Maximum wheat grain yield, 3.01 t ha-1, was produced with 120-110-70 NPK + 25 kg ha-1 sulphuric acid at first irrigation 25 days after sowing in saline sodic soil.

sulfuric acid · yield · Triticum aestivum (wheat)Positive and negative results

6 papers in the same direction as this claim · 1 in the opposite direction

1. negative
   At the highest salinity, plant height and tiller number declined at higher acid concentrations.

   Evalutaion Of The Interactive Effect Of Different Salinity Levels And Amendments On Wheat Productivity · 2025

   Opposite direction

2. positive
   Acid spraying raised grain yield on ammonium sulfate plots by 2.2 cwt./acre in the second year.

   EFFECTS OF CULTURAL TREATMENTS ON WHEAT AND ON THE INCIDENCE OF EYESPOT, LODGING, TAKE‐ALL AND WEEDS. Field Experiments 1945–8 · 1951

   Same direction

3. positive
   Sulphuric acid with deep tillage significantly increased wheat grain yield relative to control.

   Effect of Gypsum, Sulfuric Acid, Nano-Zeolite Application on Saline-Sodic Soil Properties and Wheat Productivity under Different Tillage Types · 2018 · compared with control

   Same direction

4. positive
   Sulphuric acid increased wheat grain yield relative to unamended and gypsum treatments.

   EFFECT OF SOIL AMENDMENTS AND ANHYDROUS AMMONIA APPLICATION AND THEIR INTERACTIONS ON SOME SOIL PROPERTIES AND WHEAT PRODUCTIVITY UNDER SALT AFFECTED SOILCONDITIONS · 2013 · compared with un-amended and gypsum treatments

   Same direction

5. positive
   In one year, the sulphuric acid spray increased wheat straw yields by an average of 17.6 cwt. per acre over controls.

   Close cereal cropping. Effect of cultural treatments of wheat on eyespot, lodging, take-all and weeds. · 1950 · compared with controls

   Same direction

6. positive
   Application of sulfuric acid resulted in higher rice and wheat yields than no sulfuric acid.

   Amelioration of Saline-Sodic Soils with Tillage Implements and Sulfuric Acid Application · 2007 · compared with no sulfuric acid application

   Same direction

7. positive
   Application of 120-110-70 NPK kg/ha with 25 kg/ha sulphuric acid at first irrigation gave the maximum grain yield of 3.01 t/ha in saline sodic soil.

   http://www.se.org.pk/File-Download.aspx?publishedid=218 · 2012 · compared with various management strategies

   Same direction

irrigation · yield · Triticum aestivum (wheat)Positive and negative results

797 papers in the same direction as this claim · 184 in the opposite direction · 7 reporting no difference from an alternative

1. negative
   Minimum irrigation lowered average winter wheat yield by 14% versus full irrigation.

   Performance of Double‐Cropped Winter Wheat–Summer Maize under Minimum Irrigation in the North China Plain · 2006 · compared with fully irrigated treatment (FI)

   Opposite direction

2. no effect
   Moderately saline water substituted for good quality water during part of the season maintained total wheat grain yield.

   Time of Salt Stress Affects Growth and Yield Components of Irrigated Wheat · 1994 · compared with good quality water

   Opposite direction

3. negative
   Saline irrigation caused soil salinization and reduced wheat growth and yield.

   Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation · 2019

   Opposite direction

4. negative
   Deficit irrigation in salt-affected soil reduced wheat productivity.

   Collaborative Impact of Compost and Beneficial Rhizobacteria on Soil Properties, Physiological Attributes, and Productivity of Wheat Subjected to Deficit Irrigation in Salt Affected Soil · 2022

   Opposite direction

5. negative
   Wastewater irrigation decreased plant height, leaf area and grain yield in wheat.

   Effect of Wastewater Irrigation on Photosynthesis, Growth, and Anatomical Features of Two Wheat Cultivars (Triticum aestivum L.) · 2020

   Opposite direction

6. no effect
   An additional 33 mm of irrigation did not increase grain yield.

   Source–sink balance and manipulating sink–source relations of wheat indicate that the yield potential of wheat is sink-limited in high-rainfall zones · 2010

   Opposite direction

7. no effect
   DI water saving had no effect on wheat yield.

   Yield and water productivity of maize and wheat under deficit and raised bed irrigation practices in Egypt · 2012

   Opposite direction

8. negative
   Limited irrigation yielded 99% of full irrigation for winter wheat.

   Cropping Systems for Stretching Limited Irrigation Supplies · 1993 · compared with fully irrigated

   Opposite direction

980 papers more in this group

fertilization · yield · Triticum aestivum (wheat)Positive and negative results

3,114 papers in the same direction as this claim · 284 in the opposite direction · 39 reporting no difference from an alternative

1. no effect
   Current high nitrogen practices do not significantly raise crop yields relative to optimum fertilization.

   Reducing environmental risk by improving N management in intensive Chinese agricultural systems · 2009 · compared with knowledge-based optimum N fertilization

   Opposite direction

2. negative
   Wheat yield declined by 0.04 Mg ha −1 yr −1 with 75 and 100% N-P-K fertilizer.

   Yield and Soil Nutrient Changes in a Long‐Term Rice‐Wheat Rotation in India · 2002

   Opposite direction

3. negative
   The authors concluded that N fertiliser could not compensate for the yield reduction in canola and wheat due to late sowing.

   Effects of sowing time and nitrogen fertiliser on canola and wheat, and nitrogen fertiliser on Indian mustard. I. Dry matter production, grain yield, and yield components · 2001

   Opposite direction

4. negative
   Genetic gain in winter wheat yield without fertiliser N was 0.021 t ha −1 y −1, smaller than at 215–250 kg/ha N.

   Responses of grain yield, biomass and harvest index and their rates of genetic progress to nitrogen availability in ten winter wheat varieties · 2006 · compared with 215–250 kg/ha N

   Opposite direction

5. no effect
   The fertilizing substances did not significantly change plant yields.

   The influence of chlorothalonil on the activity of soil microorganisms and enzymes · 2018

   Opposite direction

6. no effect
   Compost did not significantly affect wheat grain yield, biomass or harvest index.

   Responses of Wheat Yield, Macro- and Micro-Nutrients, and Heavy Metals in Soil and Wheat following the Application of Manure Compost on the North China Plain · 2016

   Opposite direction

7. no effect
   Wheat yields were similar in fertilized fallow and unfertilized green-manure plots.

   Wheat Yields, Nitrogen Uptake, and Soil Moisture Following Winter Legume Cover Crop vs. Fallow · 1998 · compared with unfertilized plots following a green manure crop

   Opposite direction

8. no effect
   Incorporation timing of feedlot cattle manure had no impact on soil or crop performance.

   Effect of rate, frequency and incorporation of feedlot cattle manure on soil nitrogen availability, crop performance and nitrogen use efficiency in east-central Saskatchewan · 2004

   Opposite direction

3,429 papers more in this group