name any two weeds each of kharif and Rabi season suggest any one weedicide to control these weeds
Answers
Answer:
Explanation:
3. In our country three categories of crops are grown:
Kharif Crops:The crops which are sown in the rainy season (i.e., from June to September) are called kharif crops. Paddy, maize, soyabean, groundnut, cotton etc., are kharif crops.
Rabi Crops:The crops grown in winter season (i.e., from October to March) are called rabi crops. Examples of rabi crops are wheat, gram, pea, mustard, linseed.
Zayed Crops (or Summer Crops):The crops grown in summer season are called zayed crops. Moong, muskmelon, watermelon, cucumber, gourd and bitter gourd are examples of zayed crops.
4. Cultivation of crops involved following activities:
Soil Preparation:It involves loosening and tilling of the soil (i.e., ploughing and watering).
Sowing:Sowing is the process of putting seeds in the soil
Adding Manure and Fertilisers:The substances, which are added to the soil in the form of nutrients to improve the production of the crops and the fertility of the soil are called manure and fertilisers.
Irrigation:Supply of water to crops at appropriate intervals is called irrigation.
Protection from Weeds:Needs are the unwanted plants that grows along with the crops. Its removals is must for the better growth of the crops.
Harvesting:The cutting of crop after it is mature is called harvesting.
Storage:If the crop grains are to be kept for longer time, they should be safe from moisture, insects and rats
5. Agricultural Practices:There are various activities that have to be performed, before sowing the seed and upto harvesting. These are called agricultural practice.
6. Fertilisers and Manure:The substance which are added to the soil in the form of nutrients for the improvement of crop production and the fertility of the soil are called fertilisers and manure.
7. Thrashing:The process of separation of grain from the chaff in the harvested plant is called thrashing.
8. Weeds:There are other undesirable or unwanted plants may grow naturally along with the crop, such plants are called weeds.
9. Weedicides:Those certain chemicals which are used to control weeds are called weedicide. For example: 2-4D (2-4-dichlorophenoxyacetic acid), metachlor.
10. Winnowing:A process, which do the separation of grain and chaff is called winnowing.
11. Humus:Humus is the top layer of the soil, i.e., formed by decaying or decomposition of organic matter like leaves or animal remains, dead organism, shed leaves or organism by the microorganism.
12. Pests:Pests are the insects or rodents that destroy much of our crop yield. Thus, it is necessary to save crops from pests.
13. Important agricultural tools:
Plough:This is used for tilling the soil, adding fertilisers to the crop, removing the weeds, scraping of soil, etc. This implement is made of wood and drawn by a pair of bulls. (fig. 1.1)
Hoe:It is used for removing weeds and for loosening the soil. (Fig. 1.2.)
Cultivator:Used for ploughing. It is driven by tractor use of cultivator saves labour and time. (Fig. 1.3.)
Traditional Tool:The tool used traditionally for sowing seeds is shaped like a funnel. (Fig. 1.4)
Seed Drill: Used for sowing with the help of tractors. This tool sows the seeds uniformly at a proper distance and depth. (Fig. 1.5.)
Sickle:Used for manual harvesting. (Fig. 1.6.)
The following are the examples of Kharif and Rabi crops:
Explanation:
- The weeds are the unwanted plants that take up the growth nutrients from the soil and starved the species of desired plant.
- The vegetable crops of rabi season is infested with Anagallis arvensis, and Cyperus rotundus and the vegetable crops of kharif season is infested with Echinochloa colona and the Phyllanthus nisuri.
- The weedicide used to control the weeds of rabi and kharif crops is 2, 4-D.
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