Applying 240 kg N/ha increased yield to 4.50 t/ha.

nitrogen · yield · Oryza sativa (rice)Positive and negative results

1,802 papers in the same direction as this claim · 193 in the opposite direction · 49 reporting no difference from an alternative

1. positive
   Raising nitrogen from 90 to 120 kg N/ha increased yield attributes.

   Drip Irrigation and Fertigation Effects on Aerobic Rice (Oryza sativa) in Semi-Arid Conditions of Telangana State · 2018 · compared with 90

   Same directionCites this paper

2. positive
   Increasing N significantly increased yield attributes, grain and straw yields, harvest index and N uptake.

   VALIDATION OF NITROGEN RECOMMENDATIONS FOR POPULAR RICE (Oryza sativa L.) VARIETIES OF COASTAL ANDHRA PRADESH · 2010 · compared with 120

   Same directionCited by this paper

3. positive
   A higher dose of nitrogen gave a positive response in growth and yield parameters of aerobic rice.

   Influence of Neem Coated Urea and Micronutrients on Performance of Rice under Aerobic Condition · 2018

   Same directionCites this paper

4. positive
   Nitrogen at 160 kg N ha-1 in 25% splits at sowing, 20, 40 and 60 DAS gave the highest panicle m-2 (309.3) in rice.

   Effect of Levels and Time of Nitrogen Application on Yield and Economics of Rice · 2022 · compared with the other treatments

   Same directionCites this paper

5. negative
   Green manure and rice straw nitrogen, alone or in combination with inorganic N, gave lower grain yield, agronomic efficiency and apparent nitrogen uptake than a standard split application of prilled urea.

   Long-term Comparison of the Agronomic Efficiency and Residual Benefits of Organic and Inorganic Nitrogen Sources for Tropical Lowland Rice · 1996 · compared with a standard split application of prilled urea

   Opposite direction

6. negative
   Chaffy grain number and chaffy grain weight per 5 panicles increased significantly with enhancing nitrogen doses.

   Physiological response of rice (Oryza sativaL.) genotypes to elevated nitrogen applied under field conditions · 2014

   Opposite direction

7. negative
   Excessive nitrogen yielded 2.68–6.31% less than appropriate nitrogen application.

   Excessive Nitrogen Application Leads to Lower Rice Yield and Grain Quality by Inhibiting the Grain Filling of Inferior Grains · 2022 · compared with appropriate nitrogen application (270 kg N ha−1)

   Opposite direction

8. negative
   SCU reduced rice yield, though not significantly.

   Effects of different types of slow- and controlled-release fertilizers on rice yield · 2021

   Opposite direction

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