Search or add a thesis

Advanced Search (Beta)
Home > Performance of Canola under Summer Crops Green Manuring Management Scenarios and Varying Nitrogen Levels

Performance of Canola under Summer Crops Green Manuring Management Scenarios and Varying Nitrogen Levels

Thesis Info

Access Option

External Link

Author

Khalid Ali

Program

PhD

Institute

The University of Agriculture

City

Peshawar

Province

KPK

Country

Pakistan

Thesis Completing Year

2015

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/7782/1/Khalid%20Ali%20Full%20.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726856406

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


The improved varieties of field crop are although very responsive to the higher inputs but it deplete soil fertility. The Integration of green manuring crops along with inorganic fertilizers in the existing cropping system can help to sustain soil fertility and crop productivity. The main objective of the experiment was to assess the effect of green manuring crops on soil fertility and crop productivity. A two years long field experiment was conducted at the Agricultural Research Institute Tarnab, Peshawar-Pakistan. The experiments were laid out in randomized complete block design (RCBD) with split plot arrangement using three replications. A combination of crop species (guar and millet) and crop age at green manuring (40,70 and 100 days after sowing, DAS) were allocated to main plots while the combination of plant parts (whole plant and stubbles) used as green manuring and nitrogen levels (0, 75 and 100 kg ha-1) were applied to sub plots. The two years average data showed that as compared to millet, guar as preceding green manuring crop had significantly improved canola growth, seed yield, oil yield and qualitative traits. Furthermore, based on soil tests, the soil N contents in guar sown plots was significantly higher when tested prior to canola sowing and after canola harvest. The data also revealed that soil C contents in guar sown plots after canola harvest was also significantly higher. Canola sown on the guar green manuring plots had delayed flowering as compared to those green manuring of millet sown plots. Whole plants green manuring as compared to stubbles had significantly enhanced canola growth, yield and yield components and qualitative traits. Based on soil test the soil N contents before canola sowing and after canola harvest and soil C contents after canola harvest were significantly higher in guar incorporated plots as compared to millet plots. Plants that were incorporated at the age of 100 DAS had significantly lower canola growth, yield and yield components, seed N and protein contents as compared with 40 and 70 DAS green manuring. However, the soil C contents of 100 DAS were significantly higher than 40 and 70 DAS green manuring. Although the green manuring at the age of 40 DAS had significantly lower leaf area plant-1 and leaf area index of canola, the other attributes of canola due to age of incorporations (40 DAS) were at par with those of green manuring at the age of 70 DAS. Nitrogen application had significantly affected all the parameters except emergence m-2, seed pod-1 and glucosinolates content. Increasing N level from 0 to 100 kg ha-1 had significantly enhanced growth, yield and yield components and qualitative traits of canola. Nitrogen application at the rate of 75 kg N ha-1 had significantly delayed maturity, having taller plants, more branches plant-1, harvest index, oil yield, and seed protein content as compared with 100 kg N ha-1. Significant Improvement in yield and yield xiii components, quality of canola having taller plants with delayed flowering and maturity were recorded in second year of the experiment as compared with first year. Data on the interaction effect showed significant increase in seed and oil yield of canola with the increase in N levels in both guar and millet sown as preceding green manuring crops irrespective of their age of incorporation. Guar as a green manuring crop had significantly improved yield and quality of canola as compared with millet crop, whole plant green manuring of the crop species at 40 DAS had enhanced seed, oil yield and quality traits followed by 70 DAS. Application of 100 kg N ha-1 along with the green mannuring management had significantly increased all the parameters except oil contents of canola. Data on economic returns showed that guar at 40 DAS incorporation along with 100 kg N ha-1 gave maximum value cost ratio. Our study indicated that green manuring provides an opportunity to improve quantitative and qualitative yield of canola in addition to improving soil health without disturbing the existing cropping system. Hence, it is concluded that green manuring preferably legumes incorporation as whole plant up to the age of 40-70 DAS coupled with 100 kg N ha-1 is recommended for enhancing overall productivity and net economic returns of canola in agro-ecological zones of Khyber Pakhtunkhwa Province, Pakistan and areas alike.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

Chapter 4: Dr. Isrār Aḥmad as Mufassir-E-Qur’ān

Characteristics of Bayān-Al-Qur’ān

            “Bayān al-Qur’ān” in the series of services towards the Qur’ān by Dr. Isrār Aḥmad (d:1431A. H/2010A. D) has an important standing. He had been presenting the translation besides brief explanation of the Qur’ān during Ṣalāt-e-Tarāvīh since 1984A. D; this series of daura-e-Tarjuma (translation) was liked world-wide.

            The task of publishing daura Tarjuma-e-Qur’ān(held in 1998A. D inQur’ān Academy, Karāchī) in a book form had commenced in the life-time of Dr. Isrār Aḥmad. This important assignment was taken on by Anjuman Khuddām al-Qur’ān, Khyber Pakhtūnkhwāh, Peshāwar; so far, five volumes of Bayān al-Qur’ān upto Surah al-sajadah have been published.

            Dr. Isrār Aḥmad’s Tarjuma-e-Qur’ān comprising a brief translation and explanation in the form of Bayān al-Qur’ān has the following peculiarities:-

1. He presents the points of explanation (Tafsīr) in a very simple but convincing way for the audience which is easy as well as understandable. While explaining the ‘Split Alphabets’(ḥarūf-e-Muqatti‘āt) with refernce to the first Āyah of Surah al-baqarah, he writes:

            “These are the split words; suffice to know that no one knows the real and specific meaning of these with certainty except Allāh and His prophet(SAWS). This is a mystery resting between Allāh and the prophet(SAWS). Many explanations have come up but none of these is attributable or endorsed by the prophet(SAWS). However, it is known that the use of such split-words was common in poetic expression of the Arabs, hence they never raised a finger about the same. Out of 114 Suwar-e-Mubārakah (chapters) in the Qur’ān, 29 begin with such alphabets (ḥurūf-e-muqatti‘āt). ” [1]

            Dr. Isrār made use of simple words to explain even the complex issues so that the audience follow the message of the...

الاحتلال الفرنسي لتونس وتوقيع معاهدة باردو عام 1881 والموقف العثماني منه عام 1881م

تعود الأطماع الفرنسية في تونس الى عهد بعيد ففي عام 1270م قام الملك لويس التاسع حملة عسكرية على تونس كان مصيرها الفشل، وبعدها تمكنت فرنسا من فرض معاهدة عام 1685م على تونس تخولها أحقية الامتيازات على بقية الدول الأخرى لكن بعد الاحتلال الفرنسي للجزائر عام 1830 أولت فرنسا اهتماماً خاصاً لتونس التي عدتها امتداداً للجزائر من الجبهة الشرقية واخذت فرنسا تخلق الذرائع لاحتلال الأيالة التونسية. وكثرة المشاكل على الحدود الجزائرية التونسية التي أعطت الذريعة لفرنسا في حشد قواتها العسكرية للدخول الى أرض الأيالة وطلب الباي الحكومة الفرنسية لحل المشاكل ودياً, ومعاقبة المشاكسين من قبله, لكن الحكومة الفرنسية رفضت ذلك وأرسل حاكم تونس برقية الى حكومة اسطنبول طالباً منها التدخل لاحتواء المشكلة حيث كانت الايالة التونسية تابعة اسمياً للدولة العثمانية.

Study of Some Nonlinear Fluid Flows Between Stretching Disks

This dissertation emphasis on axi-symmetric flow of Newtonian fluid, rate type fluids and nanofluids between two infinite stretching disks. The modeling of said problems is done in cylindrical coordinates. Applied magnetic field, mixed convection, viscous dissipation, joule heating and heat source/sink are taken into account in various cases. Heat transfer, chemical and material composition analysis of flow between stretching disks have been analyzed under different boundary conditions; such as slip boundary conditions and convective boundary conditions. It is also important to mention that the second order slip and second order temperature jump is also studies on both disk surfaces with homogenous and heterogeneous reactions. The Brownian motion and thermophoresis effects are investigated in the presence of radiation effect for Maxwell and Oldroyd-B nanofluids. The mathematical modeling of problem statement results in partial differential equations, which further transformed to coupled nonlinear ordinary differential equations using similarity transformations. The reliability and flexibility of homotopy analysis method has encouraged us to find the solution of system of coupled nonlinear ordinary differential equations. The convergence of derived series solutions is ensured using ℏ-curves. The numerical values of skin friction, Nusselt number and Sherwood number are discussed through tables and graphs. The effects of other important parameters like Archimedes number, Eckert number, Prandtl number, Biot number, Schmidt number and Brownian motion parameters on velocity, pressure, temperature and concentration profiles are discussed and analyzed graphically