वृक्षायुर्वेद (सुरपाल - प्राचीन भारतीय पादप-विज्ञान, कृषि एवं वृक्ष-चिकित्सा सटीक)

Soils
Ustalfs
Inceptisols
Vertic Soils
Vertisols
Psamments
Udupts / Udalfs
Orthids
Loamy Alfisols
Sandy Alfisols
Lucknow
Patna
Bhubaneshwar
India
Figure 1. The probable region of Surapala's study.

various phenomena related to the establishment,
growth, and development of trees, cataloged them in a
systematic manner, and were operationally using the
information in their day-to-day work.

In the book, there is an extended section on
methods of planting trees. Recommendations on
planting distance for different species of trees were
suggested from 6 m to 10 m. Observations in the
text, such as planting trees too far resulting in
losses due to high velocity winds and that trees produce
low yields when planted too close reveal that
careful studies must have been made over sufficiently
long periods of time (something that we call
long-term experiments, today). The subject
of the preparation of pits includes references to
the depth, diameter, addition of soil mixed with ash
(high in K), encrushed bones (high in Ca), farm-
yard manure, and ingredients having
properties for controlling soil pathogens. The
knowledge on mulching the soil surface (to save on
water requirements), grafting, transplanting, plant
protection seems to be well developed at the time
when Vrikshayurveda was written. Integrated

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