Cover Crops for Philippine Coconut Estates
Kudzu Seeds Trading supplies Pueraria javanica, Calopogonium mucunoides, Centrosema pubescens and Calopogonium caeruleum seed plus SoilBoost EA soil conditioner to coconut growers across the Philippines: Davao Oriental, Davao del Norte, Quezon, the Zamboanga peninsula, Leyte, and Samar. Legume covers protect the soil surface on coconut estates and help rebuild organic matter on long-cycle plantations.
At a glance
- PH role: The Philippines is among the world's top coconut producers, and the crop is grown mostly by smallholder farmers.
- Key regions: Davao Oriental, Davao del Norte, Quezon (Calabarzon), Zamboanga peninsula, Leyte, Samar, Bicol.
- Institution: The Philippine Coconut Authority (PCA) is the government agency for the coconut industry; check PCA guidance for your area alongside any cover crop programme.
- Why cover crops: Protect the soil surface through the dry season, rebuild organic matter on long-cycle estates, fix biological nitrogen, suppress weeds in widely spaced palms.
- Primary species: Pueraria javanica (PJ) and Calopogonium mucunoides (CM); Centrosema pubescens (CP) and Calopogonium caeruleum (CC) under older shaded canopies.
- Seeding rates: PJ about 4 kg/ha sown alone, CP 3 to 5 kg/ha broadcast, CC 1 to 1.5 kg/ha with 5 to 7.5 kg/ha PJ (Tropical Forages); the CM rate is set on the quotation. Mucuna bracteata (MB) is transplanted, not broadcast.
Product status and figures. SoilBoost EA is a leonardite-derived soil conditioner with about 0.45 percent sulphur and pH 3.84. It is not a fertiliser and not a substitute for one, and it is not a fungicide or pesticide. Seeding rates, nitrogen figures and establishment windows on this page are indicative and site-dependent. Legume cover contributes nitrogen; adjust your fertiliser programme only after soil and leaf analysis shows what the cover supplies on your block.
Why cover crops matter for coconut in the Philippines
Philippine coconut is dominated by smallholders on small farms, and many stands are decades old. Many estates sit on slopes or rolling lowland where decades of bare ground or cogon cover have stripped topsoil and lowered soil organic matter to the point where copra yields plateau or decline. Legume cover-crop intercropping is a long-standing, low-cost route to rebuilding soil function under coconut.
In one trial on laterite soil in Kerala, India, Thomas and Shantaram (1993) measured the green matter and shoot nitrogen of legumes sown in coconut basins and harvested 120 days after sowing: Pueraria (PJ) gave 28.45 kg of fresh green matter and 196.2 g of nitrogen per basin, and Calopogonium mucunoides 27.21 kg and 186.5 g per basin. These are per-basin figures from one site, not per-hectare or annual values; on your estate the contribution moves with soil type, canopy shade, rainfall and cover age. Legume cover contributes nitrogen; adjust your fertiliser programme only after soil and leaf analysis shows what the cover supplies on your block.
The second value-driver is dry-season moisture. Coconut palms are vulnerable to soil moisture stress during prolonged dry months (December to April in much of the Philippines, longer in Type I climates on the western Visayas and northern Mindanao coasts). A live legume cover acts as a living mulch over the interrow, but it also uses water: keep it off the palm basin and cut it back if the palms show moisture stress in long dry spells.
Recommended species for Philippine coconut
Pueraria javanica (PJ)
A classical choice for coconut interrows. Broadcast; Tropical Forages gives about 4 kg/ha sown alone. Per coconut basin in one Kerala trial: 28.45 kg fresh green matter and 196.2 g shoot N at 120 days (Thomas and Shantaram 1993). Hectare-scale nitrogen contribution varies widely with soil, shade and cover age, so treat it as indicative rather than a design value.
Primary / about 4 kg/ha (Tropical Forages)
Calopogonium mucunoides (CM)
Aggressive pioneer for acidic and degraded coconut land. Broadcast; the seeding rate is set on the quotation for your site. Per coconut basin in the same trial: 27.21 kg fresh green matter and 186.5 g shoot N (Thomas and Shantaram 1993).
Pioneer / rate on quotation
Centrosema pubescens (CP)
Broadcast 3 to 5 kg per hectare (Tropical Forages). Persistent under partial shade, suited to older closed-canopy coconut stands where PJ thins out.
Shade-tolerant / 3 to 5 kg/ha (Tropical Forages)
Calopogonium caeruleum (CC)
Tropical Forages gives 1 to 1.5 kg/ha sown with 5 to 7.5 kg/ha PJ. Climber that persists under shade alongside CP in older coconut estates.
Shade-tolerant / 1 to 1.5 kg/ha with PJ (Tropical Forages)
Mucuna bracteata (MB)
Used selectively on young or replanted coconut land where slope and erosion risk are high. MB is transplanted from nursery-raised seedlings, never broadcast: MPOB TT No. 501 (Hasnol Othman, Farawahida Mohamad Darus and Zulkifli Hashim, 2012) used about 320 seedlings per hectare, two per palm point, raised from about 500 seeds (75 g); Samedani et al. (2015) used 680 seedlings per hectare. For MB nitrogen, one 15N isotope-dilution study under three-year-old oil palm on Jawa Series soil in Malaysia measured roughly 67 to 84 percent of its nitrogen derived from the atmosphere (Ndfa) (Cheah et al. 2010); any absolute kg N/ha/yr figure is indicative and site-dependent.
Selective / transplanted, not broadcast
SoilBoost EA
Humic soil conditioner, leonardite-derived, with about 0.45 percent sulphur and pH 3.84. Broadcast 50 to 100 kg/ha or drench 10 to 15 kg/ha around the basin. It is a soil conditioner, not a fertiliser and not a substitute for one, and it is not a fungicide or pesticide. Manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading.
Soil conditioner / supports soil biology
Seeding rates at a glance
| Species | Establishment method | Rate | Best fit |
|---|---|---|---|
| Pueraria javanica (PJ) | Broadcast | About 4 kg/ha sown alone (Tropical Forages) | Primary cover, open to lightly shaded coconut |
| Calopogonium mucunoides (CM) | Broadcast | Set on the quotation for your site | Pioneer on acidic or degraded plots |
| Centrosema pubescens (CP) | Broadcast | 3 to 5 kg/ha (Tropical Forages) | Older, partly shaded stands |
| Calopogonium caeruleum (CC) | Broadcast | 1 to 1.5 kg/ha with 5 to 7.5 kg/ha PJ (Tropical Forages) | Shaded closed-canopy estates, with CP |
| Mucuna bracteata (MB) | Transplanted seedlings, never broadcast | About 320 seedlings/ha from about 500 seeds, 75 g (MPOB TT No. 501); 680 seedlings/ha (Samedani et al. 2015) | Young or replanted land, high erosion risk |
| SoilBoost EA | Broadcast or drench | 50 to 100 kg/ha broadcast, 10 to 15 kg/ha drench | Soil conditioning alongside the legume cover |
Rates are published figures from the sources named, or are set on the quotation; adjust to your own site conditions.
PH-specific establishment timing
The Philippines runs four PAGASA climate types, and coconut covers all of them. Match legume establishment to the local rainfall pattern.
- Type I (pronounced wet and dry seasons, western Luzon, western Visayas): establish PJ or CM in May to June at the southwest monsoon onset so seed has consistent moisture while it establishes.
- Type II (no dry season, eastern Mindanao, eastern Visayas, Bicol): establish almost any month with a short planned dry spell for seedbed preparation, but avoid the heaviest October to January rainfall window for first establishment.
- Type III (short dry season, western Mindanao, central Visayas): establish from May into early July as rains stabilise.
- Type IV (rain year-round, eastern Mindanao, parts of Bicol): establish whenever a manageable clear-weather window is available; legume covers benefit estates here as much for organic matter as for moisture.
Eastern Visayas (Samar, Leyte) and Bicol coconut estates are in the Pacific-facing typhoon belt. A well-anchored, fully established legume cover protects exposed soil during high-rainfall events better than bare or weed-mulched ground.
Common challenges in Philippine coconut
- Long-cycle organic matter decline. Coconut stands often stay on the same site for decades without rotation. Legume cover plus periodic SoilBoost EA application can help rebuild soil organic matter and microbial activity.
- Dry-season moisture stress. December-to-April dry periods, longer in Type I and Type III climates, stress yield. A managed legume cover protects the soil surface; keep it off the palm basin and cut it back if it competes for water in long dry spells.
- Acidic Ultisols and old laterite soils. Calopogonium mucunoides is a strong pioneer on the most degraded acidic plots before introducing PJ or CP.
- Smallholder input costs. A well-established legume cover recycles nitrogen and organic matter. Legume cover contributes nitrogen; adjust your fertiliser programme only after soil and leaf analysis shows what the cover supplies on your block.
- Cogon and Imperata pressure on long-fallowed coconut land. Dense legume establishment is the primary weed-management lever.
Frequently asked questions
Which cover crop is best for Philippine coconut estates?
Pueraria javanica (PJ) is the classical choice for coconut intercropping; Tropical Forages gives about 4 kg/ha sown alone. On degraded or acidic plots, Calopogonium mucunoides (CM) establishes as a pioneer, with the rate set on the quotation for your site. On older shaded estates, Centrosema pubescens (CP, 3 to 5 kg/ha broadcast) and Calopogonium caeruleum (CC, 1 to 1.5 kg/ha sown with 5 to 7.5 kg/ha PJ), both rates from Tropical Forages, take over as the shade-tolerant successors.
How much nitrogen does a coconut cover crop actually contribute?
One study record: in a coconut-basin trial on laterite soil in Kerala, India, Thomas and Shantaram (1993) measured 28.45 kg of fresh green matter and 196.2 g of shoot nitrogen per basin for Pueraria (PJ), and 27.21 kg and 186.5 g per basin for Calopogonium mucunoides, with the tops harvested 120 days after sowing. These are per-basin figures from one site, not per-hectare or annual values. Legume cover contributes nitrogen; adjust your fertiliser programme only after soil and leaf analysis shows what the cover supplies on your block.
Is Mucuna bracteata broadcast like the other cover crops?
No. Mucuna bracteata is transplanted, never broadcast. It is established from nursery-raised seedlings. MPOB TT No. 501 (Hasnol Othman, Farawahida Mohamad Darus and Zulkifli Hashim, 2012) used about 320 seedlings per hectare, two per palm point, raised from about 500 seeds (75 g); Samedani et al. (2015) used 680 seedlings per hectare.
Will cover crops compete with coconut for water?
A legume cover acts as a living mulch over the interrow, but it also uses water. Keep the palm basin clear of the cover, and in long dry spells cut back or slash the cover if the palms show moisture stress. How the balance works out depends on rainfall, soil and the cover species, so watch soil moisture on your own blocks.
Do you supply seed to Quezon, Bicol, and Leyte / Samar coconut growers?
Yes. We supply buyers across the Philippines from Davao City. Orders are Ex Works (EXW) Tigatto, Davao City, unless the quotation states FOB or CIF for export. Delivery to Quezon, Bicol, Leyte, Samar or anywhere else in the Philippines can be arranged on request and at your cost: you may collect from our premises in Tigatto, send your own trucker or forwarder, or ask us to book a carrier, in which case the quotation states the delivery address and the delivery cost. Export shipments carry a phytosanitary certificate issued by the Bureau of Plant Industry (BPI); documents for inter-island shipments, pricing and delivery options are confirmed on the quotation.
Can SoilBoost EA be used on smallholder coconut farms?
Yes. SoilBoost EA is a humic soil conditioner (leonardite-derived, with about 0.45 percent sulphur and pH 3.84). Broadcast at 50 to 100 kg/ha or drench at 10 to 15 kg/ha around the palm basin. It supports soil biology and nutrient cycling alongside the legume cover and your existing fertiliser programme. It is a soil conditioner, not a fertiliser and not a substitute for one, and it is not a fungicide or pesticide. It is manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading, and supplied in the Philippines by Kudzu Seeds Trading.
Related pages
Request a Philippine coconut cover crop quotation
Send a quotation request with your crop, area and delivery point, or WhatsApp us for pricing, lot availability, and delivery options for your site. We reply within one business day (Philippine time).
Request a quotation WhatsApp Kudzu Seeds TradingAlso supplied: Kudzu RB Lure, a pheromone lure for monitoring and mass-trapping the coconut rhinoceros beetle (Oryctes rhinoceros), which coconut estates can use alongside a cover crop programme.
All Philippine plantation guides
Browse by region or by crop. Each guide covers Philippine-specific species and establishment notes, with published seeding rates where a source exists.
By region:
Crop-specific guides:
Kudzu Seeds Trading is the Philippines-based sister company of Chemiseed Sdn. Bhd. in Malaysia (chemiseed.com). SoilBoost EA is manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading.
Sources for the seeding and nitrogen figures: Tropical Forages, CIAT and ILRI (2020), tropicalforages.info; MPOB TT No. 501 (Hasnol Othman, Farawahida Mohamad Darus and Zulkifli Hashim, 2012); Samedani et al. (2015), International Journal of Agriculture and Biology 17(2): 251-260, CABI (PDF); Cheah, Zaharah and Aminuddin (2010), Oil Palm Bulletin 60: 22-27, MPOB (PDF); Thomas and Shantaram (1993), CORD 9(1): 34, doi:10.37833/cord.v9i01.265.
Last reviewed 10 October 2026.