Sulayman Bin Musa Al-Kala As Sirah Writer an Introduction and Research Analysis

Abu Al-Rab฀ ‘ Sulaym฀n Bin M฀sá Al-Kal฀‘฀ (565 A. H -- 634 A. H) is a great S฀rah writer. In this article, his scholarly and personal characteristics, the list of his works, tributes from scholars to his services and scholarly rank of Al-Kal฀‘฀ are presented. After presenting his personal features, an introduction and research analysis of his book “AlIktif฀’ fi Magh฀z฀ Al-Mu฀tafá wa Al-thal฀thah Al-Khulaf฀ ’ ” is given. Al-Kal฀‘฀ was a great scholar and authentic S฀rah writer. He got knowledge of Had฀th from Abul ‘At฀’. He attended the lectures of various scholars of Had฀th such as Abul Q฀sim bin Al-Jaysh, Abu Bakr bin Jadd, Abu Abdull฀h bin Zark฀n, Abdull฀h bin Fakhkh฀r, Abu Muhammad bin Jamh฀r, Najbah bin Yahy฀. Many great scholars of Had฀th such as Q฀฀฀ T฀nas were his pupils and brought his knowledge to far off countries. Al-Kal฀‘฀ wrote many books on Had฀th and S฀rah. Ibn Farh฀n, Abul Abb฀s and many other scholars have praised and paid tribute to Al-Kal฀‘฀ in their works. Main objective of the book under discussion, Al-Iktif฀’, is to disseminate knowledge of S฀rah and Had฀th prolifically. Al-Kal฀‘฀ has kept in mind the caution and the principles of S฀rah writing derived from the Holy Qur’฀n. Sulaym฀n Bin M฀sá has a great quality of writing S฀rah books. He can be called a born scholar and a writer. His quest for knowledge took him in different cities and he gained the best of knowledge and intellect that can be seen in all of his writings. He can be called a preserver and a protector of S฀rah literature. He is considered the most honored and dignified person among the scientific and cultural tradition of Andalusiyah. This article proves his abilities, qualities and excellence of work.

Biodiversity of Diazotrophs in Rhizosphere of Potato Solanum Tuberosum L.

Potato is the third most important food crop which requires high fertilizer that leads to environmental pollution. The use of biofertilizer is environment friendly and cost effective hence is suitable for sustainable agriculture. In this study, 44 bacterial isolates including mostly Azospirillum, Bacillus, Brevundimonas, Enterobacter, Pseudomonas and Rhizobium spp. were isolated from potato rhizosphere of which 32 were able to fix atmospheric N2 and 29 showed indole acetic acid (IAA) production. Strains showed high metabolic and genetic diversity based on BioLog, ERIC and BOX-PCR analysis. Out of potential plant growth promoting rhizobacteria (PGPR) tested for inoculation response in potato, it was observed that the N2 fixation (%Ndfa) decreases with the increase in applied N for Rhizobium sp. TN04 and Azospirillum sp. TN09 whereas no effect was observed for Azospirillum sp. TN03. Azospirillum sp. TN09 showed the highest %Ndfa among three tested isolates. Under field conditions, Azospirillum spp. TN03, TN09 and Rhizobium sp. TN04, Rhizobium sp. TN04 increased plant height (18%), dry weight (18.5%) tuber dry weight (14%) and tuber yield (19%). Azospirillum, Brevundimonas and Rhizobium spp. also maintain substantial population with potato roots. Metagenomics were employed to study total bacterial diversity in the rhizosphere of potato from major potato growing areas of Punjab, Pakistan showed that structural community (based on 16S rRNA) is almost similar across all the regions whereas functional diversity (based on nifH) of diazotrophs is mostly variable. Abundance of diazotrophs (108-1010 copies of nifH g-1 of soil) changed among regions. Pyrosequencing of nifH validated maximum diversity in Sheikhupura (446 species) whereas minimum in Gujranwala area (291 species). Overall in the potato rhizosphere, most abundant class was α-proteobacteria followed by β-proteobacteria. The study concludes that abundance of different genera varies across different regions due to many biotic and abiotic factors. Azospirillum spp. TN03, TN09 and Rhizobium sp. TN04 omnipresent and have potential to improve potato yield up to 15-19% subsequently saving 50% nitrogenous fertilizer, are recommended as potential candidates for biofertilizer production for potato crop. The study also shows that potato xvi harbor a diverse range of novel diazotrophs (not known earlier) which opens new horizons for future prospects.