Zaid<\/strong> (Summer)<\/td>March \u2013 April<\/td> June \u2013 July<\/td> Watermelon, Cucumber, Muskmelon, Pumpkin<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nCase Study: The Weather Keepers of Ladakh<\/strong> In extreme environments like the cold desert of Ladakh, the farming window is exceptionally short (May to September<\/strong>). Here, temperatures range from 30\u00b0C<\/strong> in summer to -25\u00b0C <\/strong>in winter. High humidity (70-74%) leads to evaporation losses, while unpredictable icy winds can destroy hard labor in hours. Furthermore, weather alerts help protect livestock\u2014such as goats, yaks, and double-humped camels\u2014from disease outbreaks.<\/p>\n\n\n\nWhile national forecasts are helpful, the most successful farming often relies on localized data collected right at the source.<\/p>\n\n\n\n
<\/span>3. THE MINI-OBSERVATORY: MEASURING WEATHER AT SCHOOL<\/strong><\/span><\/h2>\n\n\n\nHands-on meteorological observation develops a scientific temper, allowing students to track the specific micro-climate of their own region to make informed decisions.<\/p>\n\n\n\n
<\/span>Building Your Weather Tools<\/strong><\/span><\/h3>\n\n\n\n<\/span>1. The Rain Gauge<\/strong><\/span><\/h4>\n\n\n\n\nStep 1:<\/strong> Use a transparent plastic bottle with a flat base.<\/li>\n\n\n\nStep 2:<\/strong> Cut off the top 1\/3 of the bottle to create a funnel.<\/li>\n\n\n\nStep 3:<\/strong> Place the funnel upside down inside the bottle to prevent evaporation.<\/li>\n\n\n\nStep 4:<\/strong> Tape a ruler (cm or mm) to the outside.<\/li>\n\n\n\nStep 5:<\/strong> Place in an open area at a height.<\/li>\n\n\n\nStep 6:<\/strong> After rain, check the water level against the scale.<\/li>\n\n\n\nStep 7:<\/strong> Note the rainfall and compare it to data measured by a weather app.<\/strong><\/li>\n<\/ul>\n\n\n\n<\/span>2. The Dry-Wet Bulb Thermometer<\/strong><\/span><\/h4>\n\n\n\n\nStep 1:<\/strong> Take two thermometers and a plastic bottle.<\/li>\n\n\n\nStep 2:<\/strong> Wrap the bulb of one in wet cotton gauze (the “wet bulb”).<\/li>\n\n\n\nStep 3:<\/strong> Attach both to the bottle\u2014wet bulb on one side, dry on the other.<\/li>\n\n\n\nStep 4:<\/strong> Tie a thread to the bottle top and spin it.<\/li>\n\n\n\nStep 5:<\/strong> Record both readings. The difference helps find humidity. For absolute precision, use a psychrometric chart.<\/strong><\/li>\n<\/ul>\n\n\n\n<\/span>3. The Wind Vane<\/strong><\/span><\/h4>\n\n\n\n\nStep 1:<\/strong> Cut a circular cardboard disc and mark N, S, E, and W.<\/li>\n\n\n\nStep 2:<\/strong> Cut a cardboard arrow and a separate “tail” and join them.<\/li>\n\n\n\nStep 3:<\/strong> Push a pencil through the disc center.<\/li>\n\n\n\nStep 4:<\/strong> Attach the arrow to the pencil eraser with a pin so it rotates freely.<\/li>\n<\/ul>\n\n\n\nDid You Know?<\/strong> The dry-wet bulb thermometer identifies air humidity. If the temperature difference is small, the air is humid; if the difference is large, the air is dry because water evaporated quickly from the wet bulb, cooling it down.<\/p>\n\n\n\n<\/span>4. SOIL HEALTH: TESTING THE FOUNDATION<\/strong><\/span><\/h2>\n\n\n\nSoil fertility is not just about “dirt”; it is a dynamic, living ecosystem consisting of a precise balance of minerals, organic matter, and pore spaces filled with air and water.<\/p>\n\n\n\n
<\/span>Soil Sample Collection (The 9-Step Process)<\/span><\/h3>\n\n\n\n\nDivide the field in a zig-zag manner<\/strong> to ensure a representative sample.<\/li>\n\n\n\nScrape away surface stones, leaves, and debris.<\/li>\n\n\n\n Dig a “V” shaped hole 15\u201320 cm deep using a trowel.<\/li>\n\n\n\n Remove a thick slice of soil from both faces of the “V,” top to bottom.<\/li>\n\n\n\n Mix samples from different spots together in a heap.<\/li>\n\n\n\n Divide the heap into four quarters.<\/li>\n\n\n\n Discard two opposing quarters and mix the remaining two.<\/li>\n\n\n\n Repeat quarters\/discarding until only a small, clean sample remains.<\/li>\n\n\n\n Bag the sample and label it with the date and previous crop history.<\/li>\n<\/ol>\n\n\n\n<\/span>The Mason Jar Texture Test<\/span><\/h3>\n\n\n\nDetermine the physical composition of your soil to prevent root suffocation or wilting.<\/p>\n\n\n\nResult<\/td> Action to be Taken<\/td><\/tr> Clay > 20%<\/strong> (Risk of waterlogging)<\/td>Add river sand or red-garden soil to improve drainage.<\/td><\/tr> Sand > 80%<\/strong> (Risk of wilting)<\/td>Add compost or garden soil to increase nutrient and water retention.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<\/span>pH Testing & Amendments<\/span><\/h3>\n\n\n\nSoil pH determines how easily plants absorb nutrients. Most plants prefer slightly acidic to neutral soil (pH 6\u20137).<\/p>\n\n\n\n
\nAcidic Soil (pH < 6):<\/strong> Add compost, wood ash, or lime\/dolomite to neutralize.<\/li>\n\n\n\nBasic Soil (pH > 8.5):<\/strong> Add gypsum or sulphur fertilizers. Crucially, perform a “soil wash” by adding extra water and draining it to physically leach out excess salts.<\/strong><\/li>\n<\/ul>\n\n\n\n<\/span>5. SEED SELECTION & ORGANIC INPUTS<\/strong><\/span><\/h2>\n\n\n\nA fertile field cannot save a weak seed. Seed quality is a strategic defense against pests and poor germination.<\/p>\n\n\n\n
The Floating Method for Seed Selection<\/strong> To ensure high germination rates, follow this precise recipe:<\/p>\n\n\n\n\nTake 1L of water<\/strong> in a bucket.<\/li>\n\n\n\nAdd 100g of salt (NaCl)<\/strong> to increase water density.<\/li>\n\n\n\nAdd 250g of seeds<\/strong> (e.g., wheat).<\/li>\n\n\n\nWait 3\u20135 minutes.<\/li>\n\n\n\n Identify:<\/strong> Hollow, damaged, or infected seeds will float. Healthy, viable seeds will sink.<\/li>\n\n\n\nDiscard floaters; wash and dry healthy seeds in the shade.<\/li>\n<\/ol>\n\n\n\nSeed Dormancy<\/strong> Dormancy is a natural survival state. To “wake up” seeds for faster sprouting, some\u2014like rice\u2014can be soaked in hot water for a few hours before sowing.<\/p>\n\n\n\nOrganic Fortification (Student Recipes)<\/strong><\/p>\n\n\n\n\nVermicompost:<\/strong> Mix 50kg of agro-waste<\/strong> and 50kg of cow dung<\/strong> in a pit. Introduce worms and keep moist. It is ready for harvest in just six days<\/strong>.<\/li>\n\n\n\nDashaparni Arka:<\/strong> A potent pesticide made from 10 materials. Remove leaves from stems and weigh 200g of leaves<\/strong> (Neem, Karanj, Tulsi, etc.). Add to a 20L bucket<\/strong> with 225g cow dung<\/strong>,