71.
Which of the following practices can help in water conservation in agriculture?
1. Reduced or zero tillage of the land
2. Applying gypsum before irrigating the field
3. Allowing crop residue to remain in the field
Select the correct answer using the code given below :
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Solution: (d) 1, 2 and 3
Reduced or Zero tillage of land, Applying gypsum before irrigating the field and Allowing crop residue to remain in the field help in water conservation in agriculture
Tillage is the agricultural preparation of soil by mechanical agitation of various types, such as digging, stirring, and overturning.
No-till farming (also called zero tillage or direct drilling) is a way of growing crops or pasture from year to year without disturbing the soil through tillage. Zero tillage helps in soil moisture conservation.
Statement 2: An infiltration problem often occurs in farms if the irrigation water does not enter the soil rapidly enough during a normal irrigation cycle.
Gypsum helps in dissolution of the salt clay pan found in soils that hinder the percolation of water. This increases the efficiency of irrigation as less water is needed to irrigate the same soil.
Adding gypsum to irrigation water further increases its infiltration rate.
Statement 3: This reduces evaporation of farm soil water.
1. Reduced or zero tillage of the land
2. Applying gypsum before irrigating the field
3. Allowing crop residue to remain in the field
Select the correct answer using the code given below :
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Solution: (d) 1, 2 and 3
Reduced or Zero tillage of land, Applying gypsum before irrigating the field and Allowing crop residue to remain in the field help in water conservation in agriculture
Tillage is the agricultural preparation of soil by mechanical agitation of various types, such as digging, stirring, and overturning.
No-till farming (also called zero tillage or direct drilling) is a way of growing crops or pasture from year to year without disturbing the soil through tillage. Zero tillage helps in soil moisture conservation.
Statement 2: An infiltration problem often occurs in farms if the irrigation water does not enter the soil rapidly enough during a normal irrigation cycle.
Gypsum helps in dissolution of the salt clay pan found in soils that hinder the percolation of water. This increases the efficiency of irrigation as less water is needed to irrigate the same soil.
Adding gypsum to irrigation water further increases its infiltration rate.
Statement 3: This reduces evaporation of farm soil water.