جستجوی مقالات مرتبط با کلیدواژه "oil" در نشریات گروه "زراعت"

Drought stress is one of the most important factors that reduce the yield of crops in arid and semi-arid regions, including the climatic conditions of Iran. The experiment was conducted as factorial based on completely randomized design with three replications in the research greenhouse of Ilam University in 2020. The experimental factors included irrigation at three levels (100, 60, and 30% of field capacity) and three accessions of camelina (Kermanshah, Sabzevar, and Shahrekord). The results showed that under the irrigation conditions of 30%, seed yield, biological yield, harvest index, plant height, number of capsules per plant, number of seeds per capsule, relative leaf water content, photosynthesis rate, transpiration rate, stomatal conductance and total chlorophyll respectively 69.4, 53.8, 33.9, 44.1, 72.9, 25.6, 43.8, 72.0, 62.9, 56.7, and 61.1% reduction compared to optimal irrigation they found There was no difference observed between the three populations investigated in different irrigation conditions in terms of the investigated traits. In addition, the results showed that the highest amount of camellia seed oil (39%) was obtained in Kermanshah massif under favorable irrigation conditions; which decreased by 40.8% under severe stress of dehydration. In general, it is possible to use camelina Kermanshah under conditions of moderate water stress for oil production.

To compare tolerance and sensitivity indices of sesame genotypes to water stress in Ahvaz (south-west of Iran) conditions, an experiment was conducted in Research Farm of Agricultural Sciences and Natural Resources University of Khuzestan, south-west of Iran, in summer 2018. The experimental design was split plot based on a randomized complete block design with four replicates. Experimental factors were three levels of irrigation (I1; fully irrigated, I2: changing altered irrigated and I3: fixed altered irrigated) in main plots and six sesame genotypes in subplots. The yield of studied genotypes showed a significant difference in different levels of irrigation. Genotype Shushtar produced the highest grain and oil yield and showed good performance in both normal and low irrigation conditions. The examined genotypes had significant differences in terms of Stress Sensitivity index (SSI), Tolerance Index (TI), Productivity Mean (PM), Harmonic Mean (HM), Yield Stability Index (YSI), Geometric Productivity Mean (GPM), Stress Tolerance Index (STI), Stress Damage Index (SDI), Modified Stress Tolerance for appropriate conditions (MSTI1), Modified Stress Tolerance for non-appropriate conditions (MSTI2), and Yield Reduction Index (YRI).  In general, the best indicator for evaluation of tolerance and susceptibility of sesame genotypes was stress tolerance index (STI). The most tolerant and sensitive genotypes were Shushtar and Halil genotypes, respectively.

Safflower (Carthamus tinctorius L.) is one of the most important oilseed crops in the world, which has gained great importance in Iran due to its high tolerance to drought and salinity. Two important factors in the development of safflower cultivation are the increase of oil yield and early maturity. Considering that the most important step in plant breeding is creating diversity and using this diversity in selection, in this experiment, a large number of safflower genotypes were evaluated in terms of important quantitative and qualitative traits.

In this study, 160 local and imported genotypes were evaluated in the form of an augmented design with three controls (introduced cultivars Goldasht, Padideh and Golmehr) in five replicates as winter cultivation, and traits such as flowering date, Plant height, number of branches, spininess, seed yield, oil percentage, 1000 seed weight, seed protein content and fatty acid profile including percentage of palmitic, stearic, oleic, linoleic and linolenic acids were investigated.

The results showed the existence of a range of 23 days for flowering date, a range of 95 cm in plant height and a range of 16% in the amount of seed oil. Also, a large variation was observed in seed yield and other evaluated traits. The results showed that the amount of seed protein in some tested genotypes was up to 20%, which is very important in terms of the nutritional value of meal. Examining the fatty acid profile with the help of GC showed that 24 genotypes had oleic acid content higher than 55%. The results of partial correlation showed that the genotypes with the highest percentage of oleic and palmitic acid usually have the highest percentage of oil and there is a strong negative correlation between oleic and linoleic, so that the decrease or increase of one is associated with the increase or decrease of the other. High oil percentage was observed only in thorny genotypes and no significant correlation was observed between oil percentage and seed protein content, so that genotypes with high oil percentage and high seed protein percentage were observed at the same time.

Overall, the results of this study showed that there is a great diversity between the collected genotypes, which can be used in breeding programs.

Seed yield in soybean is a complex trait and is influenced by multiple genetic and environmental factors. Safflower is one of the oilseeds adapted to a wide range of soil conditions, but micronutrients deficiencies cause a decrease in its grain yield and quality. Hence, an experiment was conducted as a split factorial based on randomized complete block design with three replications at Agricultural and Natural Resources Research Center of Arak, Iran in 2019. Three tillage methods (including no tillage, low tillage and conventional tillage) were considered as the main plots and fertilizer treatments (including 1- Control, 2- Zinc, 3- Iron, 4- Sulfur, 5- Zinc + Iron, 6-Zinc + Sulfur, 7- Iron + Sulfur, and 8- Iron + Sulfur + Zinc) were considered as sub-plots. Results showed that there were significant differences between the fertilizer treatments in terms of seed yield, flower yield, seed weight per head, number of heads, number of seeds per head, percentage of seed protein and seed oil. In the treatment of tillage methods, thousand seed weight and linoleic fatty acid had significant differences. Interaction effects of soil tillage methods X fertilizer were significant on number of heads and linolenic acid. Fertilizer treatment of iron + sulfur + zinc had the highest seed yield (i.e. 1391 kg ha-1), flower yield (i.e. 183.7 kg ha-1), 1000 seed weight (i.e. 45.8 g), seed weight per head (i.e. 1.27 g), number of heads (i.e. 7.9), protein percentage (i.e. 21.2%) and seed oil percentage (i.e. 26.5). Results of this research showed that application of micronutrient elements by increasing the yield components, particularly 1000-seed weight, number of heads, and the weight of seeds per head led to increases in seed yield, oil percentage and protein percentage of safflower seeds. Though, tillage methods had no significant effect on safflower seed yield. According to the results of this experiment the use of zinc, sulfur, and iron fertilizers along with the method of low tillage can help to increase the grain yield and quality of rapeseed.

Among various non-biological stresses, drought stress is the most important factor that has limited production in the agricultural sector of the country (Akhzari and Pessarakli, 2016). Today, the supply of oilseeds for the extraction of vegetable oils needed for various industrial, edible, medicinal and cosmetic uses is one of the basic needs of the current population growth (Beynam, 2015). Balangu (Lallemantia iberica L.) is an annual, herbaceous and drought-resistant plant belonging to the mint family (Lamiaceae). With medicinal-oil properties, it is considered a multi-purpose plant in agriculture (Hendawy et al., 2015). In order to check and predict the phenological stages of the planted plants in an area, the relationship between the phenological stages and the thermal factor should be considered. For this purpose, thermal units of growth degree days (GDD) are used to check the amount of heat needed to pass each growth stage of plants (Kumari et al., 2020). In plants under drought stress, where the absorption of nutrients through the root faces a problem due to the decrease in soil water volume, the absorption of micronutrients such as iron and zinc can be effective through foliar spraying. (Rafique et al., 2015). In the conditions of lack of water resources, like what is happening in our country, it is necessary to change the agricultural pattern towards planting plants adapted to dry land, as well as ways to increase yield per unit area. Therefore, the purpose of this research was to investigate the development of Balangu planting and the role of foliar application of iron and zinc micronutrients on phenology and the adjustment of stress effects.

This research was conducted in the research farm of Razi University of Agriculture and Natural Resources, Kermanshah during two consecutive years (2017-2018 and 2018-2019) as a split-plot-factorial experiment in the form of a basic randomized complete block design with three replications. The experimental treatments include: irrigation (Water deficit after flowering and Normal) in the main plots, foliar spray factors (zero, four and eight per thousand concentrations of iron and zinc sulfate) and foliar application time (at the beginning of the vegetative and reproductive growth stage) were factorially placed in sub-plots. The seeds (native population of Songhor region of Kermanshah province) were planted manually at a depth of two centimeters and with a density of 400 plants per square meter in a row at the first appropriate time in late March of 2017 and 2018. Application of nitrogen, phosphorus and potash fertilizers was based on need. Dehydration stress was applied by stopping irrigation from the time of full flowering (opening of 50% of flowers).

The results showed that, with the application of water stress, the seed yield and oil yield decreased by 24% and 17%, respectively, and the oil percentage increased by 8% compared to the treatment without water stress. Also, water deficit stress reduced the number of days and heat requirement to maturity by 10 days and 275 growth days degree, respectively. The greatest increase in oil yield compared to the treatment without foliar spraying (control) was related to the 4 and 8 per thousand zinc foliar treatments in reproductive stage and under stress conditions, which increased these traits from 339 and 283 respectively in conditions Lack of stress and water deficit stress increased to 539 and 513 kg/ha. The greatest effect of iron and zinc foliar application treatments on increasing plant height and the number of days and heat requirement to maturity stage was related to 4 and 8 per thousand iron and zinc foliar application in the vegetative growth stage.

In the present study, it can be concluded that the Balangu having adaptability, suitable production, relatively short growth period and matching the length of the growth period with the rainfall of the study area, and it can be considered as a common plant for rotation in this region. Foliar application of iron and zinc micronutrient elements should be used by farmers to moderate the effects of water deficit stress, taking into account its small and economical amounts.

Oilseeds are one of the most important food reserves in the world and oil production from oilseeds is very important. In order to investigate the effects of sulfur fertilizer (without fertilizer (control), sulfur chemical fertilizer, sulfur-fertile biofertilizer containing thiobacillus and their combined application) on yield, yield components and seed oil of three camelina masses (Kermanshah, Sabzevar and Shahrekord), an experiment was performed as a factorial design based on randomized complete block design with three replications in the research farm of Ilam University in 2020-2021. The results of analysis of variance showed that the combined effects of sulfur + biosulfur on the number of capsules per plant and the number of seeds per capsule were significant at the level of 1% probability. Also, the weight of 1000 camelina seeds was affected by the interactions of sulfur and the type of mass. Application of sulfur fertilizers increased the amount of photosynthetic pigments in camelina leaves. The highest plant height, number of stem per plant and stem diameter were obtained by using sulfur+biosulfur fertilizers. The results also showed that the highest grain yield (2394 kg/ha) of camelina was obtained by using sulfur+biosulfur; which was 8.32% more than not consuming sulfur. The highest oil yield (5.916 kg/ha) was observed with the combined application of sulfur+biosulfur fertilizers and sulfur and biosulfur fertilizers alone were in the second place in terms of grain yield. Non-application of sulfur fertilizer (4.576 kg/ha) had the lowest grain yield, which indicates the effect of sulfur fertilizers on yield indices and camelina oil.

Canola (Brassica napus L.) is one of the important oil plants in temperate regions, which has great value for humans and livestock as a producer of oil and meal. Phosphorus plays an important role in improving the quality and quantity of oilseeds, including rapeseed. Sufficient sources of phosphate are needed by the plant for earlier development and rooting and more foliage production in a short period of time. Considering the stabilization of phosphorus in the soil, the increase in the price of chemical fertilizers and environmental pollution, the use of biological fertilizers, especially the types of phosphorus-dissolving bacteria, play an important role in solving these problems. Therefore, the objective of this research was to investigate the role of phosphorus biofertilizer containing Pseudomonas fluorescens bacteria in improving the quantitative and qualitative yield of canola under the influence of chemical phosphorus fertilizer management.

A factorial field experiment was conducted based on a randomized complete block design with three replications at the research station of the Faculty of Agriculture of Yasouj University located in Deshtrum region in 2019. The first factor was triple superphosphate fertilizer at 6 levels (zero, 25, 50, 75, 100 and 125 kg/ha of pure phosphorus) and the second factor included phosphorus biological fertilizer containing Pseudomonas fluorescens bacteria at two levels (application and non-application). The traits of yield components, seed and biological yield, and seed oil and protein were evaluated. The traits of yield components, seed and biological yield, and seed oil and protein were evaluated. Yield components, seed and biological yield, and seed oil and protein were evaluated.

The results showed that phosphorus and bacteria chemical fertilizers had a significant effect on all investigated traits. The interaction of phosphorus chemical fertilizer and bacteria was also significant on all investigated traits except harvest index. The highest plant height (124.93 cm), number of lateral branches (4), leaf chlorophyll index (74.20), seed yield (5887 kg/ha) and biological yield (19411.4 kg/ha) were obtained in the treatment of 125 kg/ha of phosphorus and bacterial application. Also, with the consumption of 125 kg/ha of phosphorus fertilizer and the use of bacteria, the highest percentage and oil yield was obtained. Also, the results showed that there is no significant difference between the treatment of application of 50 kg of phosphorus fertilizer + bacteria and the treatments of application of higher levels of phosphorus fertilizer (75, 100 and 125 kg) alone.

Considering the superiority of 125 kg of phosphorus fertilizer along with bacteria in terms of grain yield, oil percentage and oil yield, it seems that these amounts of phosphorus fertilizer as well as the use of bacteria can be used to achieve proper yield in the experimental and also similar areas. Also, the results show that using bacteria can reduce the consumption of phosphorus chemical fertilizers.

In order to develop winter cultivation and improve crop rotation in the region, an experiment has been conducted to evaluate the effects of sowing date on sunflower cultivars seed yield. It is a split-plot based on completed randomized blocks design with four replications in Safiabad Agricultural and Natural Resources Research and Education Center of Dezful and has taken place during two years (2015-2016). The main plots are consisted of four sowing date levels (23rd Jan, 6th Feb, 20th Feb, and 6th Mar), while the sub plots include nine levels of cultivars (Azargol, Armavirski, Barzegar, Progress, Record, Shams, Farokh, Ghasem, and Gabor). Delay in the sowing date has decreased growth period length and plant height, with the greatest number of seeds per capitulum (684.17) belonging to record cultivar on the first sowing date in the first year and the maximum one (767.47) occurring again to this cultivar on the third sowing date in the second year. The maximum seed yield in the first (3850 kg.ha-1) and second (4088 kg.ha-1) year belong to the first sowing date (23rd Jan) and Azargol cultivar. Based on the results, Azargol cultivar have had the lowest rank, being considered as the cultivar with the highest seed yield on all sowing dates, followed by Record and Armavirski, in the second and third placed, respectively. In terms of stability, considering that Farrokh cultivar also has had the lowest standard deviation, it has been selected as the most stable cultivar.

One of the pillars of a sustainable agricultural system is the use of organic fertilizers to provide the nutrients needed by the plant with the aim of eliminating or significantly reducing the consumption of chemical inputs (Darzi et al., 2011). Organic fertilizer includes vermicompost and products from the activity of phosphate-solubilizing microorganisms and stabilizers of nitrogen or other nutrients that are active in the soil (Anwar et al., 2005). Sesame is an old and important oilseed crop that is usually grown on small farmers' tropical and subtropical farms (Weiss et al., 2000). This study was conducted for investigating the effect of different levels of nitrogen fertilizer, vermicompost and their combined application on sesame plant of single branch cultivar in Tarom region of Zanjan province.

Experiment in a complete randomized block design was carried out with three replications in Tarom, Zanjan province, Iran during cropping seasons of 2016-2017. Treatments consisted of four levels of nitrogen fertilizer (0, 30, 60 and 90 kg Nitrogen ha-1) and integrated nitrogen of chemical and organic (15 kg N ha-1 + 2.5 ton ha-1 vermicompost, 30 kg N ha-1 + 5 ton ha-1 vermicompost and 45 kg N ha-1 + 7.5 ton ha-1 vermicompost) and vermicompost (5, 10 and 15 ton ha-1) were used.

Results showed that use of nitrogen fertilizer, vermicompost and combination nitrogen fertilizer and vermicompost had significant effect on seed yield and yield components of sesame. So that, Maximum plant height, number of capsule in plant, number of seed.plant-1, 1000-seed weight and seed yield (3087.87) were obtained 45 kg N ha-1 + 7.5 ton ha-1 . Maximum biological yield (8360 kg ha-1) was obtained using the treatment 45 kg N ha-1 +7.5 ton ha-1 vermicompost. Also, seed oil percentage was not affected by any of the treatments; As a result, Maximum oil yield (1530.36 kg ha-1) was obtained using treatment 30 kg N ha-1 + 5 ton ha-1.

This experiment was carried out in split plots based on randomized complete block design with three replications during 2015-2016 and 2016-2017 cropping years in Khuzestan province. The main factor, consisted as water shortage stress with four levels of irrigation after depletion of 45, 60, 75 and 90% of plant usable water was optimal irrigation, mild stress, severe stress and very severe stress, respectively. The levels of 100% chemical fertilizer, 75% and 50% combination of chemical fertilizer with 100% nitroxin and plant density at three levels of 57, 71 and 95 thousand plants per hectare were as sub-factors. The results showed that the interaction of water shortage stress, combination of nitrogen biochemical and chemical fertilizer and plant density had a significant effect on grain yield, 1000-grain weight, number of seeds per head, harvest index and biological yield. The highest seed yield was obtained from the optimal irrigation treatment by combining 75% of chemical and biological fertilizers and a density of 95,000 plants per hectare, which showed a 75% increase compared to the very severe moisture stress treatment with 75% of chemical and biological fertilizers and a density of 57,000 plants per hectare. The interaction of moisture stress and density and fertilizers on oil percentage and leaf area index was significant. In general, the use of nitrogen from both chemical and biological sources at a density of 95,000 plants per hectare may reduce the effects of moisture stress on the sunflower plant in the experimental condition.

The Food and Drug Administration has classified pot marigold as a GRAS (generally recognized as safe) substance. Foliar nutrition acts as an effective tool for nutrient management in plants, and foliar nutrition can be used successfully to address wide spread nutrient deficiencies, especially in critical plant growth stages. Plants are able to absorb amino acids, amides and many nitrogen compounds through their roots or leaves. Also, plant symbiosis with mycorrhizal fungi causes water absorption, nutrient uptake and growth under environmental stress. These fungi are able to symbiosis with the roots of most terrestrial plants.

In order to investigate the effects of foliar application of amino acids and mycorrhizal fungi symbiosis on quantitative and qualitative characteristics of Calendula officinalis L., a factorial layout has been conducted, based on a randomized complete block design with three replications at the research farm of Islamic Azad University, Takestan Branch during 2017-2018 and 2018-2019 growth seasons. Experimental factors included three species of mycorrhiza fungi (Control, Glomus mosseae, G. etunicatum and G. intraradices) and Soren amino acid levels (This commercial compound contains a variety of essential amino acids for the plant) included no foliar application and foliar application in two stages of stem and flowering. Land preparation was performed before planting. According to the experimental map, experimental plots were planted in six rows at a distance of 50 cm and a length of six meters and the distance between plants on the row was 20 cm. Before planting, based on soil test results, ammonium phosphate fertilizer (150 kg.ha-1) and potassium sulfate fertilizer (100 kg. ha-1) were used. Both fertilizers were mixed with soil along with one third of the nitrogen mountain from the urea source at the beginning of planting. Urea fertilizer at the rate of 100 kg.ha-1 was applied and the remaining two thirds were applied as a road after the final thinning and before flowering.

The results showed that the application of amino acid and mycorrhizal fungus of G. mosseae species had a so significant increase in the percentage of root colonization compared to the treatment of not using mycorrhizal fungus and the application of amino acid. Foliar application of amino acid increased by 6% and use of mycorrhiza, G. mosseae in pot marigold, increased chlorophyll index treatment by 33%. The results also showed a 25% and 70% increase in oil percent and oil yield due to foliar application of amino acid and use of mycorrhiza, G. mosseae compared to non-use, foliar application of amino acid and mycorrhiza. The highest essential oil yield was obtained from G. mosseae treatment with a value of 7.74 kg.ha-1. The results of analysis of variance showed that the interaction effect of foliar application of amino acid and mycorrhiza on the percentage and oil yield was significant at the level of five percent. The results showed a 25% and 70% increase in oil yield and yield due to foliar application of amino acid and mycorrhiza, respectively, of G. mosseae compared to non-foliar application of amino acid and mycorrhiza. Inoculation with G. mosseae and application of amino acid had the highest seed yield and this treatment showed a 24% increase compared to the control with the same mycorrhiza but without the use of amino acid.

Based on this study results, it can be said that inoculation of pot marigold with mycorrhizal fungus, especially G. mosseae species, it can be used to absorb nutrients for better growth of this plant, and foliar application of amino acids improves plant growth and development by providing nitrogen to the plant.

To study the effect of manure and treated municipal wastewater of Zabol, Iran, on quantitative and qualitative characteristics of rapeseed, an experiment was conducted under farm condition in 2016-2017. Experiment was performed as a split-plot based on a randomized complete block design with three replications. Experimental treatments were included irrigation at two levels, I1: irrigation with normal water, and I2: irrigation with treated municipal wastewater as the main factors and type of manures at four levels, M1: no fertilizer application, M2: cow manure (40 tons per hectare), M3: sheep manure (30 tons per hectare) and M4: poultry manure (20 tons per hectare) as sub-factors. Results showed that irrigation with treated municipal wastewater led to 10.74% increase in plant height, 31.48% in the number of sub-branches and 9.70% in the number of capsules per plant. Among different type of manures, application of poultry manure compared to sheep and cow manure increased 12.41% and 14.00% of plant height, 21.90% and 22.20% of the number of sub-branches and 5.92% and 7.66% the number of pods per plant. On the other hand, in irrigation with treated municipal wastewater treatments, it was observed that the highest yields of fresh and dry forages and grain and oil yields were 10249, 992, 2769 and 894 kg/ha in average that were obtained in poultry manure treatment. Study of correlation coefficient indicated that rapeseed seed yield correlated positively and significantly with most of the measured factors, and the highest correlation was between seed andoil yields. Overall, the results showed that irrigation with treated municipal wastewater along with poultry manure were the best treatment for higher fodder, grain and rapeseed oil yields, but to recommend it to farmers in the region, it is recommended to perform economic justification plan and then it can be recommended to the farmers of the region as an appropriate pattern.

Rapeseed duo to having genotypes spring and autumn and adaptation to weather conditions as the point hope for provide edible oil of country is the required. Two separate experiments were set up as split-plot in a RCBD design with three replications in two fall and winter seasons during two years (2014-2015 and 2015-2016) at the research field of Seed and Plant Improvement Institute to investigate the effect of sowing season and date on the quantitative and qualitative yields of rapeseed genotypes in Karaj, Iran. In this study, the main plots were sowing dates of 7, 17, and 27 October in fall sowing and sowing dates of 9 and 19 February, and 1 March in winter sowing and sub-plots consisted of genotypes of RGS003, Dalgan, Zabol10, Hyola401, and Hyola4815. Grain and oil yields of rapeseed genotypes were 4330 and 1840 kg ha-1 in fall sowing, respectively, while these traits were decreased by 43.3 and 46.6% when rapeseed genotypes were planted in winter season, respectively. The highest grain and oil yields (5033 and 2202 kg ha-1) belonged to 7 October in fall sowing, while 9 February had the highest grain and oil yields (2996 and 1248 kg ha-1) in winter sowing. In general, the Dalgan genotype is recommended for cultivation due to suitable agronomic traits such as number of silique per plant, number of grain per silique, silique length, 1000-grain weight, as well as high grain and oil yields in cold temperate regions with arid and semi-arid climates such as Karaj, Iran.

Intercropping is a possible pathway for sustainable increases in crop yields (10). Researchers have reported that intercropping system with legumes led to maximum maize gain (24) and biological yield (4). Ghasemi et al. (2011) reported that grain yield in maize was the highest when the combination of chemical and bio-fertilizers were used (8).

This experiment was performed as factorial arrangement based on randomized complete block design in 2017 and 2018 cropping deasons with three replications in Rasht, Iran. Five rate of phosphorus fertilizer (zero, 50, 100 kg/ha as super phosphate triple, 50 kg/ha as super phosphate triple + 200 g phosphate barvar2 and 100 kg/ha as super phosphate triple + 200 g of phosphate barvar2) and corn and groundnut sol cropping, and mixed cultivation of one row of corn + one row of peanuts (1: 1), two rows of corn + one row of peanut (1: 2), one row of corn + two rows of peanut (2: 1) comprised experimental treatments.

In this experiment, phosphorus fertilizer × intercropping system effect on all measured characteristics was significant at 5 % probability level. The greatest grain yield (2360 kg/ha), oil yield (1182 kg/ha), grain protein percentage (27.70 %), protein yield (591 kg/ha) and palmitic acid (10.58 %) were obtained in response to the application of 100 kg/ha super phosphate triple along with 200 g phosphate barvar2 bio-fertilizer under groundnut sol cropping system. The greatest grain oil percentage (53.45 %) and oleic acid (66.63 %) as the most important unsaturated fatty acid in groundnut oil were obtained in response to the application of 100 kg/ha phosphorus fertilizer as super phosphate triple, under groundnut-corn intercropping system with the ratio of 1:2 planting rows. But, the highest rate of linoleic acid (32.17 %) was observed in groundnut-corn intercropping system with the ratio of 1:1 planting rows as affected by the application of 100 kg/ha phosphorus fertilizer as super phosphate triple plus 200 g phosphate barvar2 bio-fertilizer.

Results showed that the combined application of chemical phosphorus and bio-fertilizers enhanced groundnut grain yield that could causes by the improvement of yield components, enhancement of plant growth and nutrients absorption and increment of photosynthesis in groundnut plants. Apart application of chemical phosphorus fertilizer increased oleic acid synthesis and quality of groundnut oil. The application of chemical phosphorus fertilizer and groundnut-corn intercropping system with the ratio of 1:2 improved groundnut oil quality. But, integrated application of chemical phosphorus (super phosphate triple) plus phosphate barvar2 bio-fertilizer enhanced quantitative yield of groundnut. In this experiment, groundnut-corn intercropping system with the ratio of 1:2 and integrated application of chemical phosphorus plus phosphate barvar2 bio-fertilizer could be recommendable to enhance grain yield of groundnut per unit area.