NANOPARTICULADO NO FORNECIMENTO DE Ca E Mg NA CULTURA DO CAFÉ VIA FERTIRRIGAÇÃO

Das tecnologias usadas para aumentar a produtividade e a rentabilidade das culturas agrícolas, a calagem e adubação do solo se destacam entre as principais. Assim a necessidade de encontrar corretivos e fertilizantes com mais eficiência e menos onerosos caracteriza a realidade da agricultura brasileira. Além do calcário, outros materiais corretivos vêm surgindo como opção de uso. Esse trabalho teve como objetivo avaliar a eficiência da tecnologia de nanoparticulado na correção da acidez do solo e fornecimento do Ca e Mg, sendo este produto avaliado em análise de duas fontes de variação: D - diferentes doses do produto recomendado e P - parcelamento da dosagem ou intervalo de aplicação. Cada fonte de variação apresentando quatro 4 tratamentos, sendo eles: D1 – dose 5 l.ha-1; D2 – dose 10 l.ha-1; D3 – dose 15 l.ha-1 e D4 - dose 18 l.ha-1 para D. E P1 - uma parcela; P2 - duas parcelas (aplicação a cada 6 meses); P3 - três parcelas (aplicação a cada 4 meses) e P4 - quatro parcelas (aplicação a cada 3 meses) para P. O Delineamento estatístico do experimento foi em Blocos Casualizados (DBC), com arranjo fatorial em faixas (“strip-plot”) dos 16 tratamentos, 3 repetições por tratamento, totalizando 48 parcelas experimentais. Os resultados obtidos com tecnologia do nanoparticulado testado, nas dosagens de 10 a 15 l.ha-1, em 2 a 3 aplicações ao ano, tem efeitos positivos e suficientes para suprir as demandas de Ca2+ e Mg2+ no solo e na planta para cultura do café conilon, no período de um ano agrícola e nas condições de cultivo.PALAVRA-CHAVES: Calagem, Adubação, Nanopartículas. NANOPARTICULATE IN THE SUPPLY OF Ca AND Mg IN COFFEE CULTURE VIA FERTIRRIGATIONABSTRACT: Of all technologies used to increase productivity and profitability of agricultural crops, soil liming and fertilization stand out among the main ones. Thus, the need to find correctives and fertilizers less costly and more efficient characterizes the reality of Brazilian agriculture. The objective of this work was to evaluate the efficiency of the nanoparticulate technology in the correction of soil acidity and the supply of Ca and Mg. , The technology was assessed by analyzing two sources of variation: D - different rates of the product recommended; and P - splitting the rate or application frequency. Each source of variation was subjected to 4 (four) treatments: D1 - 5 l ha-1; D2 - 10 l ha-1; D3 15 l ha-1, and D4 18 l ha-1 for rates D; and P1 – one split; P2 - two splits (application every 6 months); P3 - three splits (application every 4 months); and P4 - four splits (application every 3 months) for split frequency P. The experiment was arranged in a factorial strip-plot randomized block design (RBD), with 16 treatments and 3 replicates per treatment, totaling 48 experimental plots. Dosages of 10 to 15 l ha-1 , in 2 to 3 applications per year, had positive and sufficient effects to supply the demands of Ca2+ and Mg2+ for Conilon coffee crop , during an agricultural year and in the study cultivation conditions.KEYWORDS: Liming, Fertilization, Nanoparticles.

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RESIDUAL DE NANOPARTICULADO NA CORREÇÃO DO SOLO E NPK NA CULTURA DO CAFÉ

ENERGIA NA AGRICULTURA ◽

10.17224/energagric.2017v32n4p316-321 ◽

2017 ◽

Vol 32 (4) ◽

pp. 316

Author(s):

Waylson Zancanella Quartezani ◽

Estevão Morgan Uliana ◽

Jean Barros Souza ◽

Evandro Chaves Oliveira ◽

Ramon Amaro de Sales

Keyword(s):

Block Design ◽

Split Application ◽

Fertilizer Use ◽

Randomized Block Design ◽

Sources Of Variation ◽

Use Efficiency ◽

Application Frequency ◽

Split Frequency ◽

Experimental Plots ◽

Npk Fertilization

A maior parte das lavouras de café brasileiras estão localizadas em solos ácidos, onde pode-se observar baixos teores de macronutrientes, e grande quantidade de alumínio trocável, que vem a afetar o desenvolvimento dos cafeeiros, e por consequência afetando a absorção de nutrientes e água. Esse trabalho teve como objetivo avaliar a eficiência da tecnologia de nanoparticulado na correção do solo e NPK, buscando a dosagem e parcelamento de aplicação correta para maior eficiência. O Delineamento estatístico do experimento foi em Blocos Casualizados (DBC), com arranjo fatorial em faixas (“strip-plot”) dos 16 tratamentos, 3 repetições por tratamento, totalizando 48 parcelas experimentais. A tecnologia foi avaliada em análise de duas fontes de variação: D - diferentes doses do produto recomendado e P - parcelamento da dosagem ou intervalo de aplicação. Cada fonte de variação apresentando 4 (quatro) tratamentos, sendo eles: D1 – dose 5 l.ha-1; D2 – dose 10 l.ha-1; D3 – dose 15 l.ha-1 e D4 - dose 18 l.ha-1 para D. E P1 - uma parcela; P2 - duas parcelas (aplicação a cada 6 meses); P3 - três parcelas (aplicação a cada 4 meses) e P4 - quatro parcelas (aplicação a cada 3 meses) para P. A tecnologia de nanoparticulado testado, nas dosagens de 10 a 15 l.ha-1, em 2 a 3 aplicações ao ano, mostraram efeitos positivos e suficientes para suprir as necessidades de correções da acidez do solo, para cultura do café conilon, no período de um ano agrícola e nas condições de cultivo.PALAVRA-CHAVES: Calagem, Fertirrigação, Parcelamento NANOPARTICLE RESIDUAL IN SOIL CORRECTION AND NPK FERTILIZATION OF COFFEEABSTRACT: Most of Brazil’s coffee is grown in acidic soils, with low macronutrient concentrations and high exchangeable aluminum, which affect the development of coffee trees and, hence, the absorption of nutrients and water. The objective of this study was to evaluate the efficiency of the nanoparticle technology in the soil correction and NPK fertilization, seeking the adequate rate and split application frequency to increase fertilizer use efficiency. The experiment was arranged in a factorial strip-plot randomized block design (RBD), with 16 treatments and 3 replicates per treatment, totaling 48 experimental plots. The technology was assessed by analyzing two sources of variation: D - different rates of the product recommended; and P - splitting the rate or application frequency. Each source of variation was subjected to 4 (four) treatments: D1 - 5 l ha-1; D2 - 10 l ha-1; D3 15 l ha-1, and D4 18 l ha-1 for rates D; and P1 – one split; P2 - two splits (application every 6 months); P3 - three splits (application every 4 months); and P4 - four splits (application every 3 months) for split frequency P. The use of the nanoparticle technology at the rates of 10 to 15 l ha-1 in 2 to 3 split applications per year provided positive and adequate effects to meet the acidity correction requirements for Conilon coffee crop, during an agricultural year and in the study cultivation conditions.KEYWORDS: Liming, Fertigation, Split application.

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Diallel analysis of maize resistance to Phaeosphaeria maydis

Scientia Agricola ◽

10.1590/s0103-90162004000100007 ◽

2004 ◽

Vol 61 (1) ◽

pp. 36-42 ◽

Cited By ~ 7

Author(s):

Herberte Pereira da Silva ◽

José Roberto Moro

Keyword(s):

Disease Severity ◽

Block Design ◽

Genetic Resistance ◽

Diallel Analysis ◽

Inbred Lines ◽

Randomized Block Design ◽

Whole Plant ◽

Sources Of Variation ◽

Specific Hybrid ◽

Additive Genetic Effects

In breeding programs directed towards genetic resistance against diseases, the estimation of genetic parameters that control resistance allows the introduction of resistance into suscetible germplasm to be clearly focused. The purposes of this study were to estimate heterosis effects, and the general (GCA) and specific (SCA) combining abilities by using two rating methods for resistance to Phaeosphaeria maydis in a diallel analysis of 36 F1 maize hybrids and their nine inbred lines. Trials were conducted in three environments. Disease severity was evaluated in the whole plant (PI) and in the leaf positioned just below the point of insertion of the main ear (AFA). The trials followed a randomized block design with plots represented by a 5 m long rows. Differences among combining ability estimates for different environments and in both evaluation methods showed significant effects (P < 0.01) for environment (E), GCA, and GCA × E. The SCA, and SCA × E effects were not significant for any of the disease severity variables. The GCA effects were more important than SCA for this set of inbred lines, suggesting that additive genetic effects are the most important sources of variation for this trait. Heterosis effects for resistance were estimated, and it was possible to identify specific hybrid combinations between lines which have high potential for genetic control of this pathogen. Results for both disease severity variables were practically identical, even though the PI method was more convenient to use.

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Jatropha press cake as organic fertilizer in lettuce cultivation

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n12p1089-1094 ◽

2016 ◽

Vol 20 (12) ◽

pp. 1089-1094

Author(s):

José R. Mantovani ◽

Jéssica da S. Bernardes ◽

Paulo R. C. Landgraf

Keyword(s):

Soil Acidity ◽

Press Cake ◽

Block Design ◽

Organic Fertilizer ◽

Phosphate Fertilizer ◽

Soil Samples ◽

Biodiesel Production ◽

Organic Fertilization ◽

Lettuce Seedling ◽

Randomized Block Design

ABSTRACT In biodiesel production, vegetable press cake is obtained as waste, and a suitable destination for jatropha press cake would be the use in agriculture as organic fertilizer. This study aimed to evaluate the effect of jatropha press cake on soil fertility attributes and on lettuce production and accumulation of nutrients in the shoots. The experiment was conducted in pots in a greenhouse, in a randomized block design with eight treatments and five replicates. The treatments consisted of doses of jatropha press cake equivalent to 0, 0.5, 1.0, 2.0, 4.0, 8.0, 16.0 and 32.0 t ha-1. Portions of 5.5 dm3 of soil received limestone, phosphate fertilizer and the doses of jatropha press cake, and remained incubated for 30 days. After incubation, soil samples were collected, each pot received one lettuce seedling and the experiment was carried out for 45 days. The organic fertilization with jatropha press cake increased the contents of nutrients in the soil, especially K+, but caused increment in soil acidity and electrical conductivity. The use of jatropha press cake as organic fertilizer decreased lettuce production and accumulation of nutrients in the shoots.

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PEMUPUKAN NITROGEN, FOSFOR, DAN KALIUM PADA TANAMAN AKAR WANGI

Jurnal Penelitian Tanaman Industri ◽

10.21082/jlittri.v19n1.2013.33-40 ◽

2020 ◽

Vol 19 (1) ◽

pp. 33

Author(s):

ROSIHAN ROSMAN ◽

OCTIVIA TRISILAWATI ◽

SETIAWAN SETIAWAN

Keyword(s):

Key Words ◽

Block Design ◽

Vetiveria Zizanioides ◽

Optimum Dosage ◽

Combination Treatments ◽

Randomized Block Design ◽

K Fertilizer ◽

Increase Productivity ◽

It Usage

ABSTRAK Dosis pupuk N, P, dan K optimal untuk akar wangi belum diketahui dan penggunaannya masih beragam. Penelitian bertujuan untuk mendapatkan komposisi dosis pupuk N, P, dan K optimal yang dapat meningkatkan produktivitas akar wangi. Penelitian dilakukan di Desa Sukakarya, Garut dari bulan Januari 2009 sampai dengan Desember 2010 menggunakan rancangan Acak Kelompok, dengan 3 ulangan. Perlakuan meliputi 9 kombinasi pupuk N, P, dan K: (1). Kontrol; (2) 100 kg SP-36 + 75 kg KCl; (3) 100 kg ZA + 75 kg KCl; (4) 100 kg ZA + 50 kg SP-36 + 75 kg KCl; (5) 100 kg ZA + 100 kg SP-36 + 75 kg KCl; (6) 100 kg ZA + 100 kg SP-36 + 150 kg KCl; (7) 100 kg ZA + 100 kg SP-36; (8) 200 kg ZA + 100 kg SP-36 + 75 kg KCl; (9) 200 kg ZA + 100 kg SP-36 + 150 kg KCl. Panen dilakukan pada 12, 14, dan 16 bulan setelah tanam (BST). Hasil menunjukkan bahwa pemupukan dosis 100 kg ZA + 75 kg KCl menghasilkan minyak 52,59 dan 67,78 kg/ha (12 dan 14 BST) dan 200 kg ZA + 100 kg SP-36 + 75 kg KCl menghasilkan 67,76 kg /ha (16 BST), dengan kadar vetiverol lebih dari 50%. Kata kunci: Vetiveria zizanioides, pemupukan, vetiverol, produksi, mutu minyakABSTRACT The optimum dosage of N, P, and K fertilizer has not been known yet and it usage was still varied. The research aim is to obtain an optimal composition of N, P, and K fertilizer that could increase productivity of vetiver crop. The researsch has been conducted in Sukakarya Village, Garut, from January 2009 to December 2010. The research was arranged in randomized block design, with 3 replications and N, P, and K fertilizer combination treatments i.e.: (1) Control; (2) 100 kg SP-36 + 75 kg KCl; (3) 100 kg ZA + 75 kg KCl; (4) 100 kg ZA + 50 kg SP-36 + 75 kg KCl; (5) 100 kg ZA + 100 kg SP-36 + 75 kg KCl; (6) 100 kg ZA + 100 kg SP- 36 + 150 kg KCl; (7) 100 kg ZA + 100 kg SP-36; (8) 200 kg ZA + 100 kg SP-36 + 75 kg KCl; (9) 200 kg ZA + 100 kg SP-36 + 150 kg KCl. Harvesting was done at 12, 14 and 16 months after planting (MAP). The result showed that the dose of 100 kg ZA + 75 kg KCl produced vetiver oil 52,59 and 67,78 kg/ha (12 and 14 MAP). Meanwhile the dose of 200 kg ZA + 100 kg SP-36 + 75 kg KCl produced 67,76 kg/ha (16 MAP), respectively. vetiverol content were more than 50%. Key words: Vetiveria zizanioides, fertilizing, vetiverol, production, oil quality

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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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Germination and morphophysiology of passion fruit seedlings under salt water irrigation1

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632018v4852710 ◽

2018 ◽

Vol 48 (3) ◽

pp. 229-236 ◽

Cited By ~ 3

Author(s):

Jailma Ribeiro de Andrade ◽

Aldair de Sousa Medeiros ◽

Sebastião de Oliveira Maia Júnior ◽

Leila de Paula Rezende ◽

João Correia de Araújo Neto

Keyword(s):

Salt Water ◽

Block Design ◽

Photosynthetic Apparatus ◽

Passion Fruit ◽

Growth And Yield ◽

Leaf Biomass ◽

Agricultural Crops ◽

Randomized Block Design ◽

Four Levels ◽

Two Stages

ABSTRACT The use of salt water in irrigation can reduce the growth and yield of agricultural crops. This study aimed to assess the germination, emergence, physiology and growth of passion fruit seedlings of two varieties under salt water irrigation. The study was conducted in two stages: the first carried out in a laboratory and the second in a greenhouse, using a randomized block design, in a 2 x 4 factorial scheme, corresponding to two passion fruit varieties (BRS RC and BRS GA1) and four levels of irrigation water electrical conductivity (0.2 dS m-1, 2.2 dS m-1, 4.2 dS m-1 and 6.2 dS m-1), with four replications. The BRS GA1 variety exhibited the highest germination index and rate, in the germination stage, despite being more sensitive to salinity than the BRS RC. There was no damage to the photosynthetic apparatus in the BRS GA1 seedlings during growth, as demonstrated by the higher leaf biomass, when compared to the BRS RC variety.

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Initial growth of Schizolobium parahybae in Brazilian Cerrado soil under liming and mineral fertilization

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n10p908-912 ◽

2016 ◽

Vol 20 (10) ◽

pp. 908-912 ◽

Cited By ~ 3

Author(s):

Ademilson Coneglian ◽

Pedro H. P. Ribeiro ◽

Bruno S. Melo ◽

Rennan F. Pereira ◽

Joáz Dorneles Junior

Keyword(s):

Block Design ◽

Market Potential ◽

Initial Growth ◽

Brazilian Cerrado ◽

Mineral Fertilization ◽

Randomized Block Design ◽

Root Shoot Ratio ◽

Soil Liming ◽

Number Of Leaves ◽

Soil Fertilizer

ABSTRACT High prices and the scarcity of hardwoods require the use of alternative wood sources, such as the Guapuruvu (Schizolobium parahybae), an arboreal species native to the Atlantic Forest, which has fast growth and high market potential. However, there is no information on its cultivation in the Brazilian Cerrado. Thus, this study aimed to analyze the contribution of mineral fertilization and liming in a Cerrado soil on the initial growth of Schizolobium parahybae. The experiment was set in a randomized block design, with 4 treatments (Cerrado soil; soil + liming; soil + fertilizer; and soil + fertilizer + liming) and 15 replicates. The following variables were analyzed: plant height, stem diameter, number of leaves, total, shoot, leaf, root and stem dry matter, and root/shoot ratio. The obtained data were subjected to the analysis of variance, Tukey test and regression analysis. During the initial growth, Schizolobium parahybae can be cultivated in a Brazilian Cerrado soil only under mineral fertilization, with no need for soil liming.

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Morphological Changes in Sugarcane as a Function of Metallurgic Slag and Gypsum

Journal of Agricultural Science ◽

10.5539/jas.v11n14p291 ◽

2019 ◽

Vol 11 (14) ◽

pp. 291

Author(s):

Paulo R. A. Clemente ◽

Benigno F. A. de Almeida ◽

Diogo H. de A. B. ◽

André L. J. Silva ◽

Vinicius S. G. da Silva ◽

...

Keyword(s):

Agricultural Production ◽

Soil Acidity ◽

Morphological Changes ◽

Block Design ◽

Limiting Factors ◽

Sugarcane Plant ◽

Morphological Aspects ◽

Randomized Block Design ◽

Seasonal Droughts ◽

Sugarcane Ratoon

Drought associated with soil acidity and exchangeable Al3+ in depth are one of the main limiting factors in agricultural production in Northeast Brazil. Acidity correctives such as limestone, metallurgy slag, and gypsum are alternatives to minimize the effects of seasonal droughts on the crop. A field study was carried out to evaluate the effect of the slag and gypsum on the morphological aspects and productivity of sugarcane during two crop cycles. A randomized block design in subdivided plots scheme with four replications was used. The plot consisted of five rows of 10 m length each, spaced 1 m from each other. Treatments consisted of five levels of metallurgy slag (0; 1; 2; 3 and 4 Mg ha-1) and two levels of gypsum (0 and 1.9 Mg ha-1). Slag and gypsum had no effect on sugarcane plant yield. However, regarding sugarcane ratoon, slag increased the yield per hectare by 1.96 Mg ha-1 and sugar yield by 0.33 Mg ha-1 per Mg of applied slag. Slag and gypsum provided better biomass allocation to the root system and improved root distribution along the soil profile.

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Studi Perubahan Unsur Kalium Akibat Pemupukan dan Pengaruhnya terhadap Hasil Tanaman

SoilREns ◽

10.24198/soilrens.v15i1.13348 ◽

2017 ◽

Vol 15 (1) ◽

Author(s):

Oviyanti Mulyani ◽

Encep Hidayat Salim ◽

Anni Yuniarti ◽

Yuliati Machfud ◽

Apong Sandrawati ◽

...

Keyword(s):

Experimental Method ◽

Block Design ◽

Organic Fertilizer ◽

Azolla Pinnata ◽

Single Factor ◽

K Uptake ◽

Exchangeable K ◽

Balanced Fertilization ◽

Randomized Block Design ◽

Experimental Plots

Balanced fertilization is one solution to support sustainable agriculture.This experiment was conducted to determine the study of potassium caused by balanced fertilization. The experimental method used a Randomized Block Design (RBD) single factor with ten treatments and three replications, so the total is 30 experimental plots. The ten treatments consisted of : without fertilizer (0), ½, 1, 1,5 and 2 doses of organic fertilizer + without fertilizer (0), ¼, ½, ¾ and 1 doses of anorganic fertilizer. The results of this experiments showed that there were significant effects on potencial K, exchangeable K, K uptake and yield of pakchoy from combination of organic fertilizer with anorganic fertilizer. The treatment 1½ dose of organic fertilizer + 1 dose of anorganic fertilizer produce the highest yield of pakchoy with 5.13 kg plot-1 (increase 100 % than control).Keywords: Azolla pinnata compost, litter, peat, solid biofertilizer

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YIELD, PHYSIOLOGICAL QUALITY AND CHEMICAL COMPOSITION OF PHASEOLUS VULGARIS SEEDS, PRODUCED IN THE STATE OF RIO GRANDE DO SUL, BRAZIL

Revista Científica Rural ◽

10.30945/rcr-v22i2.3086 ◽

2020 ◽

Vol 22 (2) ◽

pp. 224-239

Author(s):

Tiago Pedó ◽

Angelita Celente Martins ◽

Dominique Dos Santos Delias ◽

Emanuela Garbin Martinazzo ◽

Vinícius Jardel Szareski ◽

...

Keyword(s):

Chemical Composition ◽

Starch Content ◽

Block Design ◽

Soluble Sugar ◽

Soluble Sugars ◽

Experimental Unit ◽

Agricultural Crops ◽

Randomized Block Design ◽

Physiological Quality

The objective of this study was to evaluate the yield and physiological quality of bean seeds in two agricultural crops, and the chemical composition of seedlings submitted to adverse temperatures during germination. For the field experiment, a randomized block design was used, using five genotypes, BRS Embaixador, IPR Tuiuiú, Guabiju, Carioquinha and Mouro, arranged in four replicates. The experimental units were composed of five lines with five meters in length, where 25 plants were randomly collected per experimental unit to measure the characters of interest. For laboratory testing the seeds produced were submitted to three temperatures (15, 25 and 35°C) during germination under controlled conditions. The evaluated characters were: grain yield, mass of a thousand seeds, germination, first germination count, starch content, soluble sugar, soluble protein and total amino acids. The data were submitted to analysis of variance and later compared by the Tukey test. Yield per plant revealed changes between the agricultural crops, as well as among the genotypes tested. Germination and the first germination count revealed higher magnitudes in seeds produced by BRS Embaixador, IPR Tuiuiu and Carioquinha genotypes. For all genotypes, protein and amino acid levels were higher in seedlings submitted to lower temperatures. The levels of starch and total soluble sugars were higher in seedlings produced at 35°C. Yield, seed physiological quality and chemical composition of seedlings are influenced by the crop and genotypes tested.

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