You are here: Home
/ Publication Information
Title: Developing Management Techniques For Black Walnut to Stabilize the Annual Nut Supply
Author: Ponder, Felix, Jr. Jr.; Jones, James E.; Mueller, Rita;
Source: In: 92d Annual Report of the Northern Nut Growers Association; 2001 August 5-8; Cornell, NY. [Cornell, NY: Northern Nut Growers Association]: 60-69
Publication Series: Scientific Journal (JRNL)
Description: Two studies involving cultural methods to increase nut production of plantation black walnut are presented. In the first study, nut production was measured for 5 years to determine the effect of nitrogen (N) and potassium (K) fertilization separately, in combination, and with and without phosphorus (P) broadcast annually for 4 years at two rates. Fertilization significantly (P > 0.05) increased nut production. Treatments containing P with N and/or K were most effective for nut production. Doubling the rate of application did not cause a corresponding increase in nut production. The alternate bearing tendency that was present in year 3 of the study was not apparent in years 4 and 5. In the second study, we measured the effect of three levels of broadcast N fertilization (0 or control, 100 lbs/ac, 150 lbs/ac elemental N) and two levels of foliar applied boron (B) (with and without) on nut production and nutrition of plantation black walnut. Boron (3 lbs Solubor?/100 gals of water/ac) was sprayed on trees in the early catkin stage in a split plot arrangement. Whole plot treatments were the three rates of ammonium nitrate that were broadcast around trees in mid April and again in mid August. Leaf samples were collected in mid June and again in mid August for nutrient analyses. Nut production was higher for treatments with B compared to treatments without B, and leaf B concentration in samples collected in August increased for trees treated with B. There was an increase in leaf N for the highest N treatment, but nut production was not increased for any N rate.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
XML: View XML
Ponder, Felix, Jr.; Jones, James E.; Mueller, Rita 2001. Developing Management Techniques For Black Walnut to Stabilize the Annual Nut Supply. In: 92d Annual Report of the Northern Nut Growers Association; 2001 August 5-8; Cornell, NY. [Cornell, NY: Northern Nut Growers Association]: 60-69
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility