In isolated tribal and hilly tracts where shifting cultivation (Jhum) is practiced, monetized markets and formal marketing infrastructure are largely absent.
Under these subsistence conditions, farmers trade agricultural grains, forest produce, and domestic handicrafts through the traditional Barter system, directly exchanging surplus commodities for other essential goods (like salt, iron implements, or cloth) without using currency.

Completely Randomized Design (CRD) is the design of choice for experiments conducted under controlled greenhouse or laboratory conditions:
In a greenhouse, experimental units (pots/trays) and environmental factors (temperature, humidity, light, substrate) can be maintained uniformly homogeneous, eliminating the need for blocking.
CRD provides maximum degrees of freedom for the experimental error and complete flexibility in the number of treatments and replications.
(In field trials with soil heterogeneity, RBD is preferred).

The Protection of Plant Varieties and Farmers' Rights Authority (PPV&FRA), Government of India, designated Dr. Yashwant Singh Parmar University of Horticulture and Forestry (Dr YSPUHF), Nauni, Solan (Himachal Pradesh) as the nodal DUS (Distinctness, Uniformity, and Stability) Centre for Willows (Salix spp.) and Poplars (Populus spp.) germplasm evaluation and registration.