In the following question, select the missing number

Soils with low PH are more acidic, Acid soils are best reclaimed by using:

At what temperature is retting in jute typically done?

When there is crossing over between centromere and gene under consideration, the segregation of that gene takes place during:

What are the genes responsible for dwarfness in wheat ?

‘Centering’. The first cut on a young tea plant is at which of the following: 

Which citrus pest causes damage by consuming leaves from the margin and is most destructive during the nursery stage of the crop?

Botanical name of six row barley is 

Tissue culture is classified as which type of propagation method in horticulture?

Sulphate navel stores are by-products of the following pulping process:

Horizontal growth of seedling, swelling of axis and apical hook formation of dicot seedlings are associated with-