Tomato is one of the most demanding crops in terms of water and fertilizer inputs. To meet irrigation water demand, growers use surface and ground water resources. These resources are in decline. Realizing the importance of water, tomato yield under deficit irrigation regimes, and different Nitrogen (N) levels, was studied during 2015 and 2016 at the research farm of the University of Agriculture Peshawar, Pakistan, using factorial arrangement of randomized complete block design (RCBD). These factors were four irrigation levels; full irrigation (I0), 15% deficit (I15), 30% deficit (I30) and 45% deficit (I45); and four nitrogen doses;100% of recommended dose (120 kg ha-1) (N100), 85% of recommended dose (N85), 70% of recommended dose (N70) and 55% of recommended dose (N55). Frequency Domain Reflectometry (FDR) was used for soil moisture monitoring. Io was based on 30% of management allowed deficit. Current study results indicated that deficit irrigation (I15, I30 and I45) had significant effect (P<0.05) on plant height, number of fruits per plant, leaf area index (LAI), total yield, marketable yield, water productivity, nitrogen uptake, Potash uptake (K) and Nitrogen use efficiency (NUE). Compared to I45, full irrigation enhanced, number of fruits per plant, LAI, total yield, marketable yield, N uptake, K uptake and NUE by 34, 30, 24, 25, 13, 15.5 and 24%, respectively. Water productivity was 25.8% higher for I45 compared to I0. Effect of deficit irrigation on dry-to-fresh weight ratio, days to 50% flowering, individual fruit weight and Phosphorous (P) uptake was found to be non-significant. Effect of Nitrogen doses number of fruits per plant, LAI, total yield and NUE was found to be highly significant. However, the effect on dry-to-fresh weight ratio, plant height, days to 50% flowering, individual fruit weight, marketable yield, water productivity and NPK uptake were found to be non-significant. Maximum dry-to-fresh weight ratio (0.83) was recorded for N70, maximum plant height (77.7 cm) was obtained under N85, maximum number of days to 50% flowering (42.3) were recorded for N100, highest individual fruit weight (66.6 g) was obtained in N85, while P uptake (10.2 kg ha- 1) was obtained in N85 and maximum NUE (414) was recorded for N55. Recommended dose of Nitrogen (N100) enhanced number of fruits per plant (12.6%), LAI (22.8%), total yield (8%), marketable yield (6.9%), water productivity (6.3%), N (5.3%) and K uptake (9.8%) compared to N55. Deficit irrigation increased the risk of fruit damage in tomato plants. Water productivity decreased with increasing irrigation levels. Nitrogen and potash uptake were increased with increasing irrigation levels, while phosphorous uptake was not significantly affected. Increasing irrigation and Nitrogen doses increased the risk of nitrate leaching beyond the root zone, making it unavailable for plant uptake. Full irrigation and Nitrogen (120 kg ha-1) is recommended for higher total yields, however, 45% less nitrogen can be applied through a drip irrigation system without compromising marketable yield. In areas where water is a scarce commodity, highest water productivity can be achieved with 45% deficit irrigation. Simulation of Nitrate leaching with HYDRUS-1D showed that with decreased irrigation levels below field capacity, and with the recommended dose of Nitrogen, nitrate leaching was higher than with reduced Nitrogen doses and full irrigation. Increasing irrigation levels above field capacity with recommended dose of Nitrogen showed higher nitrate leaching than increasing Nitrogen doses above recommended dose of Nitrogen and full irrigation. HYDRUS-1D can be efficiently used for nitrate leaching simulation.
عارف میرٹھی (۱۹۰۰۔۱۹۷۵) کا اصل نام سید محمد عسکری حسن تھا۔ آپ میرٹھ میں پیدا ہوئے۔ زندگی کا زیادہ تر حصہ سیالکوٹ میں گزارا۔ نور میرٹھی سے اصلاح لیتے تھے۔ ہر صنفِ سخن میں مہارت رکھتے تھے لیکن رباعی اور غزل زیادہ کہتے تھے۔ ۱۹۲۳ء میں میرٹھ کے مشاعرے میں بہترین شاعر قرار پائے۔ اس مشاعرے سے اشعر الشعرا کا خطاب اور طلائی تمغہ ملا۔ آپ کو صنفِ تاریخ گوئی میں کمال حاصل تھا۔ آپ نے سیالکوٹ‘ ڈسکہ اور گوجرانوالہ میں اپنے تلامذہ کی ادبی تربیت بھی کی۔ قومی سطح کے مشہور شاعر اکبر حمیدی‘ ناصر نقوی‘ فیض محمد گوہر‘ پروفیسر صادق علی اور ممتاز دانشور سید غلام عباس کو آپ سے شرفِ تلمذ حاصل ہے۔(۳۳۹)
عارف میرٹھی کی شاعری میں کوئی جدت نہیں بلکہ روایتی رنگ کی شاعری ہے۔ عشق و جنون‘ عشقِ حقیقی اور تقدیر عارف کی شاعری کے اہم موضوعات ہیں۔ اس حوالے سے اشعار ملاحظہ ہوں:
It is obvious to everyone who has associated with Arabic and Urdu literature that both Mahmood Sami al Baroodi and Allma Muhammad Iqbal are the shining stars in the orbit of Arabic and Urdu literature, because each of them made the world busy by his literature, and tied to blow the spirit of innovation in the style of poetry and made free it from affectation and returned it to sincerity and integrity of expression, and each of them developed his political and cultural thought by traveling to Europe. In this article we have tried to highlight the political and literary life of Iqbal and al Barood, we also tried to analyze their efforts in the field of literature and their stand on the politics
This thesis is divided into three sections, Section A, Section B and Section C. Section A deals with ethnomedicinal studies of flora of Southern Punjab, Pakistan and establishment of a Herbarium in Lahore College for Women University. Section B consists of biological activity (antimicrobial and anticancer) of extracts of some of the plants collected from South Punjab and Section C describes the isolation and characterization of bioactive compounds by chromatographic and spectroscopic techniques. It is for the first time that the flora of Southern Punjab has been searched and reported. Complete ethno medicinal studies of 187 plants belonging to 52 families found in South Punjab is documented and also categorized therapeutically for the first time from this region. A first world class herbarium has been established in Lahore College for Women University by categorizing and preserving 186 voucher specimens of plants collected from all over Pakistan. The herbarium is named after the renowned teacher and pioneer Botanist Miss Prem Madan in dedication to her services in the field of Botany in Lahore College for Women University, Lahore. For biological activity seven popular ethnomedicinal plants collected from Southern Punjab namely Capparis decidua (Capparidaceae), Coronopus didymus (Brassicaeae), Heliotropium strigosum (Boraginaceae), Salsola kali (Chenopodiaceae), Salvadora oleoides (Salvadoraceae), Tamarix aphylla (Tamaricaceae) and Withania coagulans (Solanaceae) were selected for antimicrobial and anticancer activity. Topical anti tumor activity of these seven ethnomedicinal plants have been investigated in detail for the first time and all extracts of the Coronopus didymus, Salsola kali, Salvadora oleoides and Tamarix aphylla showed anti tumor activity and provided a new source of further exploration in this respect. While methanol extracts of Withania coagulans, Capparis decidua and Heliotropium stirgosum had been shown to possess best potential against the topical tumor for the first time. The Pet ether, methanolic and dichloromethane extracts of Withania coagulans, Capparis decidua and Heliotropium strigosum reduced the malignancy and cured the fibrous hyperplasia. The screening of these selected medicinal plants for antibacterial activity against six bacterial strains namely Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Streptococcus pneumoniae, Bacillus subtilus and Sarcina lutae after fractionation in different solvents (methanol, pet ether, dichloromethane) by agar well diffusion method showed the methanol extracts to be more potent then pet ether and dichloromethane extracts. The antibiotic properties of these seven strains were studied against Sarcina lutae, Streptococcus pneumoniae and Pseudomonas aeruginosa bacterial strains for the first time. Methanol extracts of Capparis decidua and Withania coagulans were found to be best bactericidal against all the tested bacterial strains. While methanolic extract of Heliotropium strigosum was very active against all the bacterial strains except Streptococcus pneumoniae. Synergistically Withania coagulans in combination with Pinus wallichiana, Capparis decidua, Hypericum perforatum, Heliotropium strigosum, Coronopus didymus and Salvadora oleoides showed best activity against Staphylococcus aureus (MIC > 0.1μg/ml) only. The methanolic extract of Salsola kali in equal amounts with Senecio chrysthenoides synergistically inhibited the growth of all bacterial strains except Sarcina lutae. The screening of pet ether, methanolic and dichloromethane extracts of Coronopus didymus, Withania coagulans, Capparis decidua, Salsola kali, Heliotropium strigosum, Salvadora oleoides, and Tamarix aphylla was performed against seven fungal strains namely Trichoderma viridis, Aspergillus flavus, Fusarium laterifum, Aspergillus fumigatus, Candida albicans, Trichophyton mentogrophytes and Microsporum canis . By using ANOVA critical value F.05 (6, 36) = 2.38 the plant extracts were compared with other antifungal drugs and it was found that extracts of Capparis decidua, Withania coagulans and Heliotropium strigosum showed best antifungal activity against all the fungal strains.(F-Table value< F-calculated value). On the basis of ethnomedicinal studies and for showing best biological activity three medicinal plants namely Heliotropium strigosum, Withania coagulans and Calotropis procera were selected for isolation and identification of bioactive principles and some other useful applications so as to explore the potential of these plants on commercial basis. Due to its reported biological activityl, abundance and wild nature and use as heavy metal ion remover Calotropis procera was also selected for the first time for identification of its organic phytochemicals having functional groups responsible of removing Cr (III) by spectroscopic techniques so as to put it to some commercial use. Two Flavonoid aglycones Taxifolin (1) and quercetin (2) had been isolated from Heliotropium stirgosum for the first time and identified by comparison of their spectral data with that given in the literature. Taxifolin (1) Quercetin (2) GC MS studies had resulted in identification of the following compounds in Withania coagulans essential oil for the first time, 1. Cyclohexane (3) (C6H6) 2. Borane carbonyl (4) (CH3BO) 3. 3-methyl, hexane (5) (C7H8) 4. Heptane (6) (C7H16) 5. Hexanoic acid (7) (C6H12O2) 6 Nonanoic acid (8) (C9H18O2) While n-hexane fraction of Calotropis procera was subjected to GC MS analysis following open-chain carboxylic acids and their methyl esters were identified, 1. n-Heptanoic acid methyl ester (9) (C8H16O2) 2. n-Decenoic acid (10): (C10H18O2) 3. n-Nonanoic acid methyl ester (11) (C10H20O2) 4. n-Decenoic acid methyl ester (12) (C11H20O2) The FT-IR spectra before and after adsorption of Calotropis procera roots indicated that bonded –OH groups and /or –NH and carboxyl groups especially played a major role in chromium (III) biosorption which was confirmed by GC MS analysis of Calotropis procera showing the presence of carboxylic acids for the first time.