غریب الحدیث پر موجود کتابوں کے اسالیب کا مطالعہ اور ان کے مناہج کا تقابلی جائزہ

Allah the elevated bestowed on prophet Muhammad SAW two basic sources of guidance for Muslim Ummah, The holy Quran and Hadith. Due to this significance of Hadith, Muslims have invented more than five hundred sciences related to Hadith. One of these sciences is Ilm Garb ul Hadith. Sheikh Moaamer bin muthana was the first scholar who has written a book on this topic.  From then on Muslim scholars have researched a lot in this regard. Dozens of scholars spent their time and wealth on it. According to the author of Moaajm ul mua’ajam more than 90 books on the topic have been published but eight of them gained much publicity and famous hood among them. Abu Ubaida, Abu Adnan, Abu Ubaida Qasim bin Salam, Ibrahim bin Ishaq Al Harbi, Abu Ubaida Ahmed bin Muhammad Alhervi, Ibn Jauzi, Muhammad bin Atheer Aljazree, Zemakhsharee. The following article consists of a brief introduction of Ilm Gharib ul Hadith along with a brief history of research about it. Then the eight famous books on Gharib ul Hadith and there way of research are examined in brief along with examples. At last a comparative study of the work done by these eight scholars is given in order to explore the differences and similarities among them.

Bio-Economic Studies on Water Use Efficiency for Quality Onion Bulb Production

Onion is second most important crop after tomato in the world. Due to shallow root system, absence of root hairs and reduced leaf water potential, onion is considered a drought sensitive crop. Pakistan is ranked 8th in onion production. Water availability in Pakistan is continuously declining due to population explosion and limited water storability facilities in the country. Increasing water productivity seems to be the best possible option which should be adopted for better future. Keeping in view above aspects, a study was conducted to improve water use efficiency of onion. Three different experiments were executed in the field under RCBD factorial arrangements. In the first experiment, three irrigation methods (furrow irrigation, alternate furrow irrigation and fixed furrow irrigation) were tested with or without mulching. In the second experiment, onion crop was subjected to 50% water stress at different growth stages, vegetative, bulbing and bulb maturation (individually as well as in all possible combinations),to find out critical crop growth stage. A third experiment was conducted to determine the optimum irrigation interval and quantity needed for quality onion bulb production. All three experiments were conducted during 2012 and 2013. Results indicated that alternate furrow irrigation method with mulching gave similar results as normal furrow irrigation without mulching. Among growth stages, water stress at vegetative and bulbing stage was found most destructive. Water stress at these growth stages significantly reduced plant height, leaf diameter, number of leaves, leaf area, leaf area index, bulb diameter, bulb weight, number of bulbs per plant, and total and marketable yield per hectare. However, significant increase in percent dry matter contents, bolting, acidity and soluble solid contents was observed under water stress. Mulching significantly improved the water use efficiency of the plant and benefit cost ratio.Results showed that under drip irrigation system, application of 3mm and 6mm water at 2 day irrigation interval is suitable for onion crop under mulched and non-mulched conditions respectively.