a two year field experiment was carried out to evaluate the competitive effects of wild mustard densities growing with rapeseed (cultivar talaye) under different nitrogen rates. treatments were wild mustard densities (0, 10, 20, 30, and 40 plant m-2) and nitrogen (n) rates (0, 50, 100, 150, and 200 kg n ha-1). the factorial set of treatments was arranged into a randomized complete block design ...

Penelitian ini dilaksanakan untuk melihat dan mengetahui respon pemberian dosis pupuk organic cair limbah tahu nitrogen terhadap produksi sawi hijau (Brassica chinensis var. parachinensis). Dengan menggunakan Rancangan Acak Kelompok yang terdiri dari dua factor pelakuan. Sebagi faktor pertama adalah organik dengan empat taraf yaitu L0 : Kontrol, L1 7.5 ml/polybag/, L2 15 ml/polybag. Faktor kedu...

Elevated nitrogen (N) deposition to tropical forests may accelerate ecosystem phosphorus (P) limitation. This study examined responses of fine root biomass, nutrient concentrations, and acid phosphatase activity (APA) of bulk soil to five years of N and P additions in one old-growth and two younger lowland tropical forests in southern China. The old-growth forest had higher N capital than the t...

Purpose: The aimed witch of this study was to evaluate the chemical changes in soil cultivated with Panicum maximum cv. Mombaça grass, when submitted application different doses dairy effluent (ARL), sodium as a limiting factor.
 
 Method/design/approach: Was applied ARL an area grass order provide at concentrations 75, 150, 300 and 600 Kg ha-1. Soil samples were collected depths time...

ABSTRACT: The use of nitrogen (N) in pastoral ecosystems leads to increased productivity, as it allows the plant elongate its leaves and, therefore, grazing herbivores harvest green leaves. However, there are very volatile N sources, which can be replaced by ammonium nitrate, is less and dependent on application rainy days. treatments compound Marandu palisade grass pastures managed under conti...

the saffron understanding the factors that increased the quality and quantity of product in order to achieve optimum performance it is important, in this regard, the use of fertilizers and different densities corm are the most important factor. in this regard, an experiment in 1394 to factorial design in a randomized complete block design with three replications in the village davoodabad locate...

to survey the effects of chemical and biological phosphorus on the yield and essential oil of satureja hortensis l. as an important medicinal plant, factorial experiment was conducted based on randomized complete block design with three replicates at research station of faculty of agriculture, urmia university in 2011. the treatments were chemical phosphorus fertilizer with four levels (0, 50, ...

The effect of integrated use of mineral and organic N sources (farmyard manure, poultry manure, and Filter Cake) on yield and N uptake of wheat were assessed in biennial field experiment carried out on silty clay loam soil in Nuclear Institute for Food and Agriculture, Tarnab, Peshawar Pakistan during 2005-07. Combined dose of N provided from all sources was applied @120 kg ha-1. There were 17 ...