•  1 atmosphere = 1036 cm of water.
  • The major constituent of poultry feed is Maize.
  • The major genetic constituent of a chromosome is DNA.
  • The market used for durable goods is the National market.
  • The market used for food grains is the Regional or State market.
  • The market that is permanent in nature is called the Secular market.
  • The material contained in vacuoles is known as Cell sap.
  • The maximum number of treatments adopted in RBD (Randomized Block Design) is 20.
  • The maximum phosphorus availability in most soils occurs in the pH range of 6.0 to 6.5.
  • The maximum pore space is found in Clay soil.
  • The molecule that helps in decoding genetic information carried by DNA is RNA.
  • In the sprinkler irrigation method, pressure and discharge rate should be Pressure: 2.5-4.5 kg/cm²; Discharge rate: >1000 lit/hr.
  • The more nutrient-exhaustive family is Poaceae (Graminae).
  • The most abundant biomolecules on earth are Carbohydrates.
  • The most abundant protein present in the world is Rubisco.
  • The most accepted theory of water absorption is the Transpiration pull theory.
  • The most appropriate and effective type of crop cultivation in forests is Intercropping.
  • The most appropriate design when not all factors are equally important in experimentation is the Split Plot Design (SPD).
  • The most appropriate transformation for percentage is the Angular transformation.
  • The most common size of a poster is 50 cm x 75 cm.
  • The most common symptoms to judge the maturity of sugarcane are Cane becomes brittle, produces a metallic sound, and breaks easily at nodes.
  • The milling recovery of rice is 70%.
  • The minimum desirable limit of moisture in paddy seeds is 12%.
  • The minimum germination percentage prescribed for cucumber seed is 60%.
  • The minimum price at which the government is prepared to buy agricultural commodities is known as the Minimum Support Price (MSP).
  • The Minimum Wages Act was enacted by the Government of India in 1948.
  • The moisture content at the harvesting stage of wheat is 25-30%.
  • The moisture content of soil at which plants permanently wilt and will not recover is called the Permanent Wilting Point (PWP).
  • The moisture content of soil between Field Capacity and Permanent Wilting Point is called Available moisture.
  • The moisture deficit condition occurs when the amount of water vapor available in the soil is insufficient to meet the demand of potential evapotranspiration, known as Drought.
  • The molecule that encodes genetic information is DNA.
  • The most common pit size for fruit planting is 1 m × 1 m × 1 m.
  • The most dangerous disease of sugarcane is Red rot disease.
  • An excellent device for measuring small flows is the 900- “V” notch weir.
  • The most destructive phase of the bacterial blight of rice is known as Kresek.
  • The most dominant mineral in the earth's crust is Feldspar (48%).
  • The most dominant soil order in India is Entisol.
  • The most frost-affected crop among all field crops is Gram.
  • The most ideal agency for supplying credit to farmers in rural areas is Cooperatives.
  • The most ideal stage of bael for making preserve is the Mature green stage.
  • The most important agroforestry practice is Acacia leucophloea + Cenchrus setigerus.
  • The most important critical period of maize is during Tasseling and silking.
  • In a 900- “V” notch weir, discharge may be computed by Q = 0.0138 H^2.5.
  • The most important critical stage of wheat is Crown root initiation (CRI 20-25 DAS).
  • The most common system of farming observed in India is Peasant farming.
  • The most common varieties of jute are JRC-321 (Sonali), JRC-212 (Sabuj Sona), JRC 7447 (Shyamli), Hybrid C (Padma), KC1 (Joydev), etc.
  • The most common varieties of linseed are Jawahar-7, 17, 18, 552, Kiran, Mukta, Sweta, Gourav, Shital.
  • The most common varieties of soybean are JS-2, 335, Indira Soya-9, PK-472, 1024, Gaurav, Ankur, Brag, Clark.
  • The most common varieties of sunflower are Modern, MSFH-8, 17, Jwalamukhi, KBSH-1, JS-1, Sunrise selection.
  • The most common water flow measuring device that measures water flow in an open conduit is the Parshall/Venturi flume.
  • The most commonly used design in experiments is Randomized Block Design (RBD).
  • The most critical stage of sugarcane for irrigation is the Formative stage (60-130 days after planting).
  • In a drip system, the discharge rate of water per dripper is generally 1-8 lit/hr at a pressure of 1.5-2.5 kg/cm².
  • The Typhoon system of drip irrigation is used in Sugarcane.
  • The movement of nutrient ions and salts along with moving water is known as Mass flow.
  • The National Agricultural Insurance Scheme (NAIS) was introduced in the country from Rabi 1999-2000.
  • The National Agriculture Policy (NAP) was announced on 28th July 2000.
  • Soil moisture tension at Permanent Wilting Point (PWP) is about -15 bars or 15 atmospheres.
  • The nearest thermal layer to the earth’s surface is the Troposphere.
  • The negative logarithm of H+ ion concentration is known as Soil pH.
  • The net assimilation rate is expressed in terms of g cm⁻² day⁻¹.
  • The net capital ratio is given by Total assets / Total liabilities.
  • The neutralizing power of a liming material is expressed in K/gs of Calcium Carbonate.
  • The new botanical name of tomato is Solanum lycopersicon.
  • The new name of the Agricultural Prices Commission is the Commission for Agricultural Costs and Prices.
  • The most important enzyme involved in photosynthetic CO2 fixation in C3 plants is Rubisco.
  • The most important enzyme involved in photosynthetic CO2 fixation in C4 plants is PEP carboxylase.
  • The most important soil group of India is Alluvial Soils.
  • The most important unit of farm management is the Production unit.
  • The most popular mechanical measure to control soil erosion and conserve is Contour Bunding.
  • The most popular method for potato planting is Ridge and Furrow.
  • The most prominent and adopted cropping pattern in India is Rice - Wheat.
  •  Glyphosate is a non-selective herbicide.
  • Indian mustard is classified as Brassica juncea.
  • Mass flow is affected by transpiration.
  • The carbon content in organic matter is 58%.
  • Desi cotton is known as Gossypium arboreum.
  • Metric suction is measured by a tensiometer.
  • The nitrogen bio-fertilizer for wheat is Azotobacter.
  • Brix measures in terms of total soluble solids (TSS).
  • Vertical mulch is used in black cotton soils.
  • The design used when the fertility gradient is in two directions is LSD (Least Significant Difference).
  • The criteria of essentiality were given by Arnon & Stout.
  • The nucleus was discovered by Robert Brown.
  • Segregation occurs during meiosis only.
  • The longest mitotic phase is prophase.
  • Tetrad is seen in pachytene.
  • Chiasma is observed during diplotene.
  • Multi lines in wheat are produced by back cross breeding.
  • The selection procedure that provides the maximum improvement in the base population is pure line selection.
  • The most dangerous disease of potato is late blight.
  • Phyllody disease in plants is caused by mycoplasma.
  • The father of plant nematology is Bastian.
  • Rice production is highest in the world in China.
  • Single super phosphate contains 12% sulfur.
  • The most prominent soil group of India is alluvial soil.
  • Muriate of potash is chemically known as KCl.
  • The highest contribution to vegetable oil production is from Groundnut.
  • The explosive fertilizer is ammonium nitrate.
  • The most mutation-tolerant plants are polyploids.
  • The person acting as a connecting link between higher department officials and the farming community in the T & V system is known as Village Extension Worker.
  • The pest that attacks all parts of the plant is the termite.
  • White grubs prefer to lay eggs in sandy soil.
  • Pesticide consumption in India is 450 g/ha.
  • The micro-nutrient deficient in India is zinc (Zn).
  • Mantek disease of rice is caused by the rice root nematode.
  • The international pest is Schistocerca gregaria.
  • The first fisheries university in India was CIFE, Mumbai.
  • The Indian Institute of Tropical Meteorology is located in Pune.
  • The second Indian recipient of the World Food Prize was Dr. Varghese Kurien.
  • A spike tooth harrow is a type of secondary tillage implement.
  • India ranks first in fruit production.
  • Club root of cauliflower is caused by Plasmodiophora brassicae.
  • Sheath blight of rice is caused by Rhizoctonia solani.
  • The father of microbiology is Louis Pasteur.
  • The bacterium was discovered by Anton van Leeuwenhoek.
  • The variety of wheat resistant to all three rusts is Chotilerma.
  • In sugarcane, taking a ratoon crop is advisable only for one time.
  • Wilt disease is a soil-borne disease.
  • The vector of leaf curl disease in cotton is the whitefly.
  • ‘Flared square’ symptoms in cotton are due to the spotted bollworm.
  • The number of electrons required for the conversion of NO₃⁻ to NH₄⁺ is 8.
  • The conversion of fat to sugar occurs in glyoxysomes.
  • The net requirement for assimilation of CO₂ in C4 plants is 5.
  • The primary electron acceptor in PS II is pheophytin.
  • Gneiss is a metamorphic rock.
  • Under the USDA system, silt is classified as having a particle size of 0.02 to 0.002 mm.
  • Hygroscopic water is held at a tension of 31 or more atmospheres.
  • Kaolinite is a 1:1 type layer silicate.
  • Clays are secondary minerals.
  • CAN is a neutral fertilizer.
  • The most widely used additive for correcting soil acidity is lime.
  • The largest importer of cut flowers in the world is Germany.
  • The density of water is maximum at 4°C.
  • The diara cultivation method is followed in cucurbits.
  • The irrigation method suitable for saline soils is the flood method.
  • The role of extension education in India is performed by State Agricultural Universities (SAUs).
  • Extension is a two-way flow of message.
  • The oldest method of selection is mass selection.
  • The limit of the regression coefficient is 0 to 1.
  • A highly salt-tolerant crop is barley.
  • The formation of male flowers is induced by GA3.
  • Cytokinin is mostly synthesized in root tips.
  • The recent method of controlling bollworms is Bt. transgenic plants.
  • Orobanche is a parasite associated with tobacco.
  • Dr. B.P. Pal is associated with breeding.
  • The art of giving shape to shrubs resembling a figure is called topiary.
  • The dwarf variety of mango is Amrapali.
  • Mango malformation can be checked by NAA spray.
  • Photo-respiration occurs in chloroplast.
  • Photosynthesis is an oxidation-reduction process.
  • The root-promoting hormone is IBA.
  • The fruit of rose is known as hips.
  • The concentration of sugar used for preservation is 60 – 70%.
  • The fruit crop that requires the highest number of irrigations is banana.
  • Photosystem II is absent in C4 plants.
  • The conversion of fat into carbohydrate occurs in the glyoxylate cycle.
  • Peroxisome is a single membrane organelle.
  • The main site for the dark reaction of photosynthesis is the stroma.
  • The F2 ratio for complementary interaction is 9:7.
  • The shortest phase of all the mitosis phases is anaphase.
  • The longest phase of all the mitosis phases is prophase.
  • HYVP, IADP, training & visit, and group farming are agricultural extension programs of India.
  • Mulching, contour, and mixed cropping are agronomic methods of soil and water conservation.
  • Urea is an amide fertilizer.
  • Examples of informal gardens include the English garden and Japanese garden.
  • Examples of formal gardens include Mughal garden, Italian garden, Vrindavan garden, and Persian garden.
  • Examples of heterocyclic nitrogenous fungicides include Captafol and Captan.
  • Examples of nematicides include Aldicarb, Dimethoate, and Phorate.
  • Mangosteen is an example of an obligate apomict.
  • Examples of organic sulphur fungicides include Thiram, Ziram, Ferbam, Zineb, and Maneb.
  • Triacontanol is a growth stimulant obtained from the leaves of lucerne.
  • Zinc sulphate is an example of a safener in pesticide formulations.
  • Soap flour is an example of a spreader in pesticide formulations.
  • Fish oil and linseed oil are examples of stickers in pesticide formulations.
  • Trichogramma chilonis is an example of a parasitoid.
  • The low-pressure area near the equator is called the doldrums or ITCZ (Intertropical Convergence Zone).
  • Bacillus thuringiensis is an example of an entomopathogen.
  • Fumigation is an effective method for controlling pests of stored food grains.
  • Examples of biofertilizers include Rhizobium, Azotobacter, Azospirillum, blue-green algae, VAM (Vesicular-Arbuscular Mycorrhizae), AMF (Arbuscular Mycorrhizal Fungi), and phosphate solubilizing bacteria and fungi.
  • Nitrogenase is the enzyme of nitrogen reduction.
  • Examples of primary clay minerals present in the soil include quartz, feldspar, and mica.
  • Examples of secondary clay minerals include montmorillonite, illite, and calcite.
  • Granite is an example of acidic igneous rock.
  • Examples of emulsifiers in pesticide formulations include sodium oleate and triethanol amine.
  • Examples of inorganic insecticides include arsenic compounds and fluorine.
  • Examples of anti-fungal antibiotics include Aureofunginsol and streptomycin.
  • Examples of cut flowers include rose, orchid, gladiolus, and anthurium.
  • Examples of cyclodiene group insecticides include heptachlor, aldrin, and endrin.
  • Gelatin is an example of a deflocculating agent in pesticide formulations.
  • Examples of fiber crops include cotton, jute, sunhemp, agave, and flax.
  • Examples of green manure crops include Glyricidia, Daincha, and Subabul.
  • Examples of predators include ladybird beetles, tiger beetles, and Lycosa spiders.
  • Examples of vegetable crops include tomato, brinjal, amaranthus, and snake gourd.
  • Examples of antibacterial antibiotics include Agimycin and Plantomycin.
  • Aureofunginsol is an example of an antifungal antibiotic.
  • Examples of chemosterilants include Tepa and Metepa.
  • Examples of insects with complete metamorphosis include moths, butterflies, beetles, bees, wasps, ants, and fleas.
  • Examples of insects with incomplete metamorphosis include grasshoppers, locusts, bugs, aphids, cockroaches, termites, and crickets.
  • Examples of insects without metamorphosis include silverfish and springtails.
  • Examples of cultural control of insect pests include mixed cropping, tilling, and trap cropping.
  • The crop that has the highest K+ uptake is potato.
  • Trichogramma sp, Telenomus sp, and Tetrastychus sp are egg parasites.
  • Examples of engineering (mechanical) methods of soil and water conservation include basin listing, subsoiling, and contour bunding.
  • Molybdenum is the element of nitrate reduction.
  • Fusarium pallidoroseum is an entomopathogenic fungus used against black pea aphid of cow pea.
  • Metarrhizium anisopliae is an example of an entomopathogenic fungus.
  • Examples of epiphytic orchids include Dendrobium, Oncidium, Cattleya, Cymbidium, and Phalaenopsis.
  • Sulphur mix is an example of an eradicant fungicide.
  • Examples of erosion permitting crops include sorghum, maize, and tapioca.
  • Examples of erosion resisting crops include vetiver, groundnut, and horse gram.
  • The effect where vertical heat transfers from warmer to cooler crop areas is called the oasis effect.
  • Examples of condiments include coriander and cumin.
  • Examples of cool season crops include barley, wheat, potato, and carrot.
  • Avermectin and Milbemycin are insecticides of Actinomycetic origin.
  • Spinosad, Mycotal, and Vertalec are insecticides of fungal origin.
  • Virtuss, Gypchek, and Neochek are insecticides prepared from viruses.
  • Endosulfan is an insecticide that was recently banned due to public health hazards.
  • Nephoscope is an instrument used to measure the height, movement, and velocity of clouds.
  • Examples of oilseed crops include groundnut, sunflower, and sesame.
  • Mericlone is an orchid plant made through meristem culture.
  • Neris toxin is an organic insecticide of animal origin.
  • Examples of organic insecticides of plant origin include nicotine, pyrethrine, and rotenone.
  • A predator is an organism that eats more than one other organism during its life.
  • Examples of organochlorine insecticides include DDT and BHC (banned).
  • Examples of organophosphorus fungicides include Ediphenphos, Kitazin, and Triodemefon.
  • Examples of organophosphorus insecticides include Quinolphos, Phosphamidon, Dimethoate, Monocrotophos, and Phorate.
  • The horizontal heat transfer from warmer areas to cooler areas is known as the cloth line effect.
  • Examples of exotic breeds of cattle include Brown Swiss, Holstein Friesian, Ayrshire, Guernsey, and Jersey.
  • Examples of extension aids include charts, posters, leaflets, pamphlets, bulletin boards, and slide shows.
  • Zero tillage is an extreme form of minimum tillage.
  • Base saturation is an important index of soil fertility in arid soils.
  • The mango hopper is an important pest of mango.
  • Examples of Indian poultry breeds include Aseel, Chittagong, Ghagus, Karaknath, and Tellicherry.
  • Remote sensing is an indirect method of assessment of pests.