Soybean Seed Enrichment with Cobalt and Molybdenum as an Alternative to Conventional Seed Treatment (original) (raw)
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Revista Facultad Nacional de Agronomía Medellín
Nitrogen is the element most demanded by the soybean crop, and the biological fixation of atmospheric nitrogen is the main means to supply it. In contrast, micronutrients and chemical treatments applied on seeds together with the inoculant can alter the phenomenon of biological fixation of atmospheric nitrogen. This work aimed to evaluate the effect of chemical products, micronutrients, and nitrogen fertilization on the nodulation, development, and yield of soybean. The experiment was developed in a field and a greenhouse in the municipality of Toledo, Brazil. A randomized block with four repetitions was used as an experimental design. This design had eight treatments, namely: T1 - Control (seeds treated with insecticide); T2 - Seeds treated with insecticides and inoculated with Bradyrhizobium; T3 - Untreated seeds inoculated with Bradyrhizobium; T4 Seeds treated with insecticides and cobalt-molybdenum (CoMo), inoculated with Bradyrhizobium; T5 - Seeds with CoMo inoculated with Bra...
2016
The three-year study was conducted on a calcareous chernozem experimental plot of the Institute of Field and Vegetable Crops. The experimental field trial was designed as corn – soybean – wheat crop rotation and performed in four replications. The aim of this study was to determine the effects of soybean seed inoculation with microbiological fertilizer, seed treatment with cobalt and molybdenum, as well as the effect of preceding maize crop fertilization with different dosages of nitrogen, on soybean yield and its protein and oil contents. This would allow defining optimal seed treatment that would enable production of high and stable yield of quality soybeans with the rationalization of the use of mineral nitrogen fertilizers. The application of the largest dose of 250 kg N ha -1 was responsible for significantly (by 12.11%) higher yields compared with the control. Grain yield was not affected by the application of cobalt and molybdenum. No significant yield increase was found when...
Cobalt and molybdenum concentrated suspension for soybean seed treatment
Revista Brasileira de Ciência do Solo, 2009
The concentrated suspension (CS), the basis of Mo trioxide, allows high Mo concentrations and is therefore a technical advance for seed treatment, since it allows the recommendation of the Mo at lower dosage than with the liquid solution formulations (LS). The purpose of this research was to evaluate the efficiency and doses of fertilizer with Mo and Co in concentrated suspension in comparison with liquid solution as well as fertilizers associated with phytohormones, applied in seed treatments, and their effect on soybean yield. Two experiments were carried out in the growing seasons of 2004/2005 and 2005/2006 at the Universidade Federal de Uberlandia (UFU).The first was conducted in an experimental area on the Fazenda Capim Branco, with six treatments and four replications: (1) Mo and Co (CS) -22 g ha -1 + 1.08 g ha -1 ; (2) Mo and Co (CS) -22 g ha -1 + + 1.08 g ha -1 + phytohormone -200 mL ha -1 ; 3) Mo and Co (LS), 20.7 g ha -1 + 4.13 g ha -1 ; 4) Mo and Co (LS), 20.7 g ha -1 + 4.13 g ha -1 + phytohormone -200 mL ha -1 ; (5) + control phytohormone-200 mL ha -1 ; and (6) control (free of Mo and Co in the seed treatment). The phytohormone consisted of: auxin (11 mg L -1 ) and cytokynin (0.031 mg L -1 ). The soybean cultivar Monsoy 8004 was used and a fertilization of 400 kg ha -1 of 02-20-20 NPK fertilizer was applied at sowing. Based on the results of the first experiment, the second was conducted on the Fazenda Floresta do Lobo, in Uberlândia, MG, evaluated in a randomized block design with nine treatments and four replications. The treatments consisted of Mo and Co (g ha -1 ) doses applied to soybean seeds, as CS formulation (15, 25, 35, 45, 60 and 0.74; 1.23; 1.72; 2.21; 2.95) and LS-(15; 20; 25 and 3.18; 4.25; 5.31), respectively, and the control (free of Mo and Co in the seed treatment). The variety Monarch was used, fertilized Termos de indexação: Glycine max, micronutrientes, tecnologia de fertilizantes, nutrição.
Semina: Ciências Agrárias, 2018
Molybdenum (Mo) is a micronutrient that plays a fundamental role in the assimilation of nitrogen (N) in plants, and top-dressing N fertilization associated with different forms of molybdenum application can increase the yield and physiological potential of wheat seeds. The objective of this study was to evaluate the yield and physiological potential of wheat seeds treated with different forms of Mo application associated with N fertilization. The experiment was performed using the wheat cultivar CD150 in randomized blocks in split plots, with four replicates. Plots were evaluated for four forms of Mo application: 0 g ha-1 of Mo, seed treatment with 40 g ha-1 of Mo, foliar treatment with 40 g ha-1 of Mo, and seed + foliar treatment each at 20 g ha-1. In the subplots, four N rates (0, 30, 60, and 90 kg ha-1 N) were applied at the start of the tillering phase. We evaluated the following parameters: seed yield, mass of one thousand seeds, germination, first germination count, seedling r...
African Journal of Biotechnology, 2012
Effect of nitrogen (N) fertilizer and foliar-applied iron (Fe) fertilizer at various reproductive stages on yield, yield component and chemical composition of soybean (Glycine max L. Merr.) seed Nutritional management is an important factor in the success of crop production. However, research on the effects of nitrogen (N) and iron (Fe) application on soybean yield is limited. In order to study the effects of N and Fe application at various reproductive stages on grain yield and quality of soybean seed, an experiment was conducted using a factorial arrangement based on randomized complete block design with three replications at the research farm of Kurdistan University in 2009. The experimental treatments consisted of three different levels of N fertilizer application as follows: 0, 50 and 100 kg N ha -1
Acta Scientiarum. Agronomy, 2016
We evaluated the effects of split molybdenum (Mo) application at the reproductive stage of the common bean on seed Mo content (SMoC) and seed quality in two trials in the Zona da Mata region, Minas Gerais. Plants were sprayed with 100 or 600 g Mo ha-1 at the V4 stage. The higher dose was also split into 100(V4)+500(R5), 100(V4)+500(R7), 100(V4)+250(R5)+250(R7), and 100(V4)+150(R5)+350(R7). SMoC from plants sprayed with 600 g (five treatments) was 3.7-or 62-fold higher than those sprayed with 100 g, with seeds from the former treatments exhibiting slightly poorer quality. Application of 100 g at V4 + 500 g at the reproductive stage (four treatments) increased SMoC 1.6-or 2.7-fold compared with SMoC from plants sprayed with 600 g at V4. Split application of 500 g with two sprays increased SMoC by 11% (p = 0.257) or 16% (p = 0.013) compared with one spray of 500 g. SMoC can be higher with Mo applied at R7 (pod formation) instead of at R5 (pre-flowering), without impairing seed quality. Thus, split Mo application between the R5 and R7 stages of the common bean saves molybdic fertilizer to produce Morich seeds, with only a slight decrease in seed quality.
Response of Faba Bean (Vicia faba L.) to Cobalt Amendments and Nitrogen Fertilization
Two field experiments were conducted in the winter growing season in 2008 and 2009 on faba bean (Vicia faba L. var. 'Nubaria 3') at Nubaria Agricultural Station, National Research Center to evaluate the plant response to cobalt amendments at different rates of N fertilization. Prior to that, a preliminary greenhouse pot experiment was conducted in 3 replicates on the same plant and NRC farm soil within the year of 2007 to define the more promotive concentration of cobalt between 10 concentrations, started from 2, 4, 8, 12, 16, and 20 mg/L cobalt. The plants left to grow until 60 days-old and then removed for measurement of some plant parameters and chemical analysis. The amendment of cobalt to the soil improved the growth parameters of the faba bean plants inoculated with Rhizobium leguminosarum var. vicia bacteria compared to the cobalt untreated plants (control). Values of plant height, leaves number and area, shoot dry weight, root dry weight as well as nodules number and weight, seed yield, nitrogenase activity and plant mineral content were gradually increased by the successive increase in cobalt dose from 0 to 12 ppm. At the highest dose of cobalt (16 ppm), these values tended to decrease. The data clearly exhibited also that all yield measurements at all N doses were scanty and uneconomically in absence of cobalt amendment, particularly at the low doses of N fertilization. It could be concluded that cobalt is an essential element for certain microorganisms, particularly those fixing atmospheric nitrogen in particular, for nodules formation, its deficiency seems to depress the efficiency of N 2 fixation process.
Effects of Molybdenum Treatments on Maize and Sunflower Seedlings
The aim of the present study was to examine whether increasing molybdenum (Mo) concentration affects the growth and Mo concentration of maize (Zea mays L. cv Norma SC) and sunflower (Helianthus annuus L. cv Arena PR) seedlings within laboratory conditions. In this experiment, calcareous chernozem soil was used and Mo was supplemented into the soil as ammonium molybdate [(NH 4) 6 Mo 7 O 24 .4H 2 O] in four different concentrations as follow: 0 (control), 30, 90 and 270 mg·kg-1. In this study, we found that molybdenum in small amount (30 mg·kg-1) affects positively on growth of maize and sunflower seedlings, however, higher concentration of Mo reduces the dry weights of shoots and roots. In the case of maize the highest Mo treatment (270 mg·kg-1) and in sunflower 90 mg·kg-1 treatment caused significant reduction in plant growth. In addition, we observed that molybdenum contents in the roots and shoots were very low in case of control soil but were significantly elevated with increasin...
Field experiment was conducted to assess the uptake of iron and zinc by soybean as influenced by seed priming with iron and zinc in calcareous soil of Rahuri (Maharashtra). Iron and zinc are the most commonly deficient nutrients on calcareous soils. As a result, the crop productivity is decreased. All micronutrients essential for plants are also essential for humans. At present Fe and Zn deficiencies in humans have emerged globally. The most prevalent methods of micronutrient addition are soil and foliar application. But the cost involved and difficulty in obtaining high quality micronutrient fertilizers are major concerns with these in developing countries. Priming is an easy and attractive alternative. The effect of seed priming, or soaking seeds in nutrient solution for 12 hours before drying and sowing them, was undertaken for soybean ( Glycine max) during the kharif season of 2016 i.e. from 30-6-2016 to 10-9-2016 in M.P.K.V, Rahuri, Maharashtra. There were seven treatments with three replications following RBD design. Including absolute control and GRDF different concentration of Fe and Zn were tried through priming for 12 hrs to the crop soybean along with seed treatment with Rhizobium @ 250 gm10Kg -1 seeds. Better results were obtained from priming the seeds compared to the controlled one. The highest significant grain and stover yields of soybean was observed in the seed treatment with 0.02% FeSO 4 .7,H 2 O and which was at par with the treatment in seed primed with 0.1% Fe-EDTA. Other treatments were significantly lower in grain and stover yield.
International Journal of Chemical Studies, 2018
An investigation was undertaken to study the effect of seed priming with iron and zinc on yield contributing parameters as well as the nutrient uptake of the Soybean (Glycine max). The field experiment was conducted at PGI, Research Farm. Department of Soil Science and Agril. Chemistry, M.P.K.V., Rahuri, during the kharif 2016-17. The effect of seed priming, or soaking seeds in nutrient solution for 12 hours before drying and sowing them, was done for soybean (Glycine max) during the kharif season of 2016 i.e. from 30-6-2016 to 10-9-2016 in M.P.K.V, Rahuri, Maharashtra. The experiment was laid out in a randomized block design with three replication and seven treatments. The treatment comprised of absolute control, GRDF (general recommended dose of fertilizer) (50:75:45 kg ha-1 N : P2O5:K2O + 5 t FYM ha-1), GRDF with seed priming with distilled water, GRDF with seed priming with Zn EDTA, GRDF with seed priming with ZnSO4, GRDF with seed priming with Fe EDTA, GRDF with seed priming wi...