- When seasonal conditions are not favorable the crop growth usually
gets retarded.
- In situations of unfavorable seasonal conditions some agronomical
practices are to be modified and contingency plans are to be worked
out to over-come the adverse affects in growth.
Modified Practices
Delayed monsoon Rain
- When the South West monsoon rains are delayed in Kharif season application
of one kg of Muriate of Potash for every 5 cents of nursery imparts
drought tolerence in the event of limited supply of irrigation
water to nursery beds.
- Growing of short duration varieties has to be taken up since the long
and mid duration varieties are not suitable for planting
beyond 15th August.
- Close planting has to be followed by maintaining 65 to 80 hills /
sq.m. and 3-4 seedlings per hill.
- Avoid Nitrogen application in nurseries when the seedlings are over
aged as this is found to have adverse effect on yields.
- Phosphorous, Potash and Zinc should be applied as basal to the main
field for good establishment and growth.
- Application of Nitrogen (16 to 24 Kg/ac) may be modified
as follows.
- Basal application 2/3rd and 1/3rd at panicle initiation.
- Apply 2-4-D ( Ethyl Ester) 4 G @ 4kg /ac and Butachlor 5 G @ 4.0 Kg
/ac.
- Three to five days after transplanting for effective weed control.
- Flowering is likely to be advanced by 15 to 20 days depending on the
variety.
- Availability of sufficient soil moisture from Panicle Initiation to
flowering is very essential to realize satisfactory yields.
Damage done to the crop due to non- availability of soil
moisture at this stage is irreversible.
- Carbendazime 0.1% (1 g/1) may be sprayed at an interval of ten days
for the management of sheath blight and blast.
- Leaf folder, green leafhopper, stem borer, gall midge are likely to
infest the rice crop from last week of August. Monocrotophos @
300 ml/acre (1.5 ml/l) or Chlorpyriphos @ 400 ml/acre (2.0 ml/l) may
be sprayed as soon as incidence is noticed keeping in view of the ETL.
Late release of canal water
- Due to late release of canal water the sowing of nurseries and planting
of rice is likely to be delayed beyond the cut-off date 15th July and
the rice yield of popular long duration varieties are reduced by 15%
to 30%.
- The pest and disease incidence is likely to increase. To get normal
yield the following practices are recommended.
- Varieties like MTU 2400, MTU 1001, Swarna, and Chaitanya to be preferred.
- Shallow planting of 25 days aged seedlings @ 4 to 6 per hill and increase
the plant density from 33 to 44 hills/m2.
- Increase N level by 50% and apply in three equal splits (Basal, 20
after transplanting and Panicle Initiation)
- in case of long duration cultivars, 2/3rd basal and 1/3rd at 25 days
after
transplanting
- Carbendazime 0.1% (1g/Lit) may be sprayed at an interval of ten days
for the management of sheath blight and blast.
- Leaf folder, green leafhopper, stem borer, gall midge are likely to
infest the rice crop from last week of August. Monocrotophos @
320 ml/acre (1.6 ml/l) or Chlorpyriphos @ 400 ml/acre (2.0
ml/l) may be sprayed as soon as incidence is noticed keeping in
view of the ETL.
- Phosphorous, Potash and Zinc should be applied as basal to the main
field for good establishment and growth
- Apply 2-4-DEE 4 G @ 4kg /ac and Butachlor 5 G @ 4.0 Kg /ac Three to
five days after transplanting for effective weed control
Heavy Rains & Water Logging
- In case if the paddy crop is caught in heavy rains due to cyclones
etc. during harvesting time the grain get discolored and moulds may
develop.
- Further the germination also get deteriorated.
- In such situations sprinkling of powdered common salt on
wet sheaves results in improvement in germination capacity.
- The discoloration of grain and fungal development is also low.
Completely damaged due to floods
- Wherever the crop is completely damaged replanting may be adopted
- Varieties like Swarna, BPT 1235, IR 64, IET 1444 can be taken up by
raising nurseries immediately.
- The plantings should be done on or before 31st August.
- N, P, K at 60: 40: 30 Kg/ha is recommended. 50% of the recommended
N and entire P and K should be applied as basal dose before
planting. 25% of the N should be applied at 20 days after
planting.
- A final dose of 25% recommended dose (N) should be applied
at PI stage.
- A Spacing of 15-x 15-cm (44 hills/m2) is to be adopted.
- If zinc deficiency is observed on standing crop, it should be corrected
by spraying 0.2% zinc sulphate solution 2-3 times at 4 to 5 days interval.
- Leaf folder, green leafhopper, stem borer, gall midge are likely to
infest the rice crop from last week of August. Monocrotophos @ 320 ml/acre
(1.6 ml/l) or Chlorpyriphos @ 400 ml/acre (2.0 ml/l) may be sprayed
as
soon as incidence is noticed keeping in view of the ETL.
- Phosphorous, Potash and Zinc should be applied as basal to the main
field for good establishment and growth
- Apply 2-4-DEE 4 G @ 4kg /ac and Butachlor 5 G @ 4.0 Kg /ac Three to
five days after transplanting for effective weed control
Partially damaged by floods
- Wherever the crop is partially damaged,
- Gap filling has to be adopted.
- If seedlings are not available for gap filling, the survived
hills are to be split into individual tillers and used for gap filling.
- Swarna and Chaitanya varieties performed well with split tillers and
they withstood the submergence for about one week and survived with
2-3 tillers.
- A booster dose of 20-35 Kg of Urea and 15 Kg of Muriate of Potash
per acre are to be applied to hasten the establishment and
promote more Tillering.
- Nitrogen at Panicle Initiation stage is to be applied as per normal
recommendations keeping in view of the existing pest situation.
- The pests like leaf folder, stem borer, BPH, cutworm, neck blast and
sheath blight are likely to occur. Recommended plant protection
measures are to be taken up for their control.
Prolonged moisture stress situation in Tank fed Areas
- In areas where the crop is in vegetative stage and if subjected to
prolonged moisture stress, soon after receipt of good rain, split application
of 4kg N/ac and foliar application of 2% urea or Liquid Fertilizers
(Polyfeed) is suggested for speedy recovery.
- Leaf folder, green leafhopper, stem borer, gall midge are likely to
infest the rice crop from last week of August.
- Monocrotophos @ 320 ml/acre (1.6 ml/l) or Chlorpyriphos
@ 400 ml/acre (2.0 ml/l) may be sprayed as soon as incidence is noticed
keeping in view of the ETL.
- Phosphorous, Potash and Zinc should be applied as basal to the main
field for good establishment and growth
- Apply 2-4-DEE 4 G @ 4kg /ac and Butachlor 5 G @ 4.0 Kg /ac Three to
five days after transplanting for effective weed control.
- Drought Tolerant Varieties like Prabhavathi ,Rasi or MTU 9993 may
be recommended the in place of traditional cultivators (Budama).
|