The plant requires well drained fertile soils. Avoid clay soils as they may result in malformed bulbs. Soil Ph should be 5.5-6.8.flavour development of garlic herb is best in sunny weather. Deep land preparation is required to ensure adequate rooting depth. Individual cloves are used for growing of garlic herb which is carried out vegetatively. Bulbs for sowing from the previous crop should be stored at 10ºC and a relative humidity of 50-65%. Stored bulbs should be fumigated if mites are present and inspected periodically for storage rots.
Garlic herb growing is carried out on raised seed beds, on ridges at a spacing of 30cm between rows and 15-20cm between plants, giving a plant population of 150,000-200,000 per hectare. The cloves should be sown 2.5cm deep in well firmed soil. The seed clove requirement is about 300kg per acre or 750kg/ha.
Seed garlic is harvested while more mature since it is allowed to stay in the fields for a atleast six months consumption bulbs for consumption are harvested as early as four months. Planting garlic intended for consumption results to poor germination. There is need to take extra care to get seed garlic from reliable sources only. Some imported garlic bulbs are treated with growth inhibitors to prevent sprouting on the grocery helves and they cannot germinate.
It is advisable for starters to start with about 100kg of bulbs and do bulking for one season to get adequate high quality bulb seed. The crop responds well to organic manure and 20tons/ha can be ploughed into the soil before planting
Fertilizer requirements for growing the crop vary with soil fertility .The standard fertilizer rate of application is NPK is 150:55:40kg/ha applied as 1/3N:1P:1/5K. N and K topdressing should be applied 6-8 weeks after sowing and final N application at the beginning of bulb formation. The most common pests and diseases in growing garlic herb include purple blotch, downy mildew, rust, bulb rot, nematodes and onion thrips. Control measures include long crop rotations (4 years), Field hygiene, good drainage, removal and destruction of infected and crop debris, spraying suitable insecticides and fungicides. The crop matures 6-8 months after sowing, when leaf tops turn yellow or brown, then the leaves bend over and dries out. Dig the bulbs carefully to avoid damage. Light and sprouting bulbs should be discarded. Cure the bulbs in open air under shade for 8-10 days until the plants are thoroughly dry. Market or store the garlic herb bulbs. Dry storage of the bulbs for two months is sufficient to break dormancy. The length of crop growing period before garlic herb plants starts bulb formation determines yields which ranges between 12-15 tons/ha-more.Read also
Garlic/Bulb onion Farming e-manual
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