Description : The sigmoidal relationship between weed density and crop yield was proposed by a).Zimdahl 1980 b). Roberts and Bonds (1975) c). Cousens et al (1985) d). None of these
Last Answer : a).Zimdahl 1980
Description : The international Weed Science Soci ety (IWSS) was formed in a). 1955 b). 1968 c). 1975 d). 1985
Last Answer : c). 1975
Description : Integrated weed management practices that a). Enhance crop competitive ability b). Decrease weeds ability to reduce yield c). Practices that eliminate weeds from an area d). Both a and b e). Both a and c
Last Answer : d). Both a and b
Description : Hybrid cotton in India was evolved for the first time in (A) 1975 (B) 1980 (C) 1970 (D) 1985
Last Answer : (C) 1970
Description : What was the time period of the 6 th plan? a. 1978-1980 b. 1980-1985 c. 1975-1980 d. 1951-1956
Last Answer : b. 1980-1985
Description : National Research Centre for Weed Science (NRCWS), now Directorate of Weed Research (DWR) Jabalpur came into existence on a). 22 April, 1982 b). 22 April, 1985 c). 22 April, 1989 d). 22 April, 1997
Last Answer : c). 22 April, 1989
Description : The Asian Pacific Weed Science Soci ety (APWSS) was founded in a). 1667 b). 1985 c). 1951 d). 1992
Last Answer : a). 1667
Description : If the yield from weed free is 3500 kg and that from weedy 1500 kg/ha, weed index would be a). 57.1% b). 133.3% c). 45.0% d). 25.6%
Last Answer : a). 57.1%
Description : If weed population is 70/m2 and the crop 140/ m2, weed intensity would be a). 33.3% b). 66.6% c). 50% d). 73.4%
Last Answer : a). 33.3%
Description : . A non-competitive crop requiring weed free period of three or more months a). Maize b). Rice c). Soybean d). Onion
Last Answer : d). Onion
Description : A period in the ontogeny of crop at which maximum crop weed competition occurs is called a). Economic threshold b). Gain threshold c). Competitive threshold d). None
Last Answer : d). None
Description : The effective solution to manage weed shifts a). Herbicide combinations b). Herbicide rotations c). Crop rotations d). All
Last Answer : d). All
Description : The competitive crop requiring weed free period of about 3-4 weeks a). Soybean b). Carrot c). Garlic d). Onion
Last Answer : a). Soybean
Description : November sown berseem crop induces the weed a). Chenopodium sp b). Anagallis sp c). Vicia sp d). All of these
Last Answer : d). All of these
Description : The official peer-reviewed Journal of the EWRS (European Weed Research Society) is a). Journal of Crop and Weed b). Weed Research c). Weed Science
Last Answer : b). Weed Research
Description : Critical period of crop weed competition in sugarcane is a). 30-40 days b). 30-120 days c). 10-40 days d). 15-30 days
Last Answer : b). 30-120 days
Description : The period at which maximum crop weed competition occurs is a). Critical period b). Dormancy c). Flaming d).Threshold
Last Answer : a). Critical period
Description : Factors affecting weed-crop interference are a). Period of weed growth b). Soil and climate influence c). Plant species effects d). All
Description : Wheat and bajra have critical period of crop-weed competition a).10-20 days b).15-30 days c). 30-45 days d). 20-40 days
Last Answer : c). 30-45 days
Description : How many modes of action commer cialized between 1970 and 1985 a).6 b).9 c).10 d).12
Last Answer : d).12
Description : . Transgenic crops were first introduced in a).1985 b).1983 c).1993 d).1990
Last Answer : d).1990
Description : Glufosinate resistant cotton was com mercially made available in a).1993 b).1985 c).2004 d).1990
Last Answer : c).2004
Description : Release of Bromoxynil resistant cotton a).1980 b).1999 c).1995 d).1987
Last Answer : c).1995
Description : Besides isoproturon resistance in P. minor, other cases of herbicide resis tance reported in India are a). Poa annua b). Brachiaria ramosa c). Commelina sp d). None of the above
Last Answer : d). None of the above
Description : The political parties got the Constitution recognition for the first time in the year - (1) 1975 (2) 1977 (3) 1985 (4) 1995
Last Answer : (3) 1985 Explanation: Political parties got the constitutional recognition for the first time in 1985,
Description : The Air Prevention and Control of Pollution Act came into force in (a) 1985 (b) 1990 (c) 1975 (d) 1981
Last Answer : (d) 1981
Description : The word ‘socialist’ was enacted in the Constitution of India- (i) 1975 (ii) 1976 (iii) 1985 (iv) 1986
Last Answer : (ii) 1976
Description : in which year was UK’s premier computing event started? A) 1980 B) 1985 C) 1986 D) 1987
Last Answer : Answer : A
Description : When was the world’s first laptop computer introduced in the market and by whom? A) Hewlett-Packard, 1980 B) Epson, 1981 C) Laplink Traveling Software Inc, 1982 D) Tandy Model-200, 1985
Last Answer : Answer : B
Description : Palace On Wheels Train was inaugurated in which year? A. 1980 B. 1982 C. 1985 D. 1990
Last Answer : B [1982] Explanation: The Palace on Wheels is a luxury tourist train. It was launched by the Indian Railways in association with Rajasthan Tourism Development Corporation to promote tourism in Rajasthan.
Description : in which year was UK’s premier computing event called ‚The which computer‛ started? a. 1980 b. 1985 c. 1986 d. 1987
Last Answer : 1980
Description : The National flood Commission in India was set up in (a) 1980 (b) 1985 (c) 1995 (d) 1980
Last Answer : (a) 1980
Description : SAARC was founded in: (a) 1980 (b) 1983 (c) 1985 (d) None of these
Last Answer : (c) 1985
Description : Period of fifth generation? a. 1974-1978 b. 1979-1980 c. 1981-1985 d. 1995-till date
Last Answer : d. 1995-till date
Description : in which year was UK’s premier computing event called “The which computer” started? a. 1980 b. 1985 c. 1986 d. 1987
Last Answer : a. 1980
Description : Percent reduction in yield in case of onion due to weeds is a). 20-30 b). 30-35 c). 60-70 d).15-20
Last Answer : c). 60-70
Description : Percent reduction in grain yield of transplanted rice due to weeds is a). 20-40 b).10-30 c).15-20 d).15-45
Last Answer : d).15-45
Description : Computerized Passenger Reservation System was introduced in Indian Railways in which year? A. 1975 B. 1980 C. 1986 D. 1992
Last Answer : C [1986] Explanation: The computerized passenger reservation system (PRS) of Indian Railways is the largest passenger reservation network in the world, available at 2,222 locations with more than 8074 terminals.
Description : The first Kshetriya Gramin Bank (KGB) was opened in India is— (A) 1972 (B) 1980 (C) 1975 (D) 1969
Last Answer : (C) 1975
Description : Hybrid cotton came into existence in India in the year? a 1975 b 1965 c 1980 d 1970
Last Answer : d 1970
Description : 'Twenty Point Programme" was launched in the year?\ (A) 1969 (B) 1975 (C) 1977 (D) 1980
Last Answer : (D) 1980
Description : Production of power tiller rapidly increased during the year . A. 1950-1970 C. 1970-1980 B. 1960-1975 D. 1950-1965
Last Answer : 1950-1965
Description : Zimbabwe attained independence in a. 1975 b. 1979 c. 1980 d. 1981
Last Answer : c. 1980
Description : 'Twenty Point Programme" was launched in the year? A. 1969 B. 1975 C. 1977 D. 1980 E. None of these
Last Answer : D. 1980
Description : Field of PC forensics began in which year ? a. 1975 b. 1944 c. 1971 d. 1980
Last Answer : d. 1980
Description : If Echinochloa falls in frequency class ‘E’, the weed community is said to be a). Contiguous b). Heterogenous c). Homogenous d). Random
Last Answer : c). Homogenous
Description : If the count of Echinochloa in weedy check is 70 and that in a treatment 25/m2, weed control efficiency will be a). 54.3% b). 64.3% c). 73.4% d). 79.6%
Last Answer : b). 64.3%
Description : . A ceremonial weed a). Cynodon dactylon b). Datura stramonium c). Tagetus sp d). All of these
Description : A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Nelumbo nucifera (Lotus flower) d). All of these