نتایج جستجو برای: inappropriate planting depth

تعداد نتایج: 202419  

Journal: :Journal of economic entomology 2014
Ishakh Pulakkatu-Thodi Donald Shurley Michael D Toews

Phytophagous stink bugs are economically important pests of annual and perennial crops in the southeastern United States. Because of insecticide resistance and risk of secondary pest outbreaks, there is interest in identifying cultural practices that could lead to reduced insecticide applications. The objective of this project was to assess the importance of cotton planting date on stink bug da...

2006
John R. Seifert Douglass F. Jacobs Marcus F. Selig

Most afforestation hardwood plantations in the Central Hardwood Forest Region, USA, are established with bareroot seedlings planted in late winter or early spring. This brief planting season is preferred for several logistical and physiological reasons, yet interest in fall planting has increased as a means to extend the planting season. We evaluated effects of a wide range of planting dates on...

2013
Koen Deconinck Johan Swinnen

Almost half of the world’s vineyards are in the EU and the EU produces around 60% of the world’s wine. The EU is also the world’s most regulated wine market. In 2007, the European Union decided on a major reform of its wine policy, the so-called Common Market Organization (CMO) for wine. A crucial element was the abolishment of a system of planting rights to regulate planting of vineyards in th...

2005
Roderick M. Rejesus Ashley C. Lovell Bertis B. Little Mike H. Cross

This study examines the factors that determine the likelihood of submitting a potentially fraudulent prevented planting claim. A theoretical model is developed and the theoretical predictions are empirically verified by utilizing a binary choice model and crop insurance data from the southern United States. The empirical results show that insured producers with higher prevented planting coverag...

2011
Luz Claudio

Poor indoor air quality has been linked to health problems, especially in children. Asthma has reached epidemic proportions among multiple age groups and is considered the most common chronic disease in urban-dwelling children. The American Academy of Allergy, Asthma and Immunology Indoor Allergen Committee suggested in a 2010 report that allergists consider indoor air filtration to be part of ...

2007
Todd Browne

Serr variety to which all rootstocks were (!.raftedhas grown and produced on all rootstock selections although some have grown faster and produce more than others. Northern California Black Walnut (Juglans hindsii) and ~. major grow to moderate size and have good production potential. The paradox seedling, paradox cutting and Royal seedling grow to large size and have a good production potentia...

2017
Tanzeelur Rahman Xin Liu Sajad Hussain Shoaib Ahmed Guopeng Chen Feng Yang Lilian Chen Junbo Du Weiguo Liu Wenyu Yang

Optimum planting geometries have been shown to increase crop yields in maize-soybean intercrop systems. However, little is known about whether changes in planting geometry improve the seasonal water use of maize and soybean intercrops. We conducted two different field experiments in 2013 and 2014 to investigate the effects of changes in planting geometry on water use efficiency (WUE) and evapot...

پایان نامه :دانشگاه تربیت معلم - تبریز - دانشکده علوم پایه 1391

عنوان پایان نامه:بررسی عمق توانهای ایده آل یالی یک درخت فرض کنیدg یک گراف با n رأس و i(g) ایده آل یالی آن از حلقه چند جمله ایها،r=k[x1,x2,…,xn]،روی میدانk با nمتغیر باشد. فرض کنید i ایده آل یالی یک درخت یا جنگل باشد. در این پایان نامه کرانهای پایینی برای دنباله {depth rit}t?1 بدست می آوریم و نشان می دهیم این کرانهای پایین، نقطه ایستایی دنباله 1? {depth rit}tاست هرگاه g یک درخت باشد.

Selecting the appropriate rangeland improvement method is a challenging task for range managers because it requires consideration of  various criteria. This study was  aimed to evaluate various restoration and reclamation practices in the rangelands of Semirom-Isfahan using Multi-Criteria Decision Making (MCDM) methods. Grazing management, water point development, pit seeding, exclosure, water ...

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