Reduction of wildfire hazard: Correct timing of prescribed burning of dead vegetation in timber reduces danger of uncontrolled fires in those areas
AuthorsH. H. Biswell
A. M. Schultz
Authors AffiliationsHarold H. Biswell is Professor of Forestry, University of California, Berkeley; Arnold M. Schultz is Associate Specialist in Forestry, University of California, Berkeley.
Hilgardia 10(11):4-5. DOI:10.3733/ca.v010n11p4. November 1956.
Dangerous fire situations may be created in areas of second-growth ponderosa pine left unburned for a number of years and thereby permitting a buildup of dead shrubs, needles and other litter—the rough—as well as overpopulations of small trees. When such areas are burned by wildfire in summer, or fall, all living vegetation is apt to be killed and a poor land condition results.
Also in this issue:Lemon industry in California: Economic objectives and operation of state marketing order for lemon products analyzed in terms of its effectiveness
House packing western lettuce: Changing methods of harvesting head lettuce in the Salinas district create problems for operators of packing houses
Gains of two types of lambs: Suffolk cross lambs from whiteface ewes showed slightly faster gains than Corriedale crosses in comparative study
Aqua and anhydrous ammonia: Good sources of nitrogen fertilizers but materials should be placed well away from plants to lessen chance of injury
Nitrate levels for vaiencias: Tree growth improved in soil and solution cultures when nitrogen was maintained at relatively high concentrations
Phosphorus in citrus soils: Removal and redistribution of phosphorus from the soil during twenty-eight years of cropping with citrus studied
Pest control sprays on oranges: Effects of oil and parathion sprays on orange fruit size and quality. subject of three-year study in southern California
B Vitamin content of avocados: Studies reveal California-grown avocados are in superior group of foods as source of pantothenic acid and vitamin B
Development of the flower and macrogametophyte of Allium cepa
Ontogeny and structure of collenchyma and of vascular tissues in celery petioles
Vessel development in celery