the introduction of canola (oilseed rape; brassica napus l.) as a new source of vegetable oil production in iran prompts evaluation of the performance of this crop under different tillage systems. a field experiment was conducted to determine the impact of depth and intensity of tillage on soil physical properties, crop establishment and yield of irrigated winter canola in a loam soil (typic ha...

Soil surface roughness, as investigated in this study, is decomposed in a dual scale process. Therefore, we investigated photogrammetrically acquired roughness information over different agricultural fields in the size of 6–22 m and decomposed them into a dual scale process by using geostatistical techniques. For the characterization of soil surface roughness, we calculated two different roughn...

the aim of this study was to investigate the effect of tillage methods to obtain suitable seedbed for monogerm seed. therefore, a split plot experiment based on a randomized complete block design (rcbd) with three replicatians was conducted at darab station of fars province. the main plot was seedbed prepration at two levels including fall and spring season. subplot included 1) moldboard plow a...

Ağaçlandırma çalışmalarının başarısında fidan kalitelisi oldukça önemlidir. Fidan kalitesi üzerinde etkili olan etmenlerden biri ise ekim yastıklarında sıklığın düzenlenmesidir. Bu çalışma, yetiştirme sıklığının Toros sediri fidanlarının dikim başarısına etkisini ortaya koymak amacıyla yapılmıştır. Araştırmada, Isparta-Kapıdağ orijinli tohumlar, Eskişehir Orman Fidanlığında 15 cm aralıklarla ol...

The most distinctive Australian contribution to institutional design is the construction of electoral systems. Before Federation, remote colonies were an ideal seedbed for radical ideas on representation. Those ideas appealed to a microcosmic concept of representation. Since Federation, politicians have mostly stressed the rival (and partly incompatible) principal-agent concept of representatio...