By Panna Ram Siyag

ISBN-10: 9400774508

ISBN-13: 9789400774506

ISBN-10: 9400774516

ISBN-13: 9789400774513

The e-book is a accomplished guide of perform for execution of afforestation and tree planting programmes in arid and semi-arid tropics. It encompasses a compact working account of the expertise of afforestation and the correct ideas and practices in administration of afforestation initiatives. It presents a variety of established details and a couple of version designs that are gainfully positioned to take advantage of by way of the sector point supervisors as additionally through the managers inquisitive about making plans and keep an eye on of such initiatives. Written through a working towards professional, the e-book is helpful for a person fascinated by the perform of afforestation and tree planting, be he a tree hobbyist or a college instructor, a qualified forester or a senior coverage maker in executive, an industrialist or a philanthropist, an environmental activist or a member of a neighborhood provider organization.

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Smaller volume of these containers—usually in the range of 150–300 ml—leads to savings on procurement of potting mix and on operations such as irrigation, pot turning, and transportation. On the other hand, capital cost incurred on procurement of root trainers can be about 10 times as high as that of polypots. In terms of cost-effectiveness, therefore, a root trainer must be used 20 times over—in those many seasons—before it can compete with the polypot. Although a superior method on technical grounds, adoption of root trainers should be accompanied by training of workers in use of these containers in nursery and in field at the time of outplanting.

After average germination period, the failed polypots can be transplanted with the plants from the seedbeds. This double-edged method also ensures that all the plants are of the same age and there are no laggards in terms of age. Another technique to overcome resowing cycles is to sow multiple seeds in each polypot. A general scheme is to sow one seed in a polypot if expected germination percentage is more than 80 %, two seeds if this is 50–80 %, and three seeds if this is 35–50 %. After germination has taken place, the extra seedlings are pricked out and transplanted to those polypots where germination has failed.

Sand with loam will serve the purpose as well. If the available loam is heavy, its proportion in potting mix can be corrected accordingly. Sand should be free from salinity, weed seeds, and colonies of termites. If the soil within or near the nursery site is free from salinity and other deleterious factors, it can be used and cost of transportation can be saved. 6 Procurement and Storage of Polypots The ubiquitous polyethylene tube (polypot) has become the standard container for raising plants in nurseries in many tropical countries.

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Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics: A Manual of Technology & Management by Panna Ram Siyag

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