15% compost tea with surfactants increased soybean productivity by 216%.

surfactant · yield · Glycine max (soybean)Positive and negative results

3 papers in the same direction as this claim · 3 in the opposite direction

1. negative
   Paraquat plus sodium chlorate and surfactant at R5 or R6 reduced yield, seed weight and subsequent viability traits.

   Effect of preharvest desiccants on Group IVGlycine maxseed viability · 2000

   Opposite direction

2. no effect
   Preharvest treatments, spray volume, and surfactant concentration did not affect soybean yield or harvestable losses.

   Herbicide Combinations for Preharvest Weed Desiccation in Early Maturing Soybean (Glycine max) · 1998

   Opposite direction

3. no effect
   Chloroxuron plus surfactant did not reduce soybean yield in weed-free plants.

   Weed Control and Environmental Factors Relating to the Activity of Chloroxuron and Selected Herbicides · 1969

   Opposite direction

4. positive
   Surfactant use lessened the negative effect of lower spray volumes on grain yield.

   USE OF SURFACTANT WITH DIFFERENT VOLUMES OF FUNGICIDE APPLICATION IN SOYBEAN CULTURE · 2018

   Same direction

5. positive
   Quizalofop-p-ethyl with chlorimuron ethyl plus surfactant gave the highest yield compared with other treatments.

   Performance of herbicides on effective weed management in soybean (Glycine max) crop · 2020 · compared with other treatments

   Same direction

6. positive
   Mixture of Harmony 3 g, Trend 0.2 l and Miura 0.4 l gave the maximum soybean harvest, 2.45 t/ha.

   The effectiveness of post-herbicides in soybean crops · 2020

   Same direction

fertilization · yield · Glycine max (soybean)Positive and negative results

1,020 papers in the same direction as this claim · 155 in the opposite direction · 16 reporting no difference from an alternative

1. no effect
   Applying 200 kg nitrogen fertilizer per hectare gave no further yield gain.

   Nitrogen nutrition of soybean in Brazil: Contributions of biological N₂ fixation and N fertilizer to grain yield · 2006

   Opposite direction

2. no effect
   Foliar fertilization did not significantly affect seed yield.

   Effect of Foliar Fertilization on Photosynthesis, Leaf Nutrition, and Yield of Soybeans¹ · 1978

   Opposite direction

3. negative
   Green manure sometimes reduced soybean yield in plots with weeds.

   Weed Control in Soybean (Glycine max) with Green Manure Crops · 1998

   Opposite direction

4. no effect
   Fertilizer N treatments did not change soybean seed yield at any of the 12 sites

   In‐Season Fertilizer Nitrogen Applications for Soybean in Minnesota · 2001 · compared with unfertilized control plots

   Opposite direction

5. no effect
   Inoculated cultivars did not increase N yield under increasing fertilizer N rates.

   Dinitrogen Fixation Measured by ¹⁵N Isotope Dilution in Two Canadian Soybean Cultivars¹ · 1982

   Opposite direction

6. no effect
   Soybean yield was similar across production systems and fertilization strategies.

   Normalized Difference Vegetation Index (NDVI) for soybean biomass and nutrient uptake estimation in response to production systems and fertilization strategies · 2023

   Opposite direction

7. negative
   Rows midway between bands had lower K uptake and productivity than rows over bands.

   Potassium Placement Effects on Yield and Seed Composition of No‐Till Soybean Seeded in Alternate Row Widths · 2003 · compared with soybean rows seeded above the K bands

   Opposite direction

8. negative
   Fertilizer N decreased soybean yield in two of seven years.

   Crop Rotation Affects Corn, Grain Sorghum, and Soybean Yields and Nitrogen Recovery · 2016

   Opposite direction

1,183 papers more in this group