Seed Pelleting Research Articles

Effect of organic seed pelleting on seedling quality, gas exchange, growth, yield and resultant seed quality parameters of black gram

Seed pelleting with leaf powders of two botanicals viz., pungam (Pongamia glabra) and prosopis (Prosopis juliflora) was done to study the effect of botanical seed pelleting on seedling quality, gas exchange, growth, yield and resultant seed quality parameters of black gram in the laboratory and field. From the results, it was found that, seeds pelleted with pungam leaf powder @ 150 g kg-1 recorded higher germination percentage (93.00), root length (18.35 cm), shoot length (19.34 cm), dry matter production (0.48 mg seedling-10) and vigour index (3505.10). The yield parameters such as pod length, number of pods plant-1, pod yield plant-1, number of seeds pod-1 and 100 seed weight were also found higher in pungam leaf powder pelleting treatment @ 150 g kg-1. The control recorded the least values in all these growth and yield parameters of black gram.

English

English

Effects of Seed Pelleting on Seed Quality of Cowpea (Vigna unguiculata L.) During Storage

Effects of Seed Pelleting on Seed Quality of Cowpea (Vigna unguiculata L.) During Storage

Effect of Seed Pelleting and Foliar Nutrition on Growth andYield of Summer Irrigated Sesame (Sesamum indicum L.)

Effect of Seed Pelleting and Foliar Nutrition on Growth andYield of Summer Irrigated Sesame (Sesamum indicum L.)

ИССЛЕДОВАНИЯ ТЕХНОЛОГИИ ПОЛУЧЕНИЯ ДРАЖИРОВАННЫХ СЕМЯН С ИСПОЛЬЗОВАНИЕМ КОМПОЗИЦИОННЫХ ПОЛИМЕРНЫХ ПРЕПАРАТОВ

ИССЛЕДОВАНИЯ ТЕХНОЛОГИИ ПОЛУЧЕНИЯ ДРАЖИРОВАННЫХ СЕМЯН С ИСПОЛЬЗОВАНИЕМ КОМПОЗИЦИОННЫХ ПОЛИМЕРНЫХ ПРЕПАРАТОВ

Physiological priming and pelleting of tobacco seeds

Physiological priming and pelleting of tobacco seeds

Organic Seed Pelleting in Mustard

Organic Seed Pelleting in Mustard

Comparative studies of seed priming and pelleting on percentage and meantime to germination of seeds of tomato (Lycopersicon esculentum Mill.)

The effect of seed priming and pelletting on germination percentage and mean time to germination of local cultivars (cv.) of tomato (Lycopersicon esculentumMill.) was studied in 2006 in Mauritius. Osmopriming with Polyethylene Glycol (PEG), at -1.25 MPa for 2 days resulted in significantly (P < 0.01) higher germination percentage (79.1%) than untreated control seed (62%) of the tomato cv. Sirius which is considered satisfactory for tomato. Besides, seeds primed for 2 days emerged earlier than seeds primed for 7 days. Acacia (Acacia nilotica) leaf powder which is locally affordable was used for the pelleting of the tomato seeds. The assay on seed pelleting proposed a formulation ratio (g/ml/ml) of seed: acacia powder: water of 10:3:22. Mean time to germination of the coated seeds was significantly different from that of the uncoated seed. However, meantime to germination significantly decreased in decoated seeds as compared to coated seeds. These results imply that seed coating presumably acts as a barrier that delays the emergence of tomato seedlings. Hence, pelleted seeds require decoating for enhanced germination and seedling emergence. This study concludes that seed priming and pelleting can be used to improve germination rate of seeds of locally grown tomato cultivars. These seed enhancement techniques can be adopted to standardize tomato transplant quality hence contributing to uniform crop stand in Mauritius. Key words: Tomato, seed priming, pelleted seeds, seed germination percentage.

Improvement of biological control capacity of Paenibacillus polymyxa E681 by seed pelleting on sesame

Sesame is an important vegetable crop for the production of oil in Korea. The main obstacle of sesame cultivation is the occurrence of damping-off diseases and wilt caused by a complex of soil-borne pathogens in fields cultivated for two or more successive years. To protect sesame seedlings against these diseases, Paenibacillus polymyxa E681, a plant growth-promoting rhizobacterium (PGPR) previously shown to suppress disease incidence and promote growth on cucumber and pepper in the greenhouse and field experiments, was evaluated for its capacity for biological control and growth promotion in vitro and in situ. Seed treatment with strain E681 alone did not show consistent protection. Therefore, seed pelleting with strain E681 was attempted to increase the seed size and improve the stability and effectiveness of biocontrol capacity by strain E681. Through screening of pelleting materials, a combination of clay and vermiculite was selected for further experiments to enhance seed germination and root colonization of strain E681 on sesame. In greenhouse trials, formulations of strain E681 reduced disease incidence in disease-conducive soil. In the field, pelleting of sesame seeds with strain E681 significantly reduced pre- and post-emergence damping-off compared to the non-treated or pelleting alone controls; pelleting also promoted the plant growth and the grain yield. Furthermore, the efficacy of strain E681 for biological control and plant growth promotion was improved by sesame seed pelleting compared to the treatment with strain E681 alone. Hence, the application of strain E681 via seed pelleting offers potential to overcome some of the problems associated with successive years of sesame cultivation.

The Use of Seed Pelleting in Order to Delay Germination of Trifolium repens L.

The Use of Seed Pelleting in Order to Delay Germination of Trifolium repens L.

Efeito de diferentes materiais de peletização na deterioração de sementes de tomate durante o armazenamento

O revestimento de sementes de hortaliças é uma técnica bastante utilizada, principalmente para as espécies que possuem sementes pequenas, sendo uma de suas funções, o aumento do tamanho das mesmas para fins de semeadura. Neste contexto, o presente trabalho teve como objetivo revestir sementes de tomate com diferentes materiais, e avaliar seu comportamento durante o armazenamento. Utilizaram como revestimento uma mistura de areia + microcelulose e outra de calcário + microcelulose, contendo ou não o fungicida Rovrin na dosagem de 200g/100 kg de sementes. As sementes revestidas, juntamente com as não revestidas (com ou sem fungicida), foram secadas e embaladas em envelopes de papel comum (embalagem permeável) e em papel laminado (embalagem impermeável) e armazenadas em condições de ambiente no Laboratório de Análise de Sementes da Universidade Federal de Lavras. A avaliação da qualidade das sementes foi realizada a cada quatro meses, por um período de 24 meses, utilizando as seguintes determinações: teste de germinação, envelhecimento acelerado e emergência de plântulas em solo + areia. Pelos resultados obtidos, conclui-se que: sementes revestidas apresentaram germinação mais lenta do que as não revestidas; sementes revestidas com calcário + microcelulose deterioram mais rápido que com areia + microcelulose e sementes tratadas com fungicida em associação com os materiais de revestimento perdem sua qualidade mais rapidamente durante o armazenamento. Verificou-se ainda que sementes revestidas com areia + microcelulose e sem tratamento fungicida mantiveram sua qualidade durante os 24 meses de armazenamento, independente da embalagem utilizada.

직파용 벼 펠렛종자 제조장치 개선 연구(I) - 장치 제작과 성능분석 -

직파용 벼 펠렛종자 제조장치 개선 연구(I) - 장치 제작과 성능분석 -

파 펠렛종자 생산을 위한 접착제 및 피복재료 선발

본 연구는 파 종자의 발아력을 증진시킬 수 있는 생장조절제 최적 처리조건을 구명하며, 파 종자 펠렛용으로 적합한 접착제 및 피복재료를 선발하기 위해 수행되었다. 식물생장조절제 종자처리는 발아율을 증진시키지는 못했다. 그러나 50% 발아에 소요되는 일수(<TEX>$T_{50}$</TEX>)와 MDG는 단축되어 조기발아 하였다. 생장조절제 최적 처리조건은 500<TEX>$\mu$</TEX>M의 <TEX>$GA_3$</TEX>로 1일간 처리였다. 생장조절제 처리에 의한 발아촉진 효과는 발아적온보다는 저온인 <TEX>$15^{\circ}C$</TEX>에서 뚜렷하였다. 종자 펠렛의 접착제 종류 및 농도에 따라 발아율에는 큰 차이가 없었으나 발아속도는 대조구 종자에 비해 약 0.3~0.5일 지연 되었다. 종자 펠렛용 접착제의 농도가 증가하면 발아율이 약간 감소하였는데, 이러한 경향은 Carboxymethyl cellulose (CMC) 및 Methyl cellulose(MC)에서 뚜렷하였다. 종자 펠렛 접착제 가운데 Polyvinyl alcohol(PVA)와 Polyvinyl pyrrolidone(PVP)에서는 처리농도가 증가하더라도 발아를 크게 억제하지 않아, 파 펠렛종자 제조에 적용될 수 있는 최적 접착제였다. 펠렛 피복재료 중 kaoline, bentonite ＋ kaoline 혼합물질 및 bentonite ＋ CC ＋ DME #300 혼합물질로 펠렛된 종자에서 높은 발아율과 발아세를 보여 파종자의 펠렛에 적합한 피복재료였다. This study was carried out to select new pelleting binder and material for Welsh onion seeds. The optimum treatments of the various plant growth regulators to improve seed germination of the Welsh onion was also estimated. There were no significant effects of growth regulators on the germination percentage, but germination was faster according to the number of days to 50% of the final germination (<TEX>$T_{50}$</TEX>) and the mean number of days to germination (MDG) than those of the control. Germinability was increased when the seeds were soaked in gibberellic acid (<TEX>$GA_3$</TEX>) solution for 24hrs, even though there was no synergy effect on the germinability when <TEX>$GA_3$</TEX> was mixed with 6-benzylaminopurine (BAP). The optimum treatment for improving germination of Welsh onion was observed when the tested seeds was soaked in 500 <TEX>$\mu$</TEX>M of <TEX>$GA_3$</TEX> at <TEX>$20^{\circ}C$</TEX> for 24hrs. Also, when the seeds soaked in the aforementioned treatment, the rate of germination was increased at lower temperature than at <TEX>$20^{\circ}C$</TEX>, the optimal temperature. The percentage and the speed of seed germination depended on the kinds of pelleting binder and their concentration. It showed that the higher the concentration of the binder for seeds pelleting, the lower the percentage of seed germination. Among the pelleting binder, polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) were the best binders for seed pelleting, because seed germination using those binder did not affect on the concentration of binder. On the other hand, Carboxymethy cellulose (CMC) and methyl cellulose (MC) severely inhibited the seed germination The germinability was also different arcording to the pelleting materials. Among the different 58 pelleting materials, kaoline alone, the mixture of bentonite and kaoline, the mixture of bentonite, calcium carbonate and diatomaceous earth #300 were found as the best pelleting materials for welsh onion seeds.

Development of an inexpensive legume‐Rhizobium inoculation technology which may be used in aerial seeding

AbstractEncapsulation of seeds with alginate entrapped rhizobia (AER) bead has been developed as a new seed‐applied inoculum technique for utilizing legume‐Rhizobium symbiosis for the management and protection of natural ecosystems. Alginate beads trapped water and immobilized rhizobia which ensured germination of seeds and nodulation of seedlings. Incorporation of a synthetic polymer, Jalshakti, in alginate beads did not enhance symbiotic nitrogen fixation but sufficient number of rhizobia remain viable in them even after 30 weeks of storage reflecting suitability of these materials as carriers for rhizobia. Plant cultures raised from these beads were similar to or even better than the inoculated controls in symbiotic parameters indicating the effectiveness of seed‐applied inoculum technique. Pelleting of seeds with these polymers after coating with gum arabic lead to substantial reduction in symbiotic association and viability of rhizobia. Experiments involving two legume‐Rhizobium associations indicated that the encapsulation of seed with AER bead is a cheap, inexpensive and effective inoculation technique which may be used in aerial seeding.

Saatgutpillierung mit organischen substanzen zur beeinflussung der mikroorganismenbesiedlung und jugendentwicklung von weizen

By pelleting of wheat seeds with microbial decomposable organic matter it was possible the settle habitat-specific phytoeffective bacteria on the seed surface in the soil shortly. The juvenile development of the wheat plants was stimulated. The Pseudomonas spp. are called of special importance. By addition of Carbendazin the growth-stimulating effect of pelleting is obtained. The pelleting substrates stimulated the release of ethylen and the nitrogenase activity. Durch die Umhüllung von Weizensaatgut mit mikrobiell umsetzbaren organischen Substanzen (Pillierung) ist es möglich, am Samen im Boden kurzfristig standortspezifische phytoeffektive Bakterien anzureichern und die Jugendentwicklung des Weizens zu stimulieren. Eine besondere Bedeutung wird Pseudomonas-Arten zugesprochen. Der Zusatz von Carbendazin erhöht den wachstumsstimulierenden Effekt der Pillierung. Die Pillierungssubstanzen stimulieren die Ethylenfreisetzung und Nitrogenaseaktivität.

Effect of Antagonists in Combination with Carbendazim Against Macrophomina phaseolina Infection in Cowpea

Pelleting of cowpea seeds with Trichoderma viride Pers: fr. either alone or in combination with carbendazimm inhibited the growth of Macrophomina phaseolina Tassi (Gold.) in vitro . The treatment increased the germination and reduced the post emergence mortality under pot culture conditions. Carbendazim did not show any adverse effect on the antagonists T. viride and T. harzianum Rifal under in vitro and also in pot culture studies. Seed pelleting with carbendazim in combination with antagoinst reduced the seedling mortality besides enhancing the growth characteristics like shoot length, root length and dry matter production.

Intra- and inter-specific competition in Rhizobium fredii and Bradyrhizobium japonicum as indigenous and introduced organisms

We studied the competition between Bradyrhizobium japonicum and Rhizobium fredii isolates for nodulation of soybean (Glycine max L. Merrill) cultivars Williams and Ai Jiao Zao grown in three different soils in pots. Two of the soils were from People's Republic of China, one from a soybean field in Honghu with no history of Rhizobium inoculation, and one from a rice field in Wuhan with no history of soybean cultivation. The Honghu soil contained B. japonicum and R. fredii (log total number g−1 = 5.82 ± 0.58); whereas the Wuhan soil only contained B. japonicum (log total number g−1 = 2.80 ± 0.52). Inoculation did not result in a significant increase in nodule number on plants in either soil. Uninoculated plants of both cultivars harbored only R. fredii in the Honghu soil and only B. japonicum in the Wuhan soil. Even when B. japonicum were inoculated into the Honghu soil, R. fredii occupied the majority of the nodules on both cultivars. In the Wuhan soil, B. japonicum serogroups USDA110 and USDA136b (= CB1809) occupied the majority of the nodules except when an isolate of R. fredii from the soybean soil was added in high numbers. In a Hawaiian soil devoid of B. japanicum or R. fredii, when soybeans were inoculated with isolates of both species, most of the nodules were formed by B. japonicum. The R. fredii isolate could form up to 20% of nodules in this soil, but only on the Ai Jia Zao cultivar. In the Wuhan but not the Hawaiian soil, peat pelleting of seeds with equal numbers of two B. japonicum and one R. fredii isolates increased nodule occupancy by B. japonicum USDA136b serogroup significantly as compared with when the same isolates were inoculated into the soil. The results reported here highlight the critical importance of being indigenous to the competitive success of B. japonicum and R. fredii in nodulation of their soybean host.

Lettuce Stand Establishment with Improved Seed Pellets

ABSTRACT IN a comparison of seven new commercial lettuce seed pelleting materials Splitkote, Splitkote D, and Seedcoat showed significantly faster rates of emergence than others tested. For each day the emergence period is shortened in Imperial Valley, there are potential savings of $139,500 and a probability of more uniform sized heads at harvest.

Survival and Efficiency of Cowpea Rhizobia on Pelleted and Non-Pelleted Peanut Seeds, Treated with Fungicides

Peanut seeds were either normally inoculated with the legume inoculant Okadin, containing cowpea rhizobia, or pelleted and treated with each of the fungicides Brassical, Thiram, Orthocide 75, Falisan, Vitavax 75, and Agrosan. The seeds were then incubated at room (+/- 25 degrees C) or refrigeration temperatures (+/- 5 degrees C). Survival tests were made after 2 and 10 days. Treated seeds were also planted in pots containing Nile silt for testing the efficiency of rhizobia as affected by the fungicide and the pelleting treatments. Pelleting of peanut seeds enhanced the survival of rhizobia whether seeds were incubated at room or refrigeration temperature. Protection was more pronounced when seeds were kept at low temperature. This was true of the fungicides Brassical, Orthocide 75, Vitavax 75, Thiram, and Agrosan. Falisan, however, did not help the rhizobia to survive. All the fungicides tested reduced the number of rhizobia to nil within 10 days when the seeds were normally inoculated and then treated and incubated at room temperature. The numbers of rhizobia were appreciably reduced when incubated at refrigeration temperature. Pelleting tended to prevent the harmful effect of the fungicides. This was clearly demonstrated with a tendency of an increase in the total nitrogen of the plants. On the contrary, normally inoculated and treated seeds grew into plants with reduced amounts of total nitrogen fixed.

Pelleting of Pine Seeds with Rhizoctol and Other Fungicides for Control of Damping off in Kenya Highland Nurseries

Pelleting of Pine Seeds with Rhizoctol and Other Fungicides for Control of Damping off in Kenya Highland Nurseries