Cover Crop Seeding Rate Guide for the Philippines
Cover Crop Seeding Rate Guide for the Philippines
These rates are the values Kudzu Seeds Trading uses with growers across Mindanao, the Visayas, and Luzon. They are reconciled against the published agronomic literature (MPOB, Tropical Forages, and Philippine field studies) rather than the inflated 10 kg/ha figures that circulate on many supplier sites and cause growers to over-order seed. State the establishment method alongside any rate, because the right number depends on whether you are sowing a monoculture, a mixture, or transplanting.
Recommended seeding rates by species
| Species | Monoculture (broadcast) | In a mixture | Method note |
|---|---|---|---|
| Pueraria javanica (PJ) | 4 to 6 kg/ha | 2 to 4 kg/ha | General plantation cover; vigorous twiner |
| Calopogonium mucunoides (CM) | 4 to 6 kg/ha | 1 to 3 kg/ha | Fast early establishment; short-lived pioneer |
| Centrosema pubescens (CP) | 3 to 4.5 kg/ha | 1 to 2 kg/ha | Shade-tolerant; persists under canopy |
| Calopogonium caeruleum (CC) | 3 to 4.5 kg/ha | 0.5 to 1.5 kg/ha | Shade-tolerant, stoloniferous; slow start, persistent |
| Mucuna bracteata (MB) | Not broadcast | Transplanted | Polybag nursery, then transplant ~320 seedlings/ha; ~85 to 100 g seed/ha |
Sources: MPOB Oil Palm Bulletin and MPOB TT-501 (MB nursery establishment on peat, 320 seedlings/ha); Tropical Forages database (CSIRO, CIAT, ILRI); Philippine field studies on Calopogonium, Centrosema, and Pueraria. Rates assume good seedbed contact and adequate moisture; scarify or treat hard seed where germination testing indicates.
Standard plantation cover crop mixtures
Most plantation growers sow a legume mixture rather than a single species, so that a fast pioneer gives early ground cover while shade-tolerant species persist as the canopy closes. Two reliable Philippine and Southeast Asian mixtures:
| Mixture | Ratio | Total rate | Best for |
|---|---|---|---|
| PJ + CM + CP (equal parts) | 1:1:1 | 3 to 5 kg/ha | General oil palm, rubber, and tree crop establishment |
| PJ : CP : CC (MPOB conventional) | 4:3:1 | 8 kg/ha | Longer-term cover with strong shade persistence |
For aggressive weed suppression and the highest biomass, Mucuna bracteata is established separately by transplanting and is often used to under-plant young palms or trees rather than mixed into a broadcast blend.
Seeding rate calculator
Estimate the seed quantity for your area. Choose a species or mixture and enter your area in hectares.
This is a planning estimate using the mid-point of each recommended range. Final quantity depends on seedbed condition, season, germination percentage, and whether you are sowing pure or in a mixture. Kudzu Seeds Trading confirms the exact rate for your site with every quote.
How to establish a cover crop in the Philippines
Good establishment matters more than the exact rate. The steps that growers across Mindanao and the Visayas rely on:
- Prepare the ground. Clear and lightly cultivate the inter-row, remove competing weeds, and create a firm, fine seedbed for good seed-to-soil contact.
- Time it to the rains. Sow at the onset of the wet season so seedlings get reliable moisture during the first four to six weeks.
- Treat hard seed. Pueraria, Centrosema, and Calopogonium have hard seed coats; scarify or use a brief hot-water treatment where germination tests show low emergence.
- Sow at the right rate. Broadcast evenly at the rate above, then lightly rake or roll to cover the seed shallowly.
- Transplant Mucuna bracteata. Raise MB in polybags in a nursery and transplant at about 320 seedlings/ha once seedlings are established, rather than broadcasting.
- Manage early competition. Spot-weed for the first two to three months until the cover closes, then let it suppress weeds on its own.