پرو فیسر عبدالحق کی اقبال شناسی کے پہلوؤں کو آسانی سے دیکھا جاسکتا ہے۔ آپ نے اقبال کے ماخذ بیان کیے۔اقبال کے معاصرین پر روشنی ڈالی، اقبال اور غالب کے ذہنی رشتوں پر قلم اٹھایا۔ اقبال اور فیض کے فکری رویوں کو اجاگر کیا ۔ شارحین ِاقبال نے جو رویہ اختیار کیا اس پر روشنی ڈالی۔ آیۂ نور اور اقبال کے فلسفے پر روشنی ڈالی۔ ایسے ہی اور بھی بہت سے مضامین ہیں جو پروفیسر عبدالحق کی تصانیف میں موجود ہیں اور اس باب میں انہیں زیرِبحث لایا گیا ہے۔
اپ کے اس حصہ میں چند نثری پہلوؤں پر گفتگو کی گئی ہے۔ فکرِ اقبال میں یہ موضوعات بہت طویل ہیں اور اقبال شناس ان موضوعات پر دفتر کے دفتر بھی قلم بند کر چکے ہیں۔ یہاں صرف پروفیسر عبد الحق کے مضامین سے ان کے نظریات اخذ کیے گئے ہیں جو ان موضوعات سے تعلق رکھتے ہیں۔ اختصار کے پہلو کو مد نظر رکھا گیا ہے۔ اگر ان موضوعات کو طوالت دی جاتی تو تحقیق کا رخ بدل جاتا اور تحقیق میں یہ بات اہم ہوتی ہے کہ محقق موضوع کی حدود میں رہے۔ دائرہ اختیار میں رہنے سے سچائی بھی سامنے آتی ہے۔
اس حصہ میں قومیت ، وطنیت اور مرد مومن کے حوالہ سے گفتگو موجود ہے۔ اس کے علاوہ ”دیگر نکات “کے عنوان سے بھی کچھ گفتگو ہے۔ اس میں دراصل دو مضامین شبلی اورمعاصرین سے لیے گئے ہیں۔
هدف البحث لتفسير العلاقة القائمة بين تقنية وسائل الاتصال والقطاع الزراعي، ومدى تأثيرها في الإنتاج والإنتاجية الزراعية، بوصفها إحدى التقنيات الحديثة الواجب توفيرها لضمان تحقيق التنمية الزراعية، إذ يؤدي الاتصال الزراعي دوراً كبيراً في التأثير على المجتمع الريفي، فالإعلام الزراعي يحمل مضموناً قيماً يتمثل ببرامجه الإعلامية الزراعية، فهو يهتم عمومًا بتوجيه المعلومات البحثية العلمية والأخبار الزراعية والتوجيهات المؤسساتية، ذات العلاقة بالإنتاج الزراعي والمواد الإعلامية الزراعية، للعاملين في المجال الزراعي. وأهم النتائج تتمثل في أن للاتصالات الحديثة دورًا كبيرًا في التأثير على الإنتاج الزراعي وتطويره، وهو يواجه معوقاتٍ كبيرةً في العراق، تتمثل بضعف استخدام المؤسسات ذات العلاقة لتلك الوسائل، وعدم تحديث برامجها بما يخدم النشاط الزراعي، فضلاً عن عدم توافر أجهزة الحاسوب وخدمة الإنترنت وضعف المعرفة بها من قبل الفلاحين، اما أهم المقترَحات فتمثلت بزيادة التوجه إلى الاهتمام بهذه التقنية وتطويرها، لا سيما في المؤسسات الحكومية ذات العلاقة، وإقامة الندوات وورش عملٍ لتدريب الفلاحين على استخدامها.
Studies on dormancy, ecology, phytotoxic effects, competition and chemical control of Rhynchosia capitata (Roth) DC in mungbean (Vigna radiata (L.) Wilczek) were investigated in the laboratory experiments at Department of Agronomy, University of Agriculture, Faisalabad and under farmer’s field conditions. In laboratory experiments different treatments for breaking dormancy of R. capitata seeds were evaluated. Seeds were soaked in thiourea, KNO 3 , HCl, HNO 3 and H 2 SO 4 as well as scarified mechanically (sand paper). Results indicated that seeds of R. capitata show signs of physical dormancy that is mainly because of impermeability of their coat. Mechanical scarification, acid scarification (soaking of seeds in H 2 SO 4 for 60 and 80 and in HCl for 12 and 15 h) were very effective in breaking dormancy and promoting germination. Seed soaking in HNO 3 for 1 to 5 days showed little effect, while, various concentrations of thiourea and KNO 3 were ineffective in breaking seed dormancy of R. capitata. Germination response of R. capitata to environmental factors such as temperature, salt stress, drought stress, pH, light and seeding depth were also studied. Germination increased as the temperature increased from 25 o C and considerably reduced at 45 o C. Germination of R. capitata seeds was not influenced by presence or absence of light. Increase in salt stress, moisture stress and seed burial depth significantly decreased the seed germination of R. capitata. Seeds of R. capitata had ability to germinate over a wide range of pH (5-10). In seed burial trial, maximum seedling emergence of 93 % was recorded at 2 cm depth, and seedlings failed to emerge from a depth of 12 cm. In third laboratory experiment, allelopathic influence of R. capitata on germination and seedling growth of mungbean along with detection of the phytotoxic materials liable for this action were studied. Aqueous extracts of root, shoot, leaf, fruit and whole plant (5%) adversely affected germination and seedling growth of mungbean, but higher inhibition was seen with R. capitata leaf water extract. A linear decrease in the germination characteristics of mungbean was observed with the decrease in the concentration of leaf extract from 5% to 1%. The soil incorporated residues (1-4% w/w) of R. capitata stimulated the development of root and hypocotyl at low concentrations and inhibited their development at elevated concentrations. Rhynchosia capitata soil incorporated residues (4% w/w) significantly reduced the seedling vigour index of mungbean in addition to its significant effect on total germination. A noteworthy amount of water soluble phenolic acids were found in extracts of different plant parts of R. capitata. Total phenolic acids were greater in leaf extract compared to that of stem, fruit or root extracts. Two phenolic acids, vanillic acid and 4-(hydroxymethyl) benzoic acid were found in R. capitata leaf extract. Effect of different weed crop competition periods i.e. full season competition, weed crop competition for 3, 4, 5, 6, 7 weeks and zero competition were studied under field conditions on mungbean. The results showed that full season weed competition produced highest weed fresh and dry weight, maximum NPK contents (%) and NPK uptake, highest Fe, Mn, Na, Zn, Ca, Cu and Mg contents and micronutrients uptake by R. capitata in both the years of study. The maximum plant height, number of pods per plant, grain number per pod and 1000-grain weight of mungbean was recorded in weed free plots. Increase in competition period decreased above parameters of mungbean significantly. Increase in R. capitata competition period decreased the mungbean grain yield significantly. In 2011, the weed-free plots gave the highest grain yield of 1688.6 kg ha -1 followed by competition 3 weeks after planting with 1582.0 kg ha -1 of seed xxiyield. The full season R. capitata competition decreased the grain yield to 869.3 kg ha -1 . Similar trend was also observed during 2012. In second field experiment, the efficacy of herbicides namely pendimethalin + prometryn @ 875 g, 700 g and 525 g a.i ha -1 , S- metolachlor @ 1440 g a.i ha -1 and pendimethalin @ 825 g a.i ha -1 in controlling R. capitata was evaluated. All doses of the herbicides suppressed the dry biomass of R. capitata from 60 to 78% in 2010 and 2011. Pendimethalin+prometryn @ 875g a.i. ha -1 , recorded (74% in 2010 and 78% in 2011) maximum reduction in total weed dry weight. Among herbicide treatments, maximum grain yield was recorded with pendimethalin+prometryn @ 875 g a.i. ha -1 in both the years. Pendimethalin + prometryn @ 875 g a.i. ha -1 proved best treatments for effective control of R. capitata in mungbean and to get maximum economic benefits.