Yellow and White Maize Hybrids

Yellow Maize Hybrids:

Medium-fast:

IMP 52-12, IMP 52-12R and IMP 52-12BR

This range of hybrids is well adapted to the eastern Highveld and KwaZulu-Natal. The hybrids usually sprout very little and possess excellent grain qualities. The range shows good tolerance to cob and leaf diseases. Agricol recommends this range as part of the producer’s main planting in the eastern production areas. IMP 52-12 performed very well in ARC trials over the past two years. The range offers the producer the option of conventional, tolerant to glyphosate herbicides, and stalk borer protection.

Agronomic Characteristics:

Relative amount of days to 50% flowering – Warmer areas	61
Relative amount of days to 50% flowering – Cooler areas	73
Relative amount of heat units required for 50% flowering	710
Relative amount of days to maturity – Warmer areas	119
Relative amount of days to maturity – Cooler areas	135
Characteristic rating:
Prolificy	6
Drydown rate	3
Standabillity	2
Productive tillers	4
Disease tolerance:
Northern leaf blight	3
Gray leaf spot	3
Rust	3
Maize streak virus	3
Diplodia head rot	2

Adapted areas	Eastern Highveld Eastern parts of the Free State KwaZulu-Natal

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IMP 51-22BR

This range of hybrids perform well in the western production areas. Lower plant populations are recommended due to the hybrid’s good multi-cob and productive sprout-forming traits.

The range offers the benefit of rapid grain drying, good standing ability and a good ability to withstand drought and heat.

Agronomic Characteristics:

Relative amount of days to 50% flowering – Warmer areas	61
Relative amount of days to 50% flowering – Cooler areas	73
Relative amount of heat units required for 50% flowering	715
Relative amount of days to maturity – Warmer areas	119
Relative amount of days to maturity – Cooler areas	135
Characteristic rating:
Prolificy	3
Drydown rate	2
Standabillity	3
Productive tillers	2
Disease tolerance:
Northern leaf blight	5
Gray leaf spot	5
Rust	4
Maize streak virus	4
Diplodia head rot	3

Adapted areas	North West Western parts of the Free State

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Medium:

Sc 608

This hybrid is well adapted for the western and eastern production areas. Sc 608 delivers above-average grain yields and offers good resistance to northern leaf blight and grey leaf spot. The hybrid possesses excellent silage characteristics due to slower grain drying, lush growth and a high grain component. Sc 608 is also strongly multi-cobbed and usually produces very few sprouts. In the western areas silage can be cut after approximately 110-115 days and in the easterly areas after 125-135 days.

Agronomic Characteristics:

Relative amount of days to 50% flowering – Warmer areas	65
Relative amount of days to 50% flowering – Cooler areas	78
Relative amount of heat units required for 50% flowering	735
Relative amount of days to maturity – Warmer areas	127
Relative amount of days to maturity – Cooler areas	150
Characteristic rating:
Prolificy	2
Drydown rate	7
Standabillity	2
Productive tillers	8
Disease tolerance:
Northern leaf blight	1
Gray leaf spot	1
Rust	1
Maize streak virus	2
Diplodia head rot	2

Adapted areas	Whole production area

SEE 1 AS EXCELLENT AND 9 AS POOR

White Maize Hybrids:

Medium-fast:

IMP 52-11R

This range offers the benefit of protection against stalk borer or tolerance to glyphosate herbicides. The IMP 52-11 range is well adapted for the western production areas in the eastern Highveld. The hybrids perform very well under irrigation and drying takes place quickly. The range boasts good grain quality and a high bushel weight. IMP 52-11R performed exceptionally well in the 2014 ARC trials and are recommended as part of the producer’s main planting.

Agronomic Characteristics:

Relative amount of days to 50% flowering – Warmer areas	62
Relative amount of days to 50% flowering – Cooler areas	74
Relative amount of heat units required for 50% flowering	720
Relative amount of days to maturity – Warmer areas	124
Relative amount of days to maturity – Cooler areas	143
Characteristic rating:
Prolificy	4
Drydown rate	3
Standabillity	2
Productive tillers	3
Disease tolerance:
Northern leaf blight	4
Gray leaf spot	4
Rust	3
Maize streak virus	3
Diplodia head rot	3

Adapted areas	North West Free State Eastern Highveld KwaZulu-Natal

SEE 1 AS EXCELLENT AND 9 AS POOR

Medium:

IMP 53-49B, IMP 53-49R and IMP 53-49BR

This strongly multi-cobbed hybrid is well adapted for lower plant populations in the western production areas. IMP 53-49B delivered top yields during Agricol and ARC trials in 2014. The hybrid is available with technology protecting against stalk borer and is recommended as a main planting in North-West and in the western parts of the Free State.

Agronomic Characteristics:

Relative amount of days to 50% flowering – Warmer areas	65
Relative amount of days to 50% flowering – Cooler areas	78
Relative amount of heat units required for 50% flowering	735
Relative amount of days to maturity – Warmer areas	127
Relative amount of days to maturity – Cooler areas	150
Characteristic rating:
Prolificy	2
Drydown rate	4
Standabillity	2
Productive tillers	3
Disease tolerance:
Northern leaf blight	2
Gray leaf spot	3
Rust	3
Maize streak virus	3
Diplodia head rot	3

Adapted areas	North West Free State Eastern Highveld (silage) KwaZulu-Natal (silage)

SEE 1 AS EXCELLENT AND 9 AS POOR

PLANT POPULATION PER HECTARE (‘000s)

MATURITY	HYBRID	WESTERN FREE STATE	EASTERN FREE STATE	NORTH WEST	AVERAGE EASTERN PARTS	COLD EASTERN PARTS	KZN	NORTHERN CAPE
MEDIUM-EARLY	IMP 52-12 range	/	30-40	/	40-55	45-60	45-60	65-80
MEDIUM-EARLY	IMP 51-22B	18-28	25-35	16-26	/	/	/	65-80
MEDIUM-EARLY	IMP 52-11B	18-28	25-40	16-26	35-45	40-50	40-50	/
MEDIUM-EARLY	IMP 52-11R	18-28	25-40	16-26	35-45	40-50	40-50	/
MEDIUM	IMP 53-49 range	18-28	25-35	16-26	30-40	40-45	45-45	/
MEDIUM	Sc 608	18-28	25-35	16-26	35-45	40-50	45-50	/