soil
irrigation
harvesting
nutrification
biology
100
clay,sandy,silt,humus
which are the 4 main types of soil
100
2 types
how many types of machines we use for iriigation?
100
hard to be divided,low procent in water
how we know the right harvest time for grain?
100
more then 4 degrees
What are the special demands for temperature?
100
tufted root,ussualy tap root
what are to main types of root?
200
for plants,because it lets the water go off
for what is good sandy soil?
200
fixed machine(just spray) mobile machine
which are the 2 types of irrigation machines?
200
dry pod,seed have a dark colour
how we know the right harvest timpe for rape?
200
no
can the plants use all potasium from the soil?
200
By gravity,wind and water
How can seeds be spread?
300
one of the most fertile
how its considered to be the silty soil?
300
4 hectars
how many hectars can cover a irrigation machine?
300
uniforme yellowish,and we can not mark the seed with the nail
What is the right time for harvesting peas?
300
2000 kg
What quantity of P(fosfor) we can find in the soil pr hectar?
300
plants use their glucose they unde go another process called respiartion
how the plants breath?
400
prevents the flow of water it absorbs water slowly and then stores it for a long time
what propertyes have clay soil regarding the water
400
empty the pipes
what we have to do with the irrigation machine before winter?
400
low procent of water
What is the good quality in crops?
400
20-40kg
how many kg of P the plants use pr hectar?
400
its a structure surrounding the plasma membrane of plants cells and bacteria
what is cell wall?
500
in sandy soil particles smaller than 2 mm
in which kind of soil we can find colloids
500
straight and about 1 km long ore more
how the surface should be when we use fixed machine
500
10 tons
how many tons of grain we have after harvesting 1 hectar
500
SO4 - -
in witch chemistry formula can the plant abosrb S?
500
a organic more speciffically plants cells,altrought present in some animal cells
What is cellular vacuole?
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