scholarly journals Response of growth and production of potato plants to application of NPK fertilizer

2021 ◽  
Vol 306 ◽  
pp. 01018
Author(s):  
Lydia E A Tulung ◽  
Mirawanty Amin ◽  
Conny N Manoppo
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Potato Production ◽  
Potato Plants ◽  
North Sulawesi ◽  
Fresh Plant ◽  
Determining Factors ◽  
Randomized Complete Block Design ◽  
Npk Fertilizer ◽  
Npk Fertilization

Fertilizer is one of the determining factors for the success of potato cultivation. Various types of fertilizers have been produced, but those that are suitable for regional conditions in North Sulawesi do not yet exist. The decreasing of potato production in North Sulawesi is due to the limited use of quality and certified seeds, as well as inappropriate fertilizer dosages. This research objective was to see the effect of NPK fertilization on the production of Medians potato plants. The research was conducted from August to December 2020, in Rurukan Village, East Tomohon District, Tomohon City, North Sulawesi. The experimental design used was randomized complete block design (RCBD) with seven treatments, namely the NPK fertilizer dosage of 0 kg ha-1 (P0), 150 kg ha-1 (P1), 300 kg ha-1 (P2), 450 kg ha-1 (P3), 600 kg ha-1 (P4), 750 kg ha-1 (P5) and 900 kg ha-1 (P6). Each treatment was repeated three times and resulting in 21 treatment plots. The results showed that application of NPK fertilizer of 450 kg ha-1 resulted the highest yields on the components of weight of fresh plant, tuber diameter, and potato productivity.

scholarly journals The Effect of Spent Bleaching Earth Filler-Based NPK Fertilization on Proline, Growth and Yield of Maize

2019 ◽  
Vol 35 (1) ◽  
pp. 44
Author(s):  
Ranggi Sumanjaya Purba ◽  
Siti Nurul Rofiqo Irwan ◽  
Eka Tarwaca Susila Putra
Keyword(s):  
Palm Oil ◽  
Agricultural Sector ◽  
Block Design ◽  
Bleaching Earth ◽  
Growth And Yield ◽  
Oil Processing ◽  
Cooking Oil ◽  
Randomized Complete Block Design ◽  
Npk Fertilizer ◽  
Npk Fertilization

Spent bleaching earth (SBE) is by-product of cooking oil processing industry of crude palm oil (CPO). Palm oil industry is growing every year, followed by population growth and consumption of cooking oil so that the greater volume of waste generates SBE. An innovation is needed to anticipate the problem of SBE waste in agricultural sector, dealing with a filler component in the production of NPK fertilizer additives. This study aims to determine proline response, growth and yield of the maize to fertilization NPK with SBE-based filler. The experiments used Randomized Complete Block Design (RCBD) with the treatments of NPK filler (15:15:15) consisting of BC (brown clay), SBE and DBE (deoiled bleaching earth) at a dose of 6 g polybag<sup>-1</sup>. The results showed that the use of SBE gave the same effect on plant height, leaf number, stem diameter and 100-seed weight, but the use of SBE could increase 61.15% of proline activity. SBE can substitute filler on the additional materials of NPK fertilizer.

scholarly journals Effect of Formulation, Binder and Compaction Pressure of Rice Husk-Bagasse Briquettes on Thermal and Physical Properties

2020 ◽  
pp. 38-53
Author(s):  
Kerich K. Daniel ◽  
Zachary O. Siagi ◽  
Julius O. Ogola
Keyword(s):  
Experimental Design ◽  
Physical Properties ◽  
Rice Husk ◽  
Block Design ◽  
Compaction Pressure ◽  
Ignition Time ◽  
Calorific Value ◽  
Significant Rise ◽  
Lake Basin ◽  
Randomized Complete Block Design

Aims: This study investigated the use of agro-wastes for the production of briquettes. It was carried out to investigate the effect of formulation, binder and compaction pressure of rice husk-Bagasse briquettes on thermal and physical properties. Study Design: The experimental design for this study was 6x5x2 Randomized Complete Block Design Place and Duration of the Study: Rice husks and bagasse were collected from Lake Basin Development Authority’s rice mill and Kibos sugar and Allied company respectively. The binders were sourced locally in Kisumu. The study was conducted between March 2019 and February 2020. The fabrication and laboratory analysis were carried out in the engineering and laboratory departments of Kenya Industrial Research and Development institute, Kisumu. Methodology: The experimental design for this study was 6x5x2 Randomized Complete Block Design. This study involved six formulations ratios (0:100, 20:80, 40:60, 60:40, 80:20, 100:0), five compaction pressure levels (108kPa, 180kPa, 253kPa, 325kPa, 397kPa) and two binders (clay, cassava) They were arranged in Randomize Complete Block Design with three replications per experiment. Results: The briquettes bulk density was in the range of 849 to 1001 kg.m−3, while the calorific value ranged from 5.541 kcal/g for 100% Rice husk clay binder to 7.345 kcal/g 20% Rice Husk cassava binder. Briquettes with blend ratio of 40-60% Rice Husk took longer time to burn. Briquette formulations with clay binder had burning rates ranging from 0.28 g/min to 0.15 g/min while with cassava binder from 0.52 g/min to 0.37 g/min. The ignition time of the briquettes ranged from 62 sec to 95 sec with cassava binder and 110 sec to 191sec with clay binder. The shatter index ranged from 0.94 to 0.99 with cassava and 0.9 to 0.98 with clay binder. Conclusion: Higher compaction pressures and use of cassava binder produced stronger briquettes with higher calorific values. Briquettes with higher percentage of bagasse had low ignition time and low bulk densities. The bulk densities and ignition time showed significant rise with increase in the compaction pressure but inversely affected the burning rate. The binder used significantly affected both the thermal and physical properties of all the formulations.

scholarly journals Tuber yield and economic result of ‘Atlantic’ potato in response to NPK fertilizer formulas

2019 ◽  
Vol 37 (4) ◽  
pp. 379-383
Author(s):  
Renato Yagi ◽  
Rogério P Soratto ◽  
Nilceu RX de Nazareno ◽  
Henrique L da Silva ◽  
Alexandre de C Dzierwa
Keyword(s):  
Specific Gravity ◽  
Soil Fertility ◽  
Tuber Yield ◽  
Potato Crop ◽  
Block Design ◽  
Operational Efficiency ◽  
Marketable Tuber ◽  
Randomized Complete Block Design ◽  
Npk Fertilizer ◽  
Fertilizer Rates

ABSTRACT The usual application of high 4-14-8 NPK fertilizer rates in the potato planting furrows, independently of the soil fertility or nutritional cultivar requirements, has become a paradigm in Brazil. However, the 4-14-8 NPK formula does not always meet the crop needs, and can unbalance the availability of nutrients in the soil. The objective of this study was to evaluate the tuber yield and economic results of ‘Atlantic’ potato as affected by rates of 4-14-8 and 6-30-6 NPK formulas applied in the planting furrows. The rates of both NPK formulas were calculated to reach P2O5 rates of 210, 420, and 630 kg ha-1. At each P2O5 rate, the 6-30-6 formula resulted in less 30% N and 65% K2O in the planting furrow compared to 4-14-8 formula. A randomized complete block design in a factorial scheme (2×3)+1, including an unfertilized furrow control, with three replications was used. Only the use of 6-30-6 formula increased the total tuber yield of ‘Atlantic’ potato. The marketable tuber yield reached higher levels (29.8 t ha-1) with higher P2O5 rate (440 kg ha-1) using the 6-30-6 than 4-14-8 formula. The fertilizer rates and formulas NPK did not affect specific gravity of marketable tubers. Therefore, the use of a fertilizer more concentrated in P2O5 that favors smaller contributions of N and K (as the 6-30-6 formula studied in this work) provides lower costs, and greater operational efficiency and profits in relation to the 4-14-8 formula traditionally used for the potato crop.

scholarly journals PENGGUNAAN SENYAWA OSMOLIT DAN ALKALIN PADA PENYADAPAN TANAMAN KARET (Hevea brasiliensis)

2019 ◽  
Vol 3 (2) ◽  
pp. 110-120
Author(s):  
Mochlisin Andriyanto ◽  
Miftahul Huda Fendiyanto
Keyword(s):  
Experimental Design ◽  
Hevea Brasiliensis ◽  
Block Design ◽  
Randomized Complete Block Design ◽  
The Common ◽  
North Sumatra ◽  
Treatment Application

Stimulants are one of the common ways to increase yield in rubber plants. Recent, the stimulant that is widely used in rubber tapping is ethephon. Ethephon material can prolong the flow of latex so that yield increases. The combination of osmolyte and alkaline compounds is expected to be an alternative stimulant. Therefore, this study aimed to examine the use of osmolytes and alkaline in rubber plants. This research was conducted at the Experimental Design of the Sungei Putih Estate Research, Deli Serdang, North Sumatra in May-September 2016 with PB 260 clones planting year 2010 with a tapping system S/2 D3 Ga1.0 6 / y (m) in panel B0-2. The experimental design used was a Randomized Complete Block Design (RCBD) with 28 combinations of treatments. The observation parameters in this study were yield (g/p/s), girth (cm) before treatment application and yield (g/p/s) and yield (kg/ha/year) after treatment application. The observations showed that the addition of stimulants with osmolyte and alkaline compounds had a significant effect yield on rubber (g/p/s) in the first tapping slices. The 5% osmolyte and 10% alkaline compounds have yield rubber which is comparable to the application of stimulants made from ethephon in the first tapping slices. Application of 5% osmolyte and 10% alkaline compounds can be used as an alternative stimulant in rubber plants.

scholarly journals DESEMPENHO DE Lactuca sativa (ALFACE) DIANTE DO AUMENTO DA DENSIDADE DE CULTIVOS CONSORCIADOS EM HORTAS AGROFLORESTAIS

2020 ◽  
Vol 5 (19) ◽  
pp. 202033
Author(s):  
Aruana Vargas Couto ◽  
Arcângelo Loss ◽  
Giorgini Augusto Venturieri
Keyword(s):  
Experimental Design ◽  
Lactuca Sativa ◽  
Dry Matter ◽  
Block Design ◽  
Planting Density ◽  
Species Succession ◽  
De Se ◽  
Randomized Complete Block Design ◽  
Regulation Services ◽  
Over Time

Lactuca sativa (ALFACE) PERFORMANCE DURING INCREASE IN THE DENSITY OF INTERCROPPED IN AGROFOREST GARDENSRENDIMIENTO DE Lactuca sativa (ALFACE) DURANTE EL AUMENTO DE LA DENSIDAD DE LOS CULTIVOS INTERCALADOS EN LOS JARDINES AGROFORESTALESRESUMOFoi realizado um experimento para verificar se a consorciação de um número crescente de cultivos olerícolas, escolhidos de acordo com a lógica da sucessão de espécies no espaço ao longo do tempo, afetaria a produção de matéria seca de Lactuca sativa (alface) em hortas agroflorestais. O delineamento experimental foi em delineamento em blocos casualizados, com um fator em três níveis, e quatro repetições. A eficiência dos consórcios foi estimada pela matéria seca de L. sativa. Os resultados mostraram que o aumento do número de espécies consorciadas e consequente densidade de plantio não influenciou o parâmetro avaliado. Isto evidencia uma vantagem cultural conferida pelos consórcios sucessionais testados, uma vez que foram conduzidos sem a aplicação de insumos sintéticos e tóxicos, além de se obter uma produção de alimentos de qualidade diferenciada dos convencionais e prestar serviços ecossistêmicos de regulação. Não houve perdas produtivas para L. sativa decorrentes do adensamento dos cultivos.Palavras-chave: Agrofloresta; Sucessão Ecológica; Agricultura Sintrópica.ABSTRACTAn experiment was carried out to verify if the intercropping of a growing number of vegetables, chosen according to the logic of species succession over time, would affect the production of dry matter of Lactuca sativa (lettuce) in agroforestry gardens. The experimental design was a randomized complete block design with one factor at three levels and four replications. Consortium efficiency was estimated by L. sativa dry matter. The results showed that the increase of the number of intercropping species and consequent planting density did not influence the evaluated parameter. This evidences a cultural advantage conferred by the successional consortiums tested, since without the application of synthetic and toxic inputs, besides obtaining a production of quality differentiated of food conventional and providing ecosystem regulation services. There were no productive losses for L. sativa due to the densification of crops.Keywords: Agroforestry; Ecological Succession; Syntropic Agriculture.RESUMENSe llevó a cabo un experimento para verificar si el cultivo intercalado de un número creciente de verduras, elegidos de acuerdo con la lógica de sucesión de especies a lo largo del tiempo, afectaría la producción de materia seca de Lactuca sativa (lechuga) en jardines agroforestales. El diseño experimental fue un diseño de bloques completos al azar con un factor en tres niveles y cuatro repeticiones. La eficiencia del consorcio fue estimada por la materia seca de L. sativa. Los resultados mostraron que el aumento del número de especies intercaladas y la consiguiente densidad de siembra no influyeron en el parámetro evaluado. Esto evidencia una ventaja cultural conferida por los consorcios sucesionales probados, ya que se realizaron sin la aplicación de insumos sintéticos y tóxicos, además obtener producción de alimentos de calidad diferenciada de los convencionales y la prestación de servicios de regulación del ecosistema. No hubo pérdidas productivas para L. sativa debido a la densificación de los cultivos.Palabras clave: Agroforestería; Sucesión Ecológica; Agricultura sintrópica. 

scholarly journals Manually Feed NPK Fertigation Improves Growth and Yield of Chili Pepper Hybrids in Ultisol

Akta Agrosia ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 19-26
Author(s):  
Catur Herison ◽  
Rustikawati Rustikawati ◽  
Hasanudin Hasanudin ◽  
Usman K.J. Suharjo ◽  
Merakati Handajaningsih ◽  
...  
Keyword(s):  
Block Design ◽  
Fertilizer Application ◽  
Chili Pepper ◽  
Growth And Yield ◽  
Plastic Mulch ◽  
Dry Land ◽  
Randomized Complete Block Design ◽  
Npk Fertilizer ◽  
Hybrid Cultivar ◽  
Planting Season

Extending the planting area to a less-fertile soil, such as Ultisols, become inevitable choice to increase the national chili pepper production in Indonesia as this types of soil is the largest part of dry land of Indonesia, about 29.7% or around 51 million ha.  However, efforts to increase its productivity by providing sufficient fertilizers application is most frequently inefficient because in the conventional fertilizer applications, broadcasted fertilizer on the soil bed, are not readily available for the plant as their solubility is limited under the plastic mulch and still in the form of granular until the end of planting season.  Fertigation, therefore, maybe the answer for this problem.  The objective of this study was to determine the best NPK fertigation method on four chili pepper hybrids.  The experiment was conducted in a randomized complete block design with three replication, and the treatments were arranged in a split plot design.  As the main plots were NPK fertigation intensity, i.e. 100%, 75%, 50%, 25% and 0% fertigation with the remnant fertilizers were circularly broadcasted surrounding the plant.  As the subplots were chili pepper hybrids, i.e. ‘Maxima’, H39, H14, and ‘UNIB CHR17’.  The results showed that there was no interaction effect of fertigation intensity indicated that all hybrid genotypes showed similar pattern of responses.  The H39 hybrid had better vegetative growth compared to other hybrids in term of plant height, dichotomous height, stem diameter, number of branches, plant fresh-weight.  Whereas the hybrid cultivar ‘Maxima’ showed the highest yield followed by H14 and cultivar ‘UNIB CHR17’.  The 100% fertigation was the best method of NPK fertilizer application for chili pepper in Ultisols.keywowrd: fertigation, chili pepper, fertilizer application, acidic soil

scholarly journals Effect of Post Emergent Herbicides on Centaurea diluta Aiton Infecting Wheat in Ouazzane Region - Morocco

2019 ◽  
pp. 1-5
Author(s):  
B. Hajjaj ◽  
A. El Oualkadi ◽  
H. Tantaoui ◽  
M. Chentouf
Keyword(s):  
Experimental Design ◽  
Research Laboratory ◽  
Block Design ◽  
Soft Wheat ◽  
Wheat Crop ◽  
Randomized Complete Block Design ◽  
Knapsack Sprayer ◽  
Precision Balance ◽  
Tribenuron Methyl

High infestations of Centaurea diluta (Lesser star-thistle) become a serious problem to cereal farmers in Ouazzane region of Morocco. The aim of this study is to investigate the effect of three post-emergent herbicides on C. diluta infestation in a soft wheat crop. The experimental design was Randomized Complete Block Design (RCBD) with three replications. Each block contained 4 elementary plots, 3 plots of which were treated with the three post emergent herbicides and the untreated plots serving as control. Trials were conducted in Ouazzane region of Morocco in January 2017. Treatments were carried out with a knapsack sprayer with the nozzle delivering a 3 bar jet. Calculation of reduction of biomass in C. diluta was carried out at weed research laboratory of INRA-CRRA Tangier in March 2017 using an oven at 75ºC for 48 hours. The weights were then taken using a precision balance. A quadrant of 1 m2 was used to calculate the reduction of density in C. diluta. Results showed that treatment with Aminopyralid + Florasulam at (9.9 + 4.95) g/ha and 2,4-D at 600 g/ha  gave the best control of  C. diluta infestations. In fact, Aminopyralid + Florasulam at (9.9+4.95) g/ha recorded 88±4.1%, 86±5.1% and 97±1.6% respectively on reduction of density, height and biomass in C. diluta. 2,4-D at 600 g/ha recorded 75±3.1%, 84±4.2% and 94±2.5% respectively on reduction of density, height and biomass in C. diluta. Tribenuron-methyl at 9.50 g/ha recorded the lowest efficacies recording 25±4.9%, 21±4.8% and 37±8.1% respectively on reduction of density, height and biomass in C. diluta. Thus, Aminopyralid + Florasulam at (9.9+4.95) g/ha and 2,4-D at 600 g/ha could be recommended to farmers in Ouazzane region when C. diluta infestation is dominant on wheat. A further assessment of Aminipyralid and Florasulam residues in soil and their phytotoxicities should be evaluated on other crops grown in rotations.

scholarly journals PENGARUH DOSIS PUPUK NPK TERHADAP PERTUMBUHAN DAN HASIL BAWANG MERAH, KABUPATEN JAYAPURA, PAPUA

2019 ◽  
Vol 44 (2) ◽  
pp. 163
Author(s):  
Rohimah Handayani Sri Lestari ◽  
Fransiskus Palobo
Keyword(s):  
Population Growth ◽  
Plant Height ◽  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Plot Size ◽  
Treatment Dose ◽  
Randomized Complete Block Design ◽  
Npk Fertilizer ◽  
Almost All

Shallots is one of the important commodities in Indonesia. Demand for these commodities always increases along with population growth. To fulfill this demand, the production of shallots must always be increased. One way to increase the production of shallots is by fertilizing. This study aims to determine the dosage of NPK fertilizer which gives the best results for the growth and yield of shallots. The study was carried out in Sentani District, Papua Province, from November 2016 until March 2017.The study used the Randomized Complete Block Design (RCBD) with three treatments NPK Phonska fertilization (NPK 15-15-15 composition) and four repplication. NPK fertilizer used were: 1) NPK 300 kg/ha, 2) 250 kg/ha, and 3) 200 kg/ha. The meterials used were shaloot bulbs Keta Monca cultivar. The plot size was 1 x 5 m, with a spacing of 15 x 15 cm. NPK fertilizer was given at the age of 14 and 30 days after planting respectively with the dose of ½. The variables observed were plant height, leaf number, bulbs number per sample, diameter of bulbs, dry weight bulb per hectare The results showed that the treatment of NPK fertilizer dosage did not give a significant effect on almost all observation variables except on the dry weight of eskip bulb, where the treatment dose of 200 kg/ha NPK fertilizer gave the highest yield compared to other treatments. When observed from the growth components and production components, the dose of NPK fertilizer 200 kg/ha is the most consistent to provide better growth and yield.

scholarly journals Chicken Manure and Phosphorus Influence on Biomass Production and Chemical Composition of the Essential Oil of Ocimum kilimandscharicum

2020 ◽  
Vol 12 (10) ◽  
pp. 77
Author(s):  
Vânia Tomazelli de Lima ◽  
Maria do Carmo Vieira ◽  
Anelise Samara Nazari Formagio ◽  
Néstor Antonio Heredia Zárate ◽  
Claudia Andrea Lima Cardoso ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Experimental Design ◽  
Essential Oil ◽  
Biomass Production ◽  
Mass Production ◽  
Block Design ◽  
Dry Mass ◽  
Chicken Manure ◽  
Randomized Complete Block Design ◽  
Fresh And Dry Mass

The effects of soil incorporation of five rates of semi-decomposed chicken manure (0, 5, 10, 15 and 20 t ha-1), with and without the addition of phosphorus (200 kg P2O5 ha-1) on biomass production and chemical composition of the essential oil from leaves of African blue basil were evaluated. The experimental design was a randomized complete block design in a 5 &times; 2 factorial scheme, with four replicates. The first cut of plants was performed at 70 days after transplanting (DAT) and the second at 140 DAT. The addition of 20 t ha-1 of chicken manure to the soil induced increase in plants height, fresh and dry mass production and yield of essential oil. The use of chicken manure induced an increase in camphor content and decreased content of 1,8 cineole. After regrowth, biomass production of African blue basil was higher when compared to the first cut.

scholarly journals Interaction between thidiazuron and Azospirillum brasilense on yield characteristics and productivity of rice

2019 ◽  
Vol 23 (4) ◽  
pp. 244-249 ◽  
Author(s):  
Fernando de S. Buzo ◽  
Lucas M. Garé ◽  
Orivaldo Arf ◽  
José R. Portugal ◽  
Flavia C. Meirelles ◽  
...  
Keyword(s):  
Experimental Design ◽  
Azospirillum Brasilense ◽  
Foliar Application ◽  
Upland Rice ◽  
Block Design ◽  
Rice Cultivar ◽  
Crop Productivity ◽  
Randomized Complete Block Design ◽  
Individual Effects ◽  
Upland Rice Cultivar

ABSTRACT In rice, the use of the bacterium Azospirillum brasilense has shown to be very useful for the crop, being able to increase the final productivity of the same or reduce the need for nitrogen in topdressing. It has recently been noted that there are other regulators that perform other functions, such as thidiazuron (TDZ), a cytokinin-like substance that has been shown to significantly increase upland rice productivity. Thus, the present work aimed to verify the effect of the interaction between the foliar application of A. brasilense and thidiazuron doses applied at the occasion of the tillering of the plants on the productive aspects and crop productivity. The experiment was carried out in the agricultural years of 2015/16 and 2016/17, at the UNESP Teaching, Research and Extension Farm belonging to the Engineering Faculty of Ilha Solteira - UNESP, located in the municipality of Selvíria, MS. The experimental design was a randomized complete block design with a 2 x 4 factorial scheme with four replicates. The treatments were the combination of the presence or absence of A. brasilense foliar application with doses of TDZ (0, 0.5, 1.0 and 1.5 g ha-1) applied to upland rice cultivar BRS Esmeralda. Based on the results obtained for plant height, number of panicles per square meter, total number of grains and fertility of spikelets, mass of 100 grains and grain yield, it was concluded that, in the two agricultural years observed, there were no interaction and individual effects of the foliar application of the bacteria, and of the TDZ doses used at the time of tillering in the BRS Esmeralda cultivar.

Sign in / Sign up

Export Citation Format

Share Document