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Sources of inaccuracy when estimating economically optimum N fertilizer rates
Confidence Interval Economic Optimum N Rate Trials
2013/2/28
Nitrogen rate trials are often performed to determine the economically optimum N application rate. For this purpose, the yield is modeled as a function of the N application. The regression analysis pr...
Reduction Rates of Fuel Consumption by Gear Up and Throttle Down on an Agricultural Tractor
engine speed road traveling rotary tillage
2010/10/25
We investigated the effect of operating conditions such as travel gears, PTO gears and engine speed of a 24kW agricultural tractor on fuel consumption. In the indoor tests, we found that as the PTO po...
The effects of different distributor head types, air velocities and fertilizing rates on flow evenness for some fertilizers
Air velocity distributor head fertilizing rate flow evenness fertilizer
2011/1/12
In this study, three different types of distributor head (T, funnel and Y) were tested at three air velocities of 26, 31 and 36 ms-1, and three different fertilizing rates were selected as 12, 16 and ...
The effects of different distributor head types, air velocities and fertilizing rates on flow evenness for some fertilizers
Air velocity distributor head fertilizing rate flow evenness fertilizer
2011/1/12
In this study, three different types of distributor head (T, funnel and Y) were tested at three air velocities of 26, 31 and 36 ms-1, and three different fertilizing rates were selected as 12, 16 and ...
Efficacy of Certain Agrochemicals Application at Field Rates on Soil Fungi and Their Ultrastructures
Agrochemicals Fungal ultrastructural fungal community
2010/11/12
The efficiency of three different agrochemicals (fungicide, insecticide and fertilizer) and mixture of each fungicide and insecticide with the fertilizer was carried out to determine their effects on ...
EFFECT OF DIFFERENT RATES OF NITROGEN FERTILISERS ON CHEMICAL COMPOSITION OF STINGING NETTLE（Urtica dioica L）PLANTS HARVESTED AT THREE DEVELOPMENT STAGES PART II. CONTENTS OF MINERALS
stinging nettle chemical composition macroelements microelements
2009/3/30
The effect of various rates of nitrogen fertilisers on macro- (N-NO3, P, K, Mg, Ca) and microelement (Fe, Cu, Zn, Mn) contents in nettle plants harvested at three development stages was evaluated in 3...
EFFECT OF DIFFERENT RATES OF NITROGEN FERTILISERS ON CHEMICAL COMPOSITION OF STINGING NETTLE (Urtica dioica L.) PLANTS HARVESTED AT THREE DEVELOPMENT STAGES PART I. CONTENTS OF ORGANIC SUBSTANCES
stinging nettle chemical composition protein crude fibre
2009/3/30
A 3-year field study evaluated the effect of various rates of nitrogen fertilisers (0, 75, 150, 225 and 300 kg.ha-1 N) on total and true protein, as well as crude fiber contents in stinging nettle pla...
Effects of Seed Rates on Forage Production, Seed Yield and Hay Quality of Annual Legume-Barley Mixtures
Vetch-barley mixture grasspea-barley mixture forage quality
2009/1/13
The forage yield and quality of common vetch, grasspea and barley grown alone and as mixtures were investigated in field experiments conducted at the Faculty of Agriculture, Gaziosmanpaşa Univers...
A comparison of oxygen diffusion rates in sand moistened with water or peg 20000 solution
ODR PEG solutions water/sand/air mixtures
2008/11/26
Oxygen diffusion rates (ODR) were measured in water/sand/air and PEG solution/sand/air mixtures, spanning a range of liquid/solid/air volume ratios. Replacement of water with PEG solution as the liqu...
Comparison of daily evapotranspiration rates obtained from water balance model and modified Bowen`s ratio method
evapotranspiration modelling Bowen`s ratio method
2008/11/21
The processes of energy and water exchange between the earth surface and atmosphere have a very significant influence on the microclimatic conditions and consequently, on plant production. Evapotransp...
ANALYSING MORTALITY RATES AND DATA OF CHILDHOOD LEUKAEMIA BY TIME SERIES METHODS
time series analysis autoregressive integrated moving average models mortality rates seasonal decomposition time series method acute childhood lymphoid leukaemia
2010/3/24
The Hungarian mortality rates were analyzed by autoregressive integrated moving average
models and seasonal time series models examined the data of acute childhood lymphoid leukaemia. The mortality d...
TRANSITION IN AGRICULTURE – REVIEW ON SUBSIDY AND CUSTOM RATES EFFECTS IN APPLE PRODUCTION IN BOSNIA AND HERZEGOVINA
subsidies custom rates effects cost-benefi t analysis
2010/12/1
Speaking about transition in agriculture, we think on agriculture in transition countries, that is Central and Eastern European Countries. Such development is observed from the perspective of the Euro...