scholarly journals The effect of biodegradable direct covers on the root development, yield and quality of cucumber

2014 ◽  
Vol 26 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Izabela Zawiska ◽  
Piotr Siwek
Keyword(s):  
Root Development ◽  
Dry Matter ◽  
Soluble Sugars ◽  
Average Diameter ◽  
Field Studies ◽  
Nitrate Content ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Yield Quality ◽  
Whole Plants

ABSTRACT The results of three years (2009-2011) of field studies using two types of biodegradable nonwoven covers (aromatic polyester IBWCH 75 g m-2 and polylactic acid PLA 54 g m-2) on the yield, quality and root development of cucumber are presented. Seeds of parthenocarpic cucumber (‘Mirabelle’ F1) were sown directly into the field at the beginning of May/June and covered with nonwoven field covers. A plot that remained uncovered served as the control. The covers were kept in place until the first flowers appeared. Cucumbers were harvested every three days for 5-6 weeks. Fruits were evaluated for dry matter, soluble sugars and nitrate content. After the last harvest, whole plants were harvested and evaluated for weight, surface area, total length and average diameter of the roots. The experiment showed that the covers increased the marketable yield of cucumber in 2009 and 2010 (regardless of the type of polymer), but did not influence the yield in 2011. In 2011 the fruits from the covered plots had higher levels of soluble sugars and dry matter in comparison to the control. The covers did not influence root development.

scholarly journals The effects of PLA biodegradable and polypropylene nonwoven crop mulches on selected components of tomato grown in the field

2014 ◽  
Vol 26 (2) ◽  
pp. 163-167 ◽  
Author(s):  
Izabela Zawiska ◽  
Piotr Siwek
Keyword(s):  
Ascorbic Acid ◽  
Dry Matter ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Growing Season ◽  
Field Studies ◽  
Nitrate Content ◽  
Yield And Quality ◽  
Cotyledon Stage

ABSTRACT The results of two years (2010-2011) of field studies using two types of nonwoven mulches (one biodegradable, polylactic acid PLA 54 g m-2, and traditional polypropylene PP 50 g m-2) on the yield and quality of tomato are presented. Seeds of tomato (‘Mundi’ F1) were sown in a greenhouse, in containers filled with perlite and sand, and then the plants at the cotyledon stage were replanted in multipot trays filled with substrate for vegetable plants. In the last week of May, seedlings were planted on mulches in the field at a spacing of 50 × 100 cm. The mulch was maintained throughout the growing season. A plot that remained unmulched served as the control. Tomatoes were harvested once a week. The fruits were evaluated for L-ascorbic acid, dry matter, soluble sugars and nitrate content. In 2011, the analysis of the plant material showed that the concentration of L-ascorbic acid was about 23% higher in the tomato fruits harvested from plants grown on biodegradable PLA 61 g m-2 mulch in comparison to the control. A similar effect was demonstrated for the soluble sugar concentration in 2011 for both types of nonwovens.

scholarly journals Frecuencias de corte y niveles de fertilización nitrogenada en rendimiento y calidad del forrraje de morera (Morus sp.), en Cuyuta, Guatemala

2016 ◽  
Vol 3 ◽  
pp. 48
Author(s):  
Carlos Rodríguez ◽  
Juan A. Quiñones ◽  
Rodrigo Arias
Keyword(s):  
Dry Matter ◽  
Ground Level ◽  
Dry Matter Digestibility ◽  
Yield And Quality ◽  
Whole Plant ◽  
Dual Purpose Cattle ◽  
Whole Plants ◽  
Cutting Height

The trial was conducted at the Centro de Producción Agrícola of ICfA in Cuyuta, Escuintla-Guatemala in order to generate information on the yield and quality of edible mulberry (Morus sp.) roughage treatments consisted of three harvest frequencies (6; 9 and 12 weeks and three fertilization levels of nitrogen (0.40 and 80 kg/ha). A complete randomized block experimental design, with a factorial arrangement (3x3) was used. The cutting height was 0.3 m above the ground level with two sequencies: from August 2nd to September 13 th and from September 13th to December 6th, 1990. In both cases, the 12 week frequency cutting and 80 kg of N were superior to the others (P<=0.01), yielding 6.87 and 6.15 t/ha of dry matter respectively. The yields at 9 weeks were statistically higher than those at 6 weeks. The highest protein percentage of the whole plant, leaves and stalks were produced at 6 weeks. The dry matter digestibility values in vitro showed little variability among treatments, with averages for whole plants, leaves and stalks of 65, 91 and 41 %, respectively. The preceeding data suggests that the mulberry has an excellent potential as a balanced supplement (protein and energy) for dual purpose cattle on the Southern coast of Guatemala.

scholarly journals The comparison of single and double cut harvests on biomass yield, quality and biogas production of Miscanthus × giganteus

2019 ◽  
Vol 65 (No. 7) ◽  
pp. 369-376
Author(s):  
Marta Kupryś-Caruk ◽  
Sławomir Podlaski
Keyword(s):  
Dry Matter ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Lignin Content ◽  
Soluble Sugars ◽  
Water Soluble ◽  
Miscanthus Giganteus ◽  
Yield Quality ◽  
The Impact

The aim of the research was to determine the impact of double-cut harvest system on yield, as well as on suitability of Miscanthus × giganteus biomass for ensiling and biogas production. Biomass was harvested at the end of June (harvest I) and at the beginning of October (harvest II, regrowth). A single-cut regime at the end of October was also conducted. Biomass from harvests I and II was ensiled and subjected to anaerobic fermentation. The total dry matter (DM) yield from double-cut harvest system was similar to the DM yield from one-cut harvest, but two harvests per year had a positive effect on chemical composition of the biomass. C/N ratio and lignin content in the biomass from harvest I was lower compared to the single-cut biomass. Double harvest biomass was susceptible to ensiling, however, the biomass from harvest I characterized by low dry matter and water soluble sugars content resulted in poorer quality of the obtained silage (butyric acid was present). There were no significant differences between the methane yields obtained from ensiled biomass from harvests I and II.

scholarly journals The yield and quality of broccoli grown under flat covers with soil mulching

2014 ◽  
Vol 60 (No. 5) ◽  
pp. 228-233 ◽  
Author(s):  
E. Kosterna
Keyword(s):  
Ascorbic Acid ◽  
Dry Matter ◽  
Nutritive Value ◽  
Ascorbic Acid Content ◽  
Chemical Components ◽  
Marketable Yield ◽  
Fresh Matter ◽  
Organic Mulch ◽  
Yield And Quality ◽  
Rye Straw

The experiment was carried out between 2010 and 2012. Effect of plants covering and the kind of organic mulch applied to soil mulching on the yield and selected component of nutritive value in Milady F<sub>1</sub> broccoli cultivated for early harvest was investigated. The application of polypropylene fibre contributed to a significant increase in the marketable yield of broccoli on average by 5.25 t/ha, weight of head by 0.10 kg and length of arc by 1.44 cm. Increase of the content of chemical components as a result of plants covering amounted to 1.76% for dry matter,&nbsp;2.50 mg/100 g fresh matter (FM) for ascorbic acid, 0.65% FM for total sugar and 0.15% FM for monosaccharides. All kinds of straw contributed to an increase in the broccoli yield and improvement its parameters. The highest marketable yield and weight of head was obtained in the plots mulched with buckwheat straw. Irrespective of covering, cultivation on the mulch with buckwheat straw contributed to a slight decrease in dry matter, total sugars content, whereas cultivation on the rye straw decreased ascorbic acid content.

scholarly journals Effect of foliar spray of micronutrients and hormones on cauliflower (Brassica oleracea var. botrytis L.)

2021 ◽  
Vol 6 (4) ◽  
pp. 548-555
Author(s):  
M. Rahman ◽  
M.K. Shahadat ◽  
M.H. Rashid ◽  
F.A. Nasim
Keyword(s):  
Agricultural Research ◽  
Foliar Application ◽  
Foliar Spray ◽  
Agricultural Research Institute ◽  
Marketable Yield ◽  
Good Shape ◽  
Yield And Quality ◽  
Yield Quality ◽  
Effect On Yield ◽  
Positive Effect

In order to achieve optimal plant growth and production, essential nutrients must be readily available in adequate quantities and in a balanced proportion to give a good yield, especially cauliflower which has health benefits that may not be found in many other plants. For this purpose, this experiment was carried out during the seasons 2020-2021 in the on station of Bangladesh Agricultural Research Institute, Khulna under Smallholder Agricultural competitiveness project. Although the treatments showed a positive effect on yield, quality and economics but, T1 revealed most significant influence on all parameters under study as compared to T0 (control). For micronutrients and hormone, T1 treatment produced the highest curd yield (29.99 t ha-1) and the lowest (17.04 t ha-1) was control from the varietal effect the highest curd yield was (35.14 t ha-1) from V4 (It Amazuku 33) and the lowest was (16.21 t ha-1) from V5 (BARI Fulcopi-1). In case of combined effect, the highest curd yield (45.16 t ha-1) was obtained from T1V4 and the lowest curd yield (10.27 t ha-1) from T0V1. Therefore, it can be suggested that the highest curd yield and good shape cauliflower curd can be obtained application of Zn 8.83 kg/ha, B 3.5 kg/ha, Ma 8.43 kg/ha and Flora (Hormone) 2 ml/1 L of water. Therefore, foliar application of micronutrients and hormone is suitable way to feed the cauliflower crop to enhance the marketable yield and quality.

scholarly journals Effect of Growing Period and Cultivar on the Yield and Biological Value of Brassica rapa var. narinosa

2013 ◽  
Vol 41 (2) ◽  
pp. 546 ◽  
Author(s):  
Andrzej KALISZ ◽  
Agnieszka SĘKARA ◽  
Joanna GIL ◽  
Aneta GRABOWSKA ◽  
Stanisław CEBULA
Keyword(s):  
Brassica Rapa ◽  
Dry Matter ◽  
Large Scale ◽  
Soluble Sugars ◽  
Nutrient Content ◽  
Biologically Active ◽  
Crude Fibre ◽  
Marketable Yield ◽  
Growing Period ◽  
Chemical Variability

The aim of the present study was to evaluate the usefulness of Brassica rapa var. narinosa for field production in Central European climatic zone in order to introduction of this species to large-scale farming. Chinese flat cabbage cultivars, ‘Tatsoi’ and ‘Misome’, were the object of the 2-year-long field experiment in south Poland, conducted in 2 terms: plantings in the middle and at the end of August, harvests in the middle of September and on the beginning of October (1st and 2nd growing period, respectively). Plants were evaluated for morphological and chemical variability at the transplant stage. The yield and bioactive compounds content in the leaf petioles of mature plants were also studied. Analyses of juvenile plants, conducted before transplanting, showed that ‘Misome’ transplants were greater, but they had less leaves then ‘Tatsoi’. Transplants of both cultivars from the 2nd growing period had greater fresh weight, but the content of dry matter, soluble sugars and carotenoids was lower. Total and marketable yield, rosette mass, L-ascorbic acid and crude fibre content were greater for both cultivars planted in the middle of August and harvested in the middle of September. Leaf petioles of Chinese flat cabbage from the 2nd growing period were significantly richer in dry matter and soluble sugars. Only the level of carotenoids and chlorophylls was not influenced by the growing period. ‘Misome’ gave the greater marketable yield of better structure, and had a higher content of biologically active compounds than ‘Tatsoi’, with the exception of crude fibre. In Central Europe conditions, this cultivar should be recommended for plantings in the middle of August to achieve the best yields of high nutrient content.

INFLUENCE DES CULTIVARS, DES DATES ET DES DOSES DE SEMIS SUR LE RENDEMENT ET LA QUALITÉ DE LA LUZERNE SEMÉE EN FIN D’ÉTÉ

1984 ◽  
Vol 64 (3) ◽  
pp. 667-675 ◽  
Author(s):  
L. BELZILE
Keyword(s):  
Medicago Sativa ◽  
Crude Protein ◽  
Dry Matter ◽  
First Year ◽  
Seeding Rate ◽  
Yield And Quality ◽  
Seeding Date ◽  
Yield Quality ◽  
Medicago Sativa L

The effects of cultivars, date and rate of seeding on the yield and quality of alfalfa (Medicago sativa L.) seeded at the end of summer and harvested the year after was studied from 1971 to 1975 on a Kamouraska clay. Seeding in early August gave the best results; seeding should not be carried out after mid-August. Differences between cultivars were more important on the third than on the first cut. Aftergrowth was an important factor on yield during the first year of harvest. Seeding rate did not always affect the yield, but the 6,7 kg/ha rate yielded less than the 13,4 kg/ha rate at the first cut and when the cuts were summed. The combined effects of the three factors studied indicates the importance of the seeding date on the height, cover and yield of alfalfa. Digestibility and crude protein content of the dry matter were affected more by seeding dates than by cultivars. The effect of cultivars on quality was variable and seeding rates had no effect. The variation in forage quality may be attributed to a difference in maturity of the plant at harvest, rather than only to the factors studied.Key words: Medicago sativa L., cultivar, date, rate, yield, quality

Effect of Long-Term Organic and Mineral Fertilization on the Yield and Quality of Red Beet (Beta vulgaris L.)

2008 ◽  
Vol 68 (1) ◽  
pp. 111-125 ◽  
Author(s):  
Kazimierz Felczyński ◽  
Krystyna Elkner
Keyword(s):  
Beta Vulgaris ◽  
Mineral Nitrogen ◽  
Nitrate Content ◽  
Mineral Fertilization ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Red Beet ◽  
Organic Mineral

Effect of Long-Term Organic and Mineral Fertilization on the Yield and Quality of Red Beet (Beta vulgarisL.)In 2003-2004, an experiment was carried out with two cultivars of red beet using the experimental plots of a long-term static fertilization experiment that was begun in 1922 in the Experimental Field of the Institute of Vegetable Crops in Skierniewice. Under assessment was the response of red beet plants to longterm organic, mineral, and organic-mineral fertilization applied at different rates. The highest marketable yield, of all the fertilization combinations, was obtained in each year of the experiment from the each year treatment with manure alone at 60 t·ha-1. However, the level of red pigments in beet roots from this treatment was low, while that of yellow pigments, and also of nitrates, was high. Fertilization with manure at 60 t·ha-1in combination with mineral nitrogen fertilization at 60 kg N·ha-1resulted in a lower marketable yield compared to the treatment with manure only. The roots from the combined treatment, like those from the treatment with manure alone at 60 t·ha-1, had a low ratio of betanine to vulgaxanthine, and the highest nitrate content of all the fertilization combinations. At lower levels of fertilization with manure (20 and 40 t·ha-1), the additional fertilization with mineral nitrogen increased the marketable yield of red beet roots, but it reduced betanine content in 2003, and increased the level of nitrates in both years, in comparison with the corresponding treatments with manure only. Relatively high marketable yields of well-coloured roots with a high betanine content and a low vulgaxanthine content, and a low level of nitrates, were obtained from the treatment with mineral fertilizers applied at the lowest rates (N - 60, P2O5- 30, K2O - 70 kg·ha-1). However, as the application rates of these fertilizers increased, the marketable yield of beet roots and their betanine content decreased. At the same time, the level of nitrates in the roots of both cultivars increased. The lowest marketable yields, but of well-coloured beet roots with a low nitrate content were obtained from the zero-fertilization control plots and from the treatment with manure alone at 20 t·ha-1.

scholarly journals Performance of Broccoli Cultivars in Spring and Fall Evaluations in Pennsylvania

2016 ◽  
Vol 26 (6) ◽  
pp. 869-876
Author(s):  
Elsa Sánchez ◽  
Thomas Butzler ◽  
Lee Stivers ◽  
Robert Pollock ◽  
Timothy Elkner ◽  
...  
Keyword(s):  
United States ◽  
Production Systems ◽  
Growing Season ◽  
Eastern United States ◽  
Marketable Yield ◽  
Head Diameter ◽  
Growing Seasons ◽  
Yield And Quality ◽  
Yield Quality ◽  
A Site

Recent hypothetical modeling suggests that increasing commercial broccoli (Brassica oleracea var. italica) acreage in the eastern United States has the potential to notably reduce the costs of transportation within the broccoli supply chain. In this region, increasing broccoli acreage will require production improvements. Here, research was conducted to determine the best yielding commercially available cultivars for broccoli production. Eighteen to 19 cultivars of broccoli were evaluated in spring and fall evaluations using diverse production systems during 2014–15 in three locations across Pennsylvania. Data collected included production, yield, and quality attributes. Most interactions between site, year, and cultivar were significant suggesting that environmental conditions influence broccoli yield, quality, and concentration of harvest. Overall, the cultivars evaluated were not different from, Imperial, the standard used, for marketable yield, head diameter, and concentration of harvest within a site year. Blue Wind was consistently the first cultivar harvested, and Avenger and Emerald Jewel the last overall site years and growing seasons. These three cultivars may be good options for extending the growing season.

scholarly journals 253 MICROPROPAGATION, A MEANS TO ENHANCE SWEETPOTATO YIELD AND QUALITY

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 466a-466
Author(s):  
Jonathan R. Schultheis ◽  
Wanda W. Collins ◽  
Charles W. Averre
Keyword(s):  
North Carolina ◽  
Certified Seed ◽  
Field Studies ◽  
Plant Production ◽  
Marketable Yield ◽  
Production Program ◽  
The North ◽  
Yield And Quality ◽  
Production Scheme ◽  
Micropropagated Plants

Micropropagated sweetpotato is utilized in California as pan of its seed production program. Sweetpotato yields and quality might be improved in North Carolina by incorporating micropropagation as pan of its plant production scheme. Field studies were conducted in 1992 and 1993 to determine the effects of micropropagation, virus, and hill selection on yield and qualify of Jewel and Beauregard varieties. In 1992, yield was increased in Beauregard with micropropagated plants compared with plants that were derived from the North Carolina seed program. However, no yield advantage was measured when Jewel was micropropagated. In 1993, yield from micropropagated Beauregard sweetpotato plants was the same as when plant material was derived from the North Carolina Certified Seed program. Virus-free micropropagated Beauregard plants yielded more number one and canner grade roots than micropropagated plants that harbored the virus at planting. Russet crack symptoms were significantly greater in roots that were not micropropagated compared with micropropagated plants. Total marketable yield of Jewel was increased when obtained from micropropagated versus nonmicropropagated plant stock. Micropropagated Jewel obtained from a California selection yielded nearly 20% less than the North Carolina selection. Yields from micropropagated planting stocks consistently were equal to or better (typically 10 to 20%) than from plant stock not micropropagated.

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