Field Crop Production: Cotton, Sugarcane and Oilseeds MCQs 2026

Cotton leaf curl virus is mainly transmitted by

1. A Honeybee ✓
2. B Earthworm ✓
3. C Fruit fly ✓
4. D Whitefly ✓

The ripening phase of sugarcane is marked by

1. A Only vegetative sprouting ✓
2. B Lint elongation ✓
3. C Sucrose accumulation in the stalk ✓
4. D Pod formation underground ✓

Brix in sugarcane juice is a measure of

1. A Seed germination only ✓
2. B Total soluble solids ✓
3. C Soil pH only ✓
4. D Leaf area index only ✓

The major recoverable sugar in sugarcane is stored mainly in the

1. A Leaf hairs ✓
2. B Flower petals ✓
3. C Root nodules ✓
4. D Stalk internodes ✓

Sugarcane is generally considered a

1. A Long-duration crop ✓
2. B One-week vegetable crop ✓
3. C Short nursery herb only ✓
4. D Dry storage grain only ✓

Ratooning in sugarcane means

1. A Raising seedlings in a rice nursery ✓
2. B Removal of lint from seed ✓
3. C Regrowth from stubble after harvest ✓
4. D Extraction of oil from seed ✓

A good sugarcane sett usually contains

1. A No buds at all ✓
2. B Two to three healthy buds ✓
3. C Only leaves and trash ✓
4. D Only roots without stem ✓

Commercial sugarcane is propagated mainly by

1. A Stem cuttings called setts ✓
2. B True botanical seed only ✓
3. C Leaf cuttings only ✓
4. D Root nodules ✓

Sugarcane belongs to the family

1. A Malvaceae ✓
2. B Brassicaceae ✓
3. C Asteraceae ✓
4. D Poaceae ✓

Staple length in cotton refers to

1. A Diameter of cane stalk ✓
2. B Oil percentage in seed ✓
3. C Average length of lint fibre ✓
4. D Number of sugarcane buds ✓

An important basis of cotton integrated pest management is

1. A Spraying by calendar only without observation ✓
2. B Regular scouting and economic threshold levels ✓
3. C Using only one insecticide for the season ✓
4. D Ignoring beneficial insects ✓

Defoliation before mechanical cotton picking is done to

1. A Remove leaves and reduce trash in seed cotton ✓
2. B Increase seed dormancy ✓
3. C Convert cotton into sugarcane ✓
4. D Stop boll opening permanently ✓

Square and boll shedding in cotton is commonly increased by

1. A Balanced irrigation only ✓
2. B Timely picking only ✓
3. C Water stress and insect attack ✓
4. D Proper seed delinting only ✓

The fruiting form that appears before flower and boll in cotton is the

1. A Tiller ✓
2. B Panicle ✓
3. C Sett ✓
4. D Square ✓

Excess nitrogen in cotton often causes

1. A Immediate lint drying in field ✓
2. B Rank vegetative growth and delayed maturity ✓
3. C Complete immunity to insects ✓
4. D No leaf growth ✓

Cotton generally performs best on

1. A Well-drained loam to silt loam soils ✓
2. B Waterlogged saline ponds ✓
3. C Pure gravel without nutrients ✓
4. D Permanent marsh only ✓

Seed cotton before ginning is commonly called

1. A Gur ✓
2. B Bagasse ✓
3. C Kapas ✓
4. D Press mud ✓

Ginning is the process of separating

1. A Juice from cane ✓
2. B Lint from seed ✓
3. C Oil from mustard cake ✓
4. D Pollen from tassels ✓

Cotton picking should preferably be done when bolls are

1. A Green and unopened ✓
2. B Submerged in irrigation water ✓
3. C Still at seedling stage ✓
4. D Fully open and dry ✓

Mealybug in cotton damages plants mainly by

1. A Sucking sap and producing honeydew ✓
2. B Cutting stems at soil level ✓
3. C Chewing stored lint only ✓
4. D Causing bacterial blight directly ✓

Pink bollworm in cotton chiefly damages

1. A Only roots of seedlings ✓
2. B Bolls and developing seeds ✓
3. C Rice panicles ✓
4. D Sugarcane leaves only ✓

Jassid injury in cotton commonly causes

1. A Underground pod formation ✓
2. B Red rot in stalks ✓
3. C Leaf yellowing, curling and hopper burn symptoms ✓
4. D Sterile tassels ✓

In Pakistan, cotton is grown mainly as a

1. A Rabi crop ✓
2. B Winter fodder only ✓
3. C Perennial orchard crop ✓
4. D Kharif crop ✓

The economic fibre of cotton develops from

1. A Root hairs of the taproot ✓
2. B Epidermal hairs of the seed coat ✓
3. C Stem pith cells ✓
4. D Leaf mesophyll cells ✓

The most widely cultivated upland cotton species is

1. A Gossypium barbadense ✓
2. B Gossypium arboreum ✓
3. C Gossypium hirsutum ✓
4. D Hibiscus esculentus ✓

Cotton belongs to the botanical family

1. A Malvaceae ✓
2. B Poaceae ✓
3. C Fabaceae ✓
4. D Solanaceae ✓

Timely sowing of oilseed crops mainly helps by

1. A Eliminating the need for seed ✓
2. B Turning oilseed crops into cereals ✓
3. C Improving establishment and escaping terminal heat stress ✓
4. D Preventing flowering permanently ✓

Aphid is a common sucking pest of mustard that damages by

1. A Separating lint from seed ✓
2. B Cutting cane at harvest only ✓
3. C Producing sucrose in stalks ✓
4. D Sucking plant sap and excreting honeydew ✓

Alternaria blight is an important disease of

1. A Rapeseed and mustard ✓
2. B Sugarcane setts only ✓
3. C Cotton lint in storage only ✓
4. D Maize silks only ✓

Oilseed cake left after oil extraction is commonly used as

1. A Seed cotton for ginning ✓
2. B Cane planting sett ✓
3. C Rice nursery soil only ✓
4. D Animal feed ✓

Sunflower oil is generally rich in

1. A Cane sucrose only ✓
2. B Cotton lint fibre ✓
3. C Unsaturated fatty acids ✓
4. D Starch granules only ✓

Rapeseed-mustard is mainly grown in Pakistan as a

1. A Kharif paddy crop ✓
2. B Rabi oilseed crop ✓
3. C Perennial fibre crop ✓
4. D Summer sugar crop only ✓

Safflower is relatively tolerant to

1. A Drought and salinity ✓
2. B Permanent flooding only ✓
3. C Heavy shade only ✓
4. D Severe frost at flowering ✓

The botanical name of linseed is

1. A Helianthus annuus ✓
2. B Sesamum indicum ✓
3. C Arachis hypogaea ✓
4. D Linum usitatissimum ✓

Sesame is comparatively valued in dry areas because it is

1. A A permanent aquatic crop ✓
2. B Unable to grow in warm weather ✓
3. C Drought tolerant ✓
4. D A fibre crop only ✓

Groundnut is distinctive among oilseeds because its pods develop

1. A On the tassel ✓
2. B Underground after pegging ✓
3. C Inside cane internodes ✓
4. D On rice panicles ✓

The inflorescence of sunflower is a

1. A Capitulum or head ✓
2. B Spike ✓
3. C Cob ✓
4. D Umbel ✓

The sun-following movement of young sunflower heads is called

1. A Geotropism ✓
2. B Hydrotropism ✓
3. C Thigmotropism ✓
4. D Heliotropism ✓

Rapeseed and mustard belong to the family

1. A Poaceae ✓
2. B Brassicaceae ✓
3. C Malvaceae ✓
4. D Cucurbitaceae ✓

Canola differs from traditional rapeseed mainly because it has

1. A No oil in the seed ✓
2. B Only blue flowers ✓
3. C Low erucic acid and low glucosinolates ✓
4. D Underground bolls ✓

Waterlogging in sugarcane mainly reduces yield by

1. A Restricting aeration and root activity ✓
2. B Increasing oxygen in roots excessively ✓
3. C Improving all soil microbes equally ✓
4. D Stopping all weed growth permanently ✓

Sugarcane is a heavy feeder especially of

1. A Only chlorine gas ✓
2. B No nutrients at all ✓
3. C Only sodium chloride ✓
4. D Nitrogen and potassium ✓

Sugar recovery is improved when cane is harvested at

1. A Very early sprouting stage ✓
2. B Proper maturity with high sucrose content ✓
3. C Complete drying after burning for months ✓
4. D The nursery seedling stage ✓

Top borer in sugarcane can produce the symptom known as

1. A Dead heart ✓
2. B Hopper burn in rice only ✓
3. C Bunchy top in banana only ✓
4. D Green ear in bajra only ✓

Pyrilla is an important sugarcane pest that mainly

1. A Bores into cotton bolls only ✓
2. B Eats stored wheat grain ✓
3. C Sucks sap from leaves ✓
4. D Damages mustard flowers only ✓

Red rot of sugarcane is caused by

1. A Puccinia triticina ✓
2. B Xanthomonas citri ✓
3. C Alternaria solani ✓
4. D Colletotrichum falcatum ✓

Trash mulching in sugarcane helps mainly to

1. A Increase soil erosion ✓
2. B Conserve soil moisture and suppress weeds ✓
3. C Destroy all buds on setts ✓
4. D Lower organic matter permanently ✓

Earthing up in sugarcane is practiced to

1. A Support canes and cover the root zone ✓
2. B Separate lint from seed ✓
3. C Induce rice tillering ✓
4. D Remove sugar from juice ✓

Bt cotton primarily provides protection against

1. A Termites only ✓
2. B Bollworms ✓
3. C Leaf rust ✓
4. D Red rot ✓

In cotton terminology, a square refers to a

1. A Flower bud ✓
2. B Mature open boll ✓
3. C Ginned seed ✓
4. D Root nodule ✓