Agricultural Scientist scope

M.Sc plant breeding-
You could begin your career in agriculture universities and central universities as a:
Junior plant breeder or as an assistant professor or in the central research organizations of the Indian agricultural research institutes or in the crop research directorates or, plants hereditary resource bureau as plant reproduction or by the agriculture research services or, as a generalist and cytogeneticists.
M.Sc in food technology-
Popular sectors for employment:
Food manufacturing and processing (Grains, fruits, vegetables, fish, meat, etc.)
FMCG Pharma-Biotech
Agro-Biotech
Dairy Firms
Poultry Firms
Bakeries & Confectionaries
Breweries
Retailers
Healthcare
Academia and Research Institutes
Food Packaging

Yes, you can. You must contact the university/department for Ph.D or integrated Ph.D which will include both the masters and the research degree. Here are few links from the university which might assist you regarding scholarships. The university offers a number of scholarship to master's degree students on merit- basis. Full funding in Ph.D is difficult in UK yet check the links and contact the university.
https://www.reading.ac.uk/life/life-fundingsearch.aspx?url=http://www.reading.ac.uk/studentfinance/search/searchresults.asp
http://www.reading.ac.uk/15/Study/fees/pg-scholarship-scheme-2015.aspx
http://www.reading.ac.uk/apd/pg-research/apd-pgrabout.aspx