Agriculture

Important subjects present in B.Sc. agriculture course.
Agronomy: Basics of Agronomy, Field Crops (Kharif), Field Crops (Rabi), Crop Production, Weed Management, Irrigation Techniques, Water resource management, Organic Farming, Sustainable agriculture. Apart from theoretical subjects, practical sessions are also involved, in case of these subjects.
Plant Genetics: Botany, Basics of Genetics, Plant Breeding, Seed Technology, Basics of Biotechnology. Apart from the above-mentioned theoretical subjects, practical sessions involving these subjects are also present.
Soil Science: Introduction to Soil Science, Soil Fertility, Soil Chemistry, Fertilizers, Agricultural Chemistry. Apart from the above mentioned theoretical subjects, practical sessions involving the subjects are also present.
Entomology: Pest Management, Beneficial Insects, Grain Storage and Management. Like the above entries, along with theoretical subjects, practical sessions involving them are also present.
Agricultural Economics: Market prices, Trade prices, Marketing, Finance, Agribusiness Management, Farm Management. Along with the theoretical subjects, practical sessions involving them are also present.
Agriculture Engineering: Agriculture Machinery, Power and Tools, Harvest Technology, Environment Science and Engineering, Renewable Energy. Along with the theoretical subjects, practical sessions involving them are also present.
Agricultural Meteorology: Climate patterns, Climatic hazards on Agriculture, Climatic Zones, Weather forecasting. Practical sessions related to the theoretical subjects are also present.
Plant Pathology: Crop Diseases, Nematology. Practical sessions related to the theoretical subjects are also present.
Horticulture: Fruit Crops, Medicinal Plants, Aromatic Plants, Flower Production, Spices and Plantation Crops. Practical sessions related to the theoretical subjects are also present.
Agricultural Extension: Dimensions of Agricultural Extension, Extension Methodologies and Entrepreneurship Development program. Practical sessions related to the theoretical subjects is also present.
Biochemistry
Physiology
Microbiology
Computer Education
English
Physical Education
Animal Products

Please refer to the link provided below for details regarding courses in agriculture (B.Sc. and M.Sc). These articles should help you decide which course you want to pursue and where your interests lie.
https://www.shiksha.com/science/articles/bsc-in-agriculture-course-career-scope-and-salary-prospects-blogId-14705
M.Sc. Agriculture:
It is a 2 years long Post Graduate Level program. The 2 years duration is divided into 4 semesters, with each semester lasting a period of 6 months. During each semester, students will have to face separate sets of theoretical subjects as well as practical sessions associated with those subjects. Apart from theoretical subjects and practical sessions, seminars and Research work/project also plays an important role in M.Sc. Agriculture program. Based on choice of subjects, students may specialize in disciplines within the sector of Agriculture Science.

How to Get Admission in Bachelor of Science [B.Sc] (Agriculture)
Admission in universities or institutes offering B.Sc Ag is done basically in two modes. Either on the basis of the marks obtained in the qualifying examination (Direct Admission) or written exam conducted by the university/institution that offers the degree.
The details on how to apply for B.Sc. degree in Agriculture can be collected from the authorized website of the institution. The information about course details and available number of seats can also be collected from here. The application forms can be obtained either through the college office or from the concerned web portal.
Entrance exams for B.Sc. Agriculture-
ICAR Entrance Exam (ICAR-AIEEA)- It is an agriculture entrance exam conducted by Indian Council of Agricultural Research (ICAR) for admission to 15% seats in Agriculture Universities in Bachelor Degree programs and 100% seats in ICAR Deemed to be Universities and NDRI, Karnal
EAMCET- Conducted for admissions in Agriculture colleges and universities in Andhra Pradesh
PAU Entrance Exam- Conducted by Punjab Agricultural University
KEAM- Conducted for agricultural colleges in Kerala
IGKV CET- Conducted by Indira Gandhi Krishi Vishwavidyalaya
Direct Admission in B.Sc. Agriculture-
Some colleges offer B.Sc. Agriculture admission simply on the basis of marks obtained in qualifying exam. Direct admissions in B.Sc. Agriculture are solely based on merit prepared by university/institute offering course.