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Internship report.nadeem

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M.Nadeem ashraf
University of poonch, Faculty of agriculture rawalakot

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Internship report.nadeem

  1. 1. “Comparative Nitrogen Use Efficiency of Ordinary Urea versus Neem Oil Coated Urea” Muhammad Nadeem Ashraf 2008-URTB-8285 Roll No: 17
  2. 2. INTRODUCTION Maize (Zea mays L) has an important position in the existing cropping systems of Pakistan. Maize accounts for 4.8% of the total cropped area and 3.5% of the value of agricultural output. The area under maize here is over one million hectares and production 3.5 million metric tons. Maize is also an important crop of AJK with about 0.122 million hectare of maize being planted during kharif.
  3. 3. Cont… Neem oil contains nitrification-inhibiting properties, Nitrification inhibitors depress the activities of Nitrosomonas thus less production of NO3 Neem (Azadirachta indica) based products restricts loss of chemical fertilizer and reduces cost of production due to less use of chemical fertilizers
  4. 4. OBJECTIVE To increase Nitrogen Use Efficiency(NUE) by coating urea with Neem oil. Department of Soil & Environmental Sciences
  5. 5. METHODOLOGY Pot Study Design: Two factor factorial with 3 replications 1st Factor:1. Ordinary urea2. Urea coating with 0.5% (w/w) neem oil3. Urea coating with 1% (w/w) neem oil
  6. 6. Cont… 2nd Factor1. 0 mg N kg-1 soil2. 90 mg N kg-1 soil3. 120 mg N kg-1 soil4. 150 mg N kg-1 soil Basal Dose: 25 mg P kg-1, 35 mg K kg-1 and 10 mg Zn kg-1 Duration: 40 days Statistical Analysis: Statistical analysis was done by using Statistix 8.1. LSD at 0.05 level of probability for treatment differences
  7. 7. RESULTS
  8. 8. Physico-chemical characteristics of selected soilSoil characters Unit valuepH - 7.65EC (1:1) (dS m-1) 0.47O.M (%) 0.83NO3-N (mg kg-1) 1.08P (mg kg-1) 0.61K (mg kg-1) 58Sand (%) 38.8Silt (%) 39.2Clay (%) 22Texture - Loam
  9. 9. RESULTSWhole shoot weight as affected with N Levels of ordinary urea and neem oil coated urea 7 No coating 0.5% Neem oil coating 6 Shoot weight (g plant -1 ) 1% Neem oil coating 5 4 3 2 1 0 0 90 120 150 Nitrogen Applied (mg N kg-1 soil)
  10. 10.  Nitrogen concentrationNitrogen concentration in whole shoot of maize as affected with nitrogen levels of ordinary urea and neem oil coated urea. No coating 0.5% NOCU 1% NOCU N Levels Mean N Levels Nitrogen concentration in whole shoot (%) 0 mg N kg-1 soil 1.643 1.689 2.2017 1.705 D 90 mg N kg-1 soil 2.013 2.1533 2.311 2.060 C 120 mg N kg-1 soil 2.201 2.0137 2.4397 2.317 B 150 mg N kg-1 soil 2.276 2.8063 2.721 2.601 A Mean (Neem oil coating) 2.033 B 2.240 A 2.239 A LSD (N Levels) = 0.111 LSD (Neem Oil) = 0.096 LSD (Treatment X Neem Oil) = 0.191
  11. 11. Nitrogen uptake by whole shoot of maize 180 No coating 160 0.5% Neem oil coatingNitrogen Uptake (%) 140 1% Neem oil coating 120 100 80 60 40 20 0 0 90 120 150 Nitrogen Applied (mg N Kg-1 soil)
  12. 12. NO3-N in soil after harvesting N Levels No coating 0.5% NOCU 1% NOCUN Levels Mean NO3-N in soil after harvesting (mg kg-1)0 mg N kg-1 soil 2.853 3.422 18.285 8.186 A90 mg N kg-1 soil 3.258 3.442 18.603 8.437 A120 mg N kg-1 soil 3.263 4.296 24.222 10.594 A150 mg N kg-1 soil 3.362 4.35 26.246 11.319 AMean (Neem oil coating) 3.183 B 3.881 B 21.839 A LSD (N Levels) = 5.91 LSD (Neem Oil) = 6.83 LSD (Treatment X Neem Oil) = 11.83
  13. 13. NH4-N in soil after harvesting N Levels No coating 0.5% NOCU 1% NOCUN Levels Mean NH4-N in soil after harvesting (mg kg-1)0 mg N kg-1 soil 39.465 24.542 8.651 24.220 D90 mg N kg-1 soil 40.801 24.585 11.333 25.573 C120 mg N kg-1 soil 47.923 33.887 17.831 33.067 B150 mg N kg-1 soil 55.328 35.989 18.102 36.473 AMean (Neem oil coating) 45.882 A 29.751 B 13.867 C LSD (Treatment) = 0.823 LSD (Neem Oil) = 0.713 LSD (Treatment X Neem Oil) = 1.425

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