scholarly journals Influence of Increasing Tungsten Concentrations and Soil Characteristics on Plant Uptake: Greenhouse Experiments with Zea mays

2019 ◽  
Vol 9 (19) ◽  
pp. 3998
Author(s):  
Gianniantonio Petruzzelli ◽  
Francesca Pedron
Keyword(s):  
Zea Mays ◽  
Organic Matter ◽  
Food Chain ◽  
Plant Uptake ◽  
Great Influence ◽  
Mediterranean Area ◽  
Soil Characteristics ◽  
High Tech ◽  
Transfer Model ◽  
Plant Transfer

Tungsten is largely used in high-tech and military industries. Soils are increasingly enriched in this element, and its transfer in the food chain is an issue of great interest. This study evaluated the influence of soil characteristics on tungsten uptake by Zea mays grown on three soils, spiked with increasing tungsten concentrations. The soils, classified as Histosol, Vertisol, and Fluvisol, are characteristic of the Mediterranean area. The uptake of the element by Zea mays was strictly dependent on the soil characteristics. As the pH of soils increases, tungsten concentrations in the roots and shoots of the plants increased. Also, humic substances showed a great influence on tungsten uptake, which decreased with increasing organic matter of soils. Tungsten uptake by Zea mays can be described by a Freundlich-like equation. This soil-to-plant transfer model may be useful in promoting environmental regulations on the hazards of this element in the environment.

scholarly journals Genotypic variation in maize ( Zea mays ) influences rates of soil organic matter mineralisation and gross nitrification

2021 ◽  
Author(s):  
Lumbani Mwafulirwa ◽  
Eric Paterson ◽  
Jill E Cairns ◽  
Tim J Daniell ◽  
Christian Thierfelder ◽  
...  
Keyword(s):  
Zea Mays ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Genotypic Variation ◽  
Gross Nitrification

scholarly journals Introducing Mediterranean Lupins in Lambs’ Diets: Effects on Growth and Digestibility

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 942
Author(s):  
Mariana Almeida ◽  
Sofia Garcia-Santos ◽  
Ana Nunes ◽  
Sara Rito ◽  
Jorge Azevedo ◽  
...  
Keyword(s):  
Organic Matter ◽  
Protein Intake ◽  
Crude Protein ◽  
Dry Matter ◽  
Lupinus Albus ◽  
Mediterranean Area ◽  
Lupinus Luteus ◽  
Optimum Level ◽  
Apparent Digestibility ◽  
Livestock Feeding

Lupins are suitable candidates to replace soybean meal in livestock feeding in the Mediterranean area, presenting a solution for the European Union’s dependence on soybean importations. This study aimed to assess the effect of incorporating Lupinus albus and Lupinus luteus into Churra da Terra Quente lambs’ diets on growth performance and digestibility. Two trials were conducted over two years. In trial 1, two experimental diets containing 50 g/kg Lupinus albus and 50 g/kg Lupinus luteus were tested. In trial 2, lambs were fed with diets containing higher incorporations of Lupinus luteus (100, 150, and 200 g/kg: LL10, LL15, and LL20, respectively). Total dry matter, hay dry matter, and crude protein intake were calculated, as well as average daily gains. At the end of the growth trials, dry matter, organic matter, and NDF digestibility was determined. Incorporating 50 g/kg of lupins did not affect (p > 0.05) the performance. Lambs fed on LL20 diets presented the lowest HDMI and CPI values (p < 0.05). The highest intakes (p < 0.05) were observed from LL15 lambs. No differences were found in apparent digestibility coefficients between diets (p > 0.05), except for NDF digestibility which was highest (p < 0.05) for LL20. The optimum level of lupin inclusion in lambs’ diets seems to be 150 g/kg.

Pengaruh lama perendaman biji jagung pada larutan urin kelinci terhadap produktivitas fodder jagung (zea mays) dengan sistem hidroponik

2017 ◽  
Vol 5 (2) ◽  
pp. 117-127
Author(s):  
Lesmin Yigibalom ◽  
Tri Ida Wahyu Kustyorini ◽  
Aju Tjatur Nugroho Krisnaningsih
Keyword(s):  
Zea Mays ◽  
Organic Matter ◽  
Crude Protein ◽  
Dry Matter ◽  
Protein Production ◽  
Crude Fiber ◽  
Dry Matter Production ◽  
Corn Seed ◽  
Matter Production ◽  
Corn Kernels

Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh lama perendaman biji jagung pada larutan urin kelinci terhadap produktivitas fodder jagung(zea mays) dengan sistem hidroponik.Metode penelitian yang digunakan adalah percobaan lapang dengan menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 5 ulangan.Perlakuan penelitian yaitu P0 (tanpa perendaman), P1 perendaman pada air 24 jam, perendaman pada larutan urin P2 (8 jam), P3 (16 jam), dan P4 (24 jam). Variabel yang diamati dalam penelitian ini lama perendaman biji jagung yang berbeda dan larutan urin kelinci, variabel tersebut berkaitan dengan persentase perkecambahan, persentase kecambah normal, produksi segar, produksi bahan kering, produksi bahan organik, produksi protein kasar, produksi serat kasar. Analisis yang digunakan adalah analisis sidik ragam (ANOVA). Hasil menunjuk kan bahwa perlakuan perendaman biji jagung dalam larutan urin kelinci memberi pengaruh sangat nyata (P<0,01) terhadap Persentase kecambah normal produksi hijauan segar, produksi bahan kering, produksi bahan organik,produksi serat kasar , produksi protein kasar, sedangkan pada hasil pengamatan pada persentase kecambah memberi pengaruh tidak nyata (P>0,05), persentase kecambah normal tertinggi pada perlakuan P2 (99,3%) dan P1 (98,1%), produksi segar tertinggi pada P2 (384,2 gram)  produksi bahan kering tertinggi pada P2 (113,92  gram), produksi protein kasar tertinggi pada P2  (61,2 gram)  produksi bahan organik P2 (36,0 gram) dan produksi serat kasar P2 (55,58 gram). Kesimpulan dari hasil penelitian ini bahwa perlakuan perendaman biji jagung selama 8 jam dengan larutan urin kelinci dapat membrikan pengaruh yang lebih baik terhadap produktivitas fodder jagung dengan sistem hidroponik.   Abstract            This study aimed to determine the effect of soaking time of corn kernels on rabbit urine solution on the productivity of corn fodder (zea mays) with hydroponic systems. The research method used was a field experiment using a completely randomized design (CRD) with 5 treatments and 5 replications. Maintenance treatment is P0 (without immersion), P1 (immersion on water 24 hours), immersion on urine solution P2 (8 hours), P3 (16 hours), P4 (24 hours). Variables observed in this study were different lengths of corn seed immersion and rabbit urine solution, these variables were related to germination percentage, percentage of normal sprouts, fresh production, dry matter production, organic matter production, crude protein production, crude fiber production. The analysis used was variance analysis (ANOVA). These results indicate that the treatment of soaking corn kernels in the urine solution of rabbits had a very significant effect (P <0.01). ) to the percentage of normal germination of fresh forage production, dry matter production, production of organic matter, crude fiber production, crude protein production, while the results of observations on the percentage of sprouts had no significant effect (P> 0.05) P2 (99.3%) and P1 (98.1%), highest fresh production in P2 (384.2 grams) highest dry matter production in P2 (113.92 grams), highest crude protein production in P2 (61.2 gram) production of organic matter P2 (36.0 grams) and production of crude fiber P2 (55.58 grams). The conclusions from the results of this study that the treatment of corn seed immersion for 8 hours with rabbit urine solution can provide a better influence on the productivity of corn fodder with a hydroponic system.

scholarly journals CO2 Flux and C Balance due to the Replacement of Bare Soil with Agro-Ecological Service Crops in Mediterranean Environment

Agriculture ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 71 ◽  
Author(s):  
Emanuele Radicetti ◽  
O. Osipitan ◽  
Ali Langeroodi ◽  
Sara Marinari ◽  
Roberto Mancinelli
Keyword(s):  
Organic Matter ◽  
Co2 Emissions ◽  
Oilseed Rape ◽  
Soil Characteristics ◽  
Cold Period ◽  
Soil Co2 ◽  
Mediterranean Environment ◽  
Hairy Vetch ◽  
Ecological Service ◽  
Soil Co2 Emissions

Intensive agriculture practices often results in decomposition of organic matter, thus causing soil CO2 emissions. Agro-ecological service crop could be profitably cultivated to improve soil characteristics and reduce CO2 emissions under Mediterranean environment. Two-year field trials were conducted in central Italy. The treatments were three agro-ecological service crops (hairy vetch, oat, and oilseed rape) and a no-service cover. Plant development, soil characteristics, and CO2 emissions were measured. Oat and oilseed rape showed a rapid growth, while hairy vetch started to grow rapidly only after the cold period. Soil CO2 emissions trend was similar among the agro-ecological service crops and tended to decrease during the cold period, then gradually increased until April when warm temperatures were observed. The high soil CO2 emissions and respiration index observed in hairy vetch probably stimulated mineral nutrients, especially nitrogen, to become more available in the soil compared to oat and oilseed rape throughout the decomposition of soil organic matter. These results confirmed that the cultivation of agro-ecological service crops, especially hairy vetch, could represent a suitable strategy for enhancing carbon sequestration and lead to a mitigation of CO2 emissions during the fallow period and could thus contribute to the climate change mitigation.

Modeling the incorporation of corn (Zea mays L.) carbon from roots and rhizodeposition into soil organic matter

2001 ◽  
Vol 33 (1) ◽  
pp. 83-92 ◽  
Author(s):  
J.A.E. Molina ◽  
C.E. Clapp ◽  
D.R. Linden ◽  
R.R. Allmaras ◽  
M.F. Layese ◽  
...  
Keyword(s):  
Zea Mays ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Zea Mays L
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