1.What term describes the ratio of the area actually cultivated to the total farm area within a year?
2.What is the term for removing off-type plants from a cultivated field?
3.What term describes the long-term and close ecological association between two or more different species?
4.Which type of herbicide eliminates weed leaves through direct contact action?
5.What term describes the soil water that exceeds hygroscopic and capillary water and moves downward through the soil due to gravity?
6.What term describes the practice of applying fertilizer nutrients in ratios that precisely meet the crop's requirements?
7.What term describes the total amount of dry material generated by a plant through photosynthesis?
8.What is the term for the warming of the Earth's atmosphere caused by gases that allow sunlight to pass through but trap the heat radiated from the surface?
9.What term describes the amount of water needed by crops throughout the base period?
10.Which of the following is the primary global source of sugar?
11.Which of the following plants is a monocot known for producing fibers?
12.How many times should cotton crops be irrigated during their growth cycle?
13.What is the optimal period for planting cotton?
14.Which sowing technique is preferred for planting cotton?
15.What is the typical seed rate per acre for American cotton?
16.Which type of cotton branches are considered non-productive?
17.What is the ideal pH range for cultivating cotton plants?
18.Bacillus thuringiensis used in cotton cultivation belongs to which category?
19.Cotton is primarily cultivated in which type of climate zones?
20.What type of germination does the cotton plant exhibit?