Anil Sharma1, Sarvendra Kumar2, Shakeel Ahmad Khan3, Amit Kumar3, Javid Iqbal Mir2, Om Chand Sharma2, Desh Beer Singh2, Sanjay Arora4. 1. ICAR-Central Institute of Temperate Horticulture, Old Air Field, KD Farm, Rangreth, Jammu and Kashmir, 191132, India. magotra_anil@rediffmail.com. 2. ICAR-Central Institute of Temperate Horticulture, Old Air Field, KD Farm, Rangreth, Jammu and Kashmir, 191132, India. 3. ICAR- Indian Agriculture Research Institute, New Delhi, India. 4. ICAR-Central Soil Salinity Research Institute, Regional Research Station, Lucknow, UP, 226002, India.
Abstract
Nitrous-oxide emission and nitrate addition from agriculture to earth's environment are two main agriculture related anthropogenic causes of environmental degradation that needs greater attention. For addressing the aforesaid issue, new techniques/practices need to be developed and implemented. The present investigation, which was focused on this issue, resulted in developing a new mode of nitrogen (N) placement, i.e. 'mid rib placement upper to corms in two splits (MRPU-2S)', that could reduce nitrous oxide N emission by around 70.11% and, nitrate N leaching and runoff by around 68.26 and 67.09%, respectively, over conventional method, in saffron growing soils of northwest Himalayas. Besides plummeting environmental degradation, MRPU-2S further resulted in enhancing saffron yield by 33.33% over conventional method. The findings of the present investigation were used to develop new empirical models for predicting saffron yield, nitrate N leaching and nitrous-oxide N emission. The threshold limits of nitrate N leaching and nitrous oxide N emission have also been reported exclusively in the present study.
n class="Chemical">Nitrous-oxide emissionpan> anpan>d pan> class="Chemical">nitrate addition from agriculture to earth's environment are two main agriculture related anthropogenic causes of environmental degradation that needs greater attention. For addressing the aforesaid issue, new techniques/practices need to be developed and implemented. The present investigation, which was focused on this issue, resulted in developing a new mode of nitrogen (N) placement, i.e. 'mid rib placement upper to corms in two splits (MRPU-2S)', that could reduce nitrous oxide N emission by around 70.11% and, nitrate N leaching and runoff by around 68.26 and 67.09%, respectively, over conventional method, in saffron growing soils of northwest Himalayas. Besides plummeting environmental degradation, MRPU-2S further resulted in enhancing saffron yield by 33.33% over conventional method. The findings of the present investigation were used to develop new empirical models for predicting saffron yield, nitrate N leaching and nitrous-oxide N emission. The threshold limits of nitrate N leaching and nitrous oxide N emission have also been reported exclusively in the present study.
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