This publication provides readers with an introduction to applied agricultural science and agricultural systems. The subject area of agricultural productivity and green revolution is dealt. The environmental issues with agriculture are highlighted. Subject areas of agrophysics and agricultural diversification are covered. An overview of agricultural economics, engineering, marketing and technology is given. An overview of agronomy, agroecology, role of fertilizer, pesticide and biological pest control is given. The subject areas of biological engineering, aquaculture and biodynamic agriculture are covered. The relationships among biodynamic agriculture, genetic engineering and microbiology are analyzed. Focus lies on irrigation, water management, agriculture leaching, agrology, agricultural land and seed treatment. Contents: Introduction to Applied Agricultural Science and Agricultural Systems; Introductory Overview of Animal Science and Veterinary Medicine: Focus on Animal breeding and Nutrition; Agricultural Productivity and Green Revolution: Focus on Theoretical Production Ecology; Environmental Issues with Agriculture: Case Study of British Agricultural Revolution; Agricultural Philosophy, Agrophysics and Agricultural Diversification: Focus on Precision Agriculture; Agricultural Economics, Engineering and Marketing: An Overview; Agricultural Knowledge, Science and Technology: Focus on Agricultural Machinery; Agronomy and Agroecology: An Overview; Role of Fertilizer, Pesticide and Biological Pest Control: An Overview; Biological Engineering, Aquaculture and Biodynamic Agriculture; Biodynamic Agriculture, Genetic Engineering and Microbiology: Analyzing the Relationship; Focus on Food Science and Human Nutrition; Focus on Irrigation, Water Management and Agriculture Leaching; Soil Science, Agrology, Agricultural Land and Seed Treatment: An Overview; Insectary Plants, Sterile Insect Technique and Stratification: An Overview; Focus on Soil, Plant, Water and Atmosphere Continuum: Important Characteristics and Relationships.