organic · Yield · Sorghum

Results differ27 papers: 20 positive, 7 negative or no effect · 1 pair of papers confirmed to differ

36 claims from these papers; 1 citation between them.

Papers whose results differ, checked claim by claim 1

1 pair of papers on this question report results that differ: an effect in one paper, the opposite effect or no effect in the other. Two model reviewers reading both claims accepted each pair.

Influence of Biosolids Rate on Chemical Properties of an Oxisol in São Paulo, Brazil (2006)
no changeSewage sludge did not influence first-year sorghum production under unfavorable soil moisture.
Comparative study on the effect of organic fertilizers on plant biomass and on organic carbon content of sandy and loamy soils (2026)
increaseDigested sewage sludge increased average sorghum yield by 58%.
What separates themTest system: field · controlled environmentCompare the two papers →

How these papers cite each other

1 citation between these papers: 1 on the same side, 0 across the two sides.

Positive result
Negative result or no effect
Citation, pointing to the cited paper
Citation across the two sides
Larger circle: more citations overall

Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.

Papers reporting a positive result 20

Straw‐mulch Rate Effect on Soil Water Storage and Sorghum Yield · 1978
- positive
  Mulch and additional water increased sorghum grain yield from 1,780 to 3,990 kg/ha.
cited by 1 paper here
Effect of mulches and transpiration suppressants on yield, water use efficiency and uptake of nitrogen and phosphorus by sorghum under dryland conditions of north-western India · 1982
- positive
  Straw mulch increased yield in all three years.
  compared with no mulch
Sweet sorghum grown on sludge-amended stripmine soil: a preliminary look at yields, composition and ethanol production. · 1983
- positive
  Bagasse yield was highest with 209 t sewage sludge.
Sorghum Yield and Soil Analysis from Sludge‐Amended Calcareous Iron‐Deficient Soil¹ · 1987
- positive
  Sludge improved yields.
Production potential and sustainability of food-fodder alley cropping system under rainfed conditions. · 2000
- positive
  Half inorganic plus half organic manure gave highest fodder and sorghum equivalent yields.
  compared with other manurial schedules
- positive
  Half inorganic plus half organic manure gave highest sorghum grain and stover yield.
  compared with other manurial schedules
The Effects Of Water Stress And Organic Matter On Yield, Water Consuption and Water Efficiency On Sorghum · 2006
- positive
  Water deficit of 25% with 250 gm organic matter gave highest sorghum seed yield in sandy loam.
- positive
  The same treatment gave highest seed yield in clay loam.
- negative
  Water deficit of 75% without organic matter gave lower sorghum yield.
Effect of Long Term Application of Organic Materials in Soil and its Effect on Soil Properties and Performance of Sorghum under Dryland Conditions during Post-rainy season · 2007
- positive
  Grain yield of sorghum was higher with 25 kg N ha−1 each through CR + Leucaena loppings (12.38 kg ha−1).
Sewage Sludge as Nitrogen Source for Irrigated Silage Sorghum · 2009
- positive
  Sewage sludge increased silage yield, dry matter yield, plant height and total N uptake relative to control.
  compared with control
Long-term effect of fertilization on soil chemical and biological characteristics and productivity under sorghum (Sorghum bicolor)- wheat (Triticum aestivum) system in Vertisol · 2011
- positive
  Integrated FYM and NPK increased sorghum productivity relative to control and other fertilizer treatments.
  compared with control and other fertilizer treatments
Influence of the Leaf Biomass of Piliostigma reticulatum on Sorghum Production in North Sudanian Region of Burkina Faso · 2013
- positive
  The single organic matter gave a higher sorghum grain yield than the control.
  compared with control
EFFECT OF LONG-TERM USE OF TILLAGE, RESIDUES AND N LEVELS IN SORGHUM (SORGHUM VULGARE (L)) – CASTOR (RICINUS COMMUNIS) CROPPING SYSTEM UNDER RAINFED CONDITIONS – CROP RESPONSES AND ECONOMIC PERFORMANCE – PART I · 2013
- positive
  Crop residue as mulch increased the yield of both crops, with an advantage under CT even without N application.
  compared with without N application (control)
cites 1 paper here
Impact of Brewery Waste Sludge on Sorghum (Sorghum bicolor L. Moench) Productivity and Soil Fertility in Harari Regional State, Eastern Ethiopia · 2016
- positive
  Nitrogen uptake by sorghum straw reached 44.25 kg ha-1 at 10 and 15 t ha-1 sludge, significantly above other treatments.
  compared with other brewery sludge and recommended rate of NP mineral fertilizer applications
- positive
  Sorghum yield and yield components were highest with 15 t ha-1 brewery sludge.
  compared with recommended NP fertilizers and other treatments
Response of fodder sorghum (Sorghum bicolor (L.) to sewage sludge treatment and irrigation intervals in a dryland condition · 2017
- positive
  Sun-dried sludge increased straw dry matter yield by 98% under 7-day irrigation.
  compared with control
- positive
  Sun-dried sludge increased straw dry matter yield by 19% under 10-day irrigation.
  compared with control
Effect of 22-Year-Long Conjunctive Use of Organic and Chemical Sources of Nutrients on Crop Yield, Soil Properties, and Nutrient Balance in Post-Monsoon Sorghum (Sorghum bicolor L.) in Peninsular Vertisols of India · 2018
- positive
  The crop residue and Leucaena treatment had higher partial factor productivity of 33 kg kg−1.
- positive
  The crop residue and Leucaena clippings treatment gave the highest sorghum yield of 1.19 Mg ha−1.
Effects of crops residues management systems on crops yields and chemical characteristics of tropical ferruginous soil in Western Burkina Faso · 2022
- positive
  Residue management and tillage significantly increased maize, sorghum and cotton yields after three years.
Comparative Evaluation of Different Natural Farming System and Its Impact on the Yield of Great Millet (Sorghum bicolor L.) · 2023
- positive
  Integrated crop management with half organic and half inorganic fertilizers and need-based organic pesticides produced significantly higher sorghum grain yield of 2405 kg ha-1.
Impacts of long-term fertilization on post-anthesis leaf senescence, antioxidant enzyme activities and yield in sorghum · 2023
- positive
  NPKM, NPKMS and MS promoted sorghum grain yield.
Effect of Eighteen Years of Continuous Crop Residue Application on Crop Yields, Soil P Fractions, and Crop P Uptake in Conservation Tillage Under Semi-Arid Tropical Rainfed Conditions · 2024
- positive
  Crop residue significantly increased stover yield of sorghum and cowpea
- positive
  Crop residue application increased sorghum grain yield by 7.9, 16.1 and 26.0% over no residue
  compared with no crop residue application
Effects of Urea and Goat Organic Manure on Growth and Yield of Sorghum (Sorghum bicolor L.) Under Rain Fed Sandy Soil of North Kordofan State, Sudan · 2025
- positive
  Goat organic manure and urea fertilizer increased grain yield and harvest index of sorghum.
- positive
  Goat organic manure and urea fertilizer increased plant height, straw dry yield and 1000 seeds weight of sorghum.
Comparative study on the effect of organic fertilizers on plant biomass and on organic carbon content of sandy and loamy soils · 2026
- positive
  Digested sewage sludge increased average sorghum yield by 58%.

Papers reporting a negative result or no effect 7

Influence of Crop Residue Removal on Yields of Corn, Sorghum, and Soybeans With No Tillage · 1981
- no effect
  Removing half the residue had little or no effect on yields.
- negative
  sorghum yield was 6 lower after complete surface residue removal.
  compared with residues were not removed
Interactions of gamma‐irradiated sewage, nitrogen and phosphorus for Sorghum on a calcareous soil · 1983
- no effect
  A 67 metric ton/ha sludge rate produced nearly the same sorghum yield as the nitrogen treatment.
  compared with nitrogen treatmentNo difference from an alternative treatment
Crop Residue Removal and Soil Productivity with No‐Till Corn, Sorghum, and Soybean · 1984
- no effect
  Removing 50 percent or adding 50 percent of surface residues had little or no effect on crop yields compared with no removal.
  compared with no removal (100%)
Influence of Biosolids Rate on Chemical Properties of an Oxisol in São Paulo, Brazil · 2006
- no effect
  Sewage sludge did not influence first-year sorghum production under unfavorable soil moisture.
Productivity and residual benefits of grain legumes to sorghum under semi-arid conditions in southwestern Zimbabwe · 2007
- no effect
  Crop residue incorporation had no significant effect on sorghum yield.
Crop and weed responses to residue retention and method of weeding in first two years of a hoe-based minimum tillage system in semi-arid Zimbabwe · 2009
- no effect
  Residue retention did not significantly change sorghum yield across soils in either season.
Sorghum growth in soil treated with sewage sludge from the textile industry · 2015
- no effect
  Textile sewage sludge rates gave the same sorghum grain production.

A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.

organic · Yield · Sorghum

Papers whose results differ, checked claim by claim 1

How these papers cite each other

Papers reporting a positive result 20

Papers reporting a negative result or no effect 7

organic on Sorghum against other targets

organic · yield on other organisms