Description : Lowland applied nitrification inhibitors
Last Answer : Ans. Oxamide (31%N) and Thiourea (36.8%N)
Description : Which of the following is a natural inorganic fertiliser? (A) Chile salt petre (B) Oilcake (C) Gobar manure (D) None of these
Last Answer : (A) Chile salt petre
Description : Microbial degradation of nitrates into atmospheric nitrogen is known as- (1) Ammonification (2) Nitrification (3) Denitrification (4) Putrefaction
Last Answer : (3) Denitrification Explanation: Denitrification is the biological conversion of nitrate to nitrogen gas, nitric oxide or nitrous oxide. It refers to nitrate reduction by bacterial species such as ... (N2). These bacteria use nitrate as an electron acceptor instead of oxygen during respiration.
Description : (3) Conversion of ammonia to nitrites Explanation: Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The oxidation of ammonia ... -oxidizing archaea (AOA). Nitrification is an important step in the nitrogen cycle in soil.
Last Answer : Acid rain is caused due to pollution of atmosphere by – (1) oxides of carbon and nitrogen (2) oxides of nitrogen and sulphur (3) oxides of nitrogen and phosphorous (4) None of these
Description : Nitrification is the biological process of converting – (1) N9 into nitrate (2) N2 into nitrite (3) Ammonia into nitrite (4) Ammonia into N2
Last Answer : (3) Ammonia into nitrite Explanation: Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The transformation of ammonia ... limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil.
Description : The renewal of NO3 involves release of ___________ from organic fraction of the soil and its rapid nitrification: a. NO2 b. NH4 c. N d. NO
Last Answer : NH4
Description : Which of the following factors does not affect the nitrification ? (A) Air (B) Seed (C) Temperature (D) Moisture
Last Answer : (B) Seed
Description : Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D (a) Nitrification Ammoni- Animals Plants fication (b) ... Plants Animals fication (c) Nitrification Denitri- Animals Plants fication (d) Denitrification Nitrification Plants Animals
Last Answer : (b) Denitrification Ammoni- Plants Animals fication
Description : Thiobacillus is a group of bacteria helpful in carrying out (a) denitrification (b) nitrogen fixation (c) chemoautotrophic fixation (d) nitrification.
Last Answer : (a) denitrification
Description : Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in (A) Coagulation and flocculation of colloids (B) Oxidation of carbonaceous matter to CO2 (C) ... to the nitrite and eventually to the nitrate (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Which is the optimum PH for nitrification? (Agriculture MCQ) a. 8.5 b. 9.5 c. 10 d. 7.5
Last Answer : a. 8.5
Description : Nitrogen oxidation (nitrification)refers to the A- conversion of ammonium ions into nitrates through the activities of certain bacteria B- changing of atmospheric nitrogen (N2) to nitrogen compounds C- sulfur is oxidized to the sulfate form through Thiobacillusbacteria D- none of the above
Last Answer : conversion of ammonium ions into nitrates through the activities of certain bacteria
Description : Microbial degradation of nitrates into atmospheric nitrogen is known as : (1) Ammonification (2) Nitrification (3) Denitrification (4) Putrefaction
Last Answer : Denitrification
Description : Which of the process is known as nitrification? (1) Reaction of Nitrogen Monoxide with oxygen to form nitric acid (2) Reaction of nitrogen dioxide with water to form nitric acid (3) Conversion of ammonia to nitrites (4) Conversion of nitrite to nitric oxide
Last Answer : Conversion of ammonia to nitrites
Description : Nitrification is the biological process of converting (1) N2 into nitrate (2) N2 into nitrite (3) Ammonia into nitrite (4) Ammonia into N2
Last Answer : Ammonia into nitrite
Description : The most appropriate and effective type of crop cultivation in forests
Last Answer : Ans. Intercropping
Description : Crop Production + livestock raising is called
Last Answer : Ans. Mixed farming
Description : Crop production and dairy enterprise having
Last Answer : Ans. Supplementary relationship
Description : Choose best crop enterprises
Last Answer : Ans. Principal of opportunity cost
Description : Only tuber crop, which is rich in protein?
Last Answer : Ans. Colocasia
Description : A deep rooted crop is
Last Answer : Ans. Sweet potato
Description : Which crop is commonly known as Single seeded nut?
Last Answer : Ans. Litchi
Description : The vegetable crop under approval for Bt. technology
Last Answer : Ans. Brinjal
Description : The seed of a crop variety produced by the breeder which is small in quantity is said to be
Last Answer : Ans. Nucleus seed
Description : Clonal selection mostly used in the crop
Last Answer : Ans. Ginger
Description : Multiline breeding is exploited widely in the crop
Last Answer : Ans. Wheat
Description : The oldest selection method of crop improvement
Last Answer : Ans. Mass selection
Description : Mendal works on the 7 contrasting characters of crop
Last Answer : Ans. Garden pea
Description : A situation in which a crop needs more of a given nutrient yet has shown no deficiency symptoms
Last Answer : Ans. Hidden Hunger
Description : Symbiotic N2 fixing bacteria in leguminous crop.
Last Answer : Ans. Rhizobium
Description : The green manure crop having both stem and root nodulation
Last Answer : Ans. Sesbania rostrata
Description : The most widely used green manure crop
Last Answer : Ans. Sunhemp (Crotalaria juncea)
Description : The study of soils in relation to crop growth.
Last Answer : Ans. Edaphology
Description : Which green house gas linked with rice crop?
Last Answer : Ans. Methane (CH4 )
Description : The optimum temperature for better crop production is between
Last Answer : Ans. 18 – 24°C
Description : State having highest forest area in India
Last Answer : Ans. M.P.
Description : The difference between highest and lowest value of the series
Last Answer : Ans. Range
Description : Highest papain yielding variety
Last Answer : Ans. Pusa majesty
Description : Which fruit has the highest Vitamin A?
Last Answer : Ans. Mango
Description : Highest consumption of pesticides found in
Last Answer : Ans. Cotton (54%) (11) Sugarcane
Description : The temperature at which highest percentage of seed germination occurs in short period of time
Last Answer : Ans. Optimum temperature
Description : Potassic fertilizer containing highest amount of K2O
Last Answer : Ans. Muriate of potash/KCl (60%K2O)
Description : Mean applied when deals with rate, price and speed of a vehicle
Last Answer : Ans. HM
Description : The zone at which TP increases but at decreasing rate
Last Answer : Ans. Rational zone (Stage – II)
Description : The formulae of Rate of Turn Over
Last Answer : Ans. Rate of Turn Over =
Description : Per hectare of seed rate of marigold
Last Answer : Ans. 1.2-1.5 kg/ha
Description : Seed rate of knol khol is
Last Answer : Ans. 1-1.5 kg/ha
Description : Seed rate of cauliflower is
Last Answer : Ans. 500-600 gm/ha
Description : Seed rate of cabbage is
Last Answer : Ans. 350-500 gm/ha