Trunk Implantations of Dicrotophos for Cone-Insect Control in Slash Pine Seed Production Stands1

1971 ◽  
Vol 64 (5) ◽  
pp. 1295-1298 ◽  
Author(s):  
Edward P. Merkel ◽  
Gary L. DeBarr
Keyword(s):  
Seed Production ◽  
Slash Pine ◽  
Insect Control

Cone and Seed Yields from Slash Pine Seed Orchards

1994 ◽  
Vol 18 (3) ◽  
pp. 122-127 ◽  
Author(s):  
Gregory L. Powell ◽  
Timothy L. White
Keyword(s):  
Seed Production ◽  
Seed Orchard ◽  
Pinus Elliottii ◽  
Slash Pine ◽  
Recording System ◽  
Yield Data ◽  
Seed Orchards ◽  
Orchard Management ◽  
Intensively Managed ◽  
Seed Yields

Abstract The Cooperative Forest Genetics Research Program (CFGRP) initiated a slash pine (Pinus elliottii Engelm. var. elliottii) seed orchard management recording system (SOMRS) in 1985 to quantify cone and seed yields of slash pine orchards in the cooperative program. First, historical data were obtained from CFGRP slash pine seed orchards. Secondly, starting in 1985, cultural treatments and production yield data have been collected annually from 56 slash pine seed orchards located throughout Florida, Georgia, and Alabama. The vast majority of these orchards are intensively managed for seed production including the use of fertilizer, herbicide, and up to 10 applications of insecticide annually. From 1980 through 1990, the average seed yield from mature orchards (orchards greater than 14 yr old) was 25.1 bushels of cones, and 27.3 lb of seed/ac. For pounds per acre, orchards reach 50% and 90% of full production at ages 11 and 18 yr from grafting, respectively. The use of insecticides in slash pine seed orchards approximately doubles orchard yields. The CFGRP slash pine seed orchard management recording system (SOMRS) can aid orchard managers in determining factors that limit or promote seed production. South. J. Appl. For. 18(3):122-127.

A Southwide Test of Bifenthrin (Capture®) for Cone and Seed Insect Control in Seed Orchards

1994 ◽  
Vol 18 (2) ◽  
pp. 72-75
Author(s):  
W. J. Lowe ◽  
L. R. Barber ◽  
R. S. Cameron ◽  
G. L. DeBarr ◽  
G. R. Hodge ◽  
...  
Keyword(s):  
South Carolina ◽  
Loblolly Pine ◽  
Seed Orchard ◽  
Slash Pine ◽  
Insect Control ◽  
Seed Orchards ◽  
Southern States ◽  
Pinus Taeda L ◽  
Cone And Seed Insects ◽  
Aerial Sprays

Abstract In 1991, a Southwide study to evaluate the efficacy of bifenthrin (Capture®) for cone and seed insect control was established in six loblolly pine (Pinus taeda L.) and three slash pine (P. elliottii Engelm.) seed orchards. A control (no treatment), Capture® (bifenthrin), and Guthion® (azinphosmethyl) treatments were established in each seed orchard. Five aerial sprays were used to apply the insecticides during the growing season. At each spray Guthion® was applied at 3 lb ai/ac. Capture® was applied at 0.2 lb ai/ac for the first spray and 0.1 lb ai/ac for the other four sprays. Under the conditions of this study, Capture® was as effective in controlling cone and seed insects as the standard operational Guthion® treatment. Insecticide treatment resulted in a 42% and 17% increase in the number of sound seeds produced per conelet for loblolly and slash pine, respectively. Local need registration (24C) exists in several states, and seed orchard managers can currently use Capture® in Alabama, Arkansas, Georgia, Louisiana, Mississippi, Oklahoma, South Carolina and Tennessee. Seed orchard managers in other southern states need to determine if a 24C label is available in their state prior to useage. South. J. Appl. For. 18(1):72-75.

Effect of nine growth retardants applied to loblolly and slash pine

1982 ◽  
Vol 12 (1) ◽  
pp. 112-114
Author(s):  
Robert C. Hare
Keyword(s):  
Seed Production ◽  
Loblolly Pine ◽  
Seed Orchard ◽  
Growth Retardant ◽  
Slash Pine ◽  
Growth Retardants ◽  
Foliar Sprays ◽  
Retarded Growth ◽  
Foliage Spray

In an effort to dwarf seed orchard trees without reducing fruitfulness, nine growth-retardant chemicals were applied at several concentrations each as either aqueous foliar sprays or oil-based bark bands. All treatments which significantly retarded growth also caused injury or death. Mefluidide, as a 0.7% foliage spray, reduced growth and caused only minimal injury. Effects of the chemicals on seed production could not be observed, as no control or treated trees flowered. Slash pine was more sensitive to the chemicals than loblolly pine.

Some insects affecting Penstemon seed production

2012 ◽  
Vol 13 (2) ◽  
pp. 107-111
Author(s):  
R. Hammon ◽  
M. Franklin
Keyword(s):  
Seed Production

PRIMING AS THE FACTOR OF INCREASE OF EFFICIENCY SEED PRODUCTION OF BIRDSFOOT TREFOIL

2020 ◽  
Author(s):  
Vladimir Zolotarev
Keyword(s):  
Seed Production ◽  
Characteristic Property ◽  
Seed Priming ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
Germination Energy ◽  
Field Germination

A characteristic property of legumes is the formation of hard-stone seeds. To use such seeds for sowing, it is necessary to carry out measures to increase their seeding indicators. The article provides an overview of methods of pre-sowing preparation of seeds, priming (Seed Priming). The harvest of Birdsfoot trefoil (Lotus corniculatus L.) can contain up to 90% or more hard-stone seeds. Mechanical priming of hard-stone seeds of Birdsfoot trefoil increases their germination energy and field germination.

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