1 Scope
2 Normative references
3 Terms and definitions
3.1 Productivity yield measurement
3.2 Trial demonstration yield measurement
3.3 Five-point sampling method
3.4 Coverage coefficient
3.5 Fresh green fruit coefficient
3.6 Dry fresh fruit coefficient
4 Yield measurement preparation
4.1 Measurement tools
4.2 Sample plot information
4.3 Composition of yield measurement experts
5 Basic situation investigation and timing of yield measurement
5.1 Basic situation investigation
5.2 Timing of yield measurement
5.2.1 Pre-harvest yield measurement
5.2.2 Actual harvest yield measurement
6 Sampling
6.1 Sample plots
6.1.1 For productivity yield measurement
6.1.2 For trial demonstration yield measurement
6.2 Sample plants
6.2.1 In the determined sample plot, use the "five-point method" to select 5 sample plants for measurement and mark them; do not choose edge trees.
6.2.2 Determine the township involved in the yield measurement, involving roadside trees and ancient single trees according to village investigation randomly select 5 as sample plants for measurement.
7 Yield Measurement
7.1 Productivity yield measurement
7.1.1 Calculation of number of plants per unit area
7.1.2 Calculation of average green fruit count per plant
7.1.3 Calculation of average weight of single green fruit per plant
7.1.4 Calculation of average green fruit production per plant
7.1.5 Calculation of green fruit yield per unit area
7.1.6 Calculation of fresh fruit yield per unit area
7.1.7 Calculation of dried fruit yield per unit area
7.2 Trial demonstration yield measurement
7.2.1 Canopy coverage calculation
7.2.2 Fruit picking and weighing
7.2.3 Sampling for fresh fruit weight
7.2.4 Calculation of single plant's fresh fruit production
7.2.5 Calculation of projected area fresh fruit yield per unit area
7.2.6 Calculation of fresh fruit yield per unit area
7.3 Yield calculation for roadside trees and ancient single trees in fresh fruits
8 Yield measurement report
Appendix A (informative)
Basic situation investigation form for sample plot
Appendix B (informative)
Productivity yield measurement survey form
Appendix C (informative)
Trial demonstration yield measurement survey form
Appendix D (informative)
Trial demonstration yield measurement table
References
T/YNFS 009-2023 history
2024T/YNFS 009-2023 Technical Regulations for Walnut Yield Determination