The essential oil of Rosa damascena Mill. is one of the most valuable and important base material in the flavor and fragrance industry. The aim of this study was to determine the effects of different rates of cow manure on the essential oil of the rose petals. For this a field experiment was conducted on a clay loam soil at the research farm of Alborz research station, Karaj, Iran. Experimental...

to study the potential of production of biogas, utilizing the wastes of rose distillation process, the wastes were mixed with cow manure at manure proportions of 5, 10, 15 and 20% and in temperatures at two levels of 35 and 45 °c. the treatments were carried out using a 2×4 factorial design (?=0.05). the volumes of produced gas and generated methane were recorded daily and modeled as functions ...

a field study was conducted in qaen region using complete randomized blocks with three replications to study the effect of organic manure, zinc and boron on yield and yield components of millet and grain chemical composition. the treatments included factorial arrangement of municipal solid waste compost and cow manure (each at 25 ton ha-1), zn (0, 50 kg ha-1) and b (0, 10 kg ha-1) by using thei...

Excessive consumption of nitrogen (N) to enhance production, which may lead to environmental pollution. While sustainable production is threatened due to low soil fertility and organic matter. This study was carried out as a factorial experiment in the randomized complete block design and three replications at the research field of the University of Jiroft in 2018-2019. The present study invest...

Biofertilizers are compounds that contain microorganisms capable of increasing the nutrient availability to plants and plant growth rate. The purpose this research is study effects biofertilizers organic ameliorants on some soil bio-chemical properties. pot experiment was conducted at field Faculty Agriculture, Universitas Padjadjaran Indonesia. in a randomized block complete design format cons...

in order to develop the high intensive agriculture, more chemical fertilizers are applied to the soil that resulting in soil degradation and environment deterioration. application of organic manure is an important approach for maintaining and improving the soil fertility and increasing fertilizer use efficiency. therefore, in order to evaluate the effect of organic manures and chemical fertiliz...

abstract efficient use and management of organic matter are important aspects of sustainable agricultural. organic matter is relatively low in majority of soils in iran, and continuous use of n fertilizer would create environmental hazards. therefore, the combined use of n fertilizer and organic wastes is an effective strategy. the purpose of this study was investigating of residual effects of ...

the aim of this study was to evaluate the effect of bio-fertilizers on growth and development of plants in pots containing (v) vermicompost and (m) cow manure: (soil amendments) and (s) garden soil separately and in combination. in the first experiment, treatments included s (control), sm (soil + 15%m + 0%v), smv10 (soil + 15%m + 10%v), and smv20 (soil + 15%m + 20%v) by dry weight (w/w). in the...