to study the effect of urea application in safflower (carthamus tinctorius) and determination of effective traits on its yield, a factorial experiment based on randomized complete block design in three replications was conducted in tabriz, iran, during 2012. studied factors were urea rate levels as 100, 150 and 200 kg/ha and urea application times 100% in sowing time, 50% sowing time + 50% stem...

to evaluate the effects of on-farm seed priming treatments and sowing dates on rate and percentage of seedling emergence, biological yield and some physiological indices of corn hybrid (sc. 260) an experiment was conducted in hamedan, iran in 2010. a split plot in a randomized complete block design with three replications was conducted. main plots include three sowing dates (early, on-time and ...

Native plants are an important part of New Zealand’s uniqueness, and there is increasing awareness of the need to maintain these species in managed landscapes, particularly pastoral areas, in addition to the country’s conservation lands. The most widely used method of establishing native plants is transplanting nursery-grown seedlings, and for many species, much experience and knowledge has bee...

sowing and harvesting date are the most important agronomic factors that we should pay attention to proper date selection for sowing date in order to achieve good crop establishment and to harvest date in order to achieve the best time for crop quantities and qualities ripening. farmers intend to germinate sugar beet seed at minimum environmental temperature. sowing date affects crop canopy dev...

Wild mustard (Sinapis arvensis L.) and milk thistle (Silybum marianum (L.) Gaertn.) are two competitive broad-leaved weeds commonly found in cereals Europe, while several weed species have developed resistance to the main herbicides that applied on these crops. Thus, implementation of integrated management (IWM) programs is great importance. Field experiments were conducted based a split-plot d...

Phosphorus (P) is the second most important crop nutrient after nitrogen that increases productivity and profitability of maize (Zea mays L.) on P deficient soils in Northwest Pakistan. The objective of this study was to find the best level and time of P application for higher maize (cv. Azam) productivity and profitability. Field experiment was conducted at the Research Farm of Khyber Pakhtunk...

List of papers This thesis is based on the following papers, which will be referred to in the text by their Roman numerals. Effects of intensified management of hay-meadows on population dynamics of Succisa pratensis. Manuscript. Intensified management affects population growth differently in the two perennial herbs Hypochoeris maculata and Polygala amarella. Manuscript. Artificial dispersal as...