technology in agriculture

Organic matter is considered the most valuable asset for the agricultural soil with regard to its use in crop production and landscaping. Here is a brief list of benefits from the presence of different sources of organic matter in the soil; Benefits of Soil Organic Matter (Article cover) 1. Darker soils warm up faster in spring season. (Darker color of the soil is due to presence of humus and other types of organic matter.) 2. Dead organisms (plants and animals) in the soils are converted to mineral and humus by the action of living organisms (bacteria and fungi). 3. Decomposition of the organic matter in the soil provides a source of slow release fertilizer. 4. Dead organic matter is the source of food for soil microbes and increases their activity. 5. Aeration in the soil is improved by the presences of recognizable dead organic matter; it also opens up the soil physically. 6. Fine unrecognizable organic matter has good effect on the water holding capacity of the soil. 7. Humus in ...

The organic matter contents of a good mineral soil are 2-5% which consists of organic matter in the form of living and dead organic matter. Living organic matter consists of soil microorganisms (fungi, bacteria, nematodes and earthworms), plant roots and insects.  Dead organic matter is added after the death of these living organisms and addition of leaves, bark of trees and dead animals.  Farmyard manure, composts and mushroom compost are also source of dead organic matter. All of this organic matter is ultimately broken down into carbon dioxide, water and minerals. Humus is the collection of organic compounds that persists in soil for longer duration. Soil section from a grass field LIVING ORGANISMS IN THE SOIL Living organisms in the soil ecosystem for food webs and food chains.  1. The source of converting sunlight and simpler compounds into organic compounds are the Producers , which are involved in photosynthesis (green plants mostly in agricultural soils). Next are...

Soil science  is a scientific discipline concerning the study of soil as a natural resource from the point of view of plant growth. What is Soil? From agricultural point of view, soil is defined as the non-consolidated upper part of the earth's crust that serves as a natural medium for the growth of land plants. In short, soil is a habitat for plants.  But for different disciplines of science, the definition of soil is different, for instance, a geologist or mining engineer may call " the fragmented rocks or debris covering the rocks� and a civil engineer may call it " earth or the foundation material for constructing houses and roads �; and an economist may call it as ' land' . In this article, we will be limiting only to the definition and branches of soil science.   Relation of soil science with other scientific disciplines  Soil science is an applied scientific discipline of comprehensive nature because of its relationships with so many other sciences. ...

INTRODUCTION This article will discuss about the harmful effects of pesticides (especially insecticides) use on human health. The pesticides applied to crops, household etc. are not only mitigating pest problem but they are also a source of extreme and permanent damage to human health and environment.  Pesticides  are substances or mixture of substances intended for preventing, destroying, repelling or mitigating any pest. They include;  Insecticides - kill insects Fungicides - used to kill fungi Biocides - used to kill microbes Herbicides - used to kill herbs and weeds Rodenticides - used against rodents e.g., rats. Pediculicide [against lice ( Pediculus humanus )]  Fumigants etc. ECONOMIC IMPORTANCE Used in agriculture, industry, household and medicine.  A major factor for rise in Agriculture productivity in 20th century.  Nearly all insecticides have the potential to significantly alter ecosystems;  Many are toxic to humans; others are concentrated ...