AIMS The recent increases in food prices caused by the corresponding increases in fertilizer costs have highlighted the demand for reducing the overuse of fertilizers in industrial agriculture. There has been increasing interest in developing plant root-targeted delivery (RTD) of fertilizers in order to address the problem of inefficient fertilizer use. The aim of this study is to develop a low...

In order to investigate the possibility of using organic fertilizers in tobacco floating nursery, an experiment was conducted at tobacco research institute of Urmia in 2010. The experiment was done as factorial trail based on randomized complete block design (CRBD) with four replications. The levels of first factor were disinfected poultry manure, disinfected pigeon manure, a complete fertilize...

Fertilizer management is essential for achieving sustainable agriculture and protecting the environment. To evaluate the effect of Nitroxin bio-fertilizer application on quantitative and qualitative traits of corn hybrids a farm research was arranged via split plot experiment based on the randomized complete block design with four replications in 2013. Main plots were Included: use of the chemi...

organic fertilizers such as vermicompost (vc) are an undeniable source of required nutrients of plants. this field experiment performed as split plot arrangement based a randomized complete block design with three replications in 2008. the main factors (vermicompost treatments) added to soil at six levels including 20 and 40 ton.ha-1, 20 and 40 ton.ha-1 plus (1/2) chemical fertilizer, chemical ...

Fertilized black soil samples are prepared by mixing desired amounts of fertilizers in the black soils having 10% gravimetric moisture content. Two black soil samples were collected from two different locations of Maharashtra State (India). Three different chemical fertilizers viz., Urea, Di-Ammonium Phosphate and Potash are used. Measurements of complex dielectric constants of these soil sampl...

in order to study the effects of simultaneous application of znso4 and biological fertilizer, azotobacter chroococcum and azospirillum brasilense, on grain yield and nitrogen uptake efficiency in rapeseed (brassica napus l.), cv. hyola308, a field experiment was conducted as split plot factorial based on randomized complete block design at research field of faculty of agricultural sciences, uni...

1 Why don’t farmers use fertilizers: 2 Evidence from Field Experiments in Western Kenya 3 (PRELIMINARY AND INCOMPLETE) 4 April 29, 2006 5 6 Esther Duflo, Michael Kremer and Jonathan Robinson 7 8 9 Abstract 10 11 This paper reports on randomized field experiments set up to investigate 12 various reasons for the low usage of fertilizer in Western Kenya. 13 Demonstration plots set up on farmer’s f...