Exporting corn silage from Pakistan: paperwork, containers and terms

What is actually being shipped

Whole-crop maize, cut at the milk-line stage, chopped, compressed into bales of roughly 60-70 kg and wrapped in multi-layer UV-resistant film. The wrap is not packaging in the retail sense. It is the preservation system. Once the bale is sealed, the residual oxygen is consumed, lactic acid bacteria drop the pH, and the forage is stable for as long as the seal holds. Puncture the film and that bale starts spoiling within days.

That single fact drives most of the export handling decisions further down this page.

For reference, Feedipedia tabulates maize silage across dry matter bands and puts the harvest recommendation at 30-35% DM; Penn State Extension gives 32-38% DM as the target across the one-third to two-thirds milk line window. Across the published bands, crude protein runs 5-10% of DM, starch 18-37% of DM, NDF 43.6-49.3% and ash 3.6-4.8%. In the 30-35% DM band specifically, Feedipedia's mean figures are 6.9% crude protein, 44.3% NDF, 23.3% ADF, 29.1% starch, 3.7% ash and 10.8 MJ/kg DM metabolisable energy (Feedipedia; Penn State Extension). Well-fermented maize silage is normally quoted below pH 4.2. Those are industry reference figures, not our results. Figures for our own crop: your measured DM %, pH, starch %, NDF %, ash %, and the name and date of the laboratory report they come from, if and when you have an independent analysis.

Tariff classification: which HS code

The Harmonized System is standardised to six digits across all WCO member countries; national tariffs then extend those six digits with their own subdivisions (ITA). Pakistan's export declaration carries a national code built on the same first six digits, and your destination will extend them a different way.

The relevant heading family for forage is 1214. The heading text reads:

Rutabagas (swedes), mangolds, fodder roots, hay, alfalfa (lucerne), clover, sainfoin, forage kale, lupines, vetches and similar forage products, whether or not in the form of pellets

with two subheadings:

(Heading text as published in the US Harmonized Tariff Schedule, Chapter 12; the six-digit structure is the same everywhere.)

Wrapped whole-crop maize silage is normally presented under 1214.90, because heading 1214 is drafted to catch forage products by function — "and similar forage products" — rather than by botanical species. Some administrations have instead looked at heading 2308 (vegetable materials of a kind used in animal feeding, not elsewhere specified) for ensiled material.

We are not customs brokers and we do not give binding classification advice. Confirm the tariff line with your own broker in the destination country before you contract. Where the difference changes duty, permit requirements or SPS controls, apply for an advance or binding tariff ruling from your customs authority — it takes weeks, not days, so start it early.

The Pakistani export paperwork, in order

Pakistan runs trade documentation through the Pakistan Single Window (PSW), described by the operator as "an Integrated Digital Platform that allows parties involved in trade to lodge standardized information and documents with a single-entry point to fulfill all import, export, and transit-related regulatory requirements." Other government agencies — including the Department of Plant Protection — process "licenses, permits, certificates, release orders and other documents" electronically inside it, and the old paper Form-E / EFE step has been absorbed into the platform (PSW).

In practice, a container of silage leaving Karachi carries this document set:

Phytosanitary certification

A phytosanitary certificate is issued by the exporting country's National Plant Protection Organisation and states that the consignment has been inspected and conforms to the importing country's plant health requirements. In Pakistan that is the Department of Plant Protection, working through PSW.

The point buyers most often miss: the certificate has to say what your authority wants it to say. Under the WTO SPS Agreement, every country retains "the sovereign right of any government to provide the level of health protection it deems appropriate," and may set requirements above international norms with scientific justification (WTO). Those requirements normally surface as an import permit listing specific additional declarations.

So the sequence is:

1. You obtain the import permit or written import conditions from your own plant health authority.
2. You send us the exact declaration wording it requires.
3. DPP inspects the consignment and issues a certificate carrying that wording.
4. The container is sealed.

Doing it in any other order produces a certificate that reads correctly to a Pakistani inspector and gets the container held at your end. Inspection happens on the physical goods, so it must be scheduled before stuffing and sealing, not after.

Fumigation

Fumigation is not a Pakistani requirement. It is a requirement some destinations impose, and it appears in your import permit or not at all.

Where it is demanded, understand what it can and cannot do here. A wrapped silage bale is a deliberately sealed anaerobic package; the film is what preserves the forage. A fumigant applied to the outside of an intact wrap does not penetrate it, and breaching the wrap to let it in destroys the product. In practice a treatment endorsement on this cargo applies to the container and to wood packaging, and it has to be arranged before the doors close.

If the underlying concern is wood pests rather than the forage itself, the usual answer is ISPM 15 compliance on pallets and dunnage: wood debarked, heat treated to "56°C for at least 30 continuous minutes throughout the entire profile of the wood, including its core," and carrying the ISPM 15 mark. Material with a legible mark "does not need phytosanitary or treatment certificates" (UK guidance on wood packaging). Ask your broker whether an ISPM 15 declaration satisfies the requirement before you pay for a fumigation that achieves nothing.

Certificate of origin

Pakistan splits this. TDAP issues certificates of origin for preferential exports under bilateral, regional and GSP arrangements; chambers of commerce issue them for non-preferential trade under MFN tariffs. TDAP has moved to electronic certificates of origin applied for, processed and printed online, carrying QR codes and digital signatures (TDAP).

Whether a preferential certificate is available for your market depends on which agreement is in force at the time of shipment. Confirm that with TDAP or your broker rather than assuming — it changes.

Container mathematics

This is where most import costings go wrong.

Two ceilings, and only one of them binds

A 40ft high cube container gives you roughly 76 m³ of internal volume, a maximum gross of around 30,480 kg, tare of roughly 3,900-4,150 kg, and therefore a payload in the region of 26,000-26,500 kg, subject to carrier and route restrictions (iContainers; DSV container specifications). Those are generic figures and they vary: DSV lists 40ft dry containers at 3,750 kg tare with a 27,600 kg maximum payload, which implies a plated gross above 30,480 kg. The authoritative number for any individual box is stamped on its CSC safety approval plate. Read the plate on the container your line actually supplies, and check it against the payload your carrier and route will accept.

The break-even density is simply payload divided by usable volume:

• On nominal volume: 26,000 kg ÷ 76 m³ ≈ 342 kg/m³
• On a realistic 85% fill after stacking pattern, dunnage and door clearance: 26,000 kg ÷ 64.6 m³ ≈ 402 kg/m³

Cargo denser than that hits the weight limit first — it "weights out". Cargo lighter than that fills the space first — it "cubes out". Compressed, wrapped forage bales are typically well above those figures, which is why silage containers almost always weight out. You pay for a full 26 tonnes and leave air in the box, and no amount of clever stacking recovers it.

Bale count then falls out of the weight limit, not the volume:

26,000 kg payload ÷ 65 kg per bale = 400 bales

That is arithmetic on two stated assumptions — a 26,000 kg payload and a 65 kg bale, the midpoint of our 60-70 kg range — not a quotation. Change either assumption and the count moves. Our loaded figure is bales per 40ft HC container, and the corresponding net and gross weights, and it depends on our bale dimensions of bale length x width x height, or diameter x length.

Dry matter is what you are actually paying freight on

Freight is charged on a box, and the box is capped by weight. So the only variable that changes how much feed you land per container is dry matter percentage.

At a fixed 26,000 kg payload:

A container at 35% DM delivers about 25% more dry matter than one at 28% DM, for identical freight, identical port charges and identical handling. On a landed-cost-per-tonne-of-DM basis that difference usually swamps the difference in unit price between suppliers.

The conversion is straightforward:

Price per tonne DM = price per tonne as-fed ÷ DM fraction

USD 100 per tonne as-fed at 30% DM is USD 333 per tonne of dry matter. The same USD 100 at 35% DM is USD 286. Always ask for quotes on a stated DM basis, and put the basis in the contract. (Pakistani domestic quotes are often given per 40 kg maund or per tonne as-fed; export quotes should be per tonne with the DM basis written down.)

Higher is not infinitely better. Published guidance puts optimal maize silage harvest at 30-35% DM, and notes that above roughly 37% DM the grain needs processing to avoid losing digestibility, while material harvested below 30% DM is bulky and depresses intake (Feedipedia). Very dry crop also compacts poorly and ferments badly. There is a window, and a supplier quoting an implausibly high DM is telling you something about their harvest timing, not selling you a bargain.

Weight compliance

Two traps:

• VGM. Under the SOLAS container weight rules the shipper must declare a verified gross mass to the carrier before the box is loaded. No VGM, no loading. That is the shipper's obligation, but a mismatch between VGM, packing list and bill of lading creates discrepancies under a letter of credit, so the numbers must be reconciled before documents are presented.
• Road limits at your end. A container that is legal at sea can be illegal on the road at destination. If your inland regulations cap gross combination weight below what a 26-tonne payload implies, tell us before loading and we will load to your limit. Restuffing at destination costs more than the tonnes you saved.

Incoterms: who does what

Incoterms 2020 comprises eleven rules allocating cost, risk and obligation between seller and buyer, with all costs consolidated into articles A9/B9 of each rule (ICC).

Three practical points.

Avoid EXW for cross-border sales. It puts Pakistani export clearance on a foreign buyer who normally cannot file a Pakistani goods declaration. If you genuinely want to control the freight, use FCA or FOB instead.

FOB, CFR and CIF are maritime rules. ICC reserves FOB "for use in maritime trade". They fit containerised cargo awkwardly, because the seller hands the box over at a terminal days before it goes on board while still carrying risk until it does. Where that gap matters to you, FCA/CPT/CIP are the cleaner containerised equivalents.

CIF insurance is minimum cover by default. Incoterms 2020 sets Institute Cargo Clauses (C) as the CIF default. That is a named-perils cover, not all-risks. If you want ICC (A), say so in the contract and expect to pay for it.

The Incoterms we can offer are which Incoterms you offer — e.g. EXW farm, FOB Karachi, CFR Jebel Ali, CIF Jebel Ali.

Payment terms, and what a first order looks like

Standard trade payment methods run along a risk spectrum: cash in advance (minimal exporter risk, high importer risk), letters of credit, documentary collections, open account (highest exporter risk), and consignment (ITA, Methods of Payment). Agricultural exports out of Pakistan cluster at the secure end, and there are reasons for that rather than mistrust of any particular buyer.

Silage is a consignment-specific product. It is cut for an order, baled to a spec, and once it is on the water it has no alternative home. A container refused at destination cannot be economically re-sold into a third market and cannot be returned. So expect one of:

• Advance TT in full. Common on first, smaller orders. Simple, cheap, no bank fees to speak of.
• Part advance plus balance. Typically a deposit on order confirmation, balance against scanned shipping documents or on the bill of lading date, with originals released on receipt. This is the usual compromise on a first commercial-scale order.
• Irrevocable letter of credit at sight, subject to UCP 600. Appropriate above a certain order value. Confirmed by a bank in your country if you want the issuing-bank risk covered, and confirmation costs money.
• Documentary collection (D/P). Less protection for both sides than an LC and not usually where a new relationship starts.

Our terms are your payment terms — e.g. X% advance on order confirmation, balance against documents; LC terms and minimum value above which you accept LC.

If you go the LC route, three things save trouble:

1. Name only documents that can actually be issued. An LC calling for a certificate that DPP does not issue, or wording no Pakistani authority will sign, is an LC that cannot be drawn on.
2. Agree a quantity and amount tolerance. Bale weights vary within a tolerance; a fixed bale count with no leeway generates discrepancies over nothing. Set the tolerance in the contract and mirror it in the LC.
3. Allow realistic document presentation time relative to the Karachi–Gulf sailing. On a short sea leg the vessel can arrive before the original documents do. Either use a telex release or build the timing in.

Karachi and the run to the Gulf

Pakistan's container trade moves through two complexes in Karachi: the Port of Karachi and Port Qasim. The Port of Karachi alone handles roughly 60% of national cargo, with terminals including KICT, SAPT and KGTL across its wharves (Port of Karachi).

Jebel Ali is the regional discharge hub — around 13.7 million TEU handled in 2021 across 67 berths, and the largest facility in the Middle East (Jebel Ali Port). Silage exported from Pakistan ships from Karachi, typically to Jebel Ali. It is one of the shortest deep-sea legs available to a Pakistani exporter, with frequent direct services and heavy transhipment capacity behind it. Actual port-to-port transit depends on the service, the rotation and whether the box is direct or transhipped, so take the figure from the carrier at the time of booking rather than from a website. once your export service is set, the transit time and the carriers you book on Karachi–Jebel Ali.

The longer and less predictable leg is inland. Our farms are in Punjab and the port is in Sindh, which is a long road haul before the cargo ever sees a crane: your typical farm-to-port road transit time from Punjab to Karachi, and how many days before vessel cut-off you would load. That leg, not the sea leg, is where schedule risk lives — road conditions, seasonal congestion and monsoon disruption around Karachi in mid-year all bite there first.

Loading practice worth insisting on

Because the wrap is the preservation system:

• Bales handled with clamps, slings or bale spikes designed for wrapped bales — not bare forklift tines into the film.
• Container inspected clean, dry and odour-free, with no residue from a previous chemical cargo.
• Stacking pattern that does not crush the lower courses out of shape.
• Wrap integrity checked at both ends, and any damaged bale identified on arrival rather than argued about later.

Ask any supplier how they load. The answer tells you whether they have shipped before.

Quality documentation to ask for

Whatever the origin, ask for the same things:

• Dry matter and pH, with the lab and sampling date.
• Ash content — elevated ash usually means soil in the crop, which means careless harvesting.
• Starch and NDF, which is where the feeding value sits.
• Mycotoxin screening. As a reference point for how tight markets can be, EU feed legislation sets a maximum aflatoxin B1 level of 0.02 mg/kg in feed materials, 0.01 mg/kg in complementary and complete feed generally, and 0.005 mg/kg in compound feed for dairy cattle and calves, dairy sheep and lambs, dairy goats and kids, piglets and young poultry animals — all relative to a feed with 12% moisture content (Directive 2002/32/EC, consolidated). GCC markets apply GSO standards; confirm the limit that applies to you with your own authority, because it is your import that gets tested.

For our own crop: confirm whether you commission independent laboratory analysis and on what basis — per lot, per season or on request — and attach the most recent report with lab name, date and sample reference.

Ordering from us

We breed our own hybrid genetics and inbred lines, grow on our own farms in Punjab, harvest at milk line, and chop, bale and wrap ourselves. That means one chain of custody from seed to sealed bale, and one party answerable for the specification. We supply the domestic Pakistani market today and are set up to serve export buyers on the terms described above.

• Export status: which markets you currently ship to, if any, and whether an export buyer would be your first — say it straight, buyers check
• Minimum order: your MOQ, stated in containers or tonnes
• Lead time from confirmed order to loading: your lead time, and whether it varies by season
• Bales per 40ft HC: bales per container and net weight
• Incoterms offered: list
• Payment terms: list
• Harvest and shipping windows: months when you harvest and can load

Send us your destination port, the volume you need, your import permit conditions if you already have them, and your target DM basis. We will come back with a specification, a loaded weight, and a price on the Incoterm you want.

WhatsApp: +92 310 4603311 Email: [email protected] Head office: 52 A3 Johar Town, Lahore. Highlight Research Farm, Bahawalnagar Road, Arifwala 57450.

Sources

• Pakistan Single Window — https://www.psw.gov.pk/
• Trade Development Authority of Pakistan, certificate of origin — https://tdap.gov.pk/origin-cert/
• WTO, Understanding the SPS Agreement — https://www.wto.org/english/tratop_e/sps_e/spsund_e.htm
• UK Government, wood packaging material for import and export (ISPM 15) — https://www.gov.uk/guidance/wood-packaging-material-for-import-and-export
• US Harmonized Tariff Schedule, Chapter 12 (heading 1214) — https://hts.usitc.gov/
• International Trade Administration, Harmonized System codes — https://www.trade.gov/harmonized-system-hs-codes
• International Trade Administration, Methods of Payment — https://www.trade.gov/methods-payment
• ICC, Incoterms 2020 — https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/
• DSV, dry container dimensions — https://www.dsv.com/en/our-solutions/modes-of-transport/sea-freight/shipping-container-dimensions/dry-container
• iContainers, 40ft high cube container — https://www.icontainers.com/help/40-foot-high-cube-container/
• Feedipedia, maize silage — https://www.feedipedia.org/node/13883
• Penn State Extension, corn silage production and management — https://extension.psu.edu/corn-silage-production-and-management
• Directive 2002/32/EC on undesirable substances in animal feed (consolidated) — https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A02002L0032-20191128
• Port of Karachi — https://en.wikipedia.org/wiki/Port_of_Karachi
• Jebel Ali Port — https://en.wikipedia.org/wiki/Jebel_Ali_Port
• International Trade Administration, Pakistan import requirements and documentation — https://www.trade.gov/country-commercial-guides/pakistan-import-requirements-and-documentation