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Singh, Avtar
- A Note on Pattern Knife for Evaluation of Turning Qualities of Timbers
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Indian Forester, Vol 111, No 10 (1985), Pagination: 802-811Abstract
Wood turning is mainly done by using conventional hand tools by the skilled and specialized wood turners. The performance of profiled wood turning knife fabricated recently indicated that these are exceptionally good in their performance. The operation of turning becomes very fast and thus energy is saved. The time lost in repeated measurements by the turner is at all eliminated. The time is thus also saved. The overall turning operation becomes very quick and simple. Development of a variety of such pattern knives for various wooden turnery items needs attention for their batch production. The process requiries no skilled wood turners which is inevitable in conventional hand turning.- Effect of Various Stages of Shifting Cultivation on Soil Erosion from Steep Hill Slopes
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Indian Forester, Vol 108, No 2 (1980), Pagination: 116-121Abstract
Soil erosion on Hill slopes (50-60 %) under first year jhurn, record year jhurn and abandoned jhurn and natural bamboo forest has been estimated as 146.6, 179.2, 30.3 8.2 c/hr respectively. Second year cropping in jhurn land have been found comparatively more hazardous than first year. It has been emphasized that to save precious forest wealth, it would be necessary to do away with the jhurn cultivation and adopt alternative conservation based farming system in North Eastern Hills Region.- Response of Eucalyptus Clones to Different Mrigation Regimes in Plantation
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Indian Forester, Vol 137, No 6 (2011), Pagination: 691-698Abstract
The leaf N. P. K and chlorophyll content in four different clone numbers viz. 72. 413. 2045 and 2070 of Eucalypts as influenced by three different irrigation regimes was studied in field conditions. The sampling of leaves was carried out during June and December 2007. The results of the study revealed that the accumulation of leaf N was higher in 50mm CPE in clone number 413 during June and December 2007. However, leaf P and K concentrations were significantly increased in clone number 413 when irrigation was 50mm and 75mm CPE during December 2007. Where as, the chlorophyll content was higher in clone number 413. In irrigation regime CPE at 50mm all the clones differed significantly with respect to chlorophyll content when irrigation frequency reduced to 100mm CPE chlorophyll content reduced, significantly in aU the clones during June and December 2007. Under aU the irrigation regimes the clone 2045 proved to be inferior to all other clones under study with regards to chlorophyll content where as, clone 413 maintained its superiority over other clone under study.Keywords
Leaf N, P, K, Chlorophyll Content- Growth Performance of Eucalyptus tereticornis and E. Camaldulensis Progenies under Various Levels of Soil Salinity
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Indian Forester, Vol 136, No 12 (2010), Pagination: 1610-1615Abstract
The study was conducted by transplanting one and half month old seedlings of six progenies, three each of Eucalyptus tereticornis and E. camaldulensis, in the pots filled with eight levels of artificially created soil salinity levels (ECe) i.e. control, 2, 4, 6, 8, 10, 12, and 14 dSm-1. The experiment was conducted by following completely randomized design with three replications. The data on plant height, collar diameter and number of leaves per plant were recorded after 90 days of study. All the growth parameters of both the species recorded significant differences among salinity treatments. The maximum values were recorded in control and the lowest values were found at salinity level of ECe 14 dSm-1 . Significant genetic variation was noticed in both the species for all the growth parameters. E. camaldulensis recorded significantly higher growth traits than respective values of E. tereticornis.Keywords
Eucalyptus Tereticornis, E. Camaldulensis, Salinity, Genetic Variation, Growth Traits- Response of Wheat to Different Irrigation Regimes Given under Poplar (populus Deltoides Bartr. Ex. Marsh) Based Agro forestry System
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February 2009 at a spacing of 5*4m on sandy soil at Punjab Agricultural University, Ludhiana. The experiment was
conducted using randomized block design with four irrigation treatments viz; I1 (Irrigation after 40mm CPE), I2 (Irrigation after 60mm CPE), I3 (Irrigation after 80mm CPE) and I4 (Irrigation after 100 mm CPE) given to poplar plantation and having six replications. The wheat yield was lower under the intercropping, more so during the second year, as
compared to the pure crop. The reduced irrigation regimes further reduced the grain yield of wheat and the best results
were obtained with the I1 irrigation regime. The grain appearance score, test weight and grain hardness were all
affected negatively during the second year of poplar growth and the restricted irrigation treatments. Consequently the
grain protein content increased with those treatments owing the shriveling of the kernels whereby the bran to
endosperm ratio increases. However the effect on the sedimentation value was not so pronounced.
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Indian Forester, Vol 139, No 1 (2013), Pagination: 75-77Abstract
A recently released, short duration wheat variety PBW-550, was intercropped in the poplar trees planted duringFebruary 2009 at a spacing of 5*4m on sandy soil at Punjab Agricultural University, Ludhiana. The experiment was
conducted using randomized block design with four irrigation treatments viz; I1 (Irrigation after 40mm CPE), I2 (Irrigation after 60mm CPE), I3 (Irrigation after 80mm CPE) and I4 (Irrigation after 100 mm CPE) given to poplar plantation and having six replications. The wheat yield was lower under the intercropping, more so during the second year, as
compared to the pure crop. The reduced irrigation regimes further reduced the grain yield of wheat and the best results
were obtained with the I1 irrigation regime. The grain appearance score, test weight and grain hardness were all
affected negatively during the second year of poplar growth and the restricted irrigation treatments. Consequently the
grain protein content increased with those treatments owing the shriveling of the kernels whereby the bran to
endosperm ratio increases. However the effect on the sedimentation value was not so pronounced.