نتایج جستجو برای: rgr

تعداد نتایج: 592  

Journal: :Indian Journal of Agronomy 2023

A field experiment was conducted during the winter (rabi) seasons of 2015–16 and 2016–17 at Punjab Agricultural University, Ludhiana, to study effect staggered sowing on growth indices, photosynthetic parameters productivity barley (Hordeum vulgare L.) in relation different cutting management. The laid out a split-plot design with 3 dates, viz. 15 October, 30 October November main plots 5 manag...

Journal: :E3S web of conferences 2022

Black and red rice contain nutritional values not found in white rice. They anthocyanins which are beneficial to health. Drought stress can potentially reduce yield. So, it is necessary develop local black into tolerant cultivars. This study used a completely randomized design (CRD) with cultivar factor (V) drought level (K). treatment was carried out when the plants were 35-95 DAP (days after ...

Journal: :Agricultural Science Digest – A Research Journal 2023

Background: The growth of birds is a function both genetics and environment involving change leading into improvement in weight, shape, size, volume, etc. Study important non-genetic factors view formulating future selection breeding strategies different poultry species. Methods: present study was done on 1246 numbers Japanese Quails (Coturnix coturnix japonica) two strains i.e., black white di...

ژورنال: :تحقیقات گیاهان دارویی و معطر ایران 2015
نازنین آتشی مصطفی حقانی حجت الله محمدی محمد عبدالهی

اسانس‏های گیاهی به عنوان جایگزین مناسبی برای سموم شیمیایی محسوب می‏شوند. در این تحقیق اثر اسانس‏های ferulago angulata (schlecht.) boiss. (apiaceae) و ballota aucheri boiss. (lamiaceae) بر شاخص‏های تغذیه‏ای حشرات کامل شپشه قرمز آرد (tribolium castaneum (col.: tenebrionidae))،کهیکی از آفات مهم محصولات انباری به شمار می رود، بررسی شد. شاخص‏های نرخ رشد نسبی (rgr)، نرخ مصرف نسبی (rcr)، کارآیی تبدیل ...

2016
Jianfeng Chen Te Cao Xiaolin Zhang Yilong Xi Leyi Ni Erik Jeppesen

To evaluate the relative importance of photosynthetic versus morphological adaptations of submersed macrophytes to low light intensity in lakes, rapid light curves (RLCs), morphological parameters, relative growth rate (RGR), clonal reproduction and abundance of two submersed macrophytes (Potamogeton maackianus and Vallisneria natans) were examined under 2.8%, 7.1%, 17.1% and 39.5% ambient ligh...

Journal: :American journal of botany 2012
Rebecca E Drenovsky Albina Khasanova Jeremy J James

PREMISE OF STUDY Functional trait comparisons provide a framework with which to assess invasion and invasion resistance. However, recent studies have found evidence for both trait convergence and divergence among coexisting dominant native and invasive species. Few studies have assessed how multiple stresses constrain trait values and plasticity, and no study has included direct measurements of...

2008
ZAMIN SHAHEED SIDDIQUI

The present study was carried out in a field located at Department of Botany, University of Karachi where soil was treated with various concentrations of pesticides before sowing. Combined effects of pesticides on soybean growth and nutritive composition of seeds were observed. Pesticide treated soil had significant effects on leaf growth components such as leaf area ratio, leaf area index, spe...

Journal: :Sains akuakultur tropis 2022

Ikan nila merah (Oreochromis sp.) merupakan salah satu komoditas ikan air tawar yang memiliki prospek baik untuk dikembangkan. Dalam pengembangan budidaya masih suatu kendala yaitu efisiensi pemanfaan pakan rendah. Hal tersebut dapat diatasi dengan cara penambahan fermentasi tepung daun kangkung beperan dalam sintesis protein mampu meningkatkan pertumbuhan pada merah. Penelitian ini bertujuan m...

2005
Gerhard Zotz

Since the response to differences in resource availability is most pronounced in smaller individuals of vascular epiphytes such as Werauhia sanguinolenta Cogn. et Marchal (Bromeliaceae), I expected variation in growth and survival of small individuals to play an important role in the dynamics of entire populations. Four annual censuses (2002–2005) of three study populations, which were located ...

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