8th Std SCIENCE - Class 6 - Crop production and management

(i) Preparation of soil (ii) Sowing (iii) Adding manure and fertilisers (iv) Irrigation (v) Protecting from weeds (vi) Harvesting (vii) Storage 1.3 Preparation of Soil The preparation of soil is the first step before growing a crop. One of the most important tasks in agriculture is to turn the soil and loosen it. This allows the roots to penetrate deep into the soil. The loose soil allows the roots to breathe easily even when they go deep into the soil. Why does the loosening of soil allow the roots to breathe easily? The loosened soil helps in the growth of earthworms and microbes present in the soil. These organisms are friends of the farmer since they further turn and loosen the soil and add humus to it. But why the soil needs to be turned and loosened? You have learnt in the previous classes that soil contains minerals, water, air and some living organisms. In addition, dead plants and animals get decomposed by soil organisms. In this way, various nutrients in the dead organisms are released back into the soil. These nutrients are again absorbed by plants. Since only a few centimetres of the top layer of soil supports plant growth, turning and loosening of soil brings the nutrient-rich soil to the top so that plants can use these nutrients. Thus, https://www.stannesschool.info/ 5thStd English – Class 1- /watch/ARQBlAjH64sHB 5thStdMaths – Class 1- /watch/8M21Qs0IyOjI1 5thStdMaths – Class 2- /watch/8P-CL2bKABvKC 5thStd Science – Class 1- /watch/4Qp3ZYvAjRKA3 5thStd Science – Class 2- /watch/QEto1gXBf-cBo 6thStd Science – Class 1 - /watch/wcb2xOsL21pL2 6thStd Science – Class 2- /watch/AfOkY0byQ2oyk 6thStd Science – Class 3 - /watch/UWQk88mLr3OLk 6thStd Science – Class 4 - /watch/EuQYf_CtYWttY 6thStd Science – Class 5 - /watch/cuFHI1O8Ogr8H 6th Science – Class 6 - /watch/c7tQGKO5Heg5Q 6thStd English – Class 1 - /watch/INRA90MzS0LzA 6thStd English – Class 2 - /watch/QlKVOQITNtXTV 6thStd English – Class 3- /watch/8iM3IOfWWIgW3 6thStdMaths – Class 1- /watch/I2z8H6qUe1pU8 6thStdMaths – Class 2 - /watch/4XMRF6zUt9TUR 6thStdMaths – Class 3 - /watch/U-Z3Ycl8nfj83 7th Std Science - Class 1- /watch/Ar8Ut3OiHG7iU 7thStd Science – Class 2 - /watch/IGz_FaQCTcOC_ 7thStd Science – Class 3 - /watch/wC-lqiStsGftl 7thStd Science – Class 4 - /watch/obBPmp6YiSsYP 7thStdMaths – Class 1 - /watch/M0e-kMEFfb6F- 7thStdMaths – Class 2 - /watch/wKyMtNftCQDtM 7thStdMaths – Class 3 - /watch/4AcCiAHIxOnIC 7thStd English – Class 1 - /watch/chGZhKjdi45dZ 7thStd English – Class 2- /watch/4RAxLL07tPQ7x 7thStd English – Class 3 - /watch/kzIUaE8EpQwEU 8thStd English - Class 1 - /watch/o0zj2TyswGVsj 8thStd English – Class 2- /watch/EkGhN5drCf2rh 8thStd English – Class 3- /watch/YhQtLTiy4ckyt 8thStd English – Class 4 - /watch/MdVIYumD7WrDI 8thStd English – Class 5- /watch/IzS_GzGyJ8Ry_ 8thStd Science – Class 1- /watch/MWYmG3-dryVdm 8thStd Science – Class 2 - /watch/k52SlzggIrlgS 8thStd Science – Class 3- /watch/QtD-bFkAvQgA- 8thStdScience – Class 4 - /watch/ce7UoTNd2n4dU 8thStd Science – Class 5 - /watch/YOpTzN-YDsTYT 8thStd Science – Class 6 - /watch/o0pAejUpSIJpA 8thStd Science – Class 7 - /watch/4s7GlJnNH5GNG 8thStdMaths – Class 1 - /watch/AIDIkRV_Z2S_I 8thStdMaths – Class 2 - /watch/0lvGHHk4Aru4G 9thStd Science – Class 1 - /watch/cKDoBD0y_kwyo 9thStd Science – Class 2- /watch/Yl42ytTlWaDl2 9thStd Science – Class 3 - /watch/4x4UVKKdmsVdU 9thStd Science – Class 4 - /watch/sD1KaPLGjp-GK 9thStd Science – Class 5- /watch/UHrpXkNLQqDLp 9thStd English – Class 1 - /watch/gzaSAhxgldQgS 9thStd English – Class 2 - /watch/ElS7jz3FHHnF7 9thStdMaths – Class 1- /watch/AelT9uhccNKcT 9thStdMaths – Class 2 - /watch/AT3B4FT49uU4B 10thStd English – Class 1- /watch/gMoHj27WydDWH 10thStd English – Class 2 - /watch/QBb97zW5frq59 10thStdEnglish – Class 3 - /watch/4cwBCLDOy-_OB 10thStd Science – Class 1- /watch/wnKIJ4DxJ6RxI 10thStd Science – Class 2 - /watch/o23euFq3AYt3e 10thStd Science – Class 3 - /watch/kmM39J7LR9rL3 10thStd Science – Class 4 - /watch/MNF8cGNEYHSE8 10thStd Science – Class 5- /watch/YdHFl2AETCkEF 10thStd Science – Class 6 - /watch/EWdGk_kAcR-AG 10th Std Social Science – Class 1 - /watch/AhUKso04dQ34K 10th Std Social Science – Class 2 - /watch/Q5lzbwTryBZrz

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