Soil Science MCQ Question and Answer | Agriculture MCQ Question

FYM stands for Farmland Manure and is an important organic resource for agricultural production in livestock-based farming systems in the semi-arid tropics of India.
It contains well-decomposed farmyard manure with 0.5% nitrogen, 0.2% P₂O₅ and 0.5% K₂O.

Munsell colour chart is a colour space that specifies colour based on three properties of colour that is hue, Chroma (colour intensity) and Value(lightness). Hue stands for basic colour.
It was created by Professor Albert H. Munsell in the first decade of the 20^th century.
Each horizontal circle Munsell divided into five principal hues i.e. Red, Yellow, Green, Blue and Purple. The range of hues in the Munsell colour chart is 0 - 10.

Dry Ashing is a technique for analyzing plants and it is performed by placing a sample in an open inert vessel destroying the combustible portion of the sample by thermal decomposition using a muffle furnace.
Dry ashing methods are used for the mineralization of organic materials, biological tissues, liquids, plant and foodstuff and sludge. It is suitable for the analysis of element Boron in plants.

Jute bags are first of all eco-friendly, biodegradable, and made up of plant products so they will be less harmful to food grains also it is made up of strong natural fibre.
And for stacking purposes in the storage godowns, jute bags can be stacked higher than HDPE (High-Density Polyethylene) bags as jute bags are less slippery than plastic bags.

C : N ratio is a ratio of the mass of carbon to the mass of nitrogen in a substance. The C : N ratio is observed to be higher in Edible oil cakes like Soybean Cake, Rapeseed cake, Cottonseed cake, groundnut cake, sunflower cake, copra cake and linseed cake, etc.

Basic slag is a byproduct of the steel industry low in silica and high in base-forming oxides that are used in the basic process of steelmaking and that is subsequently useful as a fertilizer.
It is mostly citrate soluble fertilizers, quicklime and magnesite introduced for refractory protection, neutralizing the alumina and silica separated from the metal.

Endopedon is a diagnostic horizon characterized by the accumulation of aluminum and organic matter with or without iron. And the endepedon with high bulk density is known as Fragipan.
A Fragipan is a diagnostic horizon in USDA soil taxonomy. They are altered subsurface soil layers that restrict water flow and root penetration.

Leucoxene is amorphous hydrous titanium oxide. It is a fine granular alteration product of titanium minerals, a mineral consisting of rutile and partly of anatase or sphene occurring in some igneous rocks and iron ore deposits.
It varies in colour from yellow to brown.

Nitrogen-fixing bacteria are prokaryotic microorganisms that are capable of transforming nitrogen gas from the atmosphere into fixed nitrogen compounds that can be easily available for plants for absorption like ammonia.
Bacteria can be anaerobic like Clostridium and aerobic like Azatobacter.
Clostridium is a non-symbiotic, anaerobic nitrogen fixing bacteria that fix nitrogen in the absence of oxygen.

Urea is an organic compound and more than 90% of world industrial production of urea is destined for use as a nitrogen-release fertilizer. Urea breaks down in the soil to give ammonium.
The efficiency of urea can be increased by using neem cake with it, as it reduces the rate of nitrification thus efficiency is increased.