Seed Co Limited, a public listed company incorporated in Zimbabwe and quoted on the Zimbabwe Stock Exchange, is the leading producer and marketer of certified crop seeds in Southern Africa.

Our maize varieties

Very Early Maturing Hybrids

  • SC 403 (Very Early, Drought and Streak Tolerance, and Wide Adaptability)
    SC 403 SC 403 is a very early white Maize Streak and Mottle Viruses tolerant hybrid, with a relatively short, flinty ear and excellent yield stability over a range of environments with relatively slow dry down rate. It has outstanding drought tolerance with very good synchronization of silks with pollen.

    In numerous trials in communal areas over several seasons, SC 403 has performed very well under drought conditions. On average, SC 403 has a higher yield potential over SC 401. SC 403 has hard, very dense grain and has outstanding tolerance to both Diplodia and Furasium cob rots. SC 403 is widely recommended for harsh conditions where yields of less than 6t/ha are expected. It is also recommended for irrigation schemes an early Maize Streak Virus tolerant hybrid is required.

    Where irrigation is available optimum plant population should be increased to the levels recommended for the given expected yield level.


  • SC 407 (The Combo- for Drought, Streak and Grey Leaf Spot Tolerance)
    SC 407 SC 407 is one of the highest yielding very early maturing white hybrids, and combines levels of Maize Streak and Mottle Viruses Tolerance, and good tolerance to Grey Leaf Spot (GLS). However, under heavy levels of GLS infection, this hybrid may need fungicide spray application to realize its full potential.

    Being a very early maturing white semi-flint hybrid, SC 407 has good pollen to silk synchronization that makes it suitable for dry conditions and could replace SC 403 in GLS susceptible areas where yield potential is good, but early harvesting is required. It has high adaptability and is drought tolerant.


  • SC 411 (Very Early, Disease Tolerance and High Yielder)
    SC 411 A very early maturing, highly adaptable drought tolerant, white dent hybrid similar to SC 403 in respect in respect to Grey Leaf Spot and Maize Streak and Mottle Viruses resistance levels, but slightly higher yielding. However, SC 411 is susceptible to Northern Corn Leaf Spot (NCLS) and has a moderate tolerance to Common Rust. Despite the ratings, a yield of 10t/ha has been achieved at Mpongwe in Zambia.

    SC 411 is well suited to marginal rainfall areas due to its very early maturity characteristics, but not recommended where NCLS is a threat.

Early Maturing Hybrids

  • SC 513 (Combines Excellent Yield and Grey Leaf Spot Tolerance, Wide Adaptation)
    SC 513 SC 513 is a white dent early maturity hybrid with a very good tolerance to Grey Leaf Spot and very high yield potential for an early hybrid than SC 501. It has a relatively high ear placement and is slightly susceptible to root lodging when planted at high population.

    Consequently, final plant population in excess of 44000 plants/ha should be avoided. It has good resistance to foliar diseases but is only moderately resistant to cob rots. SC 513 is recommended for the higher potential areas where an early hybrid is required in the variety package. SC 513 has wide adaptability and good heat and drought stress tolerance.

Medium Maturing Hybrids

  • SC 627 (Grey Leaf Spot, Streak Tolerance and Wide Adaptability)
    SC 627 SC 627 is a white, semi-flint medium maturity hybrid, with Grey Leaf Spot (GLS) tolerance similar to SC 709 and very good Maize Streak Virus tolerance. The average yield potential of SC 627 is almost identical to the old, well-known hybrid, and about 5% higher than SC 621. SC 627 has a high ear placement and is fairly prolific under favorable conditions.

    Grain quality is very good, being flintier than other hybrids of similar maturity. SC 627 has good yield stability and is recommended over a wide of yield levels, particularly in areas where GLS or Maize Streak Virus incidence is high. SC 627 has good heat and drought stress tolerance and is widely adaptable. SC 627 has shown some isolated sensitivity to Boron deficiency, and where this is anticipated, a Boronated compound fertilizer should be used.

    This hybrid has some susceptibility to cob rots and so where ear rots are not known to exist in plant residues or in favorable environments for these diseases, SC 621 would be a better choice if a medium maturing hybrid is required.


  • SC 633 (Grey Leaf Spot and Streak Tolerance)
    SC 633 SC 633 is a medium maturity white dent hybrid with excellent and stable grain yield performance. SC 633 also has excellent resistance to Maize Streak Virus and good tolerance to Grey Leaf Spot.

    SC 633 is suited to most environments where there is a high yield potential.

    The husk cover of SC 633 is loose, therefore enabling relatively quick dry down.


  • SC 635 (Grey Leaf Spot and Streak Tolerance)
    SC 635 A white, semi-dent, medium maturity hybrid with good Maize Streak and Mottle Viruses, Grey Leaf Spot Common Rust tolerance levels. SC 635 has moderate susceptibility to Northern Corn Leaf Spot (NCLS) in Northern Zambia. With a 12% superior yield advantage over SC 627, across regional trials, and being widely adapted, this hybrid complements SC 627.

    High population may cause stalk lodging, but strong roots make this hybrid better than SC 627 in this respect. SC 635 is recommended for high potential areas such as Region 11B in Zimbabwe where diseases such as NCLS disease are not a threat.


  • SC 637 (Grey Leaf Spot and Streak Tolerance)
    SC 637 This white semi-flint, medium maturing maize hybrid offers higher yields of 13% and 19% over SC 709 and SC 627, respectively. Having a lower cob placement, there is little risk of lodging with this hybrid. Disease tolerance is very good for Maize Streak and Mottle Viruses, with moderate tolerance to Northern Corn Leaf Spot, usually found in Northern Corn Leaf Spot, usually found in Northern Zambia.

    SC 637 is recommended for Region 11 B (Zimbabwe), Region 111 (Zambia), higher rainfall areas of Malawi and the transitions zones of East Africa.

Late Maturing Hybrids

  • SC 709 (Grey Leaf Spot Tolerance, High Grain and Silage Yielder)
    SC 709 A late white dent hybrid similar in maturity and stature to SR 52, but with improved stability, standability and excellent Grey Leaf Spot (GLS) tolerance. This hybrid is therefore recommended for high potential conditions, where GLS may occur. SC709 has been highest yielding white hybrid in trials where GLS infection is heavy. SC 709 has shown the ability to produce yields in excess of 10 t/ha, generally without the need for chemical control of GLS.

    An excellent choice of planned yields above 6t/ha. SC 709 may present grain quality problems where ear rots are known to exist in plant residues or in favorable environments for these diseases where management of field preparation is important. However, this variety is susceptible to the Maize Streak and Mottle Viruses. SC 709 is an ideal choice of silage and has yielded in excess of 13t/ha of dry matter (65t/ha bulk weight).


  • SC 719 (Grey Leaf Spot and Streak Tolerance, High Grain and Silage Yielder)
    SC 719 SC 719 is a late maturing, semi-dent, white hybrid with very good Grey Leaf Spot, Maize Streak and Mottle Viruses tolerance, along with good resistance to Northern Corn Leaf Spot and Phaeosphaeria Leaf Spot diseases. For the maturity group, SC 719 has good heat and drought stress tolerance making it an optional variety choice under dry land maize farming.

    Despite being taller than most 7 and 6 series hybrids, SC 719 lodging exhibits very good resistance to both stalk root lodging. Average yield performance shows a 20% advantage over SC 709 and 9% above SC 713 which makes this hybrid an important consideration for Region ii B in Zimbabwe, Region iii in Zambia, the higher rainfall environments of Malawi, along with the transitional highland zones of East Africa.

    This hybrid exhibits some ear rots where plant residue exists, so good rotation practice is recommended where SC 719 is grown. The SC 719 tall and large plant structure, late maturity, excellent lodging tolerance, early vigor and high grain yield makes it an ideal choice for silage.


  • SC 721 (Grey Leaf Spot and Streak Tolerance)
    SC 721 A tall statured combo-type long season hybrid which combines excellent grain yields with good tolerance to Leaf Blight, cob diseases, Maize Streak and Mottle Viruses, and Grey Leaf Spot (GLS) while still offering decent stalk standability. This is a must grow variety for the serious farmer who wants high crop productivity while still benefiting from a reduced burden of disease control costs. SC 721 is recommended where high yield potential conditions prevail and leaf blight, GLS, and Maize Streak Virus are major disease threats.

    Having given consistently high crop yields on test sites across Malawi, Zambia, Zimbabwe, the hybrid has great potential in these countries and in East Africa. Given its large frame, SC 721 is an obvious choice for ensiling. SC 721 can also be grown for green mealies where a white variety is acceptable in this type of market.

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