scholarly journals Physiological and Yield of Soybean Under Kayu Putih (Melaleuca cajuputi subsp. cumingiana) Stands with N, P, and K Fertilization on Lithic Haplustert

2020 ◽  
Vol 4 (2) ◽  
pp. 99
Author(s):  
Roni Ismoyojati ◽  
Tohari Tohari ◽  
Priyono Suryanto ◽  
Fajrin Pramana Putra
Keyword(s):  
Organic Matter ◽  
Experimental Design ◽  
Leaf Area ◽  
Soil Nutrients ◽  
Photosynthesis Rate ◽  
Low Fertility ◽  
Plant Tissues ◽  
Melaleuca Cajuputi ◽  
Heavy Clay ◽  
K Fertilization

<p>Fertilization of N, P, and K on soybean planted under <em>K</em><em>ayu Putih</em> stands to serve to increase soil nutrients. <em>Lithic Haplustert</em> is a subgroup of Vertisol with a relatively low fertility and organic matter with a heavy clay texture. This research aims to determine the response of soybean to the application of N, P, and K fertilizers on the <em>Lithic Haplustert</em> in physiology and yield. This research was conducted from February to May 2015 in the Srikoyo hamlet, Menggoran village, Playen district, Gunungkidul regency, Yogyakarta. The experimental design is split-split plot with three levels of fertilization of N (0, 25, 50 kg urea ha<sup>-1</sup>), P (0, 150, 300 kg SP-36 ha<sup>-1</sup>), and K (0, 75, 150 kg KCl ha<sup>-1</sup>). The results showed that the application of 50 kg urea ha<sup>-1 </sup>and 300 kg SP-36 ha<sup>-1</sup> can increase the leaf area and photosynthesis rate. Dosage 150 kg KCl ha<sup>-1</sup> fertilizer increased the concentration of N, P, and K in the plant tissues significantly.</p>

scholarly journals Growth of sweet basil depending on nitrogen and potassium doses

2013 ◽  
Vol 31 (3) ◽  
pp. 489-493 ◽  
Author(s):  
Sylvana N Matsumoto ◽  
Germano da S Araujo ◽  
Anselmo Eloy S Viana
Keyword(s):  
Experimental Design ◽  
Potassium Chloride ◽  
Leaf Area ◽  
Total Leaf Area ◽  
Sweet Basil ◽  
Total Leaf ◽  
N Rates ◽  
The Relationship ◽  
Higher Doses ◽  
K Fertilization

The objective of this study, carried out from October to December 2006, was to analyze the effects of increasing doses of nitrogen (N) and potassium (K) as well as the interaction between these elements on the growth of sweet basil plants cultivated under field conditions. The experimental design was split plots, holding in the main plots the N doses and in the subplots the K rates. Doses of 0, 50, 100 and 150 kg ha-1 were established for N and K, applied as urea and potassium chloride, respectively. The seedlings were transplanted to beds, in 40 x 30 cm spacing, and each plot had 24 plants. The evaluations at 45 days after transplanting detected no effect of N levels in stem diameter, Spad index and number of internodes. A quadratic polynomial model was defined for the relationship between N rates and the referred characteristics. A NK interaction for total leaf area was observed, indicating that, on the absence of K fertilization, increasing N doses resulted in higher total leaf area. Higher doses of N decreased total leaf area of plants under greater K doses.

scholarly journals Assessment of Potato Farmland Soil Nutrient Based on MDS-SQI Model in the Loess Plateau

2021 ◽  
Vol 13 (7) ◽  
pp. 3957
Author(s):  
Yingying Xing ◽  
Ning Wang ◽  
Xiaoli Niu ◽  
Wenting Jiang ◽  
Xiukang Wang
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Fertility ◽  
Soil Quality ◽  
Soil Nutrients ◽  
Organic Matter Content ◽  
Soil Nutrient ◽  
Matter Content ◽  
Soil Organic Matter Content ◽  
Farmland Soil

Soil nutrients are essential nutrients provided by soil for plant growth. Most researchers focus on the coupling effect of nutrients with potato yield and quality. There are few studies on the evaluation of soil nutrients in potato fields. The purpose of this study is to investigate the soil nutrients of potato farmland and the soil vertical nutrient distributions, and then to provide a theoretical and experimental basis for the fertilizer management practices for potatoes in Loess Plateau. Eight physical and chemical soil indexes were selected in the study area, and 810 farmland soil samples from the potato agriculture product areas were analyzed in Northern Shaanxi. The paper established the minimum data set (MDS) for the quality diagnosis of the cultivated layer for farmland by principal component analysis (PCA), respectively, and furthermore, analyzed the soil nutrient characteristics of the cultivated layer adopted soil quality index (SQI). The results showed that the MDS on soil quality diagnosis of the cultivated layer for farmland soil included such indicators as the soil organic matter content, soil available potassium content, and soil available phosphorus content. The comprehensive index value of the soil quality was between 0.064 and 0.302. The SPSS average clustering process used to classify SQI was divided into three grades: class I (36.2%) was defined as suitable soil fertility (SQI < 0.122), class II (55.6%) was defined as moderate soil fertility (0.122 < SQI < 0.18), and class III (8.2%) was defined as poor soil fertility (SQI > 0.186). The comprehensive quality of the potato farmland soils was generally low. The proportion of soil nutrients in the SQI composition ranged from large to small as the soil available potassium content = soil available phosphorus content > soil organic matter content, which became the limiting factor of the soil organic matter content in this area. This study revolves around the 0 to 60 cm soil layer; the soil fertility decreased gradually with the soil depth, and had significant differences between the respective soil layers. In order to improve the soil nutrient accumulation and potato yield in potato farmland in northern Shaanxi, it is suggested to increase the fertilization depth (20 to 40 cm) and further study the ratio of nitrogen, phosphorus, and potassium fertilizer.

Multifactorial optimization of the decolorisation parameters of wastewaters resulting from dyeing flowers

2009 ◽  
Vol 59 (7) ◽  
pp. 1361-1369 ◽  
Author(s):  
Edison Gil Pavas ◽  
Miguel Ángel Gómez-García
Keyword(s):  
Hydrogen Peroxide ◽  
Organic Matter ◽  
Experimental Design ◽  
Order Reaction ◽  
Pseudo First Order Reaction ◽  
First Order ◽  
Effluent Standards ◽  
Degradation Of Dyes ◽  
Pseudo First Order ◽  
Dyes Mixture

This work deals with the treatment of the wastewaters resulting from the process of dyeing flowers. In some local cases for growing flowers near to Medellín (Colombia), wastewater color was found to be one of the main problems in meeting local effluent standards. Wastewaters were treated by photodegradation process (which includes photocatalysis) to achieve the degradation of dyes mixture and organic matter in the wastewater. A multifactorial experimental design was proposed, including as experimental factors the following variables: pH, and the concentration of both catalyst (TiO2) and hydrogen peroxide (H2O2). According to the obtained results, at the optimized variables values, it is possible to reach a 99% reduction of dyes, a 76.9% of mineralization (TOC) and a final biodegradability of 0.834. Kinetic analysis allows proposing a pseudo first order reaction for the reduction, the mineralization, and the biodegradation processes.

scholarly journals Relations among Valencia orange yields with soil and leaf nutrients in Northwestern Paraná, Brazil

2000 ◽  
Vol 43 (4) ◽  
pp. 387-391 ◽  
Author(s):  
Jonez Fidalski ◽  
Pedro Antonio Martins Auler ◽  
Valdomiro Tormem
Keyword(s):  
Growing Season ◽  
Fruit Weight ◽  
Soil Samples ◽  
Low Fertility ◽  
High Productivity ◽  
Leaf Nutrients ◽  
Valencia Orange ◽  
Northwest Region ◽  
The Relationship ◽  
K Fertilization

The Valencia orange orchards established on soils of low fertility in the Northwest region of Paraná State, Brazil, have showed symptoms of Mg deficiency and reduced fruit yields. The objective of this study was to verify the relationship between yield with soil and leaf nutrients during 1996/97 growing season. Two sites of low and high productivity were selected in seven orchards. Leaf and soil samples (fertilized rows and interrows) were collected in 1996. The results showed that the citrus yields were negatively related with soil Mg/K and Ca+Mg/K ratios in the fertilized rows, and fruit weight positively correlated with leaf Zn in the low productivity orchards. The fruit weight was positively related with leaf Ca and soil Ca in the fertilized rows of the high productivity orchards. The results suggested an adequate lime and K fertilization managements in the fertilized rows, as well as an adequate Zn supply.

scholarly journals Effect of Botanical Pesticides on Soil Fertility of Coffee-Orchards

2009 ◽  
Vol 9 ◽  
pp. 16-22 ◽  
Author(s):  
Bhanu B. Panthi ◽  
Bhupendra Devkota ◽  
Jyoti U. Devkota
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Soil Nutrients ◽  
Soil Texture ◽  
Insect Pests ◽  
Clay Content ◽  
High Positive Correlation ◽  
Botanical Pesticides ◽  
Agriculture And Environment ◽  
Commercial Crop

Coffee (Coffea arabica; Rubiaceae) is a potential and emerging commercial crop. Coffee is planted in the midhills of Nepal (800 to 1250 meter above mean sea level) in Gulmi and Lalitpur districts. To control the major insect pests of coffee plant, locally prepared ‘jaibik bishadi’ (botanical pesticides) are used as alternatives of the synthetic insecticides. This study was undertaken to see the contribution of ‘jaibik bishadi’ in the fertility of the coffee orchards soil, for which soil samples from botanicals used and not used coffee orchards were collected to see the level of soil characteristics and soil nutrients such as soil texture, organic matter, soil nutrients (phosphorous and potassium). There was some difference in the soil texture of topsoil, but no difference could be seen in sand, silt and clay content of the subsoils from botanical used and not used orchards. The pH was significantly different between botanical used and not used soils, but such difference could not be observed between the topsoil and subsoil from the same sites. Jaibik bishadi used to control the coffee pests significantly contributed in the soil fertility, which could be seen in high positive correlation (r=0.9886) between organic matter and nitrogen in the soil.Keywords: Coffee, jaibik bishadi, topsoil, subsoil, soil fertilityThe Journal of Agriculture and Environment Vol:9, Jun.2008 page: 16-22

scholarly journals Pengaruh Sumber dan Dosis Bahan Organik terhadap Perubahan sifat Kimia Tanah, Pertumbuhan dan Hasil Tanaman Sorgum (Sorghum bicolor L.Moench) var. KD4 di Lahan Kering Jatikerto, Malang

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Nur Edy Suminarti ◽  
A.Y. Edy Guntoro ◽  
A. N. Fajrin
Keyword(s):  
Organic Matter ◽  
Sorghum Bicolor ◽  
Leaf Area ◽  
Chemical Properties ◽  
Dry Weight ◽  
Soil Chemical Properties ◽  
Growth And Yield ◽  
Cow Dung ◽  
Dry Land ◽  
Total Dry Weight

Suminarti et al, 2018. Effect of Source and Dosage of Organic Materials on Changes in Soil Chemical Properties, Growth and Yield of Sorghum Plants (Sorghum bicolor L.Moench) var. KD4 in Dry Land Jatikerto, Malang. JLSO 7(2): Agricultural extensification is the right step to anticipate conditions of food insecurity. This refers to two reasons, namely (1) proliferation of land conversion activities, and (2) sorghum is a carbohydrate-producing plant that is quite tolerant when planted on dry land. The objective of this study was to obtain information about the sources and doses of organic matter that are appropriate to changes in soil chemical properties, growth and yield of sorghum plants, and has been carried out in the dry land of Jatikerto, Malang. A split plot designs with three replications were used in this study, sources of organic material (blothong, UB compost and cow dung) as the main plot, and doses of organic matter (125%, 100% and 75%) as a subplot. Soil analysis was carried out 3 times, i.e. before planting, after application of organic matter and at harvest. The agronomic observations were carried out destructively at 80 days after planting (DAP) including the components of growth (root dry weight, leaf area, and total dry weight of the plant) and harvest at the age of 90 DAP.F test at 5% level was used to test the effect of treatment, while the difference between treatments was based on LSD level of 5%.The results showed that there was a significant interaction between the source and dosage of organic matter on the leaf area and total dry weight, the highest yield was obtained in blothong at various doses. Higher yields of seeds per hectare were also found in blotong: 1.76 tons ha-1, and 1.73 tons ha-1 on 125% doses of organic matter. Blotong application is able to provide elements of N, P and K soil respectively 18.3%, 85.68% and 8.42% for plant.

scholarly journals Carbon isotopic signatures of soil organic matter correlate with leaf area index across woody biomes

2014 ◽  
Vol 102 (6) ◽  
pp. 1606-1611 ◽  
Author(s):  
Brenton Ladd ◽  
Pablo L. Peri ◽  
David A. Pepper ◽  
Lucas C. R. Silva ◽  
Douglas Sheil ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Area Index ◽  
Isotopic Signatures ◽  
Carbon Isotopic

CHEMICAL AND MICROBIOLOGICAL FACTORS IN SOME QUEBEC SOILS

1932 ◽  
Vol 7 (3) ◽  
pp. 300-327 ◽  
Author(s):  
R. R. McKibbin ◽  
P. H. H. Gray
Keyword(s):  
Organic Matter ◽  
Field Data ◽  
Large Area ◽  
Sandy Clay ◽  
Orchard Soil ◽  
Heavy Clay ◽  
Colloidal Matter ◽  
Soil Groups

The major soil groups in a large area of agricultural Quebec have been defined and the primary factors effecting differentiation studied. Organic-matter relations as well as the variations in mineral colloidal matter have determined the groupings adopted. Eight major soil groups are named; viz., heavy clay, sandy clay, lowland podsol, upland podsol, brown earth, orchard soil, lowland muck swamp and upland muck swamp. Chemical and microbiological studies of representative virgin soils within each of the first-named six groups are reported, and field data presented.

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