Macronutrient contents in rose crops under salinity levels  and nitrogen:potassium ratios

Rose crops under fertigation in a protected environment is an alternative for production increase. However, the high dosages of fertilizers can lead to the salinization of soils in this environment. The aim of this study was to evaluate the effect of salinity caused by the excess of fertilizer application through fertigation associated with different nitrogen: potassium (N: K) ratios on macronutrient contents in rose crops. The study was performed in a randomized block design, arranged in a factorial scheme (5 x 3 + 1), with four repetitions, totaling 64 plots. The treatments were formed by combination of five initial levels of electrical conductivity (EC: 1.2; 2.3; 3.3; 4.3 e 5.5 dS m-1), three nitrogen: potassium (N: K) ratios (2:1; 1:2 and 1:3) and a control with N: K ratio (1: 1). Contents of N, K, Ca, Mg and S were evaluated in the stem, leaves and flowers. The levels of N, K, P, Ca and Mg in plant tissues are affected by the treatments at 245 days after transplanting. Leaves presented the highest levels of macronutrients, mainly nitrogen. TDR probe is a satisfactory tool in the management of fertigation.

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Salinity and nitrogen doses in the production and oil content of castor bean

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n6supl2p2851 ◽

2019 ◽

Vol 40 (6Supl2) ◽

pp. 2851

Author(s):

Allan Nunes Alves ◽

Hans Raj Gheyi ◽

José Amilton Santos Junior ◽

Fernando José da Silva Junior ◽

Frederico Antônio Loureiro Soares ◽

...

Keyword(s):

Electrical Conductivity ◽

Brackish Water ◽

Oil Content ◽

Ricinus Communis ◽

Block Design ◽

Fruit Weight ◽

Nitrogen Levels ◽

Randomized Block Design ◽

Ricinus Communis L ◽

Salinity Levels

The proper management of irrigation and mineral nutrition is critical to the success of crops, especially crops grown under salt stress conditions. The objective of this study was to evaluate the production and oil content of castor plants (Ricinus communis L.) irrigated with brackish water with different salinity levels (0.6, 1.6, 2.6, 3.6, and 4.6 dS m-1) and grown under different nitrogen levels (50, 75, 100, 125, and 150 mg of N kg-1 soil). These treatments were arranged in a completely randomized block design with a 5 ? 5 factorial scheme and three repetitions, totaling 75 experimental units. The interaction effect between salinity levels and nitrogen levels affected fruit weight per plant and oil content, and irrigation with brackish water with an electrical conductivity starting at 0.6 dS m-1 reduced the number of racemes per plant, number of fruits, and the weight of fruits and seeds.

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Total soil electrical conductivity and critical soil K+ to Ca2+ and Mg2+ ratio for potato crops

Scientia Agricola ◽

10.1590/s0103-90161999000400030 ◽

1999 ◽

Vol 56 (4) ◽

pp. 993-997 ◽

Cited By ~ 6

Author(s):

Roberto Anjos Reis Jr. ◽

Paulo Cezar Rezende Fontes ◽

Júlio Cesar Lima Neves ◽

Nerilson Terra Santos

Keyword(s):

Electrical Conductivity ◽

Tuber Yield ◽

Block Design ◽

Fertilizer Application ◽

Linear Increase ◽

Potassium Fertilizer ◽

Total Electrical Conductivity ◽

Randomized Block Design ◽

K Fertilizer ◽

Set Up

Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato. Potassium was applied at six different rates (0, 60, 120, 240, 480 and 960 kg ha-1 of K2O), as K2SO4, and was placed during planting time in the furrow. Soil from the 0-200 mm layer was collected in the furrow, 20 and 48 days after plant emergence (DAE) to evaluate soil pH, K+, Ca2+ and Mg2+ contents and the total electrical conductivity (EC). A factorial design (6x2), with six K rates and two sampling times was set up in a randomized block design with four replications. The application of K fertilizer increased exchangeable K, did not affect pH and exchangeable Ca and Mg contents, but caused a linear increase of the soil K+/(Ca2++Mg2+)1/2 ratio as well as EC. At 20 DAE, the critical soil K+/(Ca2++Mg2+)1/2ratio and the EC associated with maximum tuber yield (30.5 Mg.ha-1, with 353.4 kg ha-1 of K2O) were 1.79 and 1.6 dS m-1, respectively. The highest soil K+/(Ca2++Mg2+)1/2 ratio and EC were obtained with the highest application of K fertilizer, which led to a reduction in the potato tuber yield.

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Serapan Hara N, P, K dan Pertumbuhan Tanaman Jagung Pada Berbagai Dosis Pupuk Anorganik dan Organik di Tanah Inceptisol

Jurnal Sains Teknologi & Lingkungan ◽

10.29303/jstl.v0i0.245 ◽

2021 ◽

pp. 55-66

Author(s):

Mulyati Mulyati ◽

Baharuddin AB ◽

R Sri Tejo Wulan

Keyword(s):

Plant Growth ◽

Nutrient Uptake ◽

Agronomic Traits ◽

Block Design ◽

Organic Fertilizer ◽

Fertilizer Application ◽

Organic Fertilizers ◽

Randomized Block Design ◽

Two Factors ◽

Inorganic And Organic

The use of inorganic fertilizers has an important role in increasing plant growth and production. But it also causes various problems such as decreasing soil organic matter, soil acidity, soil degradation, nutrient imbalance and increasing environmental pollution. Therefore, it needs to be balanced with the provision of organic fertilizers. A field experiment was conducted to study the effect of application of various doses of inorganic and organic fertilizers on N, P, K nutrient uptake and maize plant growth. The experimental design used was a randomized block design arranged in a factorial manner consisting of two factors. The first factor is the dose of inorganic fertilizer (A): 0, 150 and 300 kg ha-1 phonska and the second factor is organic fertilizer plus (P): 0, 10, 20 tons ha-1. The two factors were combined and each treatment combination was repeated three times. The data obtained were analyzed by analysis of variance at the 5% level of significance. The results showed that there was no interaction between the application of inorganic and organic fertilizers on the growth and nutrient uptake of N, P and K. However, the application of inorganic and organic fertilizers had a significant effect on all tested agronomic traits except for plant height. Nutrient uptake of N, P and K also increased significantly due to the application of inorganic and organic fertilizers. The balance of inorganic and organic fertilizer application increases the availability of nutrients as well as the uptake of N, P, and K nutrients by maize plants.

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Cekaman Garam NaCl danTeknik Aplikasi Azolla pada Tanaman Padi

Jurnal Ilmu Pertanian Indonesia ◽

10.18343/ipi.25.3.349 ◽

2020 ◽

Vol 25 (3) ◽

pp. 349-355

Author(s):

Fitri Krismiratsih ◽

Sugeng Winarso ◽

Slamerto Slamerto

Keyword(s):

Salt Stress ◽

Block Design ◽

Ground Cover ◽

Dry Weight ◽

Soil Conditions ◽

Application Technique ◽

Rice Plants ◽

Root Dry Weight ◽

Randomized Block Design ◽

Salinity Levels

Efforts to increase production potential can be carried out by extensification in a less productive saline land. Salinity is a major problem in the growth of most plants. Azolla is a plant that is sensitive to salinity, but if it is applied well, it can grow optimally at high salinity levels. The purpose of this study is to obtain an azolla application technique that is effective in increasing the adaptation of rice plants to NaCl saline soil conditions. The experimental design used was Randomized Block Design (RBD) with 2 factors and 3 replications. The first factor was the azolla application technique consisted of 3 levels: fresh azolla composted, fresh azolla immersed, and fresh azolla as a ground cover. The second factor was the levels of NaCl salt stress consisted of 4 levels: control DHL 0, 2, 4, and 8 dS m-1. The adaptation ability of rice plants based on variable plants height growth rate, number of tillers, strove dry weight, root dry weight, stomata density, leaf chlorophyll (SPAD), age of flowering, number of paddy grain, and harvest index. The results showed how to test content up to 2 dS m-1 which increased rice growth especially the application of azolla composted. Increasing stress to 4 and 8 dS m-1showed bad effects on vegetative, physiology, and yields of rice components. The stronger of salt stress the higher all plants growth variables except the age of flowering that actually showed the acceleration of flowering. Application of composted azolla can increase the root dry weight and azolla as a ground cover can increase the numbers of paddy grains. Keywords: azolla, NaCl, rice, stress

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The Response of Fordhook Giant / Swisschard (Beta vulgaris var Cicla) and Mustard (Brassica Juncea) Spinach Vegetables to Irrigation with Saline Water

Asian Journal of Advances in Agricultural Research ◽

10.9734/ajaar/2020/v14i330133 ◽

2020 ◽

pp. 20-26

Author(s):

M. V. Dlamini ◽

M. T. Masarirambi

Keyword(s):

Plant Height ◽

Irrigation Water ◽

Saline Water ◽

Block Design ◽

Water Source ◽

Saline Irrigation ◽

Randomized Block Design ◽

Salinity Levels ◽

Number Of Leaves ◽

The University

Saline irrigation water is becoming an important water source as fresh water is fast becoming a scarce resource in many areas of the world, including Eswatini, especially in arid and semi-arid regions. A study to test the response of two varieties of spinach (fordhook giant and mustard) to salinity was conducted in a field pot experiment at the Faculty of Agriculture at the Luyengo Campus of the University of Eswatini. The treatments were laid in a randomized block design (RCBD). The experiment consisted of four treatments, each replicated twelve times. Treatments were salinity levels of 0.0 dS/m, 1.5 dS/m, 2.0 dS/m and 3.5 dS/m. All the treatments were subjected to similar agronomic practices. Spinach was grown and observed for a period of five weeks. Plant height was measured and the number of leaves counted weekly throughout the experiment. Significant differences (P < 0.05) between salinity treatments were obtained for plant height beginning in week 2 but were more pronounced in week 3, 4 and week 5. No significant differences were obtained for the number of leaves. There were however, clear significant differences between spinach irrigated with none saline irrigation water compared to saline irrigation water. It was concluded that irrigating spinach with saline water of more than 2.0 dS/m drastically reduce plant growth but not the number of leaves under the conditions of the experiment.

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Respons Pertumbuhan dan Rendemen Minyak Klon Nilam (Pogostemon cablin Benth) terhadap Aplikasi Berbagai Dosis Urea (Growth Response And Yield Of Patchouli Clones (Pogostemon Cablin Benth) On Dose Urea Various Applications)

Jurnal Agro Industri Perkebunan ◽

10.25181/jaip.v8i2.1376 ◽

2020 ◽

pp. 109-119

Author(s):

Retno Ayu Diah Pangestu ◽

M. Tahir ◽

Fatahillah Fatahillah

Keyword(s):

Block Design ◽

Dry Weight ◽

Optimal Dose ◽

Fertilizer Application ◽

Control Treatment ◽

Randomized Block Design ◽

Best Response ◽

Pogostemon Cablin ◽

Wet Weight ◽

The Right

Patchouli (Pogostemon cablin Benth) is a plant that produces essential oils and important foreign exchange earner for Indonesia. Using superior clonesÂ with the right fertilizer application will increase the yield of patchouli oil. The research aims to obtain patchouli plants that have the best response of urea fertilization application and optimum dosage of urea for patchouli plant growth. The study was conducted at the Politeknik Negeri lampungâ€™s teaching farm in December 2018 until May 2019. The experiment was conducted using a factorial randomized block design (RBD), consisting of two treatment factors, namely the type of urea clone. The first factor is the type of clone consisting of 2 levels, namely NPL 9 clone and Lhokseumawe clone. The second factor is the treatment of urea doses consisting of 4 levels, namely control, 250 kg.ha-1, 300 kg.ha-1, and 350 kg.ha-1. Variables observed included plantâ€™s height, bough, diameter, number of leaves, stalk angle, chlorophyll content, wet weight of plant, wind dry weight of plant, and yield. The results of research showedÂ NPL 9 clone had a superior appearance and 350 kg.ha-1 of urea doseÂ was the optimal dose compared to other doses and could increase patchouli yield 2,3% compared to the control treatment.

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PENGARUH ASAM FULVAT TERHADAP PERTUMBUHAN, PRODUKTIVITAS, DAN MUTU RIMPANG JAHE

Jurnal Penelitian Tanaman Industri ◽

10.21082/jlittri.v7n1.2001.6-10 ◽

2020 ◽

Vol 7 (1) ◽

pp. 6

Author(s):

MUHAMAD DJAZULI ◽

IRENG DARWATI ◽

ROSITA SMD

Keyword(s):

Fulvic Acid ◽

Starch Content ◽

Block Design ◽

Organic Fertilizer ◽

Dry Weight ◽

Fertilizer Application ◽

Randomized Block Design ◽

Application Frequency ◽

Optimal Effect

Fulvic acid is an extraction product of humus which is very potential for supplement fertilizer and able to reduce either inorganic or organic fertilizer application. The information about fulvic acid application as supplement fertilizer on ginger in Indonesia is still limited. The objective of the study was lo find oul the efect of fulvic acid as supplement fertilizer on the growth, productivity and quality of young ginger. A green house trial was conducted from July lo November 1996. Five levels of fulvic acid concentration, 0, 2.5, 5, 7.5, and 10% were sprayed every week from 4 to 1 5 weeks ater planting (WAP). A randomized block design was used with five replicates. The results indicated that the growth of plant height and number of tiller of ginger increased rapidly al 8 WAP, then il became slowly from 12 lo 1 5 WAP Application 10% of fulvic acid was able to increase vegetative parts 99.6%, fresh and dry weight of rhizome 89 and 125% respectively, and starch content of rhizome 22.6%. To find oul of the optimal effect of fulvic acid on productivity and quality of ginger, a further research using higher level and application frequency of fulvic acid as an extract product from several humus types in Indonesia is needed.

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Application of Dosage Combinations of Evagrow Biofertilizer and Chemical Fertilizer on Soil Characteristics, Growth and Yield of Rice

Advances in Tropical Biodiversity and Environmental Sciences ◽

10.24843/atbes.2017.v01.i01.p01 ◽

2017 ◽

Vol 1 (1) ◽

pp. 1

Author(s):

I Nyoman Merit ◽

I Wayan Narka ◽

Tatiek Kusmawati

Keyword(s):

Oryza Sativa ◽

Block Design ◽

Fertilizer Application ◽

Soil Characteristics ◽

Chemical Fertilizer ◽

Growth And Yield ◽

Chemical Fertilizers ◽

Yield Parameters ◽

Randomized Block Design ◽

Biological Fertilizer

Research on the effect of dosage combination of Evagrow bio-fertilizer and chemical fertilizers on soil properties, growth and yield of rice has been carried out in the glasshouse, Faculty of Agriculture, Udayana University using factorial experiment with a Randomized Block Design (RBD). The first factor is Evagrow bio-fertilizer in 3 level, i.e. E0 (without bio-fertilizers), E1 (5 g bio-fertilizer/L) E2 (10 grams bio-fertilizer/L). The second factor is chemical fertilizer, which consists of 3 levels: K0 (without chemical fertilizers), K1 (150 kg Urea/ha + 75 kg SP36/ha + 37.5 kg KCl/ha), K2 (300 kg Urea/ha + 150 kg SP36/ha + 75 kg KCl/ha). The results showed that chemical fertilizers give a significant and very significant effect on most of the rice growth and yield parameters. The application of chemical fertilizers K1 and K2 increased yield of dry grain harvest to 52.87% and 102.54% compared to controls. Application of Evagrow bio-fertilizer did not significantly increase growth and yield of rice. There is no interaction between chemical fertilizers and Evagrow bio- fertilizer. Similarly to some of the soil characteristics, biological fertilizer and chemical fertilizer application did not show significant effect on most of the soil characteristics, except on salt levels.Keywords: Evagrow Biofertilizer, Inorganic Fertilizer, Oryza Sativa

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Effects of 3,4-dimethylphyrazole phosphate-added nitrogen fertilizers on crop growth and N2O emissions in Southern Italy

Plant Soil and Environment ◽

10.17221/362/2013-pse ◽

2013 ◽

Vol 59 (No. 11) ◽

pp. 517-523 ◽

Cited By ~ 4

Author(s):

L. Vitale ◽

L. Ottaiano ◽

F. Polimeno ◽

G. Maglione ◽

U. Amato ◽

...

Keyword(s):

Southern Italy ◽

Pore Space ◽

Block Design ◽

Nitrification Inhibitor ◽

Fertilizer Application ◽

Crop Growth ◽

Nitrogen Fertilizers ◽

Control Treatment ◽

Soil N ◽

Randomized Block Design

The effect of the nitrification inhibitor 3,4-dimethylphyrazole phosphate (DMPP) on N-fertilized crop growth and soil N2O emissions were studied at two experimental sites in Southern Italy, characterised by a Mediterranean climate and different soil texture. The experiments were a randomized block design of two treatments: crop fertilized with NH4NO3 (considered the control treatment) or amended with DMPP plus NH4NO3 (considered the DMPP treatment). ANOVA was performed to assess differences between treatments and fertilization periods whereas simple and multiple linear regressions were performed in order to assess the effect of the soil-related in-dependent variables on soil gases emissions. Growth of potato plants fertilized with DMPP-added nitrogen was enhanced compared to control plants, whereas no benefit on maize plants grown during summer was observed. N2O emissions measured from soil to potato after the first fertilization with DMPP-added nitrogen was reduced during winter, but was higher than control after the second fertilizer application in spring, leading to comparable N2O emission factors (EF1) between treatments. In maize N2O emissions and EF1 were lower for DMPP compared to control treatment. The effectiveness of reduction in soil N2O emission was influenced by soil temperature and water-filled pore space (WFPS) in both experimental sites. However, the overall effect of WFPS was contrasting as N2O emissions were decreased in potato and enhanced in maize.

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Effect of integrated nutrient management on baby corn (Zea mays L.)

Agricultural Science Digest - A Research Journal ◽

10.18805/asd.v36i4.6470 ◽

2016 ◽

Vol 36 (4) ◽

Author(s):

V. R. Jinjala ◽

H. M. Virdia ◽

N. N. Saravaiya ◽

A. D. Raj

Keyword(s):

Nutrient Management ◽

Block Design ◽

Fertilizer Application ◽

Black Soil ◽

Chemical Fertilizer ◽

Growth And Yield ◽

Integrated Nutrient Management ◽

Yield Attributes ◽

Randomized Block Design ◽

Fodder Yield

A field experiment was conducted during rabi season of 2011-12 on heavy black soil to study the effect of integrated nutrient management on growth and yield of baby corn. The treatments comprising all possible combinations of five levels of nitrogen (chemical and vermicompost fertilizer) with and without bio-fertilizer (Azotobacter and PSB) were laid out in randomized block design with three replications. These were significantly higher with application of 100% RDN from chemical fertilizer with bio-fertilizer over 100% RDN from vermicompost. The cob and fodder yields significantly differed with different integrated nutrient management treatment. Significantly the higher growth and yield attributes yield and fodder yield were recorded with the application of 100% RDF from chemical fertilizer with bio-fertilizer. Application of 100% RDN from chemical fertilizer with biofertilizer was recorded higher net returns over 100% RDN from vermicompost (Rs. 220775/ha) and BCR (12.54).

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