWhat is the effect of innoculant on soybeans, and how do I administer it?Community AnswerInnoculant contains nitrogen-fixing bacteria that attach to the soybean root, enabling the soybean to grow in low nitrogen environments. In high nitrogen environments, soybeans take up elemental nitrogen. There are multiple types of innoculant; follow the instructions on the package and make sure it contains Bradyrhizobium japonicum.
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References
- ↑ https://www.youtube.com/watch?v=b2TfeVwNPp0
- ↑ https://ncsoy.org/media-resources/growing-soybeans/
- ↑ https://www.motherearthnews.com/organic-gardening/growing-soybeans-zmaz80mazraw
- ↑ https://www.motherearthnews.com/organic-gardening/growing-soybeans-zmaz80mazraw
- ↑ https://www.motherearthnews.com/organic-gardening/growing-soybeans-zmaz80mazraw
- ↑ https://www.motherearthnews.com/organic-gardening/growing-soybeans-zmaz80mazraw
About This Article
Article Summary
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To grow soybeans, plant your seeds 1 and ½ inches deep and 3 inches apart in a fertilized seedbed, and give them just enough water to moisten the soil. When your seeds sprout, thin them by cutting the weak seedlings to the ground and spacing the remaining plants 4-6 inches apart. Try to weed your seedbed regularly, especially while the plants are small and easily choked out by weeds. However, water your seedbed only sparingly, just when your plants are first growing, when they’re developing pods, and when they’re flowering. For information from our Professional Gardener reviewer on harvesting your soybeans, read on!
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