How to Grow Roundup Ready Soybean P1535AM
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Roundup Ready Soybean P1535AM
Glycine max
vegetableP1535AM is a genetically modified soybean cultivar engineered to tolerate glyphosate herbicide applications, enabling broad-spectrum weed control. This early-maturity variety (Maturity Group 1.5) is designed for northern growing regions and produces high yields of oil-rich beans suitable for feed, food processing, and biodiesel production.
When should you plant Roundup Ready Soybean P1535AM in your zone?
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Example Roundup Ready Soybean P1535AM timeline · Pittsburgh, PA (Zone 6b)
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Plant Roundup Ready Soybean P1535AM
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Roundup Ready Soybean P1535AM
Around Jul 26≈ 100 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Zones 3-6; excellent for northern US and Canada due to early maturity and shorter growing season requirement
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Get my Roundup Ready Soybean P1535AM timeline →Growth Stages
Germination & Emergence
7-14 daysSeeds absorb moisture and germinate underground; cotyledons (seed leaves) emerge above soil within 7-10 days
Ensure soil moisture is consistent but not waterlogged to prevent damping-off. Maintain soil temperature above 60°F. Thin seedlings if crowded.
Vegetative Growth
30-40 daysPlant develops true leaves in a trifoliolate pattern; begins rapid stem and leaf expansion; nitrogen fixation by nodules becomes active
Monitor for early weeds and aphids. Apply glyphosate herbicide (Roundup) as needed since this variety tolerates it. Ensure adequate moisture but avoid waterlogging.
Flowering
15-20 daysSmall white, pink, or purple flowers appear in leaf axils; plant reaches maximum vegetative height; flower clusters develop along stem
Critical stage for avoiding stress; maintain consistent water supply (1.5-2.0 inches per week). Reduce nitrogen fertilizer. Monitor for spider mites and pod borers.
Pod Development & Filling
20-25 daysFlowers develop into pods containing 1-3 seeds; pods enlarge and seeds grow; leaf yellowing begins
Continue irrigation through early seed fill; reduce water slightly as maturity approaches. Avoid late-season nitrogen applications. Watch for pod-feeding insects.
Maturity & Harvest Ready
10-15 daysPods dry and brown; leaves yellow and drop; seeds rattle in pods when shaken; plant reaches full maturity
Stop irrigation 2-3 weeks before harvest to allow dry-down. Allow field to dry naturally until pods crack when squeezed. Harvest when moisture content drops to 12-15%.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Monitor populations weekly; spray insecticide if >250 aphids per plant; encourage natural predators like ladybugs
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Hand-pick if populations are low; apply neem oil or pyrethrin-based insecticide; encourage cultural controls
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Increase irrigation to reduce heat stress; spray with miticide if leaves show stippling; release predatory mites
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Early detection and removal; apply insecticide at pod formation if threshold (1 beetle per plant) is exceeded
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Use resistant varieties; rotate crops; practice extended rotations away from soybeans; soil fumigation in severe cases
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Apply fungicide at first sign of lesions; choose disease-resistant varieties; improve air circulation
Uses
Animal Feed & Protein Source
CulinaryP1535AM soybeans are processed into high-protein meal for livestock feed and aquaculture. The seeds are rich in protein (36-40%) and used in poultry, swine, and cattle rations. [source]
Edible Oil Production
CulinarySeeds contain 18-22% oil, which is extracted for cooking oil, margarine, and food additives. Soybean oil is one of the world's most widely used vegetable oils. [source]
Biodiesel & Biofuel
HouseholdSoybean oil can be processed into biodiesel fuel for diesel engines, reducing petroleum dependence. One bushel of soybeans yields approximately 1.5 gallons of biodiesel. [source]
Isoflavones & Plant Compounds
MedicinalSoybeans contain isoflavones (genistein, daidzein) studied for potential health benefits including bone health and hormonal support in food supplements. [source]
Industrial Products
HouseholdSoybean-derived compounds are used in adhesives, plastics, inks, and lubricants as sustainable alternatives to petroleum-based products. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when pods are brown and dry (typically late August to October depending on planting date and zone). Pods should rattle when shaken. Target seed moisture of 12-15% for combining; allow field to cure naturally if possible. Use a combine harvester for commercial-scale production, cutting at pod height. For small-scale harvest, pull plants and thresh by hand or mechanical thresher.
Fun Facts
- 🌱 Roundup Ready soybeans (introduced by Monsanto in 1996) revolutionized weed management by allowing farmers to spray glyphosate herbicide over the entire crop without damaging the plants, dramatically reducing tillage and soil erosion.
- 🌱 P1535AM's Maturity Group 1.5 rating means it requires approximately 1,500 Growing Degree Days (base 50°F) to mature, making it one of the earliest-maturing groups suitable for northern regions with shorter growing seasons.
- 🌱 Soybeans are nitrogen-fixing legumes that form symbiotic relationships with Bradyrhizobium bacteria in soil; a healthy soybean crop can add 100-200 lbs of nitrogen per acre back into the soil, reducing fertilizer needs for subsequent crops.
Gardening Terms
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