pruning · Yield · Juglans (walnuts)

Papers reporting a positive result 5

1. Alternate-year walnut pruning can boost yields, cut cost · 1994

   • positive
     Biennially pruned trees yielded more than annual or nonpruned trees in the year without pruning.

     compared with annually or nonpruned trees

   • positive
     Alternate-year pruning produced the highest income per acre after pruning costs.
   • no effect
     Annual pruning did not improve yield relative to nonpruning.

     compared with nonpruned trees

   • no effect
     Alternate-year pruning gave yields comparable to nonpruned and annually pruned trees in the year after pruning.

     compared with nonpruned and annually pruned trees

2. Effects of heavy cutting-back and bending branch on the number of new shoots,yield and root activity of adult‘Lvling'walnut · 2014

   • positive
     Combined pruning yielded 155.32 kg per 667 square metres, the highest yield.

     compared with bending branch

   • positive
     Combined pruning gave the highest single fruit weight, 12.22 g.

     compared with 4treatments

3. Effect of Cutting-off Frozen Branch on Physiological Metabolisn of‘Lyuling'Walnut After Frost · 2015

   • positive
     Single fruit weight was 12.21, 11.57 and 10.53 g for pruning April 20, pruning May 6 and control; April 20 pruning was the biggest.

     compared with no cutting off frozen branch

   • positive
     Yield per plant was 3.67, 2.99 and 2.03 kg for pruning April 20, pruning May 6 and control; April 20 pruning was the biggest.

     compared with no cutting off frozen branch

4. Girdling Effects on Fruit Maturity, Kernel Quality, and Nutritional Value of Walnuts (Juglans regia L.) alongside the Effects on Leaf Physiological Characteristics · 2021

   • positive
     Girdling increased kernel weight at late harvest.

     compared with late harvest

5. Impacts of Tree Thinning on Overall Productivity in Densely Planted Walnut Orchards · 2025

   • positive
     Thinning increased kernel weight by 26.79-41.13%.

     compared with an unthinned control (CK)

   • positive
     Thinning increased single fruit weight by 23.39-37.94%.

     compared with an unthinned control (CK)