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@This document (Lesson 7 - Activity 2) is re-created by administrator on 23 August 2017
@


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@Initial revision
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    "content": "<h1>Activity 2: Earthworms and agricultural ecosystems&nbsp;</h1>\r\n\r\n<p style=\"text-align: justify;\"><br />\r\n<span style=\"font-size:20px;\">Earthworms play a very important role in the agricultural ecosystems. They eat decaying plant and animal materials and helps in decomposing it. </span></p>\r\n\r\n<blockquote>\r\n<p style=\"text-align: justify;\"><br />\r\nTheir&nbsp;burrowing activity enhances the aeration of the soil and brings minerals and other nutrients from the deeper levels of the soil to the surface that the plants could use it. Their excretion, called earth <strong>worm casts</strong>, contains a good amount of phosphorus and nitrogen, which are essentials for the plant growth.</p>\r\n</blockquote>\r\n\r\n<p style=\"text-align: justify;\"><br />\r\n<span style=\"font-size:20px;\">&nbsp;It is a well-known fact that if the soil has a good population of earthworms productivity of the crop increases in a great way. People culture earthworm to produce worm casts, which is used as manure for plants in the garden and crop fields. Cultivation of earthworms is called <strong>vermiculture</strong>.</span></p>\r\n\r\n<p><br />\r\n<span style=\"font-size:20px;\"><strong>Watch the video of earthworm given below</strong></span><br />\r\n<script type=\"text/javascript\" src=\"/static/ndf/bower_components/videojs/dist/video.min.js\"></script> <script type=\"text/javascript\" src=\"/static/ndf/bower_components/videojs/dist/video.js\"></script></p>\r\n\r\n<div>\r\n<div class=\"video-player-area\" id=\"video-player-59a10d0669602a015560aea8\">\r\n<div class=\"vidbak\">\r\n<video class=\"video-js vjs-skin-colors-clix vjs-big-play-button center\" controls=\"controls\" data-setup=\"{ &quot;playbackRates&quot;: [0.5, 1, 1.5, 2] }\" height=\"360\" id=\"59a10d0669602a015560aea8\" width=\"480\"><source codecs=\"avc1.42E01E, mp4a.40.2\" crossorigin=\"anonymous\" preload=\"metadata\" src=\"/media/7/7/b/cf89703f7a5fc1373568fbe126195d94409ca6c0c9bb1b84c6eb73cd4eaf0.mp4\" type=\"video/mp4\" /> <script>\r\n\t\t\tfunction myFunction() { \r\n\t\t\t    var vid = document.getElementById(id);\r\n\t\t\t    document.getElementById(\"mySpan\").innerHTML = \"Seeking: \" + vid.seeking;\r\n\t\t\t} \r\n\t\t\tfunction togglerTranscript(a){\r\n                $(a).next(\".transcript-data\").toggleClass(\"hide\");\r\n            };\r\n         \r\n\t\t\t</script> <!-- adding captions in different language--></video>\r\n</div>\r\n</div>\r\n</div>\r\n\r\n<p>\u200b<br />\r\n<span style=\"font-size:20px;\"><strong>Please talk to a gardener/ farmer or people who prepare vermicompost and collect the following information.</strong><br />\r\n<br />\r\nHow they prepare the compost?<br />\r\n<br />\r\nWhy are earthworms not seen in dry soil?<br />\r\n<br />\r\nWill adding of organic manure (e.g. cow dung) increase the growth of earthworms?<br />\r\n<br />\r\nWill the addition of artificial manure (e.g. urea) affect the earthworms negatively or positively?</span></p>\r\n",
    "content_org": "<h1>Activity 2: Earthworms and agricultural ecosystems&nbsp;</h1>\r\n\r\n<p><span style=\"font-size:20px;\">Earthworms play a very important role in the agricultural ecosystems. They eat decaying plant and animal materials and helps in decomposing it. They're burrowing activity enhances the aeration of the soil and bringing minerals and other nutrients from the deeper levels of the soil to the surface that the plants could use it. Their excretion, called earth worm casts, contain a good amount of phosphorus and nitrogen which are essentials for the plant growth. It is a known fact that if the soil has a good population of earthworms the crop productivity increases in a great way. People culture earthworm to produce worm casts, which is used as manure for plants in the garden and crop fields. Cultivation of earthworms is called vermiculture.<br />\r\n<br />\r\n<strong>Please talk to a gardener/ farmer or people who prepare vermicompost and collect the following information.</strong><br />\r\n<br />\r\nHow they prepare the compost?<br />\r\n<br />\r\nWhy are earthworms not seen in dry soil?<br />\r\n<br />\r\nWill adding of organic manure (e.g. cow dung) increase the growth of earthworms?<br />\r\n<br />\r\nWill the addition of artificial manure (e.g. urea) affect the earthworms negatively or positively?</span></p>\r\n\r\n<hr />\r\n<hr />\r\n<p>&nbsp;</p>",
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