What is the critical stage of irrigation for groundnut?

Pegging, flowering and pod development phases are critical for irrigation during which period adequate soil moisture is essential.

What is critical stage of water requirement?

The critical stages for water requirement are early tillering, boot stage, grain filling. The optimum soil-moisture range is from 100-60% of availability in the maximum root-zone which extends from 40-60cm. on different soil types.

How do groundnuts grow under irrigation?

The best spacing between rows under rainfed conditions should be 90 cm with a spacing of 4 cm to 7 cm between the plants; and 30 cm to 35 cm under irrigation. The ideal intra row spacing is between 50 to 75 mm for all available cultivars. imperative. Groundnuts are adapted to a soil with a pH (H20) of 5, 3 or higher.

What is the water requirement of groundnut?

* Groundnut requires on an average 400-500 mm of water but it varies with soil type, agro-climates and genotype. Total rainfall to a tune of 400-600 mm, well-distributed over the entire growth period during kharif results in good yield.

Can groundnuts be irrigated?

Only 19% of groundnut area in India is irrigated. Groundnut crop is exposed to drought conditions very often during its growth and consequently the yields are lower than the potential yield. So, if the farmers want higher groundnut yields, the answer is irrigation if water is available.

What is peg in groundnut?

Peg: A Specialized Organ in Peanut Peanut has a unique mechanism to embed fertilized ovary of flower into the ground through specialized organ known as the peg or gynophore. Peg is a tube like structure which is formed after successful fertilization in flowers.

What is critical irrigation stage?

The stage at which the water stress causes severe yield reduction is also known as. critical stage of water requirement. It is also known as moisture sensitive period. Moisture stress due to restricted supply of water during the moisture sensitive period or. critical stage will irrevocably reduce the yield.

What are the critical stages?

Initial seedling, pre flowering, flowering, grain formation. Early vegetative, taselling and silking stage.

How long does groundnut take to mature?

It takes only about three months for groundnut to mature.

What is the spacing of groundnut?

The results revealed that potential production from bunch groundnut could be secured by keeping inter-row spacing of 30 cm with the seed rate of 60 kg kernel ha-1.

What is border strip method of irrigation?

Border irrigation is a type of surface irrigation where the field is divided into strips separated by border ridges running down the gradient of the field. The area between the ridges is flooded during irrigation.

How many days does groundnut germinate?

How many days does it take Groundnut to germinate? Seed germination usually occurs within 5 to 10 days, and within 25 to 40 days after sowing, yellow flowers form. Upon flower pollination, Groundnut plants send pegs down into the soil. The Groundnuts grow on these pegs underground.

When to apply water in critical stages of groundnuts?

Maintaining moisture in the range of 100-50% of availability by one or two supplementary irrigations increases their yield more than double. In case of groundnut 8-10 irrigation of about 50 mm each are applied at 10-15 days intervals during its growth period (critical stages-pegging to pod formation).

Why are crops irrigated only at critical stages?

The interval between two irrigation depends primarily on the rate of soil moisture depletion. Normally the crop should not allowed to extract more than 50% available water. The intervals are shorter in sandy soil than heavy soil. When the water supply is very limited, the crops are irrigated only at critical stages.

How long do you withhold irrigation on groundnuts?

After the plant is established, irrigation may be withheld for 15-20 days. This will create stress and induce early flush of heavy flowering. Maintenance of soil moisture is very critical during 50-80 days (pegging and pod formation stages) of the crop.

Which is the critical stage of plant growth?

The critical stages of growth are the early vegetative period (30-40 days after sowing) and tasselling (45-50 days). In the northern parts, two or three irrigation is required to establish the crop before the on set of the monsoon. The optimum moisture range is from the field capacity to 40% of availability.