Tag: rotation of crops

Questions Related to rotation of crops

_____ are constructed wherever plenty of exploitable ground water is available.

biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

  1. Wells

  2. Canal system

  3. Tanks 

  4. River lift system

Show answer
Correct Option: A
Explanation:

Well system is based on the availability of ground water. In the well irrigation system, the wells are constructed wherever exploitable ground water is present.

Thus, the correct answer is option A.

___________ are let out in the fields to destroy pests selectively.

biology agricultural management patterns of cropping rotation of crops common irrigation systems

  1. Birds

  2. Insects

  3. Ladybirds

  4. All of the above

Show answer
Correct Option: D
Explanation:

In biological control method, birds, insects and other living organisms are deliberately let out in fields to selectively kill pests. This becomes an easy method for protecting crops against selective pests.

What is/are the disadvantage/s of tube well irrigation system?

biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

  1. Groundwater is used as the source

  2. Can be dug at any convenient place

  3. Simplest and the cheapest source 

  4. Both A and B

Show answer
Correct Option: A
Explanation:

Tube well irrigation system is a type is a system in which water is supplied to the fields by connecting large pipes 100-200 mm. The main disadvantage is it leads to depletion of groundwater due to which groundwater reserves may get exhausted.

So, the correct option is 'Groundwater is used as the source'.

Which type of soil is preferred the most for basin irrigation?

biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

  1. Loamy

  2. Sand

  3. Hard crust

  4. Clayey

Show answer
Correct Option: A
Explanation:

Loamy soil is a type of soil which is composed of sand,slit and some clay. its mineral composition is about 40%. This type of soil is mainly required for ideal plant-growing. It is rich in minerals and plants thrive best in this type of soil.

So, the correct option is 'Loamy'.

Furrow irrigation is a type of .......... irrigation.

biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

  1. Tube well

  2. Basin

  3. Surface

  4. Flood

Show answer
Correct Option: C
Explanation:

Furrow irrigation is a type of irrigation in which water runs on the surface in small ditches and furrows. It is conducting by creating small parallel channels for the flow of water on the surface. 

So, the correct option is 'Surface'.

Colletotrichum infecting sugarcane produces which of the following asexual fruiting bodies?

biology agricultural management patterns of cropping rotation of crops common irrigation systems

  1. Acervulus

  2. Pycnidiurn

  3. Sporodochium

  4. Synnemata

Show answer
Correct Option: A

Prolonged liberal irrigation of agricultural fields is likely to create the problem of -

biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

  1. Aridity

  2. Metal toxicity

  3. salinity

  4. Acidity

Show answer
Correct Option: C
Explanation:
Irrigation without proper drainage of water leads to water clogging in the soil. Due to clogging, the vegetation and crops die due to insufficient supply of oxygen to them this condition is called as Salinity.
So, the correct answer is 'Salinity'.
So the correct option is C.

Match List I(Rice diseases) with List II(Causal organisms) and select the correct answer using the codes given the lists.

List-I List-II
a. Blast $1$. Ephelis oryzae
b. Stern rot $2$. Xanthomonas oryzae
c. Udbatta $3$. Sclerotium oryzae
d. Blight $4$. Pyricularia oryzae
biology agricultural management patterns of cropping rotation of crops common irrigation systems

  1. A-$4$, B-$3$, C-$1$, D-$2$

  2. A-$2$, B-$1$, C-$3$, D-$4$

  3. A-$2$, B-$3$, C-$1$, D-$4$

  4. A-$4$, B-$1$, C-$3$, D-$2$

Show answer
Correct Option: A

Solid waste may choke drains and gully pits, resulting in

biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

  1. Sedimentation

  2. Water logging

  3. Soil erosion

  4. All of above

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Correct Option: B

In India, under canal net-work system of irrigation, generally, how much amount of water is allowed to run in small canal?

biology natural resources and agriculture patterns of cropping rotation of crops common irrigation systems

  1. Less than 4 cusec

  2. Less than 10 cusec

  3. Between 15 to 20 cusec

  4. Between 25 to 30 cusec

Show answer
Correct Option: B
Explanation:

Canal irrigation was started in 1960, these are human-made channels for water transportations. India has the largest canal system starting for Harike Barrage and terminates in irrigation facilities in the Thar Desert, it is known as The Indira Gandhi Canal. Now, canal irrigation is 2nd largest source of water transportation in the world.

So, the correct option is 'Less than 10 cusec'.