Boron had a improved effect on common bean root dry weight.

boron atom · growth · Phaseolus vulgaris (common bean)Positive and negative results

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

1. negative
   A boron waste at 600 ppm or above decreased root and shoot lengths and fresh and dry weights of bean (Phaseolus vulgaris L.) seedlings.

   The Effects on Germination and Growth of Bean and Chickpea of Boron Waste · 2013

   Opposite direction

2. no effect
   Increasing boron concentrations did not affect germination variables.

   Botanical and physiological parameters response of black bean (Phaseolus vulgaris L.) cultivars under increasing boron concentrations · 2023

   Opposite direction

3. positive
   Supplied IAA and boron deficiency together restricted root growth more than either deficiency or IAA treatment alone.

   The Role of Boron in Plant Growth: IV. INTERRELATIONSHIPS BETWEEN BORON AND INDOL-3YL-ACETIC ACID IN THE METABOLISM OF BEAN RADICLES · 1968 · compared with either deficiency or IAA treatment separately

   Same directionAbout lacking this nutrient, so it counts the other way round

4. positive
   RDF plus 18 kg/ha zinc sulphate and 4 kg/ha boric acid gave the significantly highest residual effect on French bean growth.

   Residual Effect of Zinc and Boron on Growth and Yield of French bean (Phaseolus vulgaris L.)-Rice (Oryza sativa L.) Cropping system · 2012 · compared with other treatments

   Same direction

5. positive
   Boron-deficient bean roots contained about half the phosphorus per dry weight of controls.

   Boron Nutrition and Acid-soluble Phosphorus Compounds in Bean Roots1 · 1974 · compared with control

   Same directionAbout lacking this nutrient, so it counts the other way round

6. positive
   Applying 120 kg/ha nitrogen with 1.5 kg/ha boron significantly increased French bean plant height to 23.68 cm.

   Influence of Nitrogen and Boron on Growth and Yield of French Bean · 2023

   Same direction

7. positive
   Boron deficit inhibited stem growth apex growth.

   Patologiczne zmiany budowy morfologicznej pędu oraz anatomiczno-histologiczne u; łodydze fasoli (Phaseolus vulgaris L.) spowodowane brakiem boru w pożywce [Morphopathological and anatomohistalogical changes in bean shoots due to boron deficiency in the nutrient medium] · 2015

   Same directionAbout lacking this nutrient, so it counts the other way round

8. positive
   Zinc 45 kg/ha-1 with boron 0.5% gives significantly higher plant height (44.00 cm) than control.

   Influence of Zinc and Boron Application on Growth and Yield of French bean (Phaseolus vulgaris L.) · 2023 · compared with control

   Same direction

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