Volume 41 Number 3 Article 6 Pages: 94-98
Year 1987 Month 7
Title: Scheduling Irrigation of Pecans in Louisiana
Authors: R.J. Edling, M.L. Hummel, J.E. Boudreaux, M.G. Lartigue and V. Taylor
Citation
Abstract:
Research to alleviate moisture and nitrogen
stress was conducted.
An eleven year old pecan
orchard near Baton Rouge, Louisiana was trickle
irrigated.
Fertilizer was injected into the irrigation system on the irrigated trees and applied
on the surface by hand on the non-irrigated
trees.
Soil moisture was monitored with gypsum
blocks and daily irrigation amount determined
with a Class A evaporation pan.
Irrigation was
initiated at an estimated 30 percent soil moisture
depletion.
Nitrogen fertilizer at the rate of 0.9
kg per year tree age was applied to all trees and
an addtional 110 g per year tree age was applied
as sidedress to halt of the trees.
The tests were
run for three years.
Results indicate an interaction between cultivar, irrigation and sidedressing.
Therefore, fertilizer injection through
the trickle irrigation system may be used to
advantage on select cultivars.
The removal of
either moisture or nitrogen stress makes the
other factor important. 'Sumner,' 'Caddo,' and
'Candy' were the top producers, while 'Cherokee,' and Tejas' were the low producers.
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