agriculture

Question 1

1. what is heaving
2. what are auxins, cytokins
3. heliophytes
4. sciophytes
5. heliotrophism
6. geotrophism

Answer 1

1. injury because of lift cause by snow
2. growth regulators
3. sun loving species-rice wheat, sugarcane, cotton
4. shade loving
5. movement of plant towards sun
6. movement of plant towards earth

Question 2

1. what is allelopathy
2. solonization/alkalization
3. solodization/dealkanization
4. podozolisation
5. laterization
6. gleization

Answer 2

1. direct/ indirect harmful effect by one plant bcz of release of toxins
2. accumualation of Na
3. removal of NA ions by use of Ca, Mg
4. leaches sodium of calcium carbonate, negative of calcification
5. removes silica from surface
6. devp of gley above parent material bcz of lack of o2- hydro orphic soils

Question 3

1. calcium is req is plant for?
2. use of sulphur
3. nitrogen
4. phosphorous
5. potassium
6. magnesium

Answer 3

1. plant growth, cell division
2. for ammino acids
3. integral part of chlorophyll, vegetative growth
4. to fix light energy
5. plant growth, storage of sugar and proteins, protect from frost drought
6. in chlorophyll, activator of enzyme