جستجوی مقالات مرتبط با کلیدواژه "بادام زمینی" در نشریات گروه "منابع طبیعی"

This research aims to explore the energy usage and environmental impact of cultivating soybean and peanut, with a specific focus on a case study. The cultivation of these crops is crucial for agricultural production, and understanding their energy use and potential damage is essential for sustainable farming. The results of this study will be valuable for farmers, policymakers, and researchers working towards sustainable agricultural production. The study reveals that soybean production in Ardabil province of total energy was 43170.20 MJ ha-1, also, output energy was 40417.28 MJ ha-1, while peanut production requires 28677.36 MJ ha-1 of total energy and produces 28677.36 MJ ha-1 of output energy. The results of the Life Cycle Assessment (LCA) show that emissions on farms are closely related to the inputs used in soybean and peanut production. Diesel fuel and chemical fertilizers are the main sources of emissions in both systems, with soybean farming showing higher levels of diesel fuel pollutants due to reduced usage compared to peanuts. The distribution of emissions from different sources in soybean and peanut production is highlighted in the study. Both methods of production have a significant impact on human health, with soybean responsible for 70% of emissions and peanuts contributing 65%. Diesel fuel and nitrogen fertilizer have the most significant environmental impact, accounting for over 50% of the overall impact. Proper management of nitrogen fertilizer is essential for maximizing crop growth and yield, making it a top priority for researchers and farmers.

Seed deterioration is an important factor in reducing of physiological seed quality that it increased the severity of damage in adverse environmental conditions. The effects of hydrogen peroxide to improve physiological and antioxidant enzyme activities in aged groundnut seeds under drought stress were studied. A factorial experiment based on completely randomized design with three replications was done. Priming of different concentrations of hydrogen peroxide (0, 50, 100 and 150 µM) under 0, -0.4, -0.6 and -0.8MPa drought stress levels were evaluated. The results showed that seed priming with hydrogen peroxide in different drought levels increased some traits such as germination percentage, germination rate, vigour index, plumule and radicle length, soluble carbohydrates and protein contents and antioxidant enzymes activities (catalase, ascorbate peroxidase and superoxide dismutase). While it decreased mean germination time, electrical conductivity and malondialdehyde content in comparison to nonprime seeds. So seed priming with 50 and 100 µM of hydrogen peroxide in -0.8MPa level increased germination rate, vigor index , soluble carbohydrates and proteins, respectively by 27.89, 93.24, 71.42, 46.12, 27.06, 76.73, 30.26 and 51.04% compared to nonprimed seeds. Also, it increased activity of catalase, superoxide dismutase and ascorbate peroxidase, respectively by 26.37, 8.79, 39.07, 15.43, 5.28 and 21.51% compared to non-primed seeds. Therefore, the use of 50 mM hydrogen peroxide to reduce the negative effects caused by deterioration in drought stress is recommended.

To study the effect of production region and seed weight on some characteristics related with germinability and seedling vigour of peanut seeds, a research was performed in three peanut fields in Astaneh Ashrafieh and agronomy laboratory of Rasht branch Islamic Azad University during 2010 to 2012. This research was carried out using the standard germination test, cold and accelerated aging. For all tests a factorial experiment with a randomized complete block design in 3 replications was used. First factor was seed production region in 3 levels (Noghredeh, Amshal and Bandar-Kiyashahr) and second factor was seed weight in 3 levels [heavy (seeds heavier than 1 g), medium (seeds between 0.8 and 0.1 g) and light (seeds lighter than 0.8 g)]. The studied characteristics were including: final germination percentage, seedling vigour, radicle dry weight, hypocotyl dry weight, plumule dry weight, cotyledons dry weight and seedling dry weight. Results indicated that effect of region on the final germination percentage, seedling vigour and radicle dry weight were significant in all tests. Peanut seed weights also had a significant effect on radicle dry weight, hypocotyl dry weight, plumule dry weight, cotyledons dry weight and seedling dry weight in all tests.  Interaction of the region and seed weight on the seedling vigour of peanut seeds was significant in all tests. In accelerated ageing test, this interaction was significant on all the studied characteristics except for cotyledons dry weight. Mean comparison of studied characteristics also indicated that the greatest amount of studied parameters was observed from heavier seeds of Amshal region. The maximum germination percentage was detected in seeds produced in Amshal region with average of 86.67%. Also, maximum seedling vigour was achieved in heavy seeds produced in Amshal region with an average 54.24 (standard germination).