Hedgerows use more water, but increase efficiency, profit in young walnuts
AuthorsDavid A. Goldhamer
Robert H. Beede
G. Steven Sibbett
Roger K. Kjelgren
Rebecca C. Phene
David E. Ramos
Authors AffiliationsD.A. Goldhamer is Water Management Specialist, Department of Land, Air and Water Resources, UC Davis, located at the Kearney Agricultural Center, Parlier; R.H. Beede is Farm Advisor, Kings County; G.S. Sibbett is Farm Advisor, Tulare County; R.K. Kjelgren is former technician and current Associate Professor, Utah State University, Logan, Utah; R.C. Phene is former technician, Department of Pomology, UC Davis; D.E. Ramos is Pomology Specialist Emeritus, Department of Pomology, UC Davis.
Hilgardia 49(4):24-28. DOI:10.3733/ca.v049n04p24. July 1995.
Total water use was 18.8% greater for hedgerow plantings of walnut trees than for conventionally spaced trees during years 2 through 7 of this study. Cumulative yield-and revenue-water use efficiencies were much greater with the hedgerows through year 5, but differences narrowed there-after. The hedgerows had greater total yield, but lower crop value due to smaller nuts. Although individual nut weight was strongly correlated with nut load, the relationship between nut weight and nut density was independent of tree spacing. Total gross and net hedgerow revenues were greater.
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