• An important disease in citrus caused by a virus is citrus tristeza virus.
  • An important method for increasing soil fertility is green manuring.
  • An important pest of maize is the European corn borer (Ostrinia nubilalis).
  • An important practice for weed control is mulching.
  • An important concept in integrated pest management is the economic threshold level (ETL).
  • An important process of nitrogen fixation in legumes is symbiosis with Rhizobium.
  • An important role of mycorrhizal fungi is enhancing nutrient uptake in plants.
  • An important practice for preventing soil erosion is planting cover crops.
  • An important characteristic of loamy soil is its balanced texture of sand, silt, and clay.
  • An important factor influencing plant growth is soil moisture content.
  • An important biological control agent for aphids is the ladybug (Coccinellidae).
  • An important soil property affecting drainage is permeability.
  • An important source of organic matter for soil is compost.
  • An important practice for enhancing biodiversity is crop rotation.
  • An important type of plant used for phytoremediation is sunflowers.
  • An important factor for successful composting is aeration.
  • An important practice for pest management in organic farming is the use of neem oil.
  • An important trait for drought-resistant crops is deep root systems.
  • An important species used for intercropping is legumes with cereals.
  • An important indicator of soil health is soil microbial activity.
  • An important practice to increase organic matter in soil is cover cropping.
  • An important element required for photosynthesis is carbon dioxide.
  • An important role of earthworms in soil is aeration and organic matter breakdown.
  • An important technique for soil analysis is soil sampling.
  • An important method for increasing crop diversity is agroforestry.
  • An important factor affecting plant health is nutrient availability.
  • An important practice to improve soil structure is subsoiling.
  • An important feature of sustainable agriculture is minimizing chemical inputs.
  • An important crop rotation sequence for enhancing soil fertility is legumes followed by cereals.
  • An important factor affecting crop yield is climate variability.
  • An important characteristic of clay soil is its high water retention capacity.
  • An important pest in horticultural crops is the spider mite.
  • An important indicator of soil salinity is electrical conductivity (EC).
  • An important method of controlling pests is cultural control practices.
  • An important type of agriculture focusing on local food production is community-supported    agriculture (CSA).
  • An important benefit of agroecology is increased resilience to climate change.
  • An important tool for precision agriculture is GPS technology.
  • An important property of sandy soil is its quick drainage.
  • An important pest of fruit crops is the fruit fly.
  • An important factor for seedling establishment is soil temperature.
  • An important disease management strategy is crop rotation with resistant varieties.
  • An important benefit of using biofertilizers is enhanced nutrient availability.
  • An important practice for managing nutrient runoff is buffer strips.
  • An important characteristic of sustainable farming is preserving natural resources.
  • An important method for conserving water in agriculture is rainwater harvesting.
  • An important soil amendment to improve acidity is lime.
  • An important type of soil that retains moisture well is clayey soil.
  • An important strategy for reducing agricultural waste is composting.
  • An important crop used in agroforestry systems for nitrogen fixation is Gliricidia.
  • An important method for assessing plant health is leaf analysis.
  • An integrated approach to control pests is called integrated pest management (IPM).
  • An insecticide that can kill on contact is pyrethroid.
  • An insecticide that is non-selective and can kill any type of plant is glyphosate.
  • An insect pest of stored grains is the rice weevil (Sitophilus oryzae).
  • An irrigation method where water is applied directly to the root zone is called localized irrigation.
  • An irrigation system using a network of pipes to deliver water is called a drip irrigation system.
  • An organic compound used in agriculture as a growth regulator is gibberellin.
  • An organism that feeds on decomposing organic matter is called a detritivore.
  • An organism that thrives in low oxygen conditions is called an anaerobe.
  • An organic farming method that uses only natural inputs is called organic agriculture.
  • An important by-product of sugarcane is molasses.
  • An essential element for chlorophyll synthesis is magnesium.
  • An extension method where information is disseminated through group discussions is called                  participatory extension.
  • An important nutrient for root development in plants is phosphorus.
  • An important parameter for assessing soil fertility is pH.
  • An important pest of cotton is the cotton bollworm (Helicoverpa armigera).
  • An important practice in organic farming is crop rotation.
  • An indicator of soil health is the presence of earthworms.
  • An integrated approach to land management is called integrated land use planning.
  • An invasive weed species in India is Lantana camara.
  • An important process in the nitrogen cycle is nitrification.
  • An important source of energy for plants is sunlight.
  • An important variety of rice for Basmati production is Basmati 370.
  • An important vitamin for plant growth is Vitamin A (retinol).
  • An essential process for plant respiration is glycolysis.
  • An important practice for soil conservation is contour plowing.
  • An essential plant nutrient often deficient in sandy soils is potassium.
  • An important pest management technique using natural predators is biological control.
  • An important component of the food web is decomposers.
  • An important property of soil that affects water retention is texture.
  • An important trait in hybrid seeds is disease resistance.
  • An important variable in agricultural research is the control group.
  • An important trait in genetically modified crops is herbicide tolerance.
  • An important type of farming that combines crops and livestock is mixed farming.
  • An important element for protein synthesis in plants is nitrogen.
  • An important feature of agroforestry systems is biodiversity.
  • An important type of soil erosion caused by water is sheet erosion.
  • An important water-conserving technique in agriculture is mulching.
  • An important type of agriculture practiced in hilly areas is terrace farming.
  • An important method for increasing crop yield is precision agriculture.
  • An important indicator of soil compaction is bulk density.
  • An important pest of vegetables is the aphid.
  • An important practice for improving soil structure is organic matter addition.
  • An important species used for nitrogen fixation in crops is Rhizobium.
  • An important strategy for increasing agricultural sustainability is agroecology.
  • An important type of irrigation that minimizes evaporation loss is sprinkler irrigation.
  • An important method for soil salinity management is leaching.
  • An important factor affecting seed germination is temperature.
  • An important practice for managing crop pests is scouting.
  • An important principle of organic farming is sustainability.
  • A working soil sample weighs 500 gm.
  • A x B = F1 is a single cross hybrid.
  • A young cucumber suitable for pickling is a gherkin.
  • The flowering setting hormone is NAA.
  • A+B+C horizons together are called regolith.
  • A+B+parent material is referred to as regolith.
  • AAY means Antyodaya Anna Yojana.
  • The ability of a plant cell to grow and develop into a complete plant is called totipotency.
  • The abiotic environment does not include plants.
  • Abnormal leaf fall of rubber normally occurs in June-August.
  • Abnormal leaf fall (Phytophthora palmivora) is a fungal disease of rubber.
  • About 50-75% of soil erosion by wind is carried out by saltation.
  • Abscisic acid is synthesized from actively growing points.
  • Absorbing water against a concentration gradient using energy from respiration is called active  absorption.
  • Acalypha, Hibiscus, and Ixora are ornamental shrubs.
  • The acarapis mite infests adult bees.
  • Acaricides are pesticides that can kill mites.
  • According to Beaufort’s scale, winds are classified into 12 classes.
  • According to IISS, the particle size of coarse sand is 2 - 0.2 mm.
  • According to NBSSLUP, agro-ecological regions in India are 21.
  • According to the Planning Commission, agro-climatic zones in India are 15.
  • The acid present in ants is formic acid.
  • Acidic soils have more H+ ions and fewer OH- ions.
  • Acidity percentage in pineapple fruit is favored by increased shade.
  • Acid-saline soils have a pH range of 3 to 5.
  • The science, production, and study of grapes is called viticulture.
  • The active ingredient present in Bael is marmelosin.
  • The actual quantity of water held by a certain quantity of air is called absolute humidity (g/m³).
  • Adams fig refers to a banana.
  • Adiantum and Nephrolepis are ferns.
  • Adsali sugarcane crop is planted during July–August (16-18 months).
  • Adult Lepidopterans like fruit moths are pests of crops.
  • The advent of the Green Revolution was in the late 1960s.
  • Aerobic organisms require gaseous O₂ for their activity.
  • African payal (salvinia) is biologically controlled by Cyrtobagous weevils.
  • The recommended herbicide for weed control in pea crop is propanol.
  • AGMARK stands for Agricultural Produce (Grading & Marketing) Act.
  • The AGMARK Act was passed in 1937.
  • AGMARKNET stands for Agricultural Marketing Information Network.
  • The Agricultural Technology Information Centre (ATIC) first started in New Delhi in 1998-99 by          ICAR.
  • The agricultural growth rate target for the 11th five-year plan is 4%.
  • The Agriculture Insurance Company of India Limited has its headquarters in New Delhi (2002).
  • The agriculture sector provides employment to 42.38% of the country's workforce (2019).
  • Agricultural universities established are granted by the Land Grant College.
  • Agroforestry is a form of multiple cropping.
  • Agromet observations are taken twice daily at 7 and 14 hrs LMT.
  • Agromet observatories in agricultural universities are normally B type.
  • Agronomical measures are adopted only where the land slope is less than 2%.
  • The word "Agronomy" is derived from Greek (agros + nomos).
  • Agrostology is the study of fodder grasses.
  • The slogan "Jai Jawan Jai Kisan Jai Vigyan" was given by Atal Bihari Vajpayee.
  • Air layering is also called gooty.
  • Air layering is practiced in jasmine, hibiscus, guava, cashew, and sapota.
  • Air layering was first practiced in China.
  • Air temperature, humidity, pressure, wind speed, and direction in the upper atmosphere are                    measured by radiosonde.
  • Air layering is mostly used in guava, citrus, and pomegranate.
  • Aiswarya is a medium duration (120-125 days) variety of rice suitable for kharif and rabi seasons.
  • Akiochi disease is caused by H₂S toxicity.
  • Alachlor, Butachlor, and Propanil belong to the chemical group amide.
  • The albedo of grass is 20-25%.
  • Albizzia is an ornamental shade tree.
  • Alkaline soil is also called solonetz and black alkali.
  • Alkaline soils have more OH- ions and fewer H+ ions.
  • The alkaloid content present in sorghum leaves is HCN (dhurin alkaloid).
  • All actual expenses in cash and kind incurred in production by the owner-operator are referred to         as   Cost-A.
  • The All India Soil and Land Use Survey headquarters is located at IARI New Delhi.
  • The statement "All insecticides are pesticides, but not all pesticides are insecticides" is true.
  • All populations of different species living and interacting in the same ecosystem are called a community.
  • All weather phenomena (i.e., rain, fog, frost, clouds) occur in the zone of the troposphere.
  • Allahabad Safeda and Lucknow-49 are varieties of guava.
  • Alleppey is a variety of turmeric.
  • The allocation of treatments to different experimental units by a random process is known as randomization.
  • Alphanso is a variety of mango.
  • Alternaria blight of mustard is caused by Alternaria brassicae.
  • Alternaria blight or leaf spot of sunflower is caused by Alternaria helianthi.
  • Alternate forms of a gene are called alleles.
  • The alternate host of black stem rust of wheat in India is Berberis spp.
  • Rhizoctonia bataticola is a disease related to Soybean.
  • The American agricultural scientist who won the Nobel Peace Prize in 1970 is Norman E. Borlaug  (Green Revolution).
  • American/upland/new world cotton is Gossypium hirsutum.
  • The amide form of nitrogen fertilizer is urea.
  • Ammonical fertilizers are not ideal for alkaline soil.
  • The amount of water vapor present in a unit volume of air is called absolute humidity.
  • The amount of water vapor present in a kilogram of air is called specific humidity.
  • Amrapalli is a cross of Dashehari × Neelam.
  • Amritmahal is a draught breed of cattle.
  • An acaricide effective against all stages of the red spider mite and bee mite (Acarapis woodi) is              chlorobenzilate.
  • An aggregation of minute drops of water suspended in the air at higher altitudes is termed clouds.
  • An agro-machinery used for sowing operations is a seed drill.
  • The alternate host of rice stem borer is Panicum repens.
  • An annual flowering plant grown throughout the year is balsam.
  • An appropriate combination of farm enterprises for increasing profitability is called a farming system.
  • An arbor formed of columns supporting trelliswork for climbing plants is known as a Pergola.
  • The art of growing and training a plant to a miniature form with a natural look of old age is called Bonsai.
  • An attention with a sense of concern focused on some object is called interest.
  • The average percentage of solar radiation reaching the earth is 70%.
  • The average size of a raindrop is 2 mm in diameter.
  • An earwig preying on Oryctes rhinoceros is Cheisoches moris.
  • An easy technique of insecticide application in households is an aerosol bomb.
  • An educational process to bring about desirable changes is called extension.
  • The respiratory roots are called pneumatophores.
  • An element making up a constituent of Vitamin B12 is cobalt.
  • An element needed for nodule formation in leguminous crops is boron.
  • An element not essential but useful to rice is silicon.
  • An element responsible for changes in the flower color of hydrangea is aluminum.
  • An energy-spending process is photorespiration.
  • Degradation of land in arid, semi-arid, and dry sub-humid areas by human activities and climatic variation is called desertification.
  • An exact genetic replica of a specific gene or an entire organism is called a clone.
  • An example of a blast sprayer is a hand atomizer or flit pump.
  • An example of trap cropping is bhindi around cotton.
  • The expression of one gene depends on the presence or absence of another gene in an individual is called epistasis or gene interaction.
  • An extension teacher helps farmers improve productivity and profitability.
  • The AICRP on dryland agriculture is located at Hyderabad.
  • An herbicide effective against grass weeds is Butachlor.
  • An intercropping practice that provides sustainable agriculture is mixed cropping.
  • An insecticide acting as a stomach poison is carbaryl.
  • An isomeric form of carbohydrate present in honey is fructose.
  • An insect pest attacking paddy is a stem borer.
  • An irrigation method that reduces water loss is drip irrigation.
  • An important protein source for poultry and livestock is soybean meal.
  • A working soil sample weighs 500 gm.
  • A x B = F1 represents a Single cross hybrid.
  • A young cucumber suitable for pickling is known as a Gherkin.
  • The Flowering Setting Hormone is NAA.
  • A+B+C horizons are collectively called Regolith.
  • A + B + Parent material is referred to as Regolith.
  • AAY stands for Antyodaya Anna Yojana.
  • The ability of a plant cell to grow into a complete plant is termed Totipotency.
  • The abiotic environment does not include Plants.
  • Abnormal leaf fall of Rubber occurs primarily in June-August.
  • The abnormal leaf fall caused by Phytophthora palmivora is a fungal disease of Rubber.
  • Saltation accounts for 50-75% of soil erosion by wind.
  • Abscisic acid is synthesized from actively growing points.
  • A transparent picture projected through a slide projector is called a Slide.
  • The distinguishing feature of Acuminata banana is its pseudostem color.
  • A typical hopper burn in rice is caused by the feeding of BPH.
  • The mango variety used for pulp extraction is Totapuri.
  • A variety produced by crossing various lines is known as a Synthetic variety.
  • A composite variety is created by mixing seeds of phenotypically outstanding lines.
  • A vertical section of soil through all its horizons is called a Soil Profile.
  • A weather abnormality is known as a Cyclone.
  • Climate refers to the weather condition over a region during a long period.
  • The weed that causes off-flavor in wheat flour is Wild rice.
  • The weed used for rope making is Thatch grass.
  • The science and study of grapes is called Viticulture.
  • The active ingredient present in Bael is Marmelosin.
  • The actual quantity of water held by air is termed Absolute Humidity.
  • Adams fig refers to the Banana.
  • Adiantum and Nephrolepis are types of ferns.
  • Adsali sugarcane is planted in July-August and has a growth duration of 16-18 months.
  • Adult Lepidopterans, like fruit moths, are pests of crops.
  • The Green Revolution began in the late 1960s.
  • Aerobic organisms require gaseous O2 for their activity.
  • Biological control of African payal (salvinia) is done using Cyrtobagous weevils.
  • The recommended herbicide for weed control in pea crops is Propanol.
  • AGMARK stands for Agriculture Produce (Grading & Marketing) Act.
  • Active absorption is the process of absorbing water against a concentration gradient.
  • Acalypha, Hibiscus, and Ixora are ornamental shrubs.
  • Acarapis mite infests adult bees.
  • Acaricides are pesticides that kill mites.
  • According to Beaufort’s scale, winds are classified into 12 classes.
  • The particle size of coarse sand is defined as 2 - 0.2 mm.
  • According to NBSSLUP, India has 21 Agro Ecological Regions.
  • The Planning Commission identifies 15 Agro Climatic Zones in India.
  • The acid present in ants is Formic acid.
  • Acidic soils have more H+ ions and fewer OH- ions.
  • Acidity in pineapple fruit increases due to shade.
  • Acid-saline soils have a pH range of 3 to 5.
  • "Agronomy" is derived from the Greek words agros + nomos.
  • Agrostology is the study of fodder grasses.