نتایج جستجو برای: Seedling’s quality

تعداد نتایج: 776445  

Journal: :جنگل و فرآورده های چوب 0
هادی درودی دانشجوی ‏دکتری، گروه جنگل داری دانشکدة منابع‏ طبیعی و علوم‏ دریایی دانشگاه تربیت‏ مدرس، نور، ایران ابراهیم خسروجردی استادیار مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی، مشهد، ایران معصومه شهابی کارشناس ‏ارشد مدیریت ‏بیابان، دانشگاه ‏علوم‏ کشاورزی و منابع ‏طبیعی گرگان، گرگان، ایران

in order to investigate the effect of root pruning in morphological and physiological characteristics of juniperus excelsa seedlings an experiment was carried out on transplanted one year-old seedlings. treatments included root pruning intensities (1-slight pruning (2-moderate pruning and 3- control (no root pruning)) .experiment design was completely randomized design. each treatment included ...

Journal: :Tree physiology 1997
P J Aphalo T Lehto

We studied the effects of light quality and nutrient supply on growth and nitrogen accumulation in silver birch (Betula pendula Roth) seedlings to test three hypotheses: (1) growth of birch seedlings is sensitive to changes in light quality; (2) the response of birch seedling growth to light quality depends on nutrient supply; and (3) assimilation and allocation of nitrogen by birch seedlings a...

2015
Stacy L. Clark Scott E. Schlarbaum Callie J. Schweitzer Eric J. Jokela

Artificial regeneration of oak has been generally unsuccessful in maintaining the oak component in productive upland forests of eastern North America. We tested visual grading effects on quality-grown northern red oak (Quercus rubra) seedlings planted in two submesic stands on the Cumberland Plateau escarpment of Tennessee, USA. Seedlings were grown for one year using advanced fertilization and...

Behnaz Akbarian Mansour Matloobi, Nasser Mahna

Recently much attention has been paid by horticulturists to light-emitting diodes as a new source of economical and spectral-selective light. The reason is mainly coming from their versatility in handling and mounting, long working time, wattage use efficiency and lower heat production. In this study we examined their potential in promoting seed germination and producing quality flower seedling...

2013
V. A Shanmuga Selvan P. Sivasamy Ayya Nadar Janaki Ammal

The clonal tea is known for its quality, nutrionally and medicinally valuable biochemical components. But the availability of the clonal tea is limited. Tea plantations all over south India is maximum engaged by the seedlings. Thus in order to enhace the quality of the made tea from seedlings a blending attempt was made and the biochemical components were quantified using the available protocol...

Journal: :Revista Brasileira de Fruticultura 2019

Journal: :جنگل و فرآورده های چوب 0
فاطمه رنجبر دانشجوی کارشناسی ارشد دانشکده منابع طبیعی دانشگاه گیلان کامبیز طاهری آبکنار دانشیار دانشکده منابع طبیعی دانشگاه گیلان کیومرث سفیدی استادیار دانشکده فناوری کشاورزی و منابع طبیعی دانشگاه محقق اردبیلی علی امیدی کارشناس ارشد اداره کل منابع طبیعی و آبخیزداری استان گیلان

the establishment and survival of seedlings is one of the main objectives of forest management which ensures continues production. the aim of this article is the investigation of dead trees effect on beech and hornbeam seedlings in masal's forests. for this reason, 30 dead trees were selected, and the control trees were selected in four aspects around the dead trees. they were the same as ...

2017
Roel C. Rabara Glenn Behrman Thomas Timbol Paul J. Rushton

Indoor farming is becoming a popular alternative approach in food production to meet the demand of a growing world population. Under this production system, artificial light provides the main source of illumination in sustaining plant growth and development. The use of light-emitting diodes (LEDs) is a popular source of artificial light for indoor farms due to its narrow light spectra, modular ...

2009
Nestor Gregorio John Herbohn Jerry Vanclay

The quality of planting material is one of the key factors that determine the success of tree farming and reforestation activities. In the Philippines, low quality seedlings are commonly used in smallholder plantings for reasons such as the limited supply of high quality seedlings and smallholders’ lack of awareness of the benefits of using high quality planting stock. The ACIAR-funded seedling...

2005
R. Kasten Dumroese Jeff Parkhurst James P. Barnett

In an operational trial, increasing the amount of nitrogen (N) applied to container longleaf pine seedlings by incorporating controlled release fertilizer (CRF) into the media improved seedling growth and quality. Compared with control seedlings that received 40 mg N, seedlings receiving 66 mg N through CRF supplemented with liquid fertilizer had needles that were 4 in (10 cm) longer as well as...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید