ekrishiblog.files.wordpress.com€¦ · web viewcontrol- use 2 percent methyl parathion or...
TRANSCRIPT
DISEASESSmuts-:
Barley is attacked by loose and covered smut.
(1) Loose smut: Loose smut replaces grain heads with smut, or masses of spores which
infect the open flowers of healthy plants and grow into the seed.
(2)Covered smut:
Kernels of infected plants are replaced by masses of dark brown smut spores. Smutted heads are hard and compact. Infected plants may be stunted.
Control-
Grow resistant varieties. Pick the diseased earheads before rupture of the membrance in the paper
bages and burn them Treat the seed with systemic fungicide such as Vitavax or Benlate at the rate of
2.5 g per kg of seed.
Powdery mildew
This disease is caused by a fungus Erysiphegraminis.It develops as a powdery growth over the surface of leaf ,leaf sheath and floral bracts.
Control-
crop rotation, removal of debris, reduced use of nitrogen, optimal sowing conditions and timing
Cultivation of resistant varieties. Three spray of karathane (0.2%) at interval of 15 days control the disease.
Rusts-:
a) Yellow rustb) Brown rustc) Black rust
Yellow rust Brown rust Black rust
Control-
Cultivation of rust resistant varieties like RD-2503,RD-2508,RD-2552,DL-88,Alfa-93 .
Four sprays of Zeneb at the rate of 1 kg per acre in 280-320 litres of water at fortnightly intervals offer an effective control.
INSECT
a) White antsb) Termitesc) Gujhia weevild) Cutworms
Control- Use 2 percent Methyl parathion or Malathion dust at the rate of 8-10 kg per acre and mix it well in the soil at the time of last ploughing before sowing.
Weed management-:
Anagalis arvenses Chenopodium album Melilotus indica
(Krishna neel) (Bathua) (Senji)
Control-:
Broad leaves weed can be controlled by an application of 2,4-D sodium salt or 2,4-D amine salt at 0.30 kg a.i. per acre in 280-300 litres of water per acre.
Phalarisminor(Canary grass) Avenafatua(Wild oat)
Control of Phalaris minor and wild oat spray Isoproturon 75 WP at the rate of 0.40 kg/acre in 240-280 litres of water 2-3 days after sowing
Integrated pest management-:
Common cultural practices:
• Provide irrigation at critical stages of the crop
• Avoid water stress and water stagnation conditions.
• Enhance parasitic activity by avoiding chemical spray, when larval parasitoids are observed
Common mechanical practices:
• Collection and destruction of eggs, and larvae
• Collect and destroy diseased and insect infected plant parts
• Use yellow sticky traps for aphids and blue sticky traps for thrips @ 4-5 traps/acre.
• Use light trap @ 1/acre and operate between 6 pm and 10 pm
• Set up bonfire during evening hours at 7-8 pm
Common biological practices:
• Conserve natural enemies through ecological engineering
• Augmentative release of natural enemies.
Improved varieties-:
Table 1. Barley varieties recommended for different agro-climatic conditions
Variety Zone Production conditionsK-508 U.P. Irrigated timely sownK-551 NEPZ Irrigated timely sownK-560 NEPZ Rainfedtimely sownK 603 NEPZ Rainfedtimely sownHUB 113 NEPZ Irrigated timely sownJB 58 M.P. Rainfed timely sownPL 751 CZ Irrigated timely sownJawahar Barley1 MP Irrigated timely sownRD 271 5 CZ Irrigated timely sown(Dual
purpose)RD 2786 CZ Irrigated timely sown
Table 2.Hullless barley Variety
Variety Production conditionsGeetanjali (K 1149) Timely sown, irrigatedNDB 943 Timely sown, irrigatedDolma Northern hillsKaran 16 Timely sown, irrigated
Table 3 Barley varieties for cultivation under saline- alkaline soils
Variety Zone Production ConditionsN Barley-1(NDB 209) U.P. Irrigated timely sownN Barley-3 (NDB 1020) U.P. Irrigated timely sown & Late
sownNDB 1173 NEPZ & NWPZ Irrigated timely sownRD 2794 NEPZ & NWPZ Irrigated timely sownRD 2786 CZ Irrigated timely sown
Mahamana 113 (HUB 113)- released by BHU,varanasi
Method of sowing-:
In rainfed condition seed should be dropped with the healp of ‘Pora or Nai’ attached to a local plough or with the help of seed drill to ensure uniform distribution of seed at the optimum depth. In irrigated areas seed may be sown by ‘Kera’ method where seed is dropped by hand into the furrow
Manures and Fertilizer-: In irrigated crop,about4-5 tonnes per acre of compost or farm yard manure could
be applied about a month before sowing.
The quanty of fertilizer to be applied varies according to the fertility status of soil However soil data is not available,applyferlilizer as below;
Condition Urea(Kg/acre) SSP(Kg/acre) MOP(Kg/acre)Irrigated 70 125 34Rainfed 43 75 20Late sowing 35 75 14
Half of nitogen and total amount of phosphorus,potash should be applied at the time of sowing.The remaining half quantity of nitrogen should be top-dressed at the time of first irrigation.
Water management-:
No of irrigation Critical stage for irrigation
First Active tillering (30-35 DAS)
Second Milking stages (80-85 DAS).
Time of sowing-:
October 15 to November 15.
SeedTreatment-:
Seed treatment is very essential to control the seed born diseases in barley.
For control of loose smut, seed should be treated with vitavax or bavistin @ 2g/kg seed.
Untreated seed Treated seed
The covered smut can be controlledby seed treatment with 'l:1 mixture of thiram +vitavax or bavistin @ 2.5g/kg or'19 of raxil/kg seed
lf termite problem is observed in the fields, treat the seed with 150 ml chloropyriphos (2oEC) or 250m1 formathion(25EC) in 5 litres water for 100ks seeds.Seed rate and Spacing-:
Irrigated - 30 kg/acreRainfed - 35-40 kg/ acresaline soils- 40 kg/ acre.
spacing of 22.5 cm between row and depth of 4-5 cm.
Classification -:
Alberg and Wiebe(1946) classified all the cultivated barley varieties into three distinct species based on the number of rows of grain and their arrangement
Hordeumvulgare - In this species all the three spikeletsat each node of the spike are fertile. The spikeletes are in six distinct rows and arranged at a uniform distance around the tough rachis. It is called six- row barley .
Hordeumdistichon - In this species only the medium spikelet are fertile and set grain. Although lateral spikelets are infertile .It is called two -row barley.
Six row barley Two row barley
Hordeumirregulare -In this species central spikelets are fertile flowers and set grains.
Inlndia, both 2-rowed and 6-rowed barleys are cultivated. Two-rowed barley is more suitable for malting purpose than six-rowed.
Climatic requirements-:
Barley requirecool weather during earley growth and warm and dry weather at maturity. It grows fairly well in temperate as well as in subtropical region of the earth.
Soil -:
Barley thrives best on well drained,fertile deep loam soils. Being a salt tolerant crop,it can do well even in salt affected
soils.
Field preparation-:
four to five ploughingswith local plough or three to four harrowing followed by planking are sufficient to prepare a good seed bed.
In areas where crop is attacked by termites,mix 2% Methyl parathion dust in soil at the rate of 10 kg per acre at the time of last ploughing
Economic importance-:
In India 90% as human food Used for malt, beer, whisky and industrial alcohol, vinegar Energy rich drinks like bournvita, boost, Horlicks are from barley malt Medicinal value Reduce cholesterol level in liver It also stimulates fatty acid synthesis in liver In USA as cattle feed and horse feed Biscuit making Great demand to malting industry
Harvesting-:
The crop should be harvested immediately after it ripens otherwise it might lodge and shatter grains.Harvesting of crop is done with sickle and harvester.
YIELD-:
12-15 quintals of grain and 16-20 quintals of straw per acre.
Created & Uploadedby: -RISHIRAJ (13121)