Issue · 1991
Vol.41, Iss. 3
11 articles · All issues →
ArticlesNitrogen dynamic beneath five tree species in irrigated plantations in Pakistan
Zahid Javid, R. F. Fisher
In irrigated plantations of Punjab extensive management results in nutrient deficiency and tree growth becomes N limited on sites where non dinitrogen - fixing species are raised. The fast growing hybrid poplar and mulberry deplete the soil of its essential nu…
25 May 2024- Articles
Effect of source of nitrogen on growth, alkaliodal content and enzymes activities in Atropa acuminate
M. Bashir Khan
Total biomass.Percentage of tropane alkaloids.Total alkaloid per plant.Ornithine decarboxylase (ODC) activity, arginine decarboxylase (ADC) activity, arginine were determined separately in roots, stems and leaves of Atropa acuminate fed with nutrient solution…
25 May 2024 - Articles
Management studies to overcome adversities in bee culture
Wali-ur-Rehman, M. Ismail Chaudhry
Supplement feeding on a mixture of sugar, pollen and soyabean flour increased brood development of honeybee Apis mellifera L. Up to 40% in the dearth period (August, September) as compared to non-feeding colonies. An increase of 53% of brood development was fo…
25 May 2024 - Articles
Nitrogen dynamic beneath five tree species in irrigated plantations in Pakistan
Zahid Javid, R. F. Fisher
In irrigated plantations of Punjab extensive management results in nutrient deficiency and tree growth becomes N limited on sites where non dinitrogen - fixing species are raised. The fast growing hybrid poplar and mulberry deplete the soil of its essential nu…
25 May 2024 - Articles
Effect of 6 years livestock exclusion on palatable range vegetation of Banda Daud Shah, Kohat
Mohammad Noor, Mohammad Khan, Gul Nabi
A one hectare livestock enclosure was established at Banda Daud Shah in 1972, to study changes in vegetation and secondary succession. In May, 1978 vegetation in the exclosed and adjacent grazed areas was sampled to detect change in vegetation. Average yield a…
25 May 2024 - Articles
Conservation and protection of forest heritage in Sindh
Bahauddin Sirhindi
Sindh province has a total of 1.088 million hectares under forests, out of which 0.261 million ha. comprise of the riverine forests and 0.0704 million hectares are irrigated plantations, while the rest of the 0.756 million ha. constitute mangrove forests (0.28…
25 May 2024 - Articles
Book Reviews: 1. Calder, I. R., R. L. Hall and F. G. Adlar (1992): Growth and water use of forest plantation. Published by John Wiley and Sons Ltd, England 2. ILO, (1992). Fitting the job to the forest worker: An illustrated training man
Editor
Book Reviews: 1. Calder, I. R., R. L. Hall and F. G. Adlar (1992): Growth and water use of forest plantation. Published by John Wiley and Sons Ltd, England 2. ILO, (1992). Fitting the job to the forest worker: An illustrated training manual on ergonomics. Inte…
25 May 2024 - Articles
Interim financial analysis of on-station intercropping study in Pakistan
K. M. Siddiqui, Fazli Subhan Khan
Intro: Agriculture is the main stay of Pakistan economy contributing about 26% to GDP and employing about 54% of the labour force. Farmlands account for about 36.1 % of the total land area. 76% of rural and 55% of urban population mainly depends on wood for th…
25 May 2024 - Articles
Improved timber transportation strategy for the coniferous forests of Pakistan
Iqbal Mohammad, John Sessions Prof. Dr
Currently, log transportation from the coniferous forests of Pakistan is done mainly by 4 x 4 flat-bed trucks (popularly known as Guttoos), mainly on low quality dirt roads (generally known as Guttoo roads) involving rehandling of logs at a transfer yard (tran…
25 May 2024 - Articles
Effect of tree rows on the yield of wheat crop
L. H. Jafri, M. Hafeez, Naeem Hussain, M. Rafiq
A study was carried out at Chichawatni during 1986 under irrigated conditions to assess the effect of tree windbreaks of Shisham and Simal on the yield of wheat crop. The wheat was sampled in 1 m x 1 m sample plots along transect lines. The results indicate lo…
25 May 2024 - Articles
A plea for high priority for forestry sector in Pakistan
K. M. Siddiqui
The forestry sector is most neglected sector the world over and the situation in Pakistan is not different. Inspite of the fact that the forests cover about one third of total land area on earth, provide numerous benefits to man and contribute to ecological an…
25 May 2024