Which of the following is not an organic method used to control weeds?
cover crops
herbicides
pre- irrigation
flame weeding
The crop commonly used for crop rotation is
legume
cereal
vegetables
all of these
When blood levels of thyroid hormone is low the condition is called
hypothyroidism
hyperthyroidism
mongolism
hypoglycemia
A measure of the acidity or alkalinity of the soil is called ?
Leaching
Soil test
Soil pH
None of these
What are the physical aspects of the environment like temperature and wind called?
Biotic factors
Abiotic factors
A community
Niches
More frequent irrigation is needed by
clayey soil
alluvial soil
black soil
sandy soil
Preventive and control measures adopted for the storage of grains include
Strict cleaning
Proper disjoining
Fumigation
All of the above
Growing fodder grass with fruit trees is
mixed cropping
crop rotation
inter cropping
mixed farming
Undesirable effect of green revolution is
development of HYV of crops
introduction of agricultural implements
disturbance of food chains
effective control of plant diseases
An animal husbandry is the scientific management of
( i ) Animal breeding ( ii ) Culture of animals ( iii) Animal livestock ( iv) Rearing of animals
( i ), ( ii ) and ( iii)
( ii ), ( iii) and ( iv )
( i ), ( ii ) and ( iv )
