In order to examine the effect of the quantity of Nitrogen fertilizer and bush density on vegetative and productive function of henna medicinal plant (Lawsonia inermis)  factorial experimentation in the form of block plan was carried in three stages in agriculture research center in south of kerman  province in corp of 2012. The first factor containing Nitrogen fertilizer in 4 levels i...

Trichoderma bio-fertilizer is widely used to improve soil fertility and carbon (C) sequestration, but the mechanism for increasing C accumulation remains unclear. In this study, effects of on mineralization aggregate-associated organic were investigated in a field experiment with five treatments (bio-fertilizer substitute 0 (CF), 10% (BF10), 20% (BF20), 30% (BF30) 50% (BF50) chemical fertilizer...

A large amount of nitrogen fertilizer is applied in maize planting Northeast China, but the recovery rate low, causing a series water and soil environmental problems farmland areas. Thus, based on isotope tracing technology combining field plot test with an situ microzone test, we carried out experiment under reduced conditions. Five different application levels were set: conventional (N1: 250 ...

years. Fertilizing once in the spring with a complete fertilizer with Uramite as the nitrogen source was satisfactory. On Lakeland soil Valencia and Hamlin orange tree growth was very good when about 1, 2, and 4 pounds of 8-2-8 inorganic fertilizer was applied in the first, second, and third seasons, respectively. Timing of applications of fertilizer also was not critical for young Valencia or ...

In order to examine the effect of the quantity of Nitrogen fertilizer and bush density on vegetative and productive function of henna medicinal plant (Lawsonia inermis)  factorial experimentation in the form of block plan was carried in three stages in agriculture research center in south of kerman  province in corp of 2012. The first factor containing Nitrogen fertilizer in 4 levels i...

this research has been done for studying the effect of split application of nitrogen fertilizer on growth indexes and yield of three hybrids of grain corn in shahrood. a split plot experiment based on randomized complete block design with four replications was carried out in 2007. three hybrids of corn (double cross 370, single cross 447, single cross 499) were placed in main plots and split ap...

in order to study the effect of n fertilizer rates on morphological traits, yield and yield components of rice cultivars, a study was carried out in rice research institute of rasht, iran during 2009. it was a two-variable factorial experiment based on a randomized complete block design with three replications. the first factor was nitrogen fertilization at four rates of 0, 30, 60 and 90 kg n h...

A field micro-plot experiment using nitrogen isotope (15N) labeling was conducted to determine the effects of placement methods (broadcast and band) and N rates (60, 150 and 240 kg ha-1) on the fate of urea-15N in the wheat-soil system in Guangde County of Anhui Province, China. N fertilizer applied in bands increased grain yield by 15% compared with broadcast application. The N fertilizer appl...

introduction: broadcast fertilization method increases fertilizer losses while results in lower nutrient absorption by plant roots. fertigation is an effective method to increase water and fertilizer efficiency and to reduce the losses of nitrogen. moreover, it allows farmers to apply the nutrients in splits and few amounts in response to crop needs. in the present study, a field experiment was...

Introduction The cost of nitrogen fertilizer increased dramatically in 2008 compared to previous years. As a result, producers began looking for ways to increase their nitrogen use efficiency. One product being promoted was an Exactrix system that injects anhydrous ammonia (NH3) as a liquid. The manufacturer of the Exactrix system claimed that nitrogen (N) rates could be reduced by as much as 3...