Refer to the given Venn diagram and identify and .
Important Questions on Crop Production and Management
(i) Manure enhances the water holding capacity of the soil.
(ii) Manure is nutrient specific i.e., supply a particular desired nutrient.
(iii) Manure decreases the number of friendly microbes.
(iv) Manure improves the texture of the soil.
(v) Manure is prepared by the decomposition of dead plant and animal matter.
Statement 1: Pheromones are used as biological method to control pest.
Statement 2: Statement 2: Pheromones lure adult male insects into special traps and prevent them from breeding.
Following are given the differences between manures and fertilizers.
Which of the given differences are incorrect?
| Manures | Fertilizers | |
| (i) | They are not soluble in water. So they are not easily absorbed by the roots of the plants. | They are soluble in water and are absorbed by the plants easily. |
| (ii) | These are inorganic substances. | These are organic substances. |
| (iii) | Excessive use does not harm the soil texture, they provide humus to the soil. | Excessive use can change the chemical composition of the soil and also pollutes water. |
| (iv) | They restore the soil texture and help in water retention. | They may damage the soil texture. |
| (v) | These are nutrient specific. | These are not nutrient specific. |
Pick the odd one out from each series given below and select the correct option.
(i) Chain pump, Dhekli, Drip system, Pulley system
(ii) Urea, Oxychloride, Potash, Ammonium sulfate
(iii) Khurpi, Weedicides, Seed drill, Silos
(iv) Sowing, Irrigation, Hybridisation, Harvesting
(v) , MCPA, Butachlor, BHC
Which among the following are pesticides?
(i) Malathion
(ii) Metolachlor
(iii) Simazine
(iv) MCPA
(v) Disulfoton
(vi) Gammexane
(vii) Butachlor
(viii)
(ix) Dalapon
(x) Endrin
In which of the following agricultural practices, the nutrient requirements of one crop are fulfilled by the other crop?
