Agronomy - Study Mode

[#506] Indian Journal of Agricultural sciences published from
Correct Answer

(D) Indian Council of Agricultural Research

Explanation

Solution: All the Indian research journals of agricultural sciences are published by the Indian Council of Agricultural Research (ICAR). Journals are devoted to experimental agriculture and are abstracted by all the major abstracting services. Nowadays with the advancement of technology, e-journals and online articles are also been published.

[#507] Absolute zero is
Correct Answer

(C) -273°C

Explanation

Solution: Absolute zero is the lowest temperature i.e. lowest limit of the thermodynamic temperature scale, can be said as a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value, taken as zero Kelvin, and can be represented as -273.15 degrees in Celsius.

[#508] Irrigations in gram are recommended at
Correct Answer

(D) Before flowering and pod formation stages

Explanation

Solution: Gram is the crop of rabbi season. It does not require stagnant water in any case and time while timely and well-managed irrigation is required for gram. First of all, irrigate immediately after sowing then on the 3 rd day followed by repetitive irrigation after 7 - 10 days depending upon soil and climatic conditions while irrigation before flowering and during the pod formation stage is the most critical and highly recommended stage when irrigation in grams is must.

[#509] In functional allelopathy
Correct Answer

(B) A precursor is released which is converted into active substances by some microorganisms

Explanation

Solution: Allelopathy is a common biological phenomenon by which one organism produces biochemicals that influence the growth, survival, development and reproduction of other organisms. In functional allelopathy, a precursor is released which is converted into active substances by some microorganisms.

[#510] Which one is green manure/biofertiliser?
Correct Answer

(A) Sesbania

Explanation

Solution: Green manures are the crops that are grown especially for building and maintaining soil fertility. Sesbania is a flowering plant and its common name is Riverhemp. These are mostly used in alley cropping to increase the soil’s nitrogen content.