•  Diara cultivation method is followed in cucurbits.
  • Swajaldhara is a drinking water project initiated on December 25, 2002.
  • Sweating is practiced as part of the processing of vanilla beans.
  • Sweet sorghum varieties include RSSV 46, 53, 59, 84, 96, and NSS 216.
  • Fructose is the sweetest sugar among all.
  • Tenera is a hybrid variety of oil palm.
  • A tensiometer is used for measuring soil moisture.
  • The term 'Heterosis' was given by Shull.
  • Terminal shoots of brinjal that appear withered indicate infestation by Leucinodes orbonalis (brinjal fruit & shoot borer).
  • Terminator Seed Technology was developed by Delta & Pine Land Company, USA, which was later acquired by Monsanto.
  • Terminator technology is recently used in cotton.
  • Termites belong to the order Isoptera or Blattodea.
  • Tetrasaccharides contain stachyose.
  • Tetrasomic refers to 2n + 2.
  • Tetrastychus is a potential egg parasite in rice fields, infesting stem borers and leaf folders.
  • An example of a C3 weed is Bathua (Lambsquarter).
  • Thai Sac Brood Virus (TSBV) causes disease in honeybees.
  • Tharparkar is a dual-purpose breed of cattle.
  • Tachinid parasite of Opisina is Spoggosia.
  • Tall lanky tillers and aerial adventitious roots in rice indicate foot rot disease.
  • Tape recorders, radios, and telephones are audio aids.
  • Turpentine oil is prepared from pine trees.
  • Taungya system refers to hill cultivation.
  • The tea mosquito bug is a major pest of cashew.
  • Dieback in cashew is caused by the fungus Lasiodiplodia theobromae.
  • Technical form of insecticide has a purity of 80-96%.
  • The Technology Mission on Pulses and Oilseeds (TEMPO) was started in 1986.
  • Television is a type of projected audio-visual aid.
  • The seed rate of sorghum is 9-12 kg/ha.
  • Fertilizer application through irrigation is known as fertigation.
  • The temperature required for bolting in onion is < 15°C.
  • “Tenera” is a hybrid between Dura and Pisifera.
  • The act of identifying and removing undesired plants from agricultural fields is known as roguing.
  • The adults that are spiny and black, infesting the upper surface of brinjal leaves, are Urentius (lace bug).
  • Agronomic measures are used to reduce erosion where the slope is less than 2%.
  • The air-borne disease of rice is rice blast (Pyricularia oryzae).
  • The alternate crops recommended to sow under late onset of monsoon include castor, greengram, cowpea, and sunflower.
  • The amount of soil moisture or water content held in soil after excess water has drained away is called field capacity (FC).
  • Bench terracing is usually practiced on slopes ranging from 16-33%.
  • The annual groundwater resource of India is 50 M ha m.
  • The apparent diameter of the water molecule is 0.25 mm.
  • The highest award presented to an agricultural scientist in the country is the Rafi Ahmad Kidwai award.
  • The % of pure seed prescribed as per minimum seed certification standards (1971) for truthfully labeled paddy seed is 97%.
  • The 'C' horizon of soil represents parental material.
  • The 'father of modern genetics' is Gregor John Mendel.
  • The 'filler tree technology' is associated with the quincunx system.
  • The 'retreating monsoon' is also known as the North East Monsoon.
  • The first function performed in the marketing of agricultural commodities is packing.
  • The three basic principles of field experimentation are replication, randomization, and local control.
  • The three Rs of credit are returns, repayment capacity, and risk-bearing ability.
  • The ability of a seed to germinate is called seed viability.
  • The ability of seed to grow is known as vigor.
  • The absorption of the solar spectrum by leaves is very high in the red and blue bands.
  • The accepted theory of Mendel is the law of segregation.
  • The atmospheric wind velocity is measured using an anemometer (Robinson's cup anemometer).
  • The attack of the 'Gundhi bug' (rice bug) can be recognized by an unpleasant odor from the paddy field.
  • The attraction of solid surfaces for water molecules is called adhesion.
  • The author of the book 'The Silent Spring' is Rachel Carson.
  • The author of the book “Irrigation Principles and Practices” is Israelson.
  • The authors of the book “Manual on Irrigation Agronomy” are Misra & Ahmed.
  • The average of the sum of squares of the deviation about the mean is called variance.
  • The average value for a character of the two parents of the concerned hybrid is known as mid parent or average heterosis.
  • The average weight of very fine fiber is < 3.00 mg.
  • The average yield of chickpea in irrigated conditions in India is 12-15 qt/ha.
  • The average yield of mung in India is 12-15 qt/ha.
  • The application of the same fertilizer more than once to a crop is known as split application.
  • The area of land represented by one soil profile is called a pedon.
  • The area under forest land in India is 67 million hectares (20.36%).
  • Areas receiving average annual rainfall > 1150 mm are categorized as rainfed farming.
  • The arrangement of colorful potted plants in different tiers around a central object (like a tree trunk or lamp post) is called a trophy.
  • The variety of wheat that is resistant to all three rusts is Choti Lerma.
  • The arrangement of soil particles into groups or aggregates is known as soil structure.
  • The cultivation of two or more crops of different heights simultaneously on a certain piece of land is called multistoried cropping.
  • The artificial application of water to supply moisture essential for plant growth is termed irrigation.
  • The book on weed management is written by T.K. Das.
  • Tip burn of paddy is due to reduced O2 and N2 under submerged conditions.
  • The basis of the Cobb-Douglas production function is constant elasticity of substitution.
  • The concept of an ecological pyramid was first introduced by Charles Elton
  • World Environment Day is celebrated on 5th June 
  • SO2 and NO2 are the gases responsible for acid rain 
  • Reduction of nitrates and nitrites to nitrogen by microorganisms is denitrification 
  • A wooden wetland in which water is near or above ground level is swamp 
  • Rapid growth of algae in surface waters due to an increase in inorganic nutrients is algal bloom 
  • A chemical or physical agent that causes Cancer is a carcinogen 
  • Accumulation of nutrients in a lake or pond due to human intervention or natural process is eutrophication 
  • Agriculture in which several plant species are grown simultaneously to reduce insect infestation and disease is hetero culture 
  • Troposphere is up to 15 km from the Earth surface upwards 
  • The stratosphere is 15 to 45 km from the surface of the earth upwards 
  • Mesosphere is the layer between stratosphere and thermosphere 
  • The ionosphere is resting about the mesosphere up to the height of about 130 km earth surface 
  • Inter tidal zones are the area of shoreline between low and high
  • Pollutant free alternative to petrol for automobiles is propane 
  • The gas does not pollute air is nitrogen dioxide 
  • The core of lithosphere mainly consists of calcium and magnesium 
  • Microorganism responsible for formation of H2S is De sulfovibrio vulgaris
  • NO2 gas contributes least in the greenhouse 
  • The gas responsible for Bhopal gas tragedy is methyl isocyanate 
  • Fungi are plant that lack oxygen 
  • Biodegradable water can be converted to useful substances with the help of earthworms
  • The reason inhibited by living organisms on land ocean in atmosphere is biosphere 
  • Phototrops are the plants which produce food themselves through photosynthesis 
  • Grassland ecosystem producers are of large size 
  • The first major human source of air pollution was fire 
  • Moment of matter within are between ecosystem is called biochemical cycle 
  • Most poisonous pollutant is arsenic 
  • Swine Flu disease is caused by virus h1n1 
  • Colorless and non crossing air pollutant is SO2 
  • Sphere of water is called hydrosphere 
  • The microbacteria which live only in presence of free oxygen is aerobic 
  • The microbial count of portable water should be less than  <100 cfu per ml 
  • Microorganism responsible for the conversion of co to CO2 is acetobacter.
  • Sources of soil pollutants are herbicides pesticides and weedicides 
  • DDT is an agrochemical 
  • The term ecology was first defined by the German biologist earnest haeckel in the year 1866 
  • Maximum concentration of ozone is found in lower stratosphere 
  • Global warming is mainly due to greenhouse gases 
  • Forest conservation act was made in the year 1980 
  • The test which has self purification capacity of water bodies bod test 
  • Salt efflorescences is the accumulation of excessive salt in the soil system which makes soil unfit for cultivation
  • Fluoride pollution mainly effects teeth 
  • Hydrocarbons present in the air are primary air pollutants which are aromatics napthalenes, olefines and paraffins 
  • Chromium is a metal toxic in drinking water even at low concentration 
  • Bacteria that obtains both energy and material from organic sources is heterotrophs 
  • The specific gravity of sewage is slightly more than one 
  • Most commonly used disinfectant in water purification is chlorine 
  • Instrument used for measuring the concentration of ozone in air is ozonometer 
  • Wind speed is measured by anemometer 
  • The term ecosystem was coined and developed by Arthur G Tansley
  • The organism who eat dead organic matter are decomposers 
  • Operate pyramid of biomass in forest ecosystem is producer-  herbivorous- carnivorous.
  • In bugs, forewings are modified into hemelytra.
  • Hind wings in bugs are membranous.
  • In flies, hind wings are reduced to halteres.
  • IISR-Varada, IISR-Rejatha, and IISR-Mahima are varieties of dry ginger.
  • The isotherm is an imaginary line representing equal temperature.
  • Imbibition concept was coined by Julius von Sachs.
  • Immobile element in plants is calcium.
  • Immobile element in soil is phosphorus.
  • Imperator is a carrot variety.
  • Imperial Agricultural Research Institute was started in 1903.
  • Yellowing of lower leaves indicates nitrogen deficiency.
  • In a seed, the food storage tissue is called endosperm/cotyledon.
  • In a soil profile, 'A' & 'B' horizons together are called solum.
  • In a soil profile, the A2 horizon is referred to as the eluvial zone.
  • A3, B1, & B3 horizons in a soil profile are known as transitional layers.
  • Linseed is grown for both fiber and oil.
  • In India, nearly 45% of crop loss is due to weeds.
  • Around 80% of plant protection chemicals used in India are insecticides.
  • Community Development Programme in India started in 1952.
  • Seed certification in India is voluntary.
  • Seed labeling in India is compulsory.
  • The Seeds Act came into effect in India in 1969.
  • Pusa Sanyog is a cucumber variety.
  • In lowland rice, fertilizer is applied in the reduced zone only.
  • In LSD, rows, columns, and treatments are equal to replications.
  • Bacteria and actinomycetes thrive better in soils with intermediate & higher pH values.
  • The most critical irrigation stage in paddy is panicle initiation.
  • In pesticide formulations, 'AF' stands for aqua flowable.
  • In insects undergoing complete metamorphosis, the stage between larva and adult is called pupa/chrysalis.
  • Control operations for Lepidopteran pests should target the larval stage.
  • In diffusion, particles move from higher to lower concentration regions.
  • Drip irrigation saves 50-70% of water.
  • Evapotranspiration involves water loss from soil and plant surfaces.
  • Grasshoppers have 18 spiracles.
  • Fertile males in honeybee colonies are called drones.
  • Humus has a C ratio of 10:1.
  • Imperial Agricultural Research Institute (IARI) was started at Pusa in Bihar in 1903.
  • Around 20% of crop loss in India is caused by diseases.
  •   Around 30% of crop loss in India is caused by insects.
  • In the rag doll method of testing seed germination, flannel cloths used are sized 35cm × 27.5cm.
  • In RBD, the number of blocks is equal to the number of replications (b = r).
  • Bacterial leaf blight in rice is caused by Xanthomonas spp (bacteria).
  • Dapog seedlings in rice are ready for transplanting at 11-14 DAS.
  • India ranks 2nd in rice production.
  • Chandrasankara is the hybrid variety of coconut recommended for root wilt affected areas.
  • In seed technology, ‘PBR’ stands for Plant Breeders Rights.
  • In seed technology, ‘PLS’ means Pure Live Seed.
  • In seed technology, ‘TLS’ refers to Truthfully Labelled Seeds.
  • Soil sampling collects soil up to a depth of 9 inches from the surface.
  • In soil science, ‘WHC’ means Water Holding Capacity.
  • Polythene sheets used in soil solarization are of 100-150 gauge thickness.
  • In pesticidal formulations, ‘DP’ means Dustable Powder.
  • In pesticidal formulations, ‘EC’ stands for Emulsifiable Concentrate.
  • In pesticidal formulations, ‘G’ means Granule.
  • In pesticidal formulations, ‘SL’ means Soluble Liquid.
  • In pesticidal formulations, ‘SP’ refers to Soluble Powder.
  • In pesticidal formulations, ‘WP’ means Wettable Powder.
  • In pesticidal formulations, ‘WSC’ stands for Water Soluble Concentrate.
  • In plant pathology, ‘MLO’ means Mycoplasma Like Organism.
  • In plant protection, ‘Bt’ refers to Bacillus thuringiensis.
  • In plant protection, ‘GV’ stands for Granulosis Virus.
  • In plant tissue culture, ‘HEPA’ means High Efficiency Particulate Air.
  • In the Northern Hemisphere, Stevenson’s screen door opens towards the North.
  • In the Northern Hemisphere, wind moves around anticyclones in a clockwise direction.
  • In the Northern Hemisphere, wind moves around cyclones in an anticlockwise direction.
  • Rice plant leaves are arranged in an alternate manner.
  • In the Southern Hemisphere, wind moves around anticyclones in an anticlockwise direction.
  • In the Southern Hemisphere, wind moves around cyclones in a clockwise direction.
  • In the term ‘LC 50’, LC stands for Lethal Concentration.
  • In the term ‘LD 50’, LD stands for Lethal Dose.
  • In waterlogged rice fields, atmospheric nitrogen can be fixed to the soil by BGA.
  • Mitosis occurs in somatic cells.
  • Meiosis occurs in reproductive cells.
  • Producers are of large size in grassland ecosystems.
  • The IW/CPE ratio of rice is 1.2 (highest).
  • In soil testing laboratories, the flame photometric method estimates potassium.
  • In soil testing laboratories, the Brays method is used for estimating phosphorus.
  • Gypsum requirements in soil testing are found using Schoonorvar’s method.
  • Organic carbon in soil testing is estimated using the calometric method.
  • Soil nitrogen content is calculated from organic carbon.
  • CO2 content is generally higher during summer and lower during winter in soil.
  • Particle density of mineral soil is expressed in gram/cc.
  • In strip plot design, the interaction is tested with higher precision.
  • The most critical irrigation stage for sugarcane is formative.
  • Nitrogen, oxygen, and carbon dioxide account for about 99% of the atmosphere.
  • Increasing industrialization is causing much danger to man’s life by polluting the environment.
  • India has an arable land of 168 million hectares.
  • India has the largest area in the world under pulse crops.