Bajra is also known as “Pearl Millet”. Bajra is a coarse grain and considered to be poor man’s staple nourishment and suitable to cultivate in dry areas. It is warm and annual plant.
Health Benefits of Bajra –
Some of the health benefits of bajra are as follows-
Season-
States-
Major Bajra Producing states are Rajasthan (85%) followed by Uttar Pradesh, Gujarat, Haryana & Maharashtra.
Bajra can be grown in variety of soil. However, it thrives best in black cotton soil, sandy loam soil having good drainage. This crop does not prefer acidic & water logging soils. pH of soil should be 6.5 to 7.5.
Field Preparation-
Crop needs very fine tilth because seeds are too small. 2-3 harrowing followed by a ploughing is required to make the soil to the fine tilth. Any weeds should be destroyed during the field preparation to accommodate proper sowing and distribution of seed at an appropriate depth.
Spacing –
Seed Rate:
Seed Treatment-
Seed treatment of Agrosan or Thiram can be used @3gm per kg of seeds to avoid seed borne disease.
Bajra grows well in dry & warm climatic conditions and as it is drought-tolerant crop hence, it requires low annual rainfall ranging between 40-50 cm. The ideal temperature for Bajra cultivation is between 20o-30o C.
Application of 10-15 tonnes of farm yard manure or compost per hectare is required for Bajra cultivation. 90-100 kg of Nitrogen, 50-60 kg of Phosphorus and 50-50 kg of Potassium is required for Hybrid Bajra.
Fertilizer should be applied in split doses. At the time of sowing, full phosphorous and potash and half of the nitrogen should be added as basal application. 1/4th nitrogen should be added after 30 and 60 days after sowing.
Managing weeds in Bajra fields is essential to ensure optimum growth and yield. Here, are some methods for weed management in Bajra Cultivation.
1. Green Ear Disease-
Causal Organism- Sclerospora graminicola
Symptoms- It is a fungal disease. Two stages of the symptoms of the disease have been recorded: The Downy Mildew stage prominent on the leaves and the green ear stage affecting the inflorescence. The inflorescence of infected plants gets completely or partially malformed with florets converted into leafy structure, giving the typical symptom of green ear.
Plants appear sick, pale yellow in colour. Even Young plants show this symptom, Soon the leaves shows chlorosis in streaks on the upper surface while the lower surface shows downy growth of the fungus.
Favorable Conditions-
It’s a seed borne and soil borne disease. Favorable conditions for the growth of fungus is Temperature between 15-25oC and Relative Humidity above 75%.
Management-
2. Leaf Blast-
Causal Organism- Pyricularia spp.
Symptoms- It is a fungal disease. Blast symptoms can be observed on the seedling, leaf, peduncle and finger depending on the stage of the crop. The infection appears in the nursery from second week of germination and spread quickly to entire nursery as well as to main field. Young leaves dry completely in the nursery itself. Small brown circles to elongated spots appear on leaves which eventually develop into large elongated spindle shaped areas in the seedling stage. The neck region turns black and shrink.
Favorable Conditions- Favorable conditions for the growth of fungus is Temperature between 25-30oC and Relative Humidity of 90% or above. Heavy dose of Nitrogen, Cloudy days with intermittent rainfall also favors the disease.
Management-
3. Downy Mildew-
Causal Organism- Sclerospora graminicola
Symptoms-
Favorable Conditions- Temperature between 15-20oC and Relative Humidity above 85% favors the growth of fungus.
Management-
4. Ergot-
Causal Organism- Claviceps fusiforms
Symptoms-
Favorable Conditions-
Management-
5. Smut-
Causal Organism- Tolyposporium penicillariae
Symptoms-
Favorable Conditions-
Management-
1. Nitrogen-
Symptoms- Older leaves become light green and chlorotic at the tip. Leaves die under severe stress. Except for young leaves which are greener, deficient leaves are narrow, short, erect and lemon yellowish.
The entire field may appear yellowish and stunted growth of plants Nitrogen deficiency often occurs at critical growth stages such as tillering and panicle initiation, when the demand for N is large.
Correction Measures- In areas of uncertain rainfall, 50% at sowing and the remaining 50% around 35 days after sowing is recommended. Urea 2% @20gm/L of water foliar spray at 40 and 50 days after sowing increased yield of Bajra.
2. Potassium-
Symptoms- Potassium deficiency symptoms often appear on drought stressed conditions. Dry Weather and its effects on soil properties have contributed to poor potassium uptake by plants.
Deficiency symptoms first appear as pale to lemon-yellow margins on older leaves. Browning followed by necrosis of leaf margins denotes an increase in severity of the deficiency
Correction Measure- Cultivate earlier in the season to avoid damaging plants. Apply Potassium fertilizer @12kg/acre for irrigated crop, should be broadcasted and incorporated before planting or sowing.
3. Phosphorus-
Symptoms –
Control Measures – Foliar spray of 2% DAP @20g/L of water 2-3 sprays at an interval of 15 days.
4. Iron-
Symptoms- Deficiency appears first on younger leaves. New growth is pale yellow.
Control Measures- Foliar spray of CaSO4 @20g/L of water
1. Shoot Fly-
Symptoms – A serious pest on Pearl Millet all over India, during cold weather season, it attacks the crop both in seedlings and boot leaf stage. It causes “Dead Hearts” in young plants and chaffy grains in the mature crop.
Management –
2. Stem Borer-
Symptoms – The central shoot turns brownish and dries out. Although the lower leaves remain green and healthy called as “Dead Hearts”. Bored holes are plugged with excreta. White ear symptom appears during panicle initiation stage, the empty panicles become very conspicuous in a field because they remain straight and whitish.
Management –
3. Gall Midge-
Symptoms – Maggot feeds on developing grains causing grainless glumes with white pupal case attached to the tip of the spikelet.
Management – Spray Malathion 5% DP @12kg/acre or Carbaryl 10 D @12kg/acre.
4. Black Hairy Caterpillar-
Symptoms –
Management – Spray Monocrotphos 36% SL @350-500ml/acre or use Ampligo @80-100ml/acre mixed well with soil.
Harvesting:
The crop is ready for harvesting when the grain become hardy and contain moisture. Two methods can be followed in harvesting. Cutting earhead or cutting of entire plants by stick. Stalk the cut plants for 4-5 days in the sun for drying grains. Grains can be separated by beating the earheads.
Yield:
Rainfed crop yields about 6 to 8 quintals/acre and irrigated crop yields about 12-17quintals/acre.