SKU: 29993874571

Pueraria javanica (PJ) Cover Crop Seeds

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Description

Pueraria javanica (PJ) Cover Crop SeedsPueraria javanica (PJ), also called tropical kudzu (Pueraria phaseoloides), is a fast growing tropical legume cover crop for rubber, coconut and oil palm. It fixes up to 250 kg N ha year (85 to 93% drawn from the air), forms rapid ground cover, and cut runoff 88% and soil loss 98% versus bare soil in replanted rubber. Chemiseed Sdn. Bhd. supplies PJ seed, tested to ISTA and AOSA methods, for Malaysia, Indonesia and export. PLANT CHARACTER Fast

Pueraria javanica (PJ), also called tropical kudzu (Pueraria phaseoloides), is a fast-growing tropical legume cover crop for rubber, coconut and oil palm. It fixes up to 250 kg N/ha/year (85 to 93% drawn from the air), forms rapid ground cover, and cut runoff 88% and soil loss 98% versus bare soil in replanted rubber. Chemiseed Sdn. Bhd. supplies PJ seed, tested to ISTA and AOSA methods, for Malaysia, Indonesia and export.

PLANT CHARACTER

Fast-growing, trailing to twining annual/short-lived perennial legume. Forms a dense, self-regenerating ground cover under plantation canopies. Deep root system contributes to subsoil moisture access and nutrient cycling.

USES
Nitrogen fixation, erosion control, soil moisture retention, potassium cycling, weed suppression, and cover crop for replanting phases. In immature rubber, field research confirms Pueraria javanica can fix up to 250 kg of nitrogen per hectare per year, with 85-93% of that nitrogen drawn directly from the atmosphere at full ground cover. In replanted rubber, a legume cover including Pueraria reduced runoff by 88% and soil loss by 98% versus bare soil (Perron et al., 2024). For optimal germination results, pair with Seed Activator during planting. See also: PJ vs MB Comparison.

GROWTH HABIT
Vigorous establishment under full sun and moderate shade. Produces 14,347 kg of fresh biomass per hectare at 150 days in Philippine plantation trials. Biomass decomposes at 95.66% within 3 months, releasing 3.572% N, 0.245% P, and 0.809% K directly into the root zone.

COCONUT & MULTI-CROP USE
Established as a basin legume in coconut, Pueraria javanica contributes 28.45 kg of biomass and 196.2 g of nitrogen per basin, and can substitute up to 30% of nitrogen fertiliser requirements (Indian Coconut Journal, 2022).

PLANTING TYPE & SEEDING RATE
Pure stand: 4-6 kg/ha; in a legume mixture: 2-4 kg/ha

PLANTING METHOD
Direct sowing, broadcast or rows

DRY MATTER PRODUCTION
8-12 t/ha/year

NO. OF SEEDS/KG
~55,000 seeds

SUPPLIED BY CHEMISEED SDN. BHD.
Pueraria javanica seeds are supplied by Chemiseed Sdn. Bhd., a Malaysian tropical agriculture company specializing in cover crop seeds, soil conditioners, and plantation inputs. Chemiseed is a trusted supplier of leguminous cover crop seeds across the tropics.

GLOBAL AVAILABILITY: TROPICAL REGIONS WORLDWIDE
Chemiseed Sdn. Bhd. exports Pueraria javanica seeds to plantations, agricultural cooperatives, government agencies, and distributors across Southeast Asia (Malaysia, Indonesia, Thailand, Vietnam, Myanmar, Cambodia, Philippines), Latin America (Brazil, Colombia, Ecuador, Costa Rica, Guatemala, Honduras, Peru), Sub-Saharan Africa (Ghana, Nigeria, Cameroon, Ivory Coast, Tanzania, Kenya, Mozambique, Uganda), South Asia (India, Sri Lanka, Bangladesh), and Oceania (Papua New Guinea, Solomon Islands, Fiji). All seed shipments comply with international phytosanitary certification and trade compliance standards. Contact Chemiseed Sdn. Bhd. for bulk seed supply, distributor partnerships, and international delivery.

Related Resources

Research-backed performance
Peer-reviewed evidence

By the numbers

Data from peer-reviewed trials across Malaysia, Indonesia, and the Philippines (rubber, coconut, and replanting systems).

up to 250
kg N fixed per hectare per year
Upper-range biological nitrogen fixation at full ground cover, immature rubber, Southeast Asia.
Vrignon-Brenas et al. 2019, Sustainable Dev. Review (HAL Science)
85-93%
Nitrogen from the atmosphere
Percentage of Pueraria's own nitrogen derived from atmospheric fixation (immature rubber trials).
Vrignon-Brenas et al. 2019, Sustainable Dev. Review
14,347
kg fresh biomass per hectare
Biomass production at 150 days after planting, Zamboanga Peninsula, Philippines trial.
Dept. of Agriculture Region 9, Zamboanga Cover Crop Trial
95.66%
Decomposition within 3 months
Releasing tissue nutrients: 3.572% N, 0.245% P, 0.809% K back into the root zone.
Dept. of Agriculture Region 9, Zamboanga Cover Crop Trial
88% / 98%
Less runoff / less soil loss
Versus bare soil in replanted rubber plantations. 2024 peer-reviewed study.
Perron et al. 2024, Science of the Total Environment
30%
N fertiliser substitution
Green manure legumes including Pueraria javanica can substitute up to 30% of nitrogen fertiliser in coconut basins.
Indian Coconut Journal 2022, Coconut Board of India

All statistics from peer-reviewed or institutional research. Seeds supplied by Chemiseed Sdn. Bhd., available for export worldwide. View Perron et al. 2024 erosion study

How to Order

Small quantities / Retail: For single packs and smaller quantities, shop our retail stores on Shopee and TikTok Shop.

Bulk / Estate: For plantation-scale orders (100 kg+), request a bulk quote with volume discounts.

Export / International: We ship globally. Contact us for CIF/FOB pricing and export documentation.

Marketplace: Retail packs available on Shopee Malaysia and TikTok Shop.

Plan with our free calculators

Estimate the nitrogen this cover crop can contribute with the Nitrogen Fixation Calculator, model erosion control with the Soil Erosion Calculator, or work out the seed quantity with the Cover Crop Calculator. Browse all our plantation tools.

Last reviewed June 2026 by Chemiseed Sdn. Bhd.

Shipping Notes
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Exchange/Return Notes
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SKU: 29993874571

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4.7 ★★★★★
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jalcruces
Lexington, US
★★★★★ 5
Good Sport Watch
Color: Blue/Black
This is a good sport watch. I wear these to work in all sorts of conditions...and they take a beating. I have to get the unisex watches/bands as I have thick wrists for a woman and women's watchbands generally don't fit me. I can't wear the metal watch bands because when I flex my wrist they break. I can't wear the leather bands because when I sweat the band just deteriorates and falls apart. These woven bands are just perfect. I also like that it is velcro. That way you can adjust it perfectly to your wrist. I have worn these watches for nearly 15 years. It has two time functions - so that you can have regular time and maybe the time in another country. It has a split lap stop watch so that you can time each lap as well as your full run. Time, date, alarm, and hour beep if you so desire. It also has a back light which is really handy to tell time in the dark. Only problem with that is at about the year mark, the battery is so low that the light will come on, but the numbers disappear. But, well, it is what it is. Some reviewers have complained that the band is rather small fitting around the wrist. I am a woman and I bought a womans Timex once. The band was EXTREMELY small and barely fit me at all. It would come off a lot of the time because there was barely any velcro to wrap around. This watch is probably more of a unisex watch. Not a woman's per se, but not a big man's watch either. It is about in the middle. I have a 7.5" wrist and that is about as large of a wrist that this watch will fit. The women's watch that I had previously had would only fit a 7" wrist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 24, 2014
C
Verified Purchase
cybereality
Los Angeles, US
★★★★★ 5
Great no frills watch, love it.
Color: Blue/Black
This watch is a really nice and is perfect for me. It tells the time (duh!), the date and has a stopwatch feature I never use. Mostly I like that it is a no frills product, but it does its job. This is great for people that actually want something that tells the time and not some fancy gold bracelet to impress the ladies. Although I spend most of my time in front of a computer, I imagine this piece would be great for someone with an active lifestyle (biking, running, etc.). The watch itself is mostly plastic and watch-proof and the band is a fabric velcro. For a while I had the older model with a rubber strap and I like this new model much better. The strap is comfortable and easy to take on and off. I wish the strap was a little bigger though, it might be too small for someone with really fat arms. It does have an indiglo feature although I had the older model and the indiglo died after like 6 months. Hopefully this one will last. What can I say, its a watch. If you are looking for something simple with a classic design, look no further.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2010
A
Verified Purchase
Amazon Customer
San Leandro, US
★★★★★ 5
Everything I expected.
Color: Black/Red
Not the watch I would want as an adult but fits my son perfectly. It’s durable, red and makes him happy. It should last him until he is old enough to get a job and make his own style and life choices.
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Reviewed in the United States on April 24, 2026
C
Verified Purchase
Carm
Pawtucket, US
★★★★★ 1
Timex now poor quality
Color: Blue/Black
These watches used to last me years. The past two of these have died in under 6 months. Worthless junk. Will avoid Timex from now on. A single drop of water and the button sends the watch into black screen and reset.
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Reviewed in the United States on May 25, 2026
A
Verified Purchase
Atomask
Fort Morgan, US
★★★★★ 3
Good basic digital watch for women
Color: Black/Gray Stripe, Color: Black/Gray Stripe
Okay, so it's a great watch for women with small to medium wrists. Here's my pros and cons list: Pros: - Super easy to set. The package insert does NOT include instructions. This is my first Timex Expedition watch, so I had no experience going in. All you do is press Set and you use the Start and Stop buttons to move up and down, respectively, through the settings. Easy enough! - I love the simplicity of the watch. It's simple and easy to read. - It has the day of the week AND the month AND the date. I wanted to make sure any watch I get has these features. - The watch band seems high quality. It is fabric/nylon, so it should hold up for several years (we'll see I guess). - The Indiglo is pretty and works great in the dark! Cons: - I have to tighten the band as tight as possible in order to prevent the watch from wobbling around my wrist. It may be because my wrist is small and the watch itself is a bit heavy in comparison. I AM new to wearing a watch, so maybe it's just something I have to get used to. - The display is perfect, but only when looking at it straight on (when facing you directly). If you were to glance over at your watch while you're typing on your computer, you can't see the time. It's too blurry. So the viewing angles are terrible. You can only see the time if you look directly at it. Again, this might be an issue with all digital watches, but I sort of expected more in today's technological world. This is probably my biggest con and biggest disappointment. - The band holder is also nylon, so I had some trouble getting the extra band into the band holder. Now that I think more about it, I'm not sure what a better alternative would be for a nylon band... maybe if they glued the band holder on to the band, it wouldn't move around so much when trying to insert the band into the holder. Once you're inserted it, it seems to stay in place, though. So that's good. But I can see it loosening up and not working well in the future. I've only had this watch since yesterday, so I haven't been able to test its waterproofness yet. I will update this review if I am unhappy with the waterproofness. Overall, it's exactly what I was looking for: a basic digital watch that shows the day and date, with a band that is small enough to fit my female wrist. However, I would have liked it better if the price was $10-15 less than what I paid for it. UPDATE: I've since moved on to a few other watches since this one. I have concluded that I do NOT like having a cloth/nylon watch band, and I prefer the rubber/plastic bands now. The nylon band takes way too long to dry after a shower, whereas the plastic bands don't need ANY drying time. There are a lot of good plastic banded watches out there, and I've tried a few no-name brands on Amazon and have been happier with them than I was with this Timex. They are also not as heavy and floppy on my wrist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 6, 2016

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