This Chanel includes agricultural engineering techniques. तकनीकी संस्थानों एवं वैज्ञानिकों द्वारा विकसित आधुनिक तकनीक का स्थानान्तरण। समयबद्ध कृषि क्रियाओं के क्रियान्वयन के लिए कृषि यंत्रीकरण को बढावा। आमदनी एवं रोजगार के अवसरों को बढाने के लिए मिश्रित सघन खेती को बढावा। खेती को लाभकारी बनाने के लिए खेती की वैज्ञानिक तकनीकों को बढावा देना।
Soil conservation is the prevention of loss of the topmost layer of the soil from erosion or prevention of reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination. Slash-and-burn and other unsustainable methods of subsistence farming are practiced in some lesser developed areas. A consequence of deforestation is typically large-scale erosion, loss of soil nutrients and sometimes total desertification. Techniques for improved soil conservation include crop rotation, cover crops, conservation tillage and planted windbreaks, affect both erosion and fertility. When plants die, they decay and become part of the soil. Code 330 defines standard methods recommended by the U.S. Natural Resources Conservation Service. Farmers have practiced soil conservation for millennia. In Europe, policies such as the Common Agricultural Policy are targeting the application of best management practices such as reduced tillage, winter cover crops,[1] plant residues and grass margins in order to better address soil conservation. Political and economic action is further required to solve the erosion problem. A simple governance hurdle concerns how we value the land and this can be changed by cultural adaptation.[2] Soil carbon is a carbon sink, playing a role in climate change mitigation.
कनीय अभियंताओं की बहाली न करवाने हेतु सचिव, कृषि विभाग Agronomy वालो से कन्विंसड हैं। अतः बहाली आने की कोई संभावना नहीं है। संभवतः आंदोलन की आवस्यकता प्रतीत हो रही है।
The Resilience, Adaptation Pathways and Transformation Approach (RAPTA) has been developed to design, implement and evaluate interventions for achieving sustainability goals within highly uncertain and rapidly changing decision contexts.
Ruthenium(II)-arene RAPTA-type compounds have been extensively explored for their medicinal properties. Herein a comprehensive review of this class of compounds is provided. A discussion of the basic RAPTA structure is given together with the ways it has been modified to elucidate the key role of each part and to afford targeted derivatives. The various mechanistic studies conducted on RAPTA compounds are described and these are linked to the observed macroscopic biological properties. Ultimately, the review shows that certain RAPTA compounds display quite unique properties that point towards a clinical investigation.
A check dam is a small, sometimes temporary, dam constructed across a swale, drainage ditch, or waterway to counteract erosion by reducing water flow velocity. Check dams themselves are not a type of new technology; rather, they are an ancient technique dating from the second century A.D.
A check dam is a small, sometimes temporary, dam constructed across a swale, drainage ditch, or waterway to counteract erosion by reducing water flow velocity. Check dams themselves are not a type of new technology; rather, they are an ancient technique dating from the second century A.D.
Description A check dam is a small dam constructed across a drainage ditch, swale, or channel to lower the velocity of flow. Reduced runoff velocity reduces erosion and gullying in the channel and allows sediments to settle out. A check dam may be built from stone, sandbags filled with pea gravel, or logs. Applicability Check dams can be used where temporary channels or permanent channels are not yet vegetated, channel lining is infeasible and velocity checks are required. This practice may be used as a temporary or emergency measure to limit erosion by reducing flow in small open channels. This practice should be used with drainage areas of 2 acres or less. Check dams may be used: To reduce flow in small temporary channels that are presently undergoing degradation, Where permanent stabilization is impractical due to the temporary nature of the problem, To reduce flow in small eroding channels where construction delays or weather conditions prevent timely installation of non-erosive liners. Advantages Inexpensive and easy to install. Reduce velocity and may provide aeration of the water. Check dams prevent gully erosion from occurring before vegetation is established, and also cause a high proportion of the sediment load in runoff to settle out. In some cases, if carefully located and designed, these check dams can remain as permanent installations with very minor regrading, etc. They may be left as either spillways, in which case accumulated sediment would be graded and seeded, or as check dams to capture sediment coming off that site. Disadvantages/Problems Because of their temporary nature, many of these measures are unsightly, and they should be removed or converted to permanent check dams before dwelling units are rented or sold. Removal may be a significant cost depending on the type of check dam installed. Check dams are only suitable for a limited drainage area. May kill grass linings in channels if the water level remains high after rainstorms or if there is significant sedimentation. Reduce the hydraulic capacity of the channel. May create turbulence which erodes the channel banks. Clogging by leaves in the fall may be a problem.
A check dam is a small, sometimes temporary, dam constructed across a swale, drainage ditch, or waterway to counteract erosion by reducing water flow velocity. Check dams themselves are not a type of new technology; rather, they are an ancient technique dating from the second century A.D.
A check dam is a small, sometimes temporary, dam constructed across a swale, drainage ditch, or waterway to counteract erosion by reducing water flow velocity. Check dams themselves are not a type of new technology; rather, they are an ancient technique dating from the second century A.D.
