Page 59 - Introduction to Agriculture by: Aqleem Abbas
P. 59

Introduction to Agriculture         Notes prepared by: Aqleem Abbas


               Adaptation
               It is adapted to humid tropical climate which has plenty of rainfall, sunshine and high temperature. It is
               adapted to heavy clay or clay loam soil . for its production PH  range should be 4.5 to 8.5 . However grow
               well in acidic soil due to major micro-nutrient availability.



               We can store water in clay soil but we cannot store water in sand.

               Sowing methods of rice.

               Transplantation of nursery


               Direct seeding

               It is done in countries which has adequate water supply system. For transplantation we develop nursery
                                                        th
               establishment. It must be completed before 20  may. It takes 25 to 40 days for its establishment. There
               are three methods of nursery establishment.

               Wet bed method

               Dry bed method


               Rabbi method
               Wet bed method


               Wet bed method is practiced in traditional growing area of rice. Fine texture soil in which clay content is
               greater than sand. Plots are puddle and pre-emerged seed are broad casted. Seed rate is 20 to 40 kg per
               hectare. High seed rate results in weak seedling whereas low rate encourage weed to sprout.

               Dry bed method is practiced where the soil is loamy or silt loam and puddling is not possible. Plots are
               prepared in dry conditions or field capacity level. Seed rate is 1.5 times higher than wet bed method.
               Weeds control is not satisfactory.

               Rabbi method is practiced in dera ghazi khan area where the soil is hard and seedling uprooting is
               difficult. Nursery plots are prepared with spade and crop residue is spread and burnt a day before sowing
               to loosen the soil. Seed rate is twice as compared to wet method. Weeds can be controlled satisfactory.

               Small size seed ( basmati)

               Coarse seed (mehran)

               Seed rate is low for fine or small size seed (basmati than coarse seed)

               Production technology

               Land preparation
   54   55   56   57   58   59   60   61   62   63   64