ginger

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manojsinghchandel

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Ginger Cultivation

Planting material
Ginger rhizomes are used for planting. For selection and preservation of seeds, adopt the following methods:

Mark healthy and disease free plants in the field when the crop is 6-8 months old and still green. Select best rhizomes free from pest and disease from the marked plants. Handle seed rhizomes carefully to avoid damage to buds. Soak the selected rhizomes for 30 minutes in a solution of mancozeb and malathion to give terminal concentration of 0.3% for the former and 0.1% for the latter. Dry the treated rhizomes in shade by spreading on the floor. Store the treated rhizomes in pits dug under shade, the floor of which is lined with sand or saw dust. It is advisable to spread layers of leaves of Glycosmis pentaphylla (panal). Cover the pits with coconut fronds.

Examine the stored rhizomes at monthly intervals and remove the rhizomes that show signs of rotting. This will help to keep the inoculum level low. Provide one or two holes for better aeration. Treat the seed rhizomes similarly before planting also.


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Varieties

Dry ginger: Maran, Wayanad, Manantoddy, Himachal, Valluvanad, Kuruppampady, IISR-Varada, IISR-Rejatha and IISR-Mahima
Green ginger: Rio-De-Janeiro, China, Wayanad Local and Tafengiya

Rio-De-Janeiro is preferable for extraction of oleoresin

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SeedsAndCultivation

Preparation of land
Clear the field during February-March and burn the weeds, stubbles, roots etc. in situ. Prepare the land by ploughing or digging. Prepare beds of convenient length (across the slope where the land is undulating), 1 m wide, 25 cm high with 40 cm spacing between the beds. Provide drainage channels, one for every 25 beds on flat lands.
Season and method of planting
The best time for planting ginger is during the first fortnight of April, after receipt of pre-monsoon showers. For irrigated ginger, the best-suited time for planting is middle of February (for vegetable ginger).
Plant rhizome bits of 15 g weight in small pits at a spacing of 20 x 20 cm to 25 x 25 cm and at a depth of 4-5 cm with at least one viable healthy bud facing upwards. Adopt a seed rate of 1500 kg/ha.
Mulching
Immediately after planting, mulch the beds thickly with green leaves @ 15 t/ha. Repeat mulching with green leaves twice @ 7.5 t/ha first 44-60 days and second 90-120 days after planting. Grow green manure crops like daincha and sunn hemp in the interspaces of beds, along with ginger and harvest the green manure crop during second mulching of ginger beds.


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WaterManagement

NutrientManagement

Manuring
Apply manures and fertilizers at the following rates.


FYM 30 t/ha
N:p2O5:K2O 75:50:50: kg/ha/year

Full dose of P2O5 and 50% of K2O may be applied as basal. Half the quantity of N may be applied 60 days after planting. The remaining quantity of N and K2O may be applied 120 days after planting.

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WeedManagement

Aftercultivation
Remove weeds by hand-weeding before each mulching. Repeat weeding according to weed growth during the fifth and sixth month after planting. Earth up the crop during the first mulching and avoid water stagnation.


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PestManagement

Plant protection
1. For control of shoot borer spray dimethoate or quinalphos at 0.05%
2. For control of rhizome rot adopt the following measures:
a. Select sites having proper drainage.
b. Select seed rhizomes from disease free areas.
c. Treat seed rhizomes with 0.3% mancozeb.
d. When incidence of rhizome rot is noted in the field, dig out the affected plants and drench the beds with cheshunt compound or 1% Bordeaux mixture or 0.3% mancozeb.
e. Inoculation with native arbuscular mycorrhiza, Trichoderma and Pseudomonas fluorescens at the time of planting is recommended as a biocontrol measure.
3. For controlling the leaf spot disease, 1% Bordeaux mixture, 0.3% mancozeb or 0.2% thiram may be sprayed.
4. For control of nematode in endemic area, apply neem cake @ 1 t/ha at planting and carbofuran 1 kg ai/ha at 45 DAP.


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DiseaseManagement
Harvesting

Harvesting and processing
For vegetable ginger, the crop can be harvested from sixth month onwards. For dry ginger, harvest the crop between 245-260 days. After harvest, the fibrous roots attached to the rhizomes are trimmed off and soil is removed by washing. Rhizomes are soaked in water overnight and then cleaned. The skin is removed by scrapping with sharp bamboo splits or such other materials. Never use metallic substances since they will discolour the rhizomes. After scrapping, the rhizomes are sun-dried for a week with frequent turnings. They are again well rubbed by hand to remove any outer skin. This is the unbleached ginger of commerce. The peeled rhizomes are repeatedly immersed in lime solution (2%) and allowed to dry in the sun for 10 days while rhizomes receive a uniform coating of lime. This is the bleached ginger of commerce.

Regds
 

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