Alleviating Effect of Salicylic Acid Pre-treatment on Soil Moisture Stress of Waxy Corn

Land information is important for the international agricultural companies. This study investigated the agriculture and soil information in Sri Lanka. This study is the results from investigation of soil properties and agricultural properties determined by the Soil Taxonomy classification system for the soils in Sri Lanka. The order of the main agricultural imports in Sri Lanka was wheat > refined Sugar > dry Onion > Rice > Lentils. The climate of Sri Lanka is divided into three climatic zones. There are a wet zone, an intermediate zone, and a dry zone. Rainfall of the wet zone was 3,000-5,000mm year -1. The rainfall of the dry zone was less than 1,000m

The Study on Soil Classification in Sri Lanka

Hyun¹,

Mapa²,

Sonn³

et al. 2015

Assessment of N₂O Emission Factor of Autumn Chinese Cabbage Fields at Three Different Geographical Location in South Korea

Kim¹,

Park²,

Jeong³

et al. 2015

The level of nitrous oxide (N 2 O), a long-lived greenhouse gas, in atmosphere has increased mainly due to anthropogenic sources, especially application of nitrogen fertilizers. Quantifying N 2 O emission in the agricultural field is essential to develop national inventories of greenhouse gases (GHGs) emission. The objective of this study was to develop an emission factor to estimate the direct N 2 O emission from an agricultural field cultivated with the Chinese cabbage during autumn season in 2010-2012. Emission factor of N 2 O calculated over three years experiment using accumulated N 2 O emission, nitrogen fertilization rate, and background N 2 O emission was 0.0058±0.00254 kg N 2 O-N kg -1 N. More extensive studies need to be conducted to develop N 2 O emission factors for other upland crops in the various regions of Korea because N 2 O emission is influenced by many factors including climate characteristics, soil properties, and agricultural practices as well as crop species.Key words: N 2 O emission factor, nitrous oxide emission, Chinese cabbage (autumn season)Relationships between the averaged N2O emissions and nitrogen fertilizer application rates during chinese cabbage (autumn season) cultivation in upland soil from

Changes of Chemical Properties and Correlation under No-tillage Silt Loam Soil with Ridge Cultivation of Plastics Film Greenhouse Condition

Yang¹,

Shin²,

Kim³

et al. 2015

Changes of pH and electronic conductivity (EC) by tillage and no-tillage methods in plastics film house. Each point is mean of three replication and shows standard deviation. This study was carried out to investigate the sustainable agriculture of no-tillage technique to minimize tillage problems under rain interception green house condition including recycling of the ridge and the furrow for following cultivation in Korea. Chemical properties in soils were investigated at 3-years after cultivation at conventional tillage [CT; 2-years no-tillage (2009)(2010) and 1-year (2011) tillage] and no-tillage [NT; 2009 field. Soil pH maintained between 5.8 and 6.0 irrespectively tillage and no-tillage. Salinity (EC), contents of total nitrogen (TN), cation exchange capacity (CEC), and exchangeable cations (K, Ca and Mg) in soil were remarkably higher in CT than in NT treatment. Salinity (EC), contents of OM, TN, CEC, and exchangeable cations in top soil and subsoil indicated higher deviation in CT than NT treatment. Organic matters and inorganic matters in soil were positive (+) correlation. Suppression of pepper growth and increase of yield were observed in no-tillage soil compared with tillage soil. These results indicated that no-tillage technique in crop culture could play an important role with respect to chemical properties in silt loam soil. Changes of Chemical Properties and