scholarly journals Spinach and pepper response to nitrogen and sulphur fertilization

2011 ◽  
Vol 50 (No. 7) ◽  
pp. 303-308 ◽  
Author(s):  
M. Smatanová ◽  
R. Richter ◽  
J. Hlušek
Keyword(s):  
Dry Matter ◽  
Nitrogen Concentration ◽  
Essential Amino Acids ◽  
Dry Matter Production ◽  
Nitrate Content ◽  
Matter Production ◽  
Applied Dose ◽  
N:S Ratio ◽  
Positive Effect

A vegetation pot experiment was established to explore the effect of two doses of nitrogen (0.6 and 0.9 gN in the form of ammonium sulphate) and two doses of sulphur (20.6 and 30.6 mg/kg of soil) on the yields and quality of spinach and pepper in comparison with a natural level (7.85 mg/kg). The results of the experiments confirmed that the application of sulphur by means of (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> in combination with nitrogen had a positive effect on yields and also on the quality of the vegetables. In the sulphur-free variants of spinach the effect was statistically significant and also when the levels of S in the soil were higher. Lower doses of nitrogen under increased levels of sulphur increased the yields statistically significantly (on average by 47%) and the sulphur concentration in the plants increased. The N:S ratio became narrower in proportion with the level of sulphur, particularly under a lower N level. The nitrate content in spinach corresponded with the applied dose of nitrogen and the nitrogen concentration. The sulphur level did not influence the content of C vitamin, but had a positive effect on the content of the essential amino acids cysteine and methionine. A mean level of S<sub>1</sub> in combination with a N<sub>1</sub> dose significantly increased pepper yields, narrowed the N:S ratio and was reflected in dry matter production per 1 g of N. The highest pepper yields were achieved with a dose of S<sub>1</sub>, which resulted in the highest dry matter production in the fruit per1 g of N under both levels of N. At the same time increasing the sulphur level reduced the content of nitrate and increased the level of cysteine from 0.11 to 0.305 g/kg.

scholarly journals Content of inorganic solutes in lettuce grown with brackish water in different hydroponic systems

2017 ◽  
Vol 21 (3) ◽  
pp. 150-155 ◽  
Author(s):  
Alide M. W. Cova ◽  
Fabio T. O. de Freitas ◽  
Paula C. Viana ◽  
Maria R. S. Rafael ◽  
André D. de Azevedo Neto ◽  
...  
Keyword(s):  
Fresh Water ◽  
Nutrient Solution ◽  
Brackish Water ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Matter Production ◽  
Water Plant ◽  
Hydroponic Systems ◽  
Inorganic Solutes

ABSTRACT The objective of this study was to evaluate the growth and accumulation of ions in lettuce grown in different hydroponic systems and recirculation frequencies. The experimental design was randomized blocks with 8 treatments and 4 replicates. The evaluated hydroponic systems were Nutrient Flow Technique (NFT) and an adapted Deep Flow Technique (DFT), the latter with recirculation frequencies of 0.25, 2 and 4 h. Both systems used fresh water and brackish water. Plant growth, accumulation of inorganic solutes (Na+, K+, Cl- and NO3-) and the correlation between dry matter production and Na+/K+ and Cl-/NO3- were evaluated. The salinity of the water used to prepare the nutrient solution caused decrease in growth and K+ and NO3- levels, and increased contents of Na+ and Cl- in the plants. When using fresh water the highest dry matter production was obtained in the NFT system. In case of brackish water the adapted DFT system increased the production, in relation to NFT system (at same recirculation frequency: 0.25 h). It was found that the choice of the type of hydroponic system and recirculation interval for the cultivation of lettuce depends on the quality of the water used to prepare the nutrient solution.

scholarly journals Nitrogen fertilization in banana grown on a highly weathered soil of the humid mountain region of Puerto Rico.

1969 ◽  
Vol 86 (1-2) ◽  
pp. 15-26
Author(s):  
Héber Irizarry ◽  
Ricardo Goenaga ◽  
Ulises Chardón
Keyword(s):  
Total Nitrogen ◽  
Nitrogen Uptake ◽  
Dry Matter ◽  
Nitrogen Concentration ◽  
Maximum Yield ◽  
Leaf Nitrogen ◽  
Dry Matter Production ◽  
Nitrogen Rate ◽  
Matter Production ◽  
Nitrogen Rates

A 40-month experiment was conducted to re-evaluate the nitrogen fertilization recommendation for banana grown on a clayey, mixed isohyperthermic Aquic Haplohumults under rainfed conditions. Five nitrogen rates (0, 85,170, 255 and 340 kg/ha/crop) were arranged in a randomized compíete block design with three replications. The nitrogen treatments were applied with 24.4 kg/ha of phosphorus, 651,7 kg/ha of potassium, and a minor element mixture containing 22.7 kg/t of fertilizer. Treatments were applied every three months. Applications of magnesium alone were also applied between treatments at the rate of 55 kg/ha in the plant crop (PC) and 110 kg/ha in each of two ratoon crops (R1, R2). During growth and development of three crops we collected data of plant and bunch traits, green and oven-dry biomass weight, nitrogen concentration in various plant organs, and bunch marketable weight at harvest. Results showed that the rate x crop interaction was highly significant (P < 0,01) for total nitrogen uptake, and for nitrogen concentration in the leaf-lamina four months before bunch harvest, and significant (P < 0.05) for total dry matter production. Total nitrogen uptake, leaf nitrogen concentration, and total dry matter production linearly increased with increments in the nitrogen rates. Overall total nitrogen uptake and total dry matter production were always significantly higher in the R2 than in the PC, Regardless of the nitrogen rate, a significantly higher nutrient concentration was always found in the leaf-lamina of the R1 plants than in either the PC or the R2 plants. Crop had no significant effect on yield, but nitrogen rate significantly influenced yield. A maximum yield of 57,060 kg/ ha/crop was obtained with an estimated nitrogen application of 240 kg/ha. This amount corresponded to a leaf nitrogen concentration of between 2.75 and 2.85 g/kg. Since the maximum yield for all crops was obtained with a nitrogen application of only 240 kg/ha, we concluded that the linear response to fertilization in excess of this amount for total nitrogen uptake, nutrient concentration, and total dry matter production may be attributed to luxury consumption of nitrogen.

A comparison of twenty Digitaria accessions at four sites in south-east Queensland

1978 ◽  
Vol 18 (95) ◽  
pp. 817 ◽  
Author(s):  
RW Strickland ◽  
KP Haydock
Keyword(s):  
Nutritional Quality ◽  
Dry Matter ◽  
Potassium Content ◽  
Dry Matter Production ◽  
Animal Nutrition ◽  
North West ◽  
Matter Production ◽  
Cutting Frequency ◽  
Sodium And Potassium

Dry matter production and quality of 20 Digitaria accessions, cut four- and eight-weekly, were compared at four sites in south-east Queensland differing in soils, rainfall and frost incidence over the period 1971-73. The wettest, least frosted site was at Beerwah (70 km north of Brisbane) and the two driest, most frosted sites were at Narayen (480 km north-west of Brisbane). Samford (near Brisbane) was intermediate in terms of rainfall and frost incidence. Dry matter production over the two years varied markedly with site, accession and cutting frequency, and there were interactions between all three. D. smutsii (CPI 38869) was well adapted to all sites and Narayen in particular, O. macroglossa (CPI 16267) was specifically adapted to Beerwah, and D. milanjiana (CPI 41 192) and the two D. smutsii accessions (CPI 38869,16778A) to Samford. Accessions of D. milanjiana, O. pentzii and D. setivalva also performed well at Narayen. Accessions differed in resistance to fire, frost, rust and insects, and in nutritional quality. However, all were adequate for ruminant nitrition. An examination of the quality of the accessions as standover winter feed at Narayen showed that frost lowered digestibility, and the sodium and potassium content of the herbage, but not to the level where animal nutrition would be affected.

scholarly journals Produksi dan Kandungan Nutrien Beberapa Varietas Sorgum Hybrid dengan Jarak Tanam Berbeda sebagai Sumber Pakan

2019 ◽  
Vol 17 (1) ◽  
pp. 1-5
Author(s):  
Hajar Hajar ◽  
Luki Abdullah ◽  
Didid Diapari
Keyword(s):  
Biomass Production ◽  
Crude Protein ◽  
Dry Matter ◽  
Block Design ◽  
Plant Production ◽  
Crude Fiber ◽  
Dry Matter Production ◽  
Fresh Biomass ◽  
Matter Production

Sorghum feed is a type of cereal plant that has potential use as animal feed or forage. The reseach aim was to evaluate production and nutritional quality of some sorghum hybrid varieties, and determined the optimal spacing of sorghum plants. This research was arranged in a factorial randomized block design with 6 treatments and four replications. The first factor was the varieties of 12FS9006, 13FB7001 and 12S49001. The second factor was space of 25x25cm and 25x40 cm. The variables were fresh and dry matter of biomass production and also nutrient (ash, crude fiber, crude protein, Neutral Detergen Fiber and Acid Detergen Fiber. Sorghum varieties had significant effect (p<0.05) to fresh biomass production, dry matter biomass production, ash, crude ϐiber and crude protein). The space had a significant effect (p<0.05) to the dry matter production of biomass and crude fiber. The average variety of fresh biomass plant production was (18.90 tons ha-1), dry matter production of biomass was (4 ton ha-1), ash (5.51%), crude ϐiber (30.90%) and crude protein (8.45%). The average dry matter production was 4.34 tons ha-1 and crude ϐiber 29.96%. It can be concluded that the highest production and the best nutrient quality of sorghum hybrid was obtained at the sorghum variety of 12S49001, the distance of 25x25cm was the best plant space for hybrid sorghum production

Improved nitrogen supply to cereals in Central Queensland following short legume leys

1997 ◽  
Vol 37 (3) ◽  
pp. 359 ◽  
Author(s):  
R. D. Armstrong ◽  
K. Walsh ◽  
K. J. McCosker ◽  
G. R. Millar ◽  
M. E. Probert ◽  
...  
Keyword(s):  
Crop Production ◽  
Dry Matter ◽  
Nitrogen Concentration ◽  
Dry Matter Production ◽  
Wheat Crop ◽  
Lablab Purpureus ◽  
Plant Nitrogen ◽  
Matter Production ◽  
Wide Range ◽  
Perennial Legumes

Summary. The growth and ability of 12 summer-growing annual and perennial legumes to fix nitrogen and the response of a subsequent wheat crop was examined in a field trial on a deep cracking clay soil in the Central Highlands of Queensland. Twelve legumes [Lablab purpureus cv. Highworth, Vigna radiata cv. Satin, Macroptilium atropurpureum cv. Siratro, Medicago sativa cv. Trifecta, Vigna trilobata (CPI 13671), Macroptilium bracteatum (CPI 27404), Glycine latifolia (CQ 3368), Desmanthus virgatus cv. Marc, Desmanthus virgatus cv. Bayamo, Stylosanthes sp. aff scabra (104710), Clitoria ternatea cv. Milgarra, Cajanus cajan cv. Quest)] and grain sorghum (Sorghum bicolor cv. Tulloch) as a non-legume control were established in November 1994 and their growth monitored until March 1995. The legumes averaged greater than 5 t/ha dry matter production and 77 kg N/ha (above-ground only). Dry matter production ranged from less than 2 t/ha for G. latifolia and M. sativa to greater than 9 t/ha for D. virgatus cv. Bayamo and C. cajan. Annual legumes initially had much higher relative growth rates than the perennial legumes but they rapidily exhausted all the plant available water content of the soil thus allowing the well-established perennials to eventually match this production. The proportion of plant nitrogen (above ground) derived from N2 fixation was generally low, reflecting high soil NO3, but varied widely between species ranging from less than 20% for D. virgatus cv. Marc and G. latifolia to over 45% for C. ternatea, S. scabra and V. trilobata. The quantity of nitrogen derived from fixation was correlated with above-ground dry matter and nitrogen content. There was a significant (P<0.05) growth response by wheat following legumes compared with that following sorghum in the increasing order V. radiata = M. atropurpureum = L. purpureus > C. cajan = M. sativa = V. trilobata = M. bracteatum = G. latifolia > S. scabra = D. virgatus = C. ternatea. Previous legume growth had no significant (P>0.05) effect on yield or nitrogen concentration in a second ‘plant-back’ crop (sorghum). It was concluded that a wide range of pasture-ley legumes have the potential to improve cereal crop production in this region.

scholarly journals Influence of volume container in the production of rhizomes in Seemannia (Gesneriaceae)

2019 ◽  
Vol 25 (3) ◽  
pp. 287-292
Author(s):  
Paula Bologna ◽  
Santiago Stancanelli
Keyword(s):  
Statistical Analysis ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Perennial Plant ◽  
Conventional Management ◽  
Good Production ◽  
Matter Production ◽  
Herbaceous Perennial ◽  
Dry Matter Weight

Abstract Seemannia Regel belongs to the Gesnereacieae family. It is an herbaceous perennial plant with colorful and brilliant flowers that produces fleshy scaly rhizomes with axillary dormant buds. The objective of this study was to evaluate the effect of the volume of the container in the production and the quality of the rhizomes. Plants of a select hybrid of Seemnania were used. Three volume of container were tested: v1 of 1 L, v2 of 1,5 L and v3 of 2 L. Plants were cultivated in the containers following a conventional management. Dry matter, production (number and weight of rhizomes) and quality of the rhizomes were recorded. The rhizomes were classified into four qualities (A, B, C, D) according to the length and width, and the number of the scales. All data was subject to statistical analysis. Dry matter, weight and number of rhizomes increased as the volume of container increased. The v3 container recorded the highest values for these three parameters. Major volume of container, major was the development of vegetative mass and consequently the number and the weight of rhizomes were higher. In regard to the qualities of the rhizomes, v1 and v3 treatments had a better proportion of A rhizomes (the bigger size) compared to v2 treatment. The knowledge of the rhizome quality can be useful to the growers in order to select the best rhizome size for a good production. The v3 treatment recorded the highest number of A rhizomes, that we consider a good quality, because it has the bigger size with more scales and consequently more propagules.

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