By B. Chandrasekaran; K. Annadurai; E.Somasundaram
Read Online or Download A Textbook of Agronomy PDF
Best agricultural sciences books
Fresh ,EXCELENT AND trustworthy provider!
The luck of the ebook Soils and the surroundings mind's eye within the purposes of soil surveys, illustrates the necessity for extra, extra special towards the tip of bettering productiveness and knowledge approximately soil survey interpretations (uses potency within the use of soils and the surroundings. of soil surveys), specifically for laypersons, academics, even if laypersons, academics, and scholars are the and scholars.
This booklet provides leading edge innovations for characterising, quantifying and modelling geomaterial variability as well as tools for quantifying the impact of this variability at the functionality of geotechnical constructions. It contains state of the art refereed magazine papers through prime foreign researchers besides written and casual discussions on a variety of key submissions that have been provided at a Symposium on the establishment of Civil Engineers on ninth may possibly 2005
Extra resources for A Textbook of Agronomy
AN INTRODUCTION TO AGRICULTURE AND AGRONOMY 9 fodder for livestock. 5 per cent of the global calorie production. Demand for food is growing with ever increasing world population. D. While demand for wheat and rice may be increased in the next two decades by 31 and 53 per cent, respectively, the demand for coarse grains may double. 8 per cent per annum. 3 per cent per annum due to high population growth rate. The FAO estimates clearly indicate the increasing shortage of cereals in 90 developing countries.
Neo Malthusians have proposed birth control as answer to the problem. 15. T. ” 16. A. Mitsherlich (1909) proposed a theory of “Law of diminishing returns” states that, ‘The increase in any crop produce by a unit increment of a deficient factor is proportional to the decrement of that factor from the maximum and the response is curvilinear instead of linear’. Mitscherlich equation is dy/dx = C (A-Y) where, d – increment or change dy – amount of increase in yield dx – amount of increment of the growth factor x.
6 AN INTRODUCTION TO AGRONOMY The word agronomy has been derived from the two Greek words, agros and nomos having the meaning of field and to manage, respectively. Literally, agronomy means the “art of managing field”. Technically, it means the “science and economics of crop production by management of farm land”. Definition : Agronomy is the art and underlying science in production and improvement of field crops with the efficient use of soil fertility, water, labourer and other factors related to crop production.
A Textbook of Agronomy by B. Chandrasekaran; K. Annadurai; E.Somasundaram