نتایج جستجو برای: old seedlings treatments included root pruning intensities 1

تعداد نتایج: 3554485  

Journal: :Tree physiology 1996
J M Johnson J Pritchard J Gorham A D Tomos

Root and hypocotyl elongation, water status and solute accumulation were studied in osmotically stressed seedlings of the tropical tree, Colophospermum mopane (Kirk ex Benth.) Kirk ex J. Léonard, which grows in hot arid areas of southern and central Africa. Seeds were imbibed for 24 h and then subjected to a polyethylene-glycol-generated osmotic stress of -0.03 (control), -0.2, -0.8, -1.6 or -2...

2007
Kent G. Apostol Douglass F. Jacobs Barrett C. Wilson Francis Salifu

Spring planting is standard operational practice in the Central Hardwood Region, though little is known about potential impacts of low root temperature (RT) common during spring on establishment success of temperate deciduous forest tree species. The effects of low RT on growth, gas exchange, and root respiration following winter dormancy were studied in 1-year-old northern red oak (Quercus rub...

2006
Benjamin

We tested the effects of eight site preparation treatments on early growth and survival of container-grown longleaf pine (Pinuspalustris Mill.) seedlings. Treatments included an untreated check, six combinations of two initial vegetation control treatments (chopping or herbicide) with three planting site conditions (flat [no additional treatment], mounding, or bedding), and a more intense treat...

Journal: :Tree physiology 2004
Pedro Villar-Salvador Rosa Planelles Juan Oliet Juan L Peñuelas-Rubira Douglass F Jacobs Magdalena González

Drought stress is the main cause of mortality of holm oak (Quercus ilex L.) seedlings in forest plantations. We therefore assessed if drought hardening, applied in the nursery at the end of the growing season, enhanced the drought tolerance and transplanting performance of holm oak seedlings. Seedlings were subjected to three drought hardening intensities (low, moderate and severe) for 2.5 and ...

1997

pre-planting exposure stress on two-year-old, bare-root Corsican pine (Pinus nigra Arnold. ssp. laricio var. Corsicana) seedlings. Seedlings were lifted from a nursery and exposed to ambient conditions for periods of up to 192 h before being planted in minirhizotrons. Exposure decreased seedling water potential, CO2 assimilation rate, leaf conductance and new root elongation, and increased mort...

Journal: :دانش گیاه پزشکی ایران 0
آیت الله سعیدی زاده استادیار دانشکده علوم کشاورزی، دانشگاه شاهد فهیمه نیاستی کارشناس دانشکده علوم کشاورزی، دانشگاه شاهد

in the course of the present study, samples were taken from the non-defoliant strain of verticillium dahliae (ss-4) from infected olive groves in toshan area in southern gorgan. root-knot nematode, meloidogyne javanica, was recovered from infested olive seedlings and after identification was reaned on tomato seedlings cv. rutgers. during the study, one-year-old seedlings of olive cultivars zard...

Journal: :Water 2022

High temperatures and droughts following winter dormancy can negatively affect seedling growth mortality. An open-field experiment was conducted to study the mortality of Larix kaempferi seedlings in response spring warming drought treatments determine whether could regain their capability once were discontinued. In May 2020, 1-year-old exposed four treatments: control, warming-only, drought-on...

Journal: :IOP conference series 2023

Abstract Coffee production success in Indonesia was strongly affected by culture technique, for instance, proper pruning. Pruning Arabica coffee seedling is one of techniques to boost productivity cutting the plant shoots and stems. This study aims determine effectiveness shoot pruning 50% on growth seedlings. Data processing carried out statistical methods compare or test average data two pair...

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