Effects of plant residues on nitrogen supply in arable lands
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2015, Vol 9, Issue 6
Abstract
To evaluate the mineralization of organic nitrogen of plant materials (clover, maize and wheat) an experiment was conducted as a completely randomized design with three replications. Clover, maize and wheat residues were applied into the soil at the rates of 5, 25 and 2.5 tons/ha, respectively. The amount of organic nitrogen mineralization rate was calculated by kinetics first-order equations. The results showed that the highest and the lowest amount of nitrogen mineralization (Nmin) were belonged to maize residues (51 mg / kg of soil) and wheat straw (1.45 mg / kg of soil), respectively. Furthermore, the highest mineralization rate constant (K) was in clover and the lowest was in wheat straw. Nitrogen mineralization (Nmin) showed significant correlation with both mineralization potential (N0) and the index of nitrogen availability (N0K). The results indicated that the application of clover and maize residues and also wheat straw can add 78, 127 and 3.6 kg of mineral nitrogen to the soil during the growing season, respectively.
Authors and Affiliations
Saeed Samavat*| Soil & Water Research Institute, Karaj, Iran, email: agsama2000@gmail.com, Simin Samavat| Soil & Water Research Institute, Karaj, Iran
Keywords
Related Articles
- EP ID EP7013
- DOI -
- Views 353
- Downloads 17
Influence of solid-state fermentation on nutritive values and enzymatic activities of AnchovyKilka (Clupeonella engrauliformisSvetovidov, 1941)meal by using different microorganisms
The aim of this studywas to investigate the effect of solid-state fermentation on nutritional and enzymatic properties of Anchovy meal. Minced anchovy were mixed with25% wheat flour and inoculated with microorganisms (10...
Study of Relationship between Knowledge Management and Organizational Development Case Study: General Directorate of Youth and Sports of Mazandaran province
The purpose of this research was to study the relationship between knowledge management and organizational development from the perspective of sports and youth department staff. The analysis of Descriptive correlation me...
Life AndMountain MythIn Shahname (From Kiumars to Jamshid)
The mountainword is kaofa in ancient Iran and kof in Pahlavi. The mountains have enclosed Iran triangular and Iranian’s life start first inside of the mountains. The mountains have elevated position in myth of Shahname a...
Evaluation of mercury pollution in breast milk and Iranian infants’ hair
Breast milk is the main nutrition for the children of 4-6 months old. The mercury of mother’s body may be transferred to infant via milk. Mercury is a neural toxic metal and endangers the proper growth of infants. This p...
Impact of sowing date on growth and yield attributes of Pop Corn grown under different densities
The effect of different sowing dates (Jun 5th , Jun 20th, July 6th , July 21th) and densities rates of 60000, 70000, 80000 and 90000 plant/ha on growth and yield components of Popcorn (Zea mays everta Sturt.) was investi...