DLA & Seed Science Flashcards
Max area of India that can be irrigated
60%
Flowering portion of wheat is called?
Spike
Panicle for rice
Global terresterial area under DLA?
41.3% approx
Jackfruit, ber, pulses, millets are examples of crops in what kind of agriculture?
DLA
Cumbu can be grown in what kind of land agriculture?
DLA
Cumbu = Pearl Millet/Bajra
Annual rainfall in Dry Farming vs Dry Land Farming:
Dry <750mm
Dryland 750-1150 mm
Annual rainfall in Rainfed farming?
1150+ mm
Red Fed Farming refers to? It is practiced in?
Usage of red fescue grasses
To provide grazing for livestock.
In areas with little rainfall & poor soils
Areas with low soil moisture, high evapotranspiration that results in water deficits throughout the year
DLA
Primary goal of DLA?
Minimise water evaporation from soil
Problems of DLA
Low soil moisture retention capacity
Poor groundwater
Low yield
Inadequate available nutrients in soil
Advantage of aerobic rice cultivation
Saves irrigation water
Cost effective
Disadvantages of Aerobic Rice Cultivation?
Problem of weeds
Seed rate of aerobic rice
50 kg/ha
Harvest of aerobic rice is after how many days?
120-160 days
National Rainfed Area Authority (NRAA) is located in?
Delhi
ICAR-CRIDA Central Research Institute of DLA is located in?
Hyderabad
International Water Management Agency (IWMA) is located in?
Colombo, Sri Lanka
Centre of Excellence on DLA - CEDA, is located in?
China
Central Arid Zone Research Institute - ICAR-CAZRI is located in?
Jodhpur
Contribution of rainfed ariculture in India’s GDP?
60%
Farmers in irrigated areas earn ___% of their income from agriculture and those in rainfed areas earn only ____% from agriculture.
60%
20-30%
Share of farmers that rely on rainfed agriculture? Share of net sown area that is rainfed?
61%
54% net sown area
Share of millet production and rice production in India?
Millet 89%
Rice 40%
Share of production of pulses in India?
88%
Workshop on “Promotion of Climate Resilient Crops/Varieties/Seeds (Climate Resilient/Climate Agriculture)” was hosted by who and where?
by NABARD
at ICAR-CRIDA, Hyderabad
Direct seeding of rice under dry cultivation is called?
Aerobic Rice Cultivation
Why is it called “aerobic” rice cultivation?
Soil contains oxygen throughout
unlike in flooded conditions
Techniques to increase soil moisture in DLA?
Conservation tillage and
Moisture retaining mulching
A ripe, fertilised ovule containing plant embryo, enclosed in a seed coat
Seed
Basic input of agriculture?
Seed
Transfer of pollens from anther to stigma of a flower or different flowers
Pollination
Autogamy is? Examples are?
Self Pollination
Rice, Wheat, Oats, Barley, Pea, Lentils, Chillies
Types of Autogamy?
A->BCH
Bisexual - male and female in same flower
Cleistogamy - in unopened flower
Homogamy - Same time of maturation of anther & stigma
Allogamy is aka? examples are?
Cross Pollination
Corn, Rye, Sunflower, Safflower, watermelon, sugarcane, tea
Example of often cross pollinated plants
CS-PT
Cotton, Sorghum, Pigeon Pea, Tobacco
Separate male & female flowers in 1 plant
Monoecy
(ecy = home = 1 home)
Male & Female Flowers in different plants
Dioecy
Style and filaments are of different lengths
Heterostyly
Barrier between male & female organs
Herkogamy
Same flower transfers, even if it happens, won’t fertilise
Self-incompatibility
Flower opens early to permit transfer of pollen grains to other flowers
Chasmogamy
(oppositie of Cleistogamy)
Isolation distance in self-pollinated crops
Less than 3m
Isolation Distance is less than 3m for which crops?
Rice, wheat, oats, barley, peas
Self-Pollinated Crops
International Seed Testing Agency (ISTA) is in? and was launched in?
Norway
1924
National Seed Corporation of India, is located in and was launched in?
Delhi
1963
Seed Act of India was held in?
1966
Seed Rules by ISTA was made in?
1968
New Liberalised Seed Policy of India was made in?
1988
National Seed Policy was made in?
2002
International Crops Research Institute for Semi-Arid Tropics (ICRISAT) is located in?
Hyderabad
Focussed on chickpea, sorghum, groundnut, pearl millet, finger millet, pigeon pea
Classes of Seeds
NBFC-T
Nuclear
Breeder
Foundation
Certified
Truthfully Labelled
Who dominated the seed industry in the 1st 25 years till 1988, after independence?
the public sector
Initiative that led to the liberalisation of the seed sector in agriculture
Green Revolution 1965
National Seed Project 2002
New Policy on Seed Development
According to a research paper by ICAR (Manjunath et al) share of turnover by private sector in seed business is?
80%
According to a research paper by ICAR (Manjunath et al) seed production has ___ in a decade from 2001-11 with robust CAGR of ___
tripled
Compound Growth Rate - CAGR - of 15% pa
According to a research paper by ICAR (Manjunath et al) India’s share in Global Seed Export is ___
<2%
A legally sanctioned system for quality control of seed multiplication and production
Seed Certification
Purity of NBFC Seeds?
N - 100%
B - 100%
F - 99.5%
C - 99%
How many generation of seeds are produced in India?
3
Breeder, Foundation, Certified
Tag colour of each class of seed
N - No tag colour
B - Golden Yellow Tag
F - White Tag
C - Blue tag
T - Opal Green Tag
Registered Seed - Purple
Wrt to seed certification, validity period shall be ____ months from date of test at the time of initial certification, which could be extended for ____ months, provided on retesting seeds conform to prescribed standards
9 months
6 months
Crops more suiable for DLA?
Millets, Lentils, Sunflowers
Example of Recalcitrant Seeds
Mango, Coconut
Seeds that cannot be stored for long periods like orthodox seeds and lose their viability
Recalcitrant Seeds
Seeds capacble of being dried to internal seed moisture of less than 12% and stored at freezing temperature
Orthodox Seeds
Example of Orthodox Seeds
Cashew, Guava, Grains, Legumes, limes
Optimum moisture content of Oilseeds?
7-9%
Optimum moisture content of cereals?
10-12%
Number of seeds to be produced from a single seed, when it is sown and harvested
Seed Multiplication Ratio
Physiological dormancy is caused due to?
Arrest in metabolic activity of the seed
Which plant has 100% seed replacement ratio?
BT Cotton
Cabbage
Process of removing plant variety other than the one grown
Rouging
An imp technique followed from field to storage
Common cover crop in DLA to improve soil fertility, prevent weed growth, reduce soil moisture loss
Cowpea, Berseem, Mustard
Number of seeds planted/ha to ensure normal density of crops and maximum yield
Seed Rate
Important factors influencing lifespan of seed
Relative Humidity & Temperature
A characteristic moisture content developed in seeds when subjected to given level of atmospheric humidity
Equilibrium Moisture Content
A method that involves subjecting seeds to high temperature to break dormancy?
Heat Treatment
Method that involves exposing seeds to alternate periods of warm and cold temperature to break dormancy
Stratification
Method that involves weakening the seed coat by rubbing with sandpaper or using acid
Scarification
What is considered during seed quality testing
- Germination Rate
- Seed Moisture
- Seed Size
- physical purity of seeds
One of the essential & expensive req for hybrid seed production. ZnSO4, urea nd boric acid combination can be used as an economic option instead
GA3
Depth of ploughing related to?
Amount of rainfall
A deep tillage of _____ is necessary for deep rooted crops like pigeon pea and moderate tillage of _____ is necessary for maize
Deep tillage: 25-39 cm
Moderate tillage: 15-20 cm
Scientific name of Ragi or Finger Millet?
Eleusine corcana
Scientific Name of Bajra or Pearl Millet
Pennisetum typhoides
Or
Pennisetum glaucum
Scientific name of Foxtail or Navane
Setaria italica
Scientific name of Red Gram or Pigeon Pea?
Cajanus cajan
How many species of rice exist and how many are under cultivation?
24 species of Oryza
Only 2 are under cultivation
What are the 2 species of rice under cultivation? and where are they grown?
- O. sativa - Most rice growing places
- O. glaberrima - South Africa
Ragi, Groundnut, Sorghum are most suitable for cultivation in ____ Farming system
DLA
Drought resistant crops
In DSR field needs to be weed free for how many days after sowing?
15-45 days
Aerobic rice are sown ___ cm btw rows and ___ cm within rows with ___ cm depth
20 cm btw rows and 15 cm within rows (20x15)
3-5 cm depth
In aerobic rice cultivation, water needs to be maintained at _____ level
Soil saturation level
Equipment for line sowing of sprouted paddy seeds in puddled field in metered holes.
Drum seeder
Farm Advisory through Mobiles - Green SIM is implemented by?
IFFCO Kisan Sanchar Ltd. (IKSL)
Indian Govt is planning to allocate Rs. 6k crore to promote precision farming in ___ acre land for 5 years from ____ - ____
15,000 acres of land
From 2024-25 to 2028-29
Expected to benefit 60,000 farmers
GoI is collaborating with ____ & ____ to create 100 CoE for adv farming solutions in 5 yrs
Netherlands and Israel
____ is a mat nursery method that uses sheets or banana leaves that prevent the seedlings root from growing too deep, while ___ produces healthy seedlings that can be transplanted quickly and efficiently
Dapog
SRI
Dapog can be transplanted within? SRI can be transplanted within?
Dapog: 14-17 days
SRI: 10-15 days