scholarly journals SALINIZAÇÃO POR POTÁSSIO NA PRODUÇÃO DE PIMENTÃO FERTIRRIGADO SOB AMBIENTE PROTEGIDO

Irriga ◽  
2019 ◽  
Vol 24 (1) ◽  
pp. 177-191
Author(s):  
Renan Lima De Sousa ◽  
ROBERTO LYRA VILLAS BÔAS ◽  
POLIANA ROCHA D’ALMEIDA MOTA ◽  
CAROLINE DE MOURA D’ANDRÉA MATEUS ◽  
RAFAEL BARCELOS MENDONÇA

SALINIZAÇÃO POR POTÁSSIO NA PRODUÇÃO DE PIMENTÃO FERTIRRIGADO SOB AMBIENTE PROTEGIDO     RENAN LIMA DE SOUSA1; ROBERTO LYRA VILLAS BÔAS2; POLIANA ROCHA D’ALMEIDA MOTA3; CAROLINE DE MOURA D’ANDRÉA MATEUS4 E RAFAEL BARCELOS MENDONÇA5   1Programa de Pós-graduação em Agronomia, Universidade Estadual Paulista “Júlio de Mesquita Filho”, UNESP, Avenida Universitária, nº 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. E-mail: [email protected] 2Departamento de Solos e Recursos Ambientais, Universidade Estadual Paulista “Júlio de Mesquita Filho”, UNESP, Avenida Universitária, nº 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. E-mail: [email protected] 3Departamento de Engenharia Agrícola e Solos, Universidade Federal do Piauí, UFPI, Rua Dirce Oliveira, nº 3397, Ininga, CEP 64048-550, Teresina, PI, Brasil. E-mail: [email protected] 4Departamento de Solos e Recursos Ambientais, Universidade Estadual Paulista “Júlio de Mesquita Filho”, UNESP, Avenida Universitária, nº 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. E-mail: [email protected] 5Departamento de Solos e Recursos Ambientais, Universidade Estadual Paulista “Júlio de Mesquita Filho”, UNESP, Avenida Universitária, nº 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. E-mail: [email protected]     1 RESUMO   Objetivou-se com a pesquisa avaliar doses de potássio na produção de pimentão, cultivar ‘Gaston’, e efeitos no extrato de solução do solo, utilizando extratores. Instalou-se a pesquisa na estufa agrícola do Departamento de Solos e Recursos Ambientais da Universidade Estadual Paulista “Júlio de Mesquita Filho” - Campus de Botucatu, tendo sido as plantas conduzidas em vasos. Utilizou-se o delineamento experimental em blocos casualizados, quatro repetições, testando quatro doses de K2O (363 kg ha-1, 726 kg ha-1, 1088 kg ha-1 e 1451 kg ha-1) aplicadas via fertirrigação por gotejamento. Foram avaliados: a condutividade elétrica e concentração de íons específicos da solução do solo extraída semanalmente, altura das plantas e produção. Os extratores permitiram monitoramento eficiente e houve diferença significativa entre os tratamentos. O aumento da concentração de sais na solução do solo reduziu a altura das plantas, número de frutos e a produção. A dose, além da calagem, que proporcionou maior produção de frutos foi: 363 kg ha-1 de K2O com 39,2 t ha-1, apresentando condutividade elétrica média ao longo do ciclo de 1,7 dS m-1 e concentração de 111 mg L-1 no extrato de solução do solo.   Palavras chave: Capsicum annuum L., fertirrigação, extrator de solução, solução do solo, salinização     SOUSA, R. L.; VILLAS BÔAS, R. L.; MOTA, P. R. D.; MATEUS, C. M. D.; MENDONÇA, R. B.     EFFECTS OF POTASSIUM SALINIZATION IN THE PRODUCTION OF FERTIRRIGATED RED PEPPERS UNDER GREEN HOUSE     2 ABSTRACT   The objective of this study was to evaluate potassium doses in the production of sweet pepper, 'Gaston' cultivar, and effects on soil solution extract, using extractors. The research was installed in the greenhouse of the Department of Soils and Environmental Resources of São Paulo State University "Júlio de Mesquita Filho" - Botucatu Campus, and the plants were carried in pots. The experimental design was a randomized block design, with four replicates, using four doses of K2O (363 kg ha-1, 726 kg ha-1, 1088 kg ha-1 and 1451 kg ha-1) applied via drip fertirrigation. Electrical conductivity and specific ion concentration of soil solution extracted weekly, plant height and yield were evaluated. The extractors allowed efficient monitoring and there was  significant differences across treatments. Increase in salt concentration  in the soil solution reduced plant height, number of fruits and yield. The dose, in addition liming, that provided the highest fruit yield was: 363 kg ha-1 of K2O with 39.2 t ha-1, with an average electrical conductivity over the cycle of 1.7 dS m -1 and concentration of 111 mg L-1 in soil solution extract.   Keywords: Capsicum annuum L., fertirrigation, solution extractor, soil solution, salinization

Author(s):  
Ismeet Singh ◽  
Amarjeet Kaur

The present investigation was carried out during 2016-2017 with the objective of observing the effect of the tested systems of pruning on vegetative, fruiting, yield and quality traits of capsicum varieties. The experiment was laid out in a factorial randomized block design with four replications and nine treatments with Indra, Bachata and Inspiration cultivars of capsicum pruned with three intensities i.e. two shoots, four shoots and un-pruned (control). The results showed that the two stem pruning treatment significantly affected the plant growth and flowering characteristics in terms of plant height (194.75cm), number of days to first flower (20.25 days) in cv. Indra. Same cultivar when left un-pruned recorded more number of fruits per plant (23.64 fruits), but fruit yield per plant (4.14kg) was observed in four stem pruning treatment in Indra cultivar of capsicum than other cultivars tried.


Irriga ◽  
2016 ◽  
Vol 21 (4) ◽  
pp. 724-735 ◽  
Author(s):  
Géssica Silva Lima ◽  
Fernando Broetto ◽  
Antônio De Pádua Sousa ◽  
Joselina De Souza Correia ◽  
Alexsandro Oliveira Da Silva

IMPACTOS NUTRICIONAIS E PRODUÇÃO DE PIMENTÃO SUBMETIDO À DEFICIÊNCIA HÍDRICA(I)  GÉSSICA SILVA LIMA1, FERNANDO BROETTO2; ANTÔNIO DE PÁDUA SOUSA1; JOSELINA DE SOUZA CORREIA1 E ALEXSANDRO OLIVEIRA DA SILVA3. (I) Parte da dissertação de mestrado do primeiro autor.1Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu-SP, [email protected], [email protected] de Química, Instituto de Biociências, Universidade Estadual Paulista, Botucatu-SP, [email protected] de Engenharia Agrícola, Universidade Federal do Ceará, Fortaleza-CE, [email protected]  1 RESUMO O pimentão é uma solanácea de origem americana com grande consumo no Brasil. Com objetivo de estudar os efeitos da deficiência hídrica sobre a cultura do pimentão, conduziu-se experimento em ambiente protegido. Os tratamentos foram constituídos pelo teor de água no solo (100%, 85%, 70% e 55% da umidade na capacidade de campo) organizados em blocos casualizados com 6 blocos, sendo as unidades experimentais compostas por 16 plantas. Durante o experimento (aos 47, 62, 77 e 92 dias após o transplantio) foram avaliados os teores de macronutrientes (N, P, K, Ca, Mg e S) e micronutrientes (B, Cu, Fe, Mn e Zn) em cada fração vegetal além da matéria seca dessas frações. Na colheita, determinou-se o número, largura, diâmetro e comprimento dos frutos de cada planta. As variáveis foram submetidas ao teste de média de Tukey a 5% de probabilidade. O teor de água no solo interferiu de maneira significativa nas variáveis produtivas. Para o acúmulo de nutrientes na massa seca (folha+caule) os elementos com maior absorção seguiram a seguinte ordem: K>N>Ca>Mg>S>P e Fe>Mn>Zn>B>Cu. Palavras-chave: Manejo da Irrigação, Capsicum annuum L., demanda hídrica.  LIMA, G. S.; BROETTO, F.; SOUSA, A. P.; CORREIA, J. S.; SILVA, A. O.NUTRITIONAL IMPACTS AND PRODUCTION OF SWEET PEPPER UNDER WATER DEFICIT  2 ABSTRACT The sweet pepper is a solanaceous plant of American origin with large consumption in Brazil. In order to study the effects of water stress on the sweet pepper crop, an experiment was conducted in greenhouse. The treatments consisted of soil water content (100%, 85%, 70% and 55% of moisture in the soil field capacity) in a randomized block design with 6 replicates where the experimental units consisted of 16 plants. During the experiment (47, 62, 77 and 92 days after planting) levels of macronutrients (N, P, K, Ca, Mg and S) and micronutrients (B, Cu, Fe, Mn and Zn) present in each plant fraction and the dry mass of plants for the accumulation of these determination were determined. At harvest the number, width and length of fruits from each plant were obtained. Variables were subjected to Tukey test at 5% probability. The water content in the soil interfered significantly with productive variables. To the accumulation of nutrients in the dry matter (leaf + stem) the elements with higher absorption are ordered as follows: K> N> Ca> Mg> S> P and Fe>Mn> Zn> B> Cu. Keywords: Management of irrigation, Capsicum annuum L., water demand. 


HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 794C-794
Author(s):  
Francisco Radillo-Juárez* ◽  
Marcelino Bazán-Tene ◽  
Jaime Molina-Ochoa ◽  
Edgar Damián Rolón-Vejar

The production of `Jalapeño' hot pepper has been increased in the last 10 years in about 6.21% during the period between 1992-2003, with a growing rate of 72%. In Mexico, is an important produce, because it is considered part of the traditional Mexican diet as well as its high productive level. One of the most frequent problems in this crop is the low production of fresh fruits caused by an inadequate fertilization. The objective of this research was to evaluate the effect of four fertilization formulas on the yield of fresh fruit of hot pepper variety Jalapeño cultivar Grande under irrigation conditions The evaluated formulas were (N-P-K-S): 1) 58-51-35-12 (control); 2) 78-68-46-16; 3) 97-85-58-20; and 4) 117-102-69-24. Treatments were distributed under a completely randomized block design with four replications. The formula 117-102-69-24 showed the highest values in the plant height and number of fruits with 62.5 cm, and 48 fruits, respectively. This formula also showed the highest values on equatorial and longitudinal diameters, and fruit weight with 3.36 cm, 11.26 cm, and 33.66 g, respectively. The total yields per plant and per hectare was 1.54 kg; and 38.22 t was obtained with the formula 117-102-69-24. The formula with the higher units of each element showed the best performance and exhibited the highest yield of fresh hot pepper, it was more productive than the control treatment commonly used by the hot pepper growers in Colima.


Agrikultura ◽  
2017 ◽  
Vol 28 (2) ◽  
Author(s):  
Stefina Liana Sari ◽  
Rija Sudirja ◽  
Emma Trinurani Sofyan

ABSTRACTApplication of liquid organic fertilizer formula plus on degraded soil to improve the productivity of the land and chili (Capsicum annuum L.) productionSoil exploitation in large numbers occurred in the District Wanaraja of Garut Regency. Excavation of soil more than 2 meters from the top layer for the manufacture of red bricks has exceeded the ability of the soil to re-establish its structure. So that the soils, which were agricultural lands, can be classified as degraded soils with less fertility and chemical properties. Lans reuse for agriculture requires adequate recovery and fertilizer input. This study aimed to determine the formula of LOF (liquid organic fertilizer) plus used with NPK compound fertilizer on degraded soil to improve the soil productivity. The design used was a Simple Randomized Block Design (RBD) by 10 combinations of LOF plus treatment with NPK compound fertilizer as follows: A = Control (degraded soil, no fertilizer), B = 0% LOF + 1 NPK, C = 0.25% LOF + 1 NPK, D = 0.50% LOF + 1 NPK, E = 0.75% LOF + 1 NPK, F = 1.00 % LOF + 1 NPK, G = 0.5% LOF + 3/4 NPK, H = 0.5% LOF + 1/2 NPK, I = 0.5% LOF + 1/4 NPK, J = 0.5 LOF + 0 NPK, and K = 1 NPK of normal soil that all replicated three times. The results showed that the degraded soil of red bricks required concentration of LOF above 0.5% to 1% when applied with 1 dose of standard NPK. It is able to balance the uptake of nutrients P, Ca, and B and percentage of fruitset in chili commodities equivalent to normal soil.Keywords: Chilli, Liquid Organic Faertilizer (LOF), NPK, Soil degrededABSTRAKEksploitasi tanah dalam jumlah yang besar terjadi di Kecamatan Wanaraja, Kabupaten Garut. Terjadinya penggalian tanah lebih dari 2 meter dari lapisan atas untuk pembuatan batu bata merah melampaui kemampuan tanah untuk membentuk struktur tanah kembali, sehingga tanah-tanah yang sebelumnya merupakan tanah pertanian ini dapat digolongkan menjadi tanah terdegradasi dengan sifat kimia kurang subur dan pemanfaatan kembali untuk pertanian memerlukan pemulihan dan input pupuk yang cukup. Penelitian ini bertujuan untuk mengetahui formula pupuk cair organik (PCO) plus yang digunakan bersama NPK pada tanah terdegradasi guna meningkatkan kembali produktvitas tanahnya. Rancangan yang digunakan adalah RAK sederhana dengan 10 kombinasi perlakuan PCO plus bersama NPK yaitu A = Kontrol (tanah terdegradasi, tanpa pupuk), B = 0% PCO + 1 NPK, C = 0,25% PCO + 1 NPK, D = 0,50% PCO + 1 NPK, E = 0,75% PCO + 1 NPK, F = 1,00% PCO + 1 NPK, G = 0,5% PCO + 3/4 NPK, H = 0,5% PCO + 1/2 NPK, I = 0,5% PCO + 1/4 NPK, J = 0,5 PCO + 0 NPK, dan K = 1 NPK tanah normal. Semua perlakuan diulang tiga kali. Hasil penelitian menunjukkan bahwa tanah terdegradasi bekas tambang batu bata merah memerlukan konsentrasi PCO di atas 0,5% sampai dengan 1% apabila diaplikasikan bersama 1 dosis NPKstandar. Hal ini mempu mengimbangi serapan hara P, Ca, dan B serta persen fruitset pada komoditas cabai setara dengan tanah normal.Kata Kunci: Cabai, NPK, Pupuk Cair Organik (PCO), Tanah terdegradasi


Author(s):  
Nurul Aini ◽  
Wiwin Sumiya Dwi Yamika ◽  
Luqman Qurata Aini ◽  
Muhammad Jauhar Firdaus

A field experiment was conducted from October 2018 to April 2019 at Sidomukti Village, Brondong Sub-District of Lamongan Regency, Province of East Java. The research was performed with the aim of examining and obtaining appropriate combinations of plant spacing and planting model for red chili (Capsicum annuum L.) and shallot (Allium ascalonicum L.) plants in saline soil conditions. The utilized design on this research was randomized block design. This research consists of 6 combinations that are repeated 4 times, resulting in 24 experimental units. Based on the research, it was found that the treatment of multiple cropping of red chilies i.e. 2 rows of shallot plants between rows of red chilies have land equivalence ratios (LER) greater than 1, being 1.32 and 1.41, which indicates that the treatment of multiple cropping leads to higher land effectiveness.


Irriga ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 890-899
Author(s):  
ENRIQUE ALONSO ZUÑIGA ◽  
LUZ MARIA RUIZ MACHUCA ◽  
OSVALDIR FELICIANO DOS SANTOS ◽  
MARA LÚCIA CRUZ DE SOUZA ◽  
DARIANE PRISCILA FRANCO DE OLIVEIRA ◽  
...  

COMPORTAMENTO FISIOLÓGICO DE MUDAS DE CAFEEIRO ARÁBICA (cv. OBATÃ E CATUCAÍ) SUBMETIDAS À DEFICIÊNCIA HÍDRICA     ENRIQUE ALONSO ZUÑIGA1*; LUZ MARIA RUIZ MACHUCA1; OSVALDIR FELICIANO DOS SANTOS1; MARA LÚCIA CRUZ DE SOUZA1; DARIANE PRISCILA FRANCO DE OLIVEIRA1 E FERNANDO BROETTO 2   1Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista (UNESP) Campus de Botucatu. Fazenda Experimental Lageado, Avenida Universitária, n° 3780, Altos do Paraíso, CEP: 18610-034, Botucatu – SP. Brasil. E-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]. *O presente artigo é retirado da tese de Doutorado do autor principal. 2Departamento de Química e Bioquímica, Instituto de Biociências , Universidade Estadual Paulista (UNESP) Campus de Botucatu. Rua Prof. Dr. Antônio Celso Wagner Zanin, nº 250, Distrito de Rubião Junior, CEP: 18618-689, Botucatu – SP. Brasil. E-mail: [email protected]     1 RESUMO   Neste trabalho foram avaliadas características biométricas e teor de pigmentos em plantas de cafeeiro arábica cv. Obatã e Catuaí cultivadas sob deficiência hídrica (DH). O experimento foi conduzido em estufa agrícola no período dezembro-maio de 2016-2017 no distrito de Rubião Júnior (Departamento de Química e Bioquímica do IB/UNESP), Botucatu-SP. Os tratamentos foram dispostos em delineamento em blocos casualizados em esquema fatorial 3x2 em parcelas subdivididas, com quatro repetições por tratamento. Os tratamentos aplicados foram: T1 - 100% da capacidade de campo (CC) - C = Controle, plantas bem irrigadas, T2 - 50% da CC - DHM = Deficiência hídrica moderada e T3 - 25% da CC - DHS = Deficiência hídrica severa. Aos 90, 120, 135 e 165 dias após transplantio (DAT) foram avaliados a altura de plantas, área foliar e teor de clorofilas (a e b). Verificou-se que apenas a altura das plantas e a área foliar diminuíram significativamente em função da severidade do estresse. Entre as cultivares, somente as plantas da cv. Obatã conseguiram se adaptar melhor aos efeitos da DH.   Palavras-chave: Coffea arabica, deficiência hídrica, biometria, pigmentos foliares.     ALONSO-ZUÑIGA, E; RUIZ-MACHUCA, L. M; SANTOS, O. F; SOUZA, M. L. C; OLIVEIRA, D. P. F; BROETTO, F. PHYSIOLOGICAL BEHAVIOR OF ARABIC COFFEE SEEDLINGS (cv. OBATÁ AND CATUCAÍ) SUBMITTED TO WATER DEFICIT     2 ABSTRACT   In this work, biometric characteristics and pigment content were assessed in Arabica cv. Obatã and Catuaí cultivated under water deficit (WD). The experiment was conducted in an agricultural greenhouse from December to May, 2016-2017 in the district of Rubião Júnior (Department of Chemistry and Biochemistry of IB / UNESP), Botucatu-SP. Treatments were arranged in a randomized block design in a 3x2 factorial scheme in subdivided plots, with four replications per treatment. The treatments applied were: T1 - 100% of field capacity (FC) - C = Control, well irrigated plants, T2 - 50% of FC - MWD = moderate water deficit and T3 - 25% FC - SWD = severe water deficit. Plant height, leaf area and chlorophyll content (a and b) were assessed at 90, 120, 135 and 165 days after transplanting (DAT). It was verified that only plant height and leaf area decreased significantly as function of stress severity. Among the cultivars, only cv. Obatã presented better adaptation to the effects of WD. Keywords: Coffea arabica, water deficit, biometry, foliar pigments


2016 ◽  
Vol 21 (2) ◽  
pp. 124
Author(s):  
Nikardi Gunadi ◽  
R Maaswinkel ◽  
Tonny Koestani Moekasan ◽  
Laksminiwati Prabaningrum ◽  
Subhan ◽  
...  

Di Indonesia, penelitian tentang pengaruh jumlah cabang per tanaman sangat terbatas dan baru dilakukan pada satu varietas paprika, yaitu cv. Ferrari. Dalam rangka meningkatkan pilihan petani terhadap varietas yang dibudidayakan, penelitian tentang pengaruh jumlah cabang per tanaman pada pertumbuhan dan hasil tiga varietas paprika perlu dilakukan. Penelitian dilaksanakan di Rumah Plastik kayu-metal, Kebun Percobaan Balai Penelitian Tanaman Sayuran, Lembang (1.250 m dpl.), Jawa Barat dari bulan Juni 2007 sampai dengan Februari 2008. Penelitian menguji dua faktor perlakuan, yaitu (1) jumlah cabang per tanaman dengan dua taraf, yaitu dua dan tiga cabang per tanaman serta (2) varietas dengan tiga taraf yaitu varietas Spider, Chang, dan Athena. Percobaan menggunakan rancangan acak kelompok dengan tiga ulangan. Hasil penelitian menunjukkan bahwa jumlah cabang per tanaman berpengaruh nyata terhadap pertumbuhan dan hasil paprika. Tanaman paprika dengan sistem tiga cabang menunjukkan pertumbuhan yang lebih tinggi dan berbeda nyata dibandingkan dengan sistem dua cabang terutama pada  umur 11 minggu setelah tanam. Tanaman paprika dengan sistem tiga cabang memberikan hasil total dan hasil kelas buah &gt;200 g berturut-turut lebih tinggi  yaitu sebesar 9,3 dan 9,1% daripada tanaman paprika dengan dua cabang. Total hasil varietas Athena dan Spider lebih tinggi dan berbeda nyata dibandingkan dengan varietas Chang, tetapi varietas Chang menghasilkan jumlah buah yang lebih banyak dibandingkan dengan dua varietas lainnya. Hasil penelitian ini dapat digunakan sebagai rekomendasi untuk pemilihan varietas dan teknik budidaya paprika dalam kondisi rumah plastik di Indonesia.<br /><br /><br />In Indonesia, research on the effect of stem number per plant is very limited and it was conducted only in one sweet pepper variety namely Ferrari. In order to increase the possibility of farmers to choose good cultivated varieties, an experiment needs to be conducted to determine the effect of stem number per plant on the growth and yields of three sweet pepper varieties. This experiment was carried out in the wood-metal plastichouse at the experimental field of the Indonesian Vegetable Research Institute (IVEGRI), Lembang (1,250 m asl.), West Java from June 2007 to February 2008. Two factor treatments tested were (1) number of stem per plant with two levels i.e. two stems and three stems per plant and (2) varieties of sweet pepper i.e. Spider, Chang, and Athena. The treatment combinations were arranged in a completely randomized block design with three replications. The results indicated that number of stem per plant significantly affected the growth and yield of sweet pepper. The plant height of sweet pepper plants grown with three stems were significantly higher than those with two stems, especially after 11 weeks after planting. The plants grown with three stems per plant gave higher total yield and yield of class &gt;200 g up to 9.3 and 9.1%, respectively than the ones grown with two stems per plant. The total yield and yield of class &gt; 200 g of Athena and Spider were significantly higher than those of Chang. However, Chang yielded more number of fruits compared to Athena and Spider. The results can be used as a recommendation in variety selection and cultivation of sweet pepper grown under plastichouse  conditions in Indonesia.<br /><br />


Author(s):  
E. M. Silva ◽  
R. G. Nobre ◽  
L. P. Souza ◽  
F. W. A. Pinheiro ◽  
A. B. A. Andrade

<p>Além de favorecer o desenvolvimento e a produção das culturas, a adubação tem sido considerada uma técnica capaz de reduzir o efeito da salinidade nas plantas. Neste sentido, desenvolveu-se o trabalho<strong> </strong>para avaliar a influência de doses de nitrogênio na formação de mudas de goiabeira cv. Paluma irrigadas com águas de diferentes salinidades. O experimento foi desenvolvido em casa de vegetação do Centro de Ciências e Tecnologia Agroalimetar da UFCG, Pombal, PB com delineamento experimental em blocos casualizados, em esquema fatorial 5 x 4, sendo os tratamentos correspondentes aos níveis de condutividade elétrica da água (CEa) de 0,3; 1,1; 1,9; 2,7 e 3,5 dS m<sup>-1</sup> associados a 70, 100, 130 e 160% da dose recomendada de nitrogênio (N) para mudas de goiabeira cv. Paluma, com quatro repetições, e cinco plantas por unidade experimental. Aos 180 dias após a emergência, a adubação nitrogenada na dose de 773 mg de N dm<sup>-3</sup> reduz o efeito da salinidade da água de irrigação sobre o diâmetro do caule das mudas. As plantas adubadas com as doses variando de 541 a 618,4 mg de N dm<sup>-3</sup> atingem maior crescimento em altura de planta, número de folhas e área foliar. A área foliar e a massa seca total de mudas de goiabeira atingem maiores valores no nível de CEa de 1,3 dS m<sup>-1</sup>.</p><p align="center"><strong>Effect of nitrogen fertilization in the formation of guava seedlings irrigated with salted water</strong></p><p><strong>Abstract</strong><strong>: </strong>In addition to favoring the development and production of crops, the fertilizer has been considered a technique capable to reduce the effect of salinity on plants. The experiment was conducted in a greenhouse of the ‘Centro de Ciências e Tecnologia Agroalimentar’ of UFCG, Pombal, PB in a randomized block design a 5 x 4 factorial, with the treatments corresponding to the electrical conductivity of irrigation water (ECw) 0.3; 1.1; 1.9; 2.7 and 3.5 dS m<sup>-1</sup> associated with doses of 70, 100, 130 and 160% of recommended nitrogen (N) for guava seedlings Paluma,  with four replications, using five plants per experimental unit. At 180 days after emergence, the nitrogen fertilization at a dose of 773 mg N dm<sup>-3</sup> reduces the effect of irrigation water salinity on the stem diameter of seedlings. The plants fertilized with doses ranging from 541 at 618.4 mg of the N dm<sup>-3</sup> reach higher growth in plant height, leaf number and leaf area. The leaf area and total dry mass of guava seedlings reach higher values at the ECw level of 1.3 dS m<sup>-1</sup>.</p>


Author(s):  
K. L. Shaziya ◽  
B. I. Bidari ◽  
S. T. Hundekar ◽  
M. Pushpalatha

A field experiment was conducted during kharif 2018 in the farmer’s field at Agadi village (Tq: Hubballi) in Dharwad district to investigate the “Effect of cow urine foliar spray on quality attributes and chemical characteristics of Byadgi chilli (Capsicum annuum L.) in a Vertisol”. Experiment consisted of 12 treatments with three replications laid out in Completely Randomized Block Design. Results revealed that, two foliar applications of 15 per cent cow urine one each at 60 and 90 DAT recorded highest colour value (201.65 ASTA units), closely followed by treatment that received two sprays of 10 per cent cow urine on 60 + 90 DAT (194.50 ASTA units). Highest oleoresin content (20.23%) was noticed in the treatment that received 15 per cent cow urine spray on 60 + 90 DAT which was on par with treatment that received two sprays of 10 per cent cow urine (19.56%). Highest capsaicin content (0.16%) was recorded in the treatment that received 15 % cow urine spray at 60 DAT as well as cow urine spray at 60 DAT + 90 DAT and also 50 ppm NAA spray at 60 DAT. Foliar spray of cow urine did not significantly influenced the total ash, total sugars and total ether extract contents in fruits which ranged from 5.95 to 6.96, 18.20 to 19.89 and 14.10 to 15.20 per cent respectively. Treatment that received one spray of 15 per cent cow urine on 90 DAT recorded numerically highest (6.96%) total ash closely followed by treatment (6.83%) that received five per cent foliar spray at 60 + 90 DAT. Treatment that received two sprays of 15 per cent cow urine recorded numerically highest (19.89%) total sugars closely followed by treatment (19.78%) that received 5 per cent foliar spray at 90 DAT. Treatment that received two sprays of 10 per cent cow urine recorded highest total ether extract (15.20%) closely followed by treatment (14.93%) that received 5 per cent foliar spray at 60 + 90 DAT.


2021 ◽  
Vol 7 (2) ◽  
pp. 262-271
Author(s):  
I Komang Damar Jaya ◽  
Bambang Budi Santoso ◽  
Jayaputra Jayaputra

The use of high doses of chemical fertilizers in the production of chili (Capsicum annuum L.) has an adverse impact on the environment, especially in dryland. This study aimed to examine the role of cow manure (PKS), goat manure (PKK), chicken manure (PKA), or a combination of two manures in reducing 25% of the requirement for chemical fertilizer on chili plants. One experiment was carried out in the dryland of Gumantar Village, North Lombok Regency, from May to October 2021. Phonska NPK (15-15-15) chemical fertilizer (PK) at a 1,200 kg/ha dose was used as a control. The treatments tested were 75% PK+PKS, 75% PK+PKK, 75% PK+PKA, 75% PK+PKS+PKK, 75% PK+PKS+PKA and 75% PK+PKK+PKA. The dose of manure used in each treatment was 20 tons/ha. All treatments were repeated three times and arranged in a randomized block design. The results showed that the treatment of manure, especially goat manure and chicken manure, increased the available phosphate (P) in the soil. The growth and yield of chili plants were not significantly different in all treatments, which means that manure could replace the role of 25% of the chemical fertilizer used. These results indicate that manure in the long term can reduce the need for chemical fertilizers to produce chili in dryland.  Key words: chili; dryland; manure; chemical fertilizer; nutrition


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