نتایج جستجو برای: planting stock

تعداد نتایج: 104308  

Journal: :Irish geography : bulletin of the Geographical Society of Ireland 2010
Tine Ningal Gerald Mills Pamela Smithwick

While urban areas are often considered to be comprised chiefly of artificial surfaces, they can contain a substantial portion of green space and a great diversity of natural habitats. These spaces include public parks, private gardens and street trees, all of which can provide valuable environmental services, such as improved air quality. Trees play a particular role in cities as they are often...

1999
JAMES D. HAYWOOD ALLAN E. TIARKS MARY A. SWORD

Following si te preparation, three cultural t reatments and three open-poll inated loblolly pine (Pinus taeda L.) families were studied on a .gently sloping Beauregard silt loam in central Louisiana. The treatments were: (1) fertilization (either broadcast application of 177 kg N and 151 kg P/ha or none); (2) herbicide application (either broadcast application of herbicides during the first thr...

Journal: :Journal of environmental management 2017
Odhran S O'Sullivan Alison R Holt Philip H Warren Karl L Evans

Urban road verges can contain significant biodiversity, contribute to structural connectivity between other urban greenspaces, and due to their proximity to road traffic are well placed to provide ecosystem services. Using the UK as a case study we review and critically evaluate a broad range of evidence to assess how this considerable potential can be enhanced despite financial, contractual an...

Journal: :International Journal of Enviornment and Climate Change 2023

Vegetative propagation is a fantastic way to improve the quality of forest tree planting stock. It often used in seed orchards and clone banks as method genotype preservation. greatest option when low poor germination rates limit availability stock quality. This review article discusses different vegetative methods, including macro-propagation by cuttings, micropropagation through tissue cultur...

2011
Nacer Bellaloui Krishna N. Reddy Anne M. Gillen Daniel K. Fisher Alemu Mengistu

Information on the effect of planting date and irrigation on soybean [Glycine max (L.) Merr.] seed composition in the Early Soybean Production System (ESPS) is deficient, and what is available is inconclusive. The objective of this research was to investigate the effects of planting date on seed protein, oil, fatty acids, sugars, and minerals in soybean grown under irrigated (I) and non-irrigat...

Journal: :Journal of nematology 1996
E E Perez J D Mueller S A Lewis

During the 1991 and 1992 soybean growing seasons, field plots were established in South Carolina to study the effect of planting date on at-planting nematode densities and subsequent yield losses caused by Hoplolaimus columbus. The susceptible and intolerant soybean cv. Braxton was planted on five dates from to May to 28 June in 1991 and from 12 May to 28 June in 1992. Nematodes were recovered ...

2017
Nguyen V. Long Yared Assefa Rai Schwalbert Ignacio A. Ciampitti

For maize (Zea mays L.), early planting date could be of advantage to high yields but a review of planting date effect on high-yielding data is not yet available. Following this rationale, a synthesis-analysis was conducted from the farmer annual maize contest-winner data (n = 16171 data points; 2011-2016 period); cordially provided by the National Corn Growers Association and a scientific lite...

2015
Zhan Fengmei Yao Hui Li Jiahua Zhang

The Northeast China (NEC) was the most important agriculture areas and known as the Golden-Maize-Belt. Based on observed crop data and crop model, we design four simulating experiments and separate relative impacts and contribution under climate change, planting date shift, and varieties change as well change of varieties and planting date. Without planting date and varieties change, maize yiel...

2006
D. F. Jacobs K. E. Woeste

Morphological quality of black walnut (Juglans nigra L.) seedlings largely dictates their capacity to establish well in plantations and their performance potential for use as rootstocks in grafting. Larger seedlings and rootstocks, attained from propagation at relatively low nursery sowing densities, have comparatively more expansive root systems for exploitation of soil resources and greater n...

Journal: :South-east European forestry 2021

Degraded forests are among of the most important environmental and commercial problems around world. Turkey has 22.74 million hectares forest area, out which 9.656 ha (42%) unproductive. To transform these unproductive into productive ones, restoration including rehabilitation is one best actions. In this sense, juniper species play an role for degraded lands because they drought-tolerant withs...

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