Nitrogen, a macro and primary nutrient element is limiting nutrient in most of the soil. Its proper management requires the knowledge of several factors which reduces its availability in soil. In Nepal Urea is the main source of fertilizer used to supply N to the crop. Urea contains 46 percent of N, and it is present in amide form. Chemically it is in organic form because of its carbon content (NH2 CO NH2), but it is considered inorganic or chemical fertilizer because it is not derived from organs. Read More
What are GM foods??
GMO implies for genetically modified organisms. Foods produced from GM crops are GM foods. GM crops are those in which their natural genetic constitution has been altered by insertion of foreign DNA segment (gene) by genetic engineering technique. Genetic manipulation can also be done by using traditional breeding methods using selection and hybridization, but in GM crops genes are inserted into the crop genotypes generally from unrelated species to acquire desired characteristics. Read More
Tuta absoluta is a species of moth in family Gelechiidae known by the common names tomato leafminer and South American tomato moth. This pest has been classified as the most serious threat for tomato production worldwide. The pest has spread from South America to several parts of Europe, entire Africa and has now spread to Nepal and India.
Feeding the ever increasing population is not an easy task as we commonly think. Population growth, urbanization, loss of fertile lands, desertification, climate change etc are continuously forcing towards poor agricultural production and food insecurity. Agriculture is an important sector of Nepal with the majority of the rural population depending on it. Its importance in Nepal can be noted from 35 percent of its contribution in GDP and 65 percent of population dependent upon it. The sector faces major challenges of enhancing production in a situation of dwindling natural resources necessary for production. The growing demand for agricultural products, however, also offers opportunities for producers to sustain and improve their livelihoods. The agricultural sector is confronted with the major challenge of increasing production to feed a growing and increasingly prosperous population in a situation of decreasing availability of natural resources. New approaches and technical innovations are required to cope with these challenges and to enhance the livelihoods of the rural population. Read More
Recently GMO is a very popular topic world wise, for discussion. GMO means Genetically Modified Organisms. Genetically modified organisms can be defined as those organisms whose genetic material has been altered to express one or more of the desired characteristics. GMO are produced using scientific methods like Recombinant DNA technology and reproductive cloning. The first animal produced by this cloning technique was Dolly (sheep) in 1996. Read More
Food security can be defined with many definitions but the core concept is same. It can be defined as “Secure, adequate and suitable supply of food for everyone.” While United Nations Food Summit 1996 defined it as, Food security exists when all people, at all times have physical or economic access to sufficient, safe and nutritious food to meet their dietary needs and food preferences for an active and healthy life. Food security exists only when there is balance on all the four pillars of it. Food availability, food accessibility situation, food utilization/distribution and stability are considered as the four pillars of food security. Food availability is the first and utmost pillar of food security. Read More
Concept of sustainable development was developed earlier by many sociologist and concern scholar. After release of book ‘Silent Spring’ in 1962 by Rachel Carson, scientist started thinking about human being and animal health hazard. However, use of term sustainable development was started in World Conservation Strategy released by International Union for Conservation of Nature. World Commission for Environment and Development (WCED) in Brundtland Report (Our common Future) weaves together social, economic, cultural and environmental issues and global solutions which popularize the term sustainable development. Read More