Fertilizer is a material that provides essential elements can be added to the soil support plant growth. Fertilizers divided into two, namely organic fertilizers and inorganic fertilizers. The use of chemical from time has increased. Low fertility due compounds cause excessive pollution if used continuously become major problem in agricultural cultivation. In addition, other problems experience...

Biological N(2) fixation represents the major source of N input in agricultural soils including those in arid regions. The major N(2)-fixing systems are the symbiotic systems, which can play a significant role in improving the fertility and productivity of low-N soils. The Rhizobium-legume symbioses have received most attention and have been examined extensively. The behavior of some N(2)-fixin...

Rice (Oryza sativa L.) is the most important staple food crop in many developing countries, and is ranked third in Kenya after maize and wheat. Continuous cropping without replenishing soil nutrients is a major problem in Kenya resulting to declining soil fertility. The use of chemical fertilizers to avert the problem of low soil fertility is currently limited due to rising costs and environmen...

Background & Aim: Thymus daenensis is recognized as aromatic herbs,   which used in food, flavoring, pharmaceutical, and perfumery industries. This   study was conducted to investigate the response of T.daenensis to   different fertilizers (chemical and organic) along with chitosan.  Experimental:  Treatments consisted of different fertilizers...