An integrated fertilization system of canola (Brassica napus L.) production under different crop rotations (original) (raw)
Related papers
2011
Cropping systems in farmland areas of Iran are characterized by continuous cultivation of crops with consumption of chemical fertilizers leading to serious soil erosion and fertility decline. Information regarding the simultaneous evaluation of crop rotation and fertilization on the canola traits is not available. Therefore, an experiment was conducted during 2007 -2010. Experimental designs were arranged in a split plot based on randomized complete block design with three replications. Main plots were consisted of three crop rotations and sub plots were consisted of six methods of fertilization. Results showed that the activities of all soil enzymes were generally higher in the organic manure (compost + farmyard manure) treatment. The highest grain nitrogen (34.2 mg/g), sulfur content (4.43 mg/g) and the lowest N/S were obtained in the green-manured rotation. The highest grain N (38.9 mg/g) was obtained in co application of chemical and organic manure treatment. Grain yield in green-manured rotation and co application of chemical and organic manure treatment were higher than other treatments. Canola-wheat-canola rotation had lower oil content and oil yield than those of other rotations. The highest percentage of oil was obtained from farmyard manure and compost application and the highest oil yield belonged to combined application of chemical and organic fertilizers treatment. Application of organic manure significantly increased unsaturated fatty acids.
Nitrogen (N) fertilizer plays a vital role in enhancing canola yield. To assess the influence of nitrogen fertilizer at different stages of plant growth, an experiment was conducted at Research Farm of Agricultural Research Center in Rasht, located in Northern Iran in 2008. The experiment was laid out as a randomized complete block design with three replications. Treatments consisted of two varieties of canola (V 1 : Hyola, V 2 : PF7045.91) and five different schedules of nitrogen fertilizer application. The nitrogen treatments comprised of application of a total of 300 kg nitrogen using five different schedules of application: N 1 (150 kg/ha at planting time and 150 kg/ha at flowering time), N 2 (100 kg/ha at planting time, 100 kg/ha after rosette stage and 100 kg/ha at flowering time), N 3 (150 kg/ha at planting time, 75 kg/ha 30 days after planting, 75 kg/ha at flowering time), N 4 (75 kg/ha at planting time, 150 kg/ha after rosette stage and 75 kg/ha at flowering time), N 5 (conventional schedule of nitrogen fertilizer in the region comprising of 75 kg/ ha at planting time, 75 kg/ha 30 days after planting, 75 kg/ha after rosette stage and 75 kg/ha at flowering time). Results showed that the highest seed yield (3597 kg/ha) of canola was obtained from variety PF7054.91 and the best programme of nitrogen fertilizer was N 4 where 75 kg N/ha was applied at the planting time, 150 kg N/ha after rosette growth stage and 75 N kg/ha of nitrogen at the flowering time. Production efficiency of canola crop can be enhanced in a crop rotation system in rice farms under agro-ecological conditions of Guilan, North of Iran.
The Role of Bio Fertilizer in Canola Growth, Yield and Stress Condition : A Review
The oil extracted from canola (Brassica napusL.) has high industrial and economic value, since it is used as edible oil and feedstock for biodiesel production. It is also the third most produced oilseed in the world. Canola has the lowest saturated fat content among vegetable oils and thus presents an increasing demand for diet-conscious consumers. Oilseed rape has a relatively high requirement of nitrogen where the content of this nutrient in seeds and plant tissues is greater than in most grain crops. 6 Nitrogen different levels and biofertilizers effects were studied on growth and yield of canola Canola represents its highest yield in proper and desirable soil conditions. However its growth, yield and oil yield can be reduced significantly by environmental stresses such as drought, salinity and water logging. Therefore, canola yield may reduce under saline soils. The use of Plant growth promoting rhizobacteria (PGPR) for reducing chemical inputs in agriculture is a potentially important and interesting issue for increasing international concern in food and environmental quality. It is necessary for developing strategies of integrated fertilization for crops to maximize production of crops and reducing the risk of pollution from chemical fertilizers. Therefore, the objectives of this study to evaluate the impact of bio-organic, chemical nitrogen on seed quality of canola.
African Journal of Biotechnology, 2011
This study describes the effects of fertilization and tillage methods on soil microbial community and canola traits. A field experiment was carried out in 2009 to 2010 growing season. Experiments were arranged in a split plot based on randomized complete block design with three replications. Main plots consisted of no tillage (T1), minimum tillage (T2) and conventional tillage (T3). Six strategies for obtaining the basal fertilizer requirement including (N1): farmyard manure; (N2): compost; (N3): chemical fertilizers; (N4): farmyard manure + compost; (N5): farmyard manure + compost + chemical fertilizers and (N6): control, were arranged in sub plots. Results show that the activities of all enzymes were generally higher in the N4 treatment than in the unfertilized and chemical fertilizer treatments. The phosphatase, catalase and urease activities in the N3 treatment were significantly lower than in the farm yard manure (FYM) and compost treatments (CT). The activity of all enzyme activity tended to be higher in the NT treatment. The highest leaf N, P and K containing grain and grain yield was obtained from N5 treatment. Applying CT system caused to a reduction in grain yield as compared with chisel plowing.
The dynamics of microbial biomass and mineral nitrogen (N) during two growth stages were compared in soils under different fertilization treatments. At stem elongation, the fertilizer system had more N in the mineral pools, whereas manure and integrated systems had more N in the microbial biomass, indicating shifts in N pools between the two systems. At the flowering stage, integrated (manure + fertilizer) and manure systems had more N in two pools, indicating release of plant-available N from the microbial biomass. The carbon (C) / N ratio of the microbial biomass was significantly greater in manure and integrated treatments than in fertilizer treatments. Soil mineral N was significantly positively correlated with seed yield at the stem elongation stage, whereas it was positively correlated with soil microbial biomass C at the flowering stage. Stepwise regressions revealed that seed yield was significantly associated with mineral N at stem elongation and microbial biomass N at the flowering stage
Effect of Different Bio Fertilizers on Growth and Yield of Canola (Brassica napus L) var RGS 003
Journal of Agricultural Science, 2013
Bio fertilizers effects were studied on growth and yield of canola in Sistan and Balochistan province. An experiment was conducted in a randomized complete block design with three replications. Treatments included bio-fertilizers at eight levels (not inoculation, phosphate bio-fertilizer (barvar2), Nitro Kara, Bio sulfur, phosphate bio-fertilizer (barvar2) +Nitro Kara, Nitro Kara+ Bio sulfur, phosphate bio-fertilizer (barvar2) + Bio sulfur and phosphate bio-fertilizer (barvar2) + Nitro Kara + Bio sulfur). The results showed that bio fertilizers had no significant effect on the seed number per siliques, number of siliques per plant, seed yield, 1000 seed weight, biological yield, seed of sodium and Plant height but significant different on seed of potassium. The combined use of bio fertilizers also was statistically superior to not inoculation treatment. However, the highest yield was got from Nitro Kara + Bio sulfur but no significant different with other treatments. It seems using of inoculation of Nitro Kara + Bio sulfur produced suitable yield compared to not inoculation (31% greater). Keywords: phosphate bio fertilizer (Barvar 2), nitro kara, bio sulfur This experiment was carried out in order to investigate effect of different bio fertilizers on yield of canola plants in Sistan and Balochistan province, Iran. The experimental design was randomized completely block design in three replications in Researches Station of university of Zabol during 2013, where the latitude The field experiment was www.ccsenet.org/jas
Turkish Journal of Agriculture - Food Science and Technology
It is necessary for developing strategies of integrated fertilization for crops to maximize production of crops and reducing the risk of pollution from chemical fertilizers. Therefore, the objectives of this study to evaluate the impact of bio-organic, chemical nitrogen on seed quality of canola. A study was conducted for two consecutive years (2005 to 2006) at the Farm of Faculty of Agriculture, Kafr El-Sheikh University, Egypt. Bio fertilizer (control and bio-fertilizer), compost (control, 6, 12 and 18 ton ha-1) and chemical nitrogen (control, 36, 72 and 108 kg N ha-1). The result indicated that, bio-fertilizer was significantly effects on protein % and iodine value except oil percent was decreased. On the other hand, the Maximum values oil and protein were recorded by using compost fertilizer at (18 ton ha-1). In respect to chemical fertilizer, adding nitrogen affected significantly on protein % and the maximum value was obtained at (108 N ha-1) while, oil percent and iodine valu...
Canola Traits and Some Soil Biological Indices in Response to Fertilizer and Tillage Management
2012
3 Abstract: This study describes the effects of fertilization and tillage methods on soil microbial community and canola traits. A field experiment was carried out in 2009-10 growing seasons. Experiments were arranged in a split plot based on randomized complete block design with three replications. Main plots consisted of no tillage (T1), minimum tillage (T2) and conventional tillage (T3). Six strategies for obtaining the basal fertilizer requirement including (N1): farmyard manure; (N2): compost; (N3): chemical fertilizers; (N4): farmyard manure + compost; (N5): farmyard manure + compost + chemical fertilizers and (N6): control were arranged in sub plots. Results showed that the activities of all enzymes were generally higher in the N4 treatment than in the unfertilized and chemical fertilizer treatments. The phosphatase, catalase and urease activities in the N3 treatment were significantly lower than in the FYM and compost treatments. The activity of all enzyme activity tended to...
Growth, yield, and yield components of canola as affected by nitrogen, sulfur, and boron application
Journal of Plant Nutrition and Soil Science, 2015
Developing efficient nutrient management regimes is a prerequisite for promoting canola (Brassica napus L.) as a viable cash crop in eastern Canada. Field experiments were conducted to investigate the growth, yield, and yield components of canola in response to various combinations of preplant and sidedress nitrogen (N) with soil-applied sulfur (S) and soil and foliar-applied boron (B). Canola yield and all its yield components were strongly correlated (r 2 = 0.99) with the amount of N applied, as was the above-ground biomass at 20% flowering and the leaf area index. Sidedress N was more efficiently utilized by the crop, leading to greater yields than preplant N application. On average, canola yields increased by 9.7 kg ha-1 for preplant N application and by 13.7 kg ha-1 for sidedress N application, for every kg N ha-1 applied, in 6 of the 10 site-years. Soil-applied S also increased canola yields by 3-31% in 7 of the 10 site-years, but had no effect on yield components. While there was no change in yield from soil-applied B, the foliar B application at early flowering increased yields up to 10%, indicating that canola plants absorb B efficiently through their leaves. In summary, canola yields were improved by fertilization with N (8 of 10 site-years), S (7 of 10 site-years) and B (4 of 10 site-years). Yield gains were also noted with split N-fertilizer application that involved sidedressing N between the rosette and early flowering stage. Following these fertilizer practices could improve the yield and quality of canola crop grown in rainfed humid regions similar to those in eastern Canada.