Citrus Crop

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Citrus Crops Question & Answer

Citrus Crops

	Mandarin/orange
	Question	Answer
1	Botanical Name?	*Citrus reticulata*
2	Family?	Rutaceae
3	Origin?	China
4	Mandarin is a?	Fancy fruit
5	C.itrus fruits have a special kind of fruit skin referred as?	Leathery rind
6	C.itrus is ——-loving plant?	Micro-nutrient
7	Mandarin occupies ——area under citrus spp.?	50%
8	Mandarins are highly susceptible to?	Water logging
9	Best time for Pruning?	Late winter or early spring
10	Seeds of citrus don’t have ——so they should be sown immediately after extraction?	Dormancy
11	Mandarin, sweet orange, Acid lime, grape fruit have highly?	Poly embryonic
12	Pummelo, Tahiti lime, Citron is?	Mono embryonic
13	Which is most promising root-stock for mandarin and sweet orange?	Rangpur lime
14	Trifoliate orange is resistant to?	Phytophthora & Nematodes
15	Which glycoside is responsible for bitter taste of citrus fruit Juice?	Limolin
16	How many time blooming come in a year?	Three time
17	February flowering is known as?	Ambe bahar
18	June flowering is known as?	Mrig bahar
19	October flowering is known as?	Haste bahar
20	Irrigation requirement of mandarin is ——than other citrus species?	Higher
21	Which variety of citrus was developed by H.B. Frost in USA in 1935?	Kinnow
22	Kinnow variety was introduced in India in which year?	1959
23	Kinnow can be grown in high density planting by using —— as a root-stock?	Troyer citrange
24	Spacing of the Kinnow variety plants at?	1.8x 1.8m(3000 plants/ha)
25	Which are serious problem in C.itrus nursery?	Weeds
26	Which weedicide is most effective in controlling monocot and dicot weed?	Bromocial
27	State with highest production of C.itrus in India is?	Andhra Pradesh
28	Varieties Coorg Khasi Nagpur (Ponkan) Satsuma (seedless) Emperor and Fuetrelles (Introduction from Australia)
29	Hybrid Kinnow is Cross between?	King Sweet x Willow Leaf
30	Which city of India is the only place where mandarin are packed in wooden boxes?	Sikkim
31	Root-stock- Adajamir [C. assamensis] are resistant to?	Greening

	Sweet orange
	Question	Answer
1	Botanical Name?	*Citrus sinensis*
2	Family?	Rutaceae
3	Origin?	China
4	Best time for pruning?	Late winter or early spring
5	Sweet orange is susceptible to?	Water logging & Phytophthora rot
6	Which method best for irrigation?	Double ring
7	Pre-harvest fruit drop is common in?	C.itrus
8	Pre-harvest fruit drop is due to?	Physiological factors Pathological factors
9	Most prone variety for Pre-harvest fruit drop?	Mosambi & Blood Red
10	Control measure for Pre-harvest fruit drop spray of?	2, 4-D (20PPM)
11	Degreening of C.itrus fruits is done by?	CaC2, (calcium carbide)
12	Which are most common method for sweet orange propagation?	T-budding or Patch budding
13	Deficiency of zinc along with——-, is major nutritional problem of sweet orange?	N2 (Nitrogen)
14	Pineapple and Valencia is indicator for which disease?	Greening
15	Best rootstock for mosambi?	Rangpur lime
	Varieties Hamlin Pineapple Mosambi :Most popular in Maharashtra Satgudi: Best root-stock for Rough lemon. Blood red Shamouti: Seedless variety Mudkhed-Bud mutant of Nagpur mandarin. Jaffa

Citrus Question & Answer

	Lime & Lemon
	Question	Answer
1	Sweet lime?	*Citrus limetoides*
2	Native?	India
3	Self incompatible is found in?	Sweet lime
4	Tohiti lime?	*Citrus latifolia*
5	Tohiti lime is a?	Seedless
6	Tohiti lime is a?	Triploid
7	Rangpur lime?	*Citrus limonica*
8	Native?	India
9	Pummelo?	*Citrus grandis*
10	Pummelo is a —— fruit among C.itrus spp.?	Largest fruit
11	Self incompatible is found in?	Pummelo
12	Acid-lime is?	Tropical plant
13	Which rank of India among major lime and lemon producing country in the world?	5th rank
14	Kagzi lime is highly susceptible to which disease?	Tristeza
15	Kagzi lime is the indicator plant for?	Tristeza
16	C.itrus canker is most serious disease of?	Acid lime
17	Sweet lime is resistant to?	Greening
18	Sweet lime contain?	Non acid Juice
19	Gajanimma (Citrus Pennivesiculata) is most promising root stock followed by rough lemon for?	Acid lime
20	Acid lime/kagzi lime varieties Pramalini: Canker tolerant Chakradhar: Seedless variety of Acid lime PKM-1 Sai sarbati: Tolerant to tristeza and canker Jai devi : Pleasant Aroma. Vikram
21	Sweet lime Varieties Mithotra Mitha chikna
22	Lemon Varieties Lisbon Eureka Lucknow seedless Kagzikalan & Pant lemon-self incompatible.

	Grape Fruit
	Question	Answer
1	Botanical Name?	*Citrus paradisi*
2	Family?	Rutaceae
3	Grape fruit is also known as?	forbiddin fruit, break fast fruit
4	Varieties Foster Marsh seedless 1 Red Blush Thompson
5	Star ruby is developed from Hudson grape fruit through?	Mutation breeding

Common Point All Citrus Crops

	Common important point about citrus spp.
	Question	Answer
1	Botanical Name?	Citrus spp.
2	Chromosome number?	2n-18
3	Organic acid?	Citric acid
4	Sugars?	Glucose & fructose
5	Pigments?	Xanthophylls & Carotene
6	Flavouring compounds?	Citral (Lemon) &Valencene (orange)
7	Vitamin?	Vitamin-C
8	Planting Time for Acid lime?	Dec to Feb and June to sept.
9	Planting Time for Sweet orange?	July to Sept
10	Planting Time for Mandarin?	Nov to Dec
11	Classification of C.itrus was given by?	Tanka & Swingle (1945)
12	Which country is largest exporter of citrus?	Spain
13	Ultra dwarf root stock of C.itrus?	Flying drago
14	Fruit ripening come —– month after planting?	9 month
15	Planting the seedlings in pits of size?	75cm x 75cm
16	Advanced technology?	Tissue culture and micro-propagation

	Question	Answer
	Insect-pest of citrus
17	Citrus Psylla	*Diaphorina citri*
18	C.itrus Psylla is a vector of?	Greening disease
19	Leaf minor	*Phyllocnistis citrella*
20	Leaf minor is vector of?	citrus canker
21	Aphids	*Toxoptera auranti*
22	Aphids is vector of?	Tristeza disease
23	Lemon butterfly	*Papilo demoleus*
24	Lemon butterfly is Controlled by?	bagging of fruits
25	Fruit sucking moth	*Othreis fullonica*
26	Diseases of C.itrus
27	Gummosis?	*Phytophthora Spp.*
28	Bacterial canker?	*Xanthomonas compestris p.v citri.*
29	Tristeza?	Virus
30	Exocortis?	Viroids
31	Ctrus greening	*Calibero bacter*
32	Calibero bacter is a?	Gram negative, walled bacteria

C.itrus spp.	Propagate by
C.itrus aurantifoliumn	Seed
Citrus deliciosa	T Budding/Shield Budding
C.itrus reticulata	T Budding/Shield Budding
C.itrus sinensis	Budding /Shield Budding

	Question	Answer
33	Physiological disorder
34	Due to high temperature & R.H. during ripening?	Granulation
35	Granulation managed by spray lime & application of?	2,4-D (12 ppm)
36	Exanthema?	Copper deficiency.
37	Yellow leaf of C.itrus?	Mo deficiency
38	Die back due to?	Cu deficiency
39	Little leaf?	Cu deficiency
40	Yield (average) of Lime?	1500 to 1000 fruit/tree
41	Yield (average) of Lemon?	3000 to 5000 fruits/tree
42	Yield (average) of Orange and Malta?	500 fruits/tree
43	Yield (average) of Grape fruit and Pummelo?	3000 fruits/tree

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