Soil Science - Study Mode

[#816] The Fertilizer Control Order came in
Correct Answer

(B) 1957

Explanation

Solution: The fertilizer control order came in the year 1957. The Fertilizer Control Order, 1957 was issued under Section 3 of ECA, 1955 to regulate manufacture, trade and distribution of Fertilizers in the country. The main aim of the fertilizer control Order is to ensure adequate availability of the right quality of fertilizers at the right time and right price to farmers, the fertilizer was declared an essential commodity and fertilizer control order (FCO). It also works to regulate, trade, price, quality and distribution of fertilizers in the country.

[#817] Indian soils are deficient in
Correct Answer

(A) Zn

Explanation

Solution: At present 49% of Indian soils are potentially deficient in diethylene-triamine pentaacetate (DTPA) extractable Zinc. Zinc is one of the eight essential micronutrients. It is needed by plants in small amounts, yet crucial to plant development. In plants, zinc is a key constituent of many enzymes and proteins. It plays an important role in a wide range of processes, such as growth hormone production and internode elongation.

[#818] Copper deficiency causes
Correct Answer

(A) White bud in maize

[#819] Stem melanosis disease occurs in wheat due deficiency of
Correct Answer

(B) Cu

Explanation

Solution: Stem melanosis, a disease of spring wheat and was first reported in 1965. The diseased plants are characterized by bleached empty heads and by blackening of the rachis, peduncle and stem immediately beneath the nodes. This disease in wheat is caused by Pseudomonas cichorii grown on soil because of the deficiency of copper.

[#820] Most common zinc fertiliser is
Correct Answer

(C) Zinc-sulphate

Explanation

Solution: Zinc sulphate is the most commonly used zinc fertilizer worldwide. It is a micronutrient fertilizer and it usually contains 33% zinc and 15% of Sulphur. It is available in both crystalline monohydrate and heptahydrate forms. It helps to prevent low yields, spotted leaves and stunted growth. It can also be used as a natural fungicide.