نتایج جستجو برای: weed control equipment

تعداد نتایج: 1399002  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...

2013
Manuel Pérez-Ruiz Jacob Carballido Juan Agüera Antonio Rodríguez-Lizana

Typically, low-pressure sprayers are used to uniformly apply pre- and post-emergent herbicides to control weeds in crop rows. An innovative machine for weed control in inter-row and intra-row areas, with a unique combination of inter-row cultivation tooling and intra-row band spraying for six rows and an electro-hydraulic side-shift frame controlled by a GPS system, was developed and evaluated....

2015

In this study which has been conducted in Akçasu Forest Range District of Devrek Forest Directorate; 3 methods (weed control with labourer power, cover removal with Hitachi F20 Excavator, and weed control with agricultural equipment mounted on a Ferguson 240S agriculture tractor) were utilized in weed control efforts in regeneration of degraded oriental beech forests have been compared. In this...

Journal: :Proceedings of the New Zealand Weed Control Conference 1958

1998
Hector Valenzuela Joe DeFrank

INTRODUCTION The primary limitations of conventional weed control programs include a heavy reliance on capital intensive, toxic, and non-renewable resources (pesticides and petrochemicals) to manage weed competition. Weed emergence from the soil top layers is facilitated by the continuous disturbance created through cultivation, irrigation, pesticide applications, machinery, and other cultural ...

2006
B. Eker E. Yuksel

Corrosion is the deterioration of materials by chemical interaction with their environment. The consequences of corrosion are many and varied. The effects of these on the safe, reliable and efficient operation of equipment or structures are often more serious than the simple loss of a mass of metal. The two main reasons for replacing machinery or equipment include upgrading old equipment and su...

2007
Charles L. Webber James W. Shrefler

Producers of organic vegetables often report that weeds are their most troublesome production problem. Corn gluten meal (CGM), a by-product of the wet-milling process Qf corn, is phytotoxic. As a preemergence or preplant-incorporated herbicide, CGM inhibits root development, decreases shoot length, and reduces plant survival of weed or crop seedlings. The development of a mechanized application...

ژورنال: علوم آب و خاک 2000
اقتداری نایینی, عبدالرضا , غدیری, حسین ,

In order to find the critical period of weed control, the best time of weed control beginning (i.e. herbicide application time), and the length of weed control period (i.e. herbicide persistency) in corn, field experiments were conducted in Bajgah and Kooshkak in Fars Province in 1995 using a randomized complete block design with 14 treatments and four replications. Treatments consisted of diff...

اقتداری نایینی, عبدالرضا , غدیری, حسین ,

In order to find the critical period of weed control, the best time of weed control beginning (i.e. herbicide application time), and the length of weed control period (i.e. herbicide persistency) in corn, field experiments were conducted in Bajgah and Kooshkak in Fars Province in 1995 using a randomized complete block design with 14 treatments and four replications. Treatments consisted of diff...

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