The 50% NPK, humic acid, EM and magnetite combination produced higher pea growth than 100% NPK alone, without a significant difference.

magnetite · growth · Lathyrus oleraceus (pea)Results agree

1 paper in the same direction as this claim

1. positive
   Magnetite at 300 kg fed-1 gave the highest pea biomass, height and leaf count.

   EFFECT OF SOME NATURAL MATERIALS ON PEA PLANT GROWN ON CALCAREOUS SOIL · 2014

   Same direction

other · growth · Lathyrus oleraceus (pea)Positive and negative results

17 papers in the same direction as this claim · 2 in the opposite direction

1. negative
   Combining humic substance and herbicide reduced pea root length in all varieties.

   Influence of soil humic substances and herbicides on the growth of pea(Pisum sativumL.) in nutrient solution¹ · 1994

   Opposite direction

2. no effect
   Short humic acid treatment did not alter pea seedling dry weight.

   Influence of physiologically active substances of the soil humus on the activity of glucose-6-phosphate-dehydrogenase in pea (Pisum sativum L.) roots · 1980

   Opposite direction

3. positive
   Biochar gave the greatest increases in plant height and shoot, root and grain dry weight.

   Bentonite and Biochar Mitigate Pb Toxicity in Pisum sativum by Reducing Plant Oxidative Stress and Pb Translocation · 2019

   Same direction

4. positive
   Combined compost and humic acid gave higher soil microbial carbon and nitrogen biomass.

   Compost and humic acid amendments are a practicable solution to rehabilitate weak arid soil for higher winter field pea production · 2023 · compared with all other treatments

   Same direction

5. positive
   Up to 10% fly ash significantly increased pea biomass and overall growth.

   Bioaccumulation of Heavy Metals in Pisum sativum L. Growing in Fly Ash Amended Soil · 2010

   Same direction

6. positive
   Potassium sulfate at 100 kg fed-1 plus 0.2% foliar humic acid gave the highest branch number, leaf number and plant height of pea.

   Effects of Potassium and Humic Acid on Amelioration of Soil Salinity Hazardous on Pea Plants · 2020

   Same direction

7. positive
   Folcare with zinc oxide nanoparticles improved pea crop growth.

   Growth and metabolism of pea ( Pisum sativum ) via biostimulants based on greener ZnO nanoparticles · 2023

   Same direction

8. positive
   pea biomass increased with amendment and residual effects.

   Transfer of Nickel from Polluted Soil to Pisum sativum L. and Raphanus sativus L. under Composted Green Amendment and Native Soil Microbes · 2017

   Same direction

11 papers more in this group

application · growth · Lathyrus oleraceus (pea)Positive and negative results

56 papers in the same direction as this claim · 8 in the opposite direction · 1 reporting no difference from an alternative

1. positive
   Both combined nitrogen–AsA treatments significantly increased vegetative growth, leaf composition, yield and seed quality relative to the control; the treatments did not differ significantly.

   Foliar Application of Ascorbic Acid Combined with Nitrogenous Fertilizer Positively Enhanced the Response of Pea Plants · 2018 · compared with control treatment

   Same directionCites this paper

2. no effect
   Soaking pea seeds in imazethapyr did not affect germination, emergence, or growth.

   Broomrape (Orobanche crenata) Control with Imazethapyr Applied to Pea (Pisum sativum) Seed · 1996

   Opposite direction

3. negative
   Seed soaking with inhibitor reduced shoot elongation in all four pea varieties by at least 50%.

   Inhibition of the Growth of Peas by Tris-(2-Diethylaminoethyl)-Phosphate Trihydrochloride · 1966

   Opposite direction

4. negative
   Water soaking decreased development of leaves, stipules, petioles and tendrils.

   Transplantation Experiments in Peas. III · 1943

   Opposite direction

5. no effect
   The seed soak did not seriously impair pea germination.

   ANTIBIOTIC XG AS A SEED TREATMENT FOR THE CONTROL OF LEAF AND POD SPOT OF PEAS CAUSED BY ASCOCHYTA PISI · 1950 · compared with diseased pea seed samples

   Opposite direction

6. no effect
   Foliar zinc did not affect plant height or stem diameter in either year.

   The Effects of Foliar Zinc Application on Yield and Quality Components of Pea (Pisum sativum L.) in Mediterranean Climate Conditions · 2022

   Opposite direction

7. negative
   Implanted pea seeds had lower germination percentage.

   The growth effect by N~(+) using a plasma immersion ion implanter of pea seed implanted · 2000

   Opposite direction

8. negative
   Higher acid concentration and longer soaking reduced germination rate.

   Effects of salicylic acid on germination of pea seed · 2005

   Opposite direction

57 papers more in this group