A. Diffusion
B. Mass flow
C. Root exudation
A. Microorganisms
B. Weeds
C. None of the above
A. Sustainable agriculture
B. Improve agriculture
C. Both a and b
A. Ecosystems
B. Community
C. Both a and b
D. non of there
A. International pest management
B. Interior pest management
C. Integrated pest management
D. non of there
A. Rhizoeionia solani
B. Rhizoctonia bataticola
C. Both of them
A. White fly
B. Aplud
C. Jassid
D. Heliothus
A. 2.8 million hac
B. 3.75 million hac
C. 4.00 million hac
D. 4.5 million hac
A. 5 Meters
B. 4 Meters
C. 3 Meters
D. 2 Meters
A. Certified seed
B. Nucleus seed
C. Foundation seed
D. Registered seed