Aiming at the poor efficiency in crushing a handful of caking organic fertilizers spraying from traditional disc spreader, an improved spreader equipped with spike-tooth unit was designed introduction its structural composition and working principle. Also simulation experiments were carried out based on discrete element method according to solutions made before after improvement. Firstly, granu...

In order to investigate effect of application of Nitroxin and nitrogen chemical fertilizer on yield and yield components, split plot experiment on the basis of Randomized Complete Block Design with four replications was conducted. Four levels of Nitrogen fertilizer (N1: 100% chemical fertilizer, N2: 75% chemical fertilizer + 100% biological fertilizer, N3: 50% chemical fertilizer + 100% biologi...

in order to investigate effect of application of nitroxin and nitrogen chemical fertilizer on yield and yield components, split plot experiment on the basis of randomized complete block design with four replications was conducted. four levels of nitrogen fertilizer (n1: 100% chemical fertilizer, n2: 75% chemical fertilizer + 100% biological fertilizer, n3: 50% chemical fertilizer + 100% biologi...

abstract to evaluate the effect of different sources of p fertilizer on grain yield and yield components of two barely varieties, this experiment was conducted in research farm, college of agriculture, university of tehran in 2010. the experimental treatments were arranged as factorial based on randomized complete block design with three replications. the treatments consisted of two barely vari...

It is known that the use of granular forms fertilizers a universal solution for plant growing enterprises using organic, mineral, organomineral in their activities. For crop farming enterprises, application most convenient way to enrich soil with nutrients. surface main and top dressing, spreaders different designs are used, distributing continuous layer indicators uniformity. At present, devel...

Due to the continuous creation of organic granular fertilizers new composition, there is a lack knowledge about their properties and influence norm on spreading efficiency. To increase efficiency use fertilizers, aims are properly choose most rational parameters fertilizer norms, considering characteristics fertilizer. determine this quickly with lower costs, various theoretical models computer...

This research set out to evaluate the effect of combined biological and chemical nitrogen fertilizers on some corn hybrids. To this end an experiment was conducted as split plot on the basis of randomized complete block design with four replications. Main plots were included: use of chemical and biological fertilizers in four levels: 100% chemical fertilizer, 75% chemical fertilizer + 100% bio-...