scholarly journals CRESCIMENTO, PRODUTIVIDADE E PALHADA DE MILHO EXCLUSIVO E CONSORCIADO COM CROTALÁRIAS EM DIFERENTES ESPAÇAMENTOS

2019 ◽  
Vol 18 (1) ◽  
pp. 99-111
Author(s):  
VINÍCIUS CAMBAÚVA ◽  
FÁBIO TIRABOSCHI LEAL ◽  
LEANDRO BORGES LEMOS

RESUMO – A escolha da espécie de crotalária associada ao adequado espaçamento entrelinhas de milho possibilitao retorno econômico com o cereal e os benefícios dos adubos verdes. Assim, o objetivo desse trabalho foi avaliar ocrescimento e desempenho agronômico do milho, a quantidade e o acúmulo de nitrogênio na palhada provenientesdos sistemas de cultivo de milho exclusivo e consorciado com Crotalaria juncea, Crotalaria spectabilis e Crotalariaochroleuca e a mistura dessas espécies (“mix”). O delineamento experimental foi o de blocos casualizados, emesquemas de parcelas subdivididas, com quatro repetições. As parcelas foram compostas por dois espaçamentosentrelinhas de milho: 0,45 e 0,90 m. As subparcelas foram compostas por cinco sistemas de cultivo: milho exclusivo;milho + C. juncea; milho + C. spectabilis; milho + C. ochroleuca; milho + “mix” (C. juncea, C. spectabilis e C.ochroleuca). O consórcio com a C. juncea reduz a produtividade do cereal. No entanto, sua utilização no “mix” éviável. Os espaçamentos de 0,45 e 0,90 m não influenciam o crescimento e a produtividade do milho, e a palhada dossistemas de cultivo. Os consórcios com crotalárias proporcionam maior quantidade de palhada em comparação aomilho exclusivo, embora o acúmulo de nitrogênio não seja alterado.Palavras-chave: Zea mays L., Crotalaria juncea, Crotalaria spectabilis, Crotalaria ochroleuca, adubos verdes.GROWTH, YIELD AND STRAW OF EXCLUSIVE AND INTERCROPPED MAIZEWITH CROTALARIAS IN DIFFERENT ROW SPACINGSABSTRACT - The choice of the crotalaria species associated to the adequate maize row spacing allows the economicreturn with the cereal and the benefits of the green fertilizers. Thus, the objective of this work was to evaluate thegrowth and agronomic performance of maize, the amount and nitrogen accumulation in the straw from the exclusiveand intercropped systems of maize with Crotalaria juncea, Crotalaria spectabilis and Crotalaria ochroleuca, andthe mixture of these species (“mix”). A randomized complete block design with four replications was used. The plotswere composed of two maize row spacings, 0.45 and 0.90 m. The subplots were constituted of five systems: exclusivemaize; maize + C. juncea; maize + C. spectabilis; maize + C. ochroleuca; maize + “mix” (C. juncea, C. spectabilis andC. ochroleuca). The consortium with C. juncea reduced cereal productivity. However, its use in the “mix” is feasible.Rows spacings of 0.90 and 0.45 m did not affect maize growth and yield, and straw of systems. The consortium withcrotalaria provided more straw compared to exclusive maize, although the N accumulation did not change.Keywords: Zea mays L., Crotalaria juncea, Crotalaria spectabilis, Crotalaria ochroleuca, green manure crops.

Author(s):  
Nasratullah Habibi ◽  
Friba Sikandari

An experiment was conducted to evaluate effect of urea fertilizer on yield and yield components of Zea mays L. Using Randomized Complete Block Design (RCBD) split plots in three replications in agricultural research farm of Balkh University by 2019. Doses of urea used in this experiment were 0, 80, 160 and 240 kg ha-1 , respectively. It has been found that amount of nitrogen fertilizer (urea) had significant effect on yield of maize at p<0.05. The higher level of nitrogen caused the higher grain yield, number of kernels per ear, the number of grains per ear row, ear diameter, cob length, grain per plant and plant height. As a result 7.76 ton ha-1 was recorded as high yield while 240 kg ha-1 urea was used, and 5.12 ton ha-1 was recorded as low yield in treatment one with 0 kg ha-1 of nitrogen fertilizer. Finally, as a result using 240 kg ha-1 nitrogen fertilizer is recommended.


2017 ◽  
Vol 16 (3) ◽  
pp. 401
Author(s):  
CÁSSIO VITORAZZI ◽  
ANTONIO TEIXEIRA AMARAL JÚNIOR ◽  
LILIAM SILVIA CANDIDO ◽  
ISMAEL LOURENÇO DE JESUS FREITAS ◽  
THIAGO RODRIGUES DA CONCEIÇÃO SILVA

 RESUMO - A adequação do arranjo populacional está entre as técnicas que podem maximizar a produtividade da cultura do milho. Daí a importância das pesquisas que buscam estudar o desempenho de cultivares de milho e milhos especiais, a fim de determinar o arranjo de plantas ideal. O objetivo deste trabalho foi avaliar o desempenho da variedade UENF-14, de milho pipoca, cultivada em diferentes arranjos populacionais, na safra e safrinha, para otimizar a recomendação fitotécnica para os produtores rurais do Norte Fluminense. Foram instalados dois experimentos em Campos dos Goytacazes-RJ. Um na safrinha 2011 utilizando a variedade UENF-14 e o híbrido experimental P2 x P9, e o outro na safra 2011-2012, com a variedade UENF-14 e o híbrido comercial IAC-112. O delineamento experimental, nos dois experimentos, foi o de blocos casualizados arranjados em parcelas subsubdivididas, em que as parcelas foram compostas pelos genótipos, as subparcelas constituídas pelos espaçamentos entre linhas de semeadura (0,45, 0,60 e 0,90 m) e as subsubparcelas compostas pelas densidades de plantas (60.000, 75.000 e 90.000 plantas ha-1). A UENF-14 apresentou desempenho superior aos híbridos, demonstrando seu potencial para cultivo na região Norte Fluminense. Houve aumento do rendimento de grãos com a diminuição do espaçamento entre linhas de plantio. Para a variedade UENF-14, a redução do espaçamento entre linhas de plantio foi vantajosa para a produção de grãos, independentemente da época de semeadura.Palavras-chave: Zea mays L., densidade de semeadura, espaçamento entre linhas, épocas de semeadura.  POPULATION ARRANGEMENT FOR THE VARIETY OF POPCORN UENF-14 ABSTRACT - The adequacy of the maize population arrangement is among the most important techniques for obtaining higher yields. Therefore, many researchers have been conducting an attempt to study the performance of corn and specialty corn. The objective was to evaluate the performance of the popcorn variety UENF-14 in different population arrangements, in the harvest season and off-season. Two experiments were carried out in Campos dos Goytacazes, North of Rio de Janeiro State, Brazil, in the off-season 2011, using the UENF-14 variety and the experimental hybrid P2 x P9, and in the season 2011-2012 using UENF-14 and the commercial hybrid IAC-112. The treatments were arranged in randomized complete block design with split plots, in which plots were composed by popcorn genotypes, the subplots consisting of three spacings between sowing lines (0.45, 0.60 and 0.90 m) and the subsubplots composed of three plants per hectare densities (60,000, 75,000 and 90,000 plants.ha-1). The variety UENF-14 presented higher performance than the hybrids, demonstrating its potential for recommendation to the North of Rio de Janeiro State. There was an increase of grain yield by reducing the spacing between the plants rows. The cultivation of the variety UENF-14 reducing the spacing between rows was advantageous for grain production, regardless of planting date.Keywords: Zea mays L., densities of plants, spacing between rows, sowing times.


2020 ◽  
Vol 4 (1) ◽  
pp. 91-99
Author(s):  
Multazam Palepi ◽  
Jumini Jumini ◽  
Syaffrudin Syaffrudin ◽  
Syaffrudin Syaffrudin

Abstrak.  Penelitian ini bertujuan untuk mengetahui pengaruh jenis mikoriza dan populasi tanaman terhadap pertumbuhan dan hasil jagung manis, serta interaksi antara jenis mikoriza dengan populasi tanaman terhadap pertumbuhan dan hasil jagung manis. Penelitian ini dilaksanakan pada bulan November 2017 sampai Januari 2018 di Desa Blang Krueng, Kecamatan Baitussalam, Kabupaten Aceh Besar. Rancangan Penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) pola faktorial 3 x 2 dengan  3 ulangan. Faktor yang diteliti yaitu jenis mikoriza dan populasi tanaman. Faktor jenis mikoirza terdiri dari 3 taraf yaitu ; mikoriza glomus mosseae, gigaspora dan campuran. Faktor populasi tanman terdiri atas 2 taraf yaitu : satu benih dan dua benih. Hasil penelitian menunjukkan penggunaan jenis mikoriza campuran secara umum menghasilkan pertumbuhan dan  hasil  tanaman jagung yang lebih baik. Sedangkan populasi tamanan yang terbaik adalah satu tamanan. Selanjutnya Interaksi yang lebih baik terdapat  pada jenis mikoriza campuran dengan  populasi tamanan pada parameter diameter batang 15 HST dan 30 HST, berat basah akar dan berat buah berkelobot, diameter tongkol,berat buah tampa kelobot dan potensi hasil per hektar. The effect of Mycoriza Types and Number of Crop Populations on Growth and Yield of Sweet CornAbstractThis research purposes to know the effect of mycoriza types and the population of  the plants toward the growth and yield of sweet corn and the interaction between mycoriza types and the population of  the plants to the growth and yield of sweet corn. This research was carried out in November 2017 until Januari 2018 at Blang Krueng village, Baitussalam sub-district, Aceh Besar Regency and Physiology Laboratory, faculty of Agriculture, Syiah Kuala University. This research was conducted Randomized Block Design factorial pattern 3 x 2 with 3 replications. The factors studied in this research are mycoriza types and the population of  the plants. 3 types of mycoriza types are glomus mosseae mycoriza, gigaspora and the mixture of glomus mosseae and gigaspora. and 2 types of the population of  the plants are using one seed and two seed. The result of this research pointed out that the using of the mixture mycoriza type generally increased the growth and yield of sweet corn.  Whereas, the using of the population  of  the plants with one seed had showed the best result. And the better interaction is obtained in the mixture mycoriza with the population of  the plants in there after a good interaction is present in mixed mycorrhizae species with plan population on the diameter of tehstem 15 HST and 30 HST, the weight of the root base and the weight of the weighted fruit, the diameter of the cob weight of the without any weight fruit and the potential yield per hactare.


2020 ◽  
Vol 22 (2) ◽  
pp. 85-92
Author(s):  
Bilman Wilman Simanihuruk ◽  
Yanti Oktavia Lumbantoruan ◽  
Herry Gusmara

[APPLICATION OF PALM OIL SLUDGE DOSE AND KCl FERTILIZER AGAINST GROWTH AND YIELD OF CORN (Zea mays L) ON ULTISOLS IN BENGKULU]. This study aims to determine the dose of palm oil sludge (POS) and the optimal dose of KCl fertilizer to the growth and yield of corn. The study was conducted from June to October 2018. The design used is Randomized Completely Block Design (RCBD) which is arranged in factorial with two treatment factors. The first factor is the POS consisting of 3 levels: 0 tons/ha, 10 tons/ha, and 20 tons/ha. The second factor is the dose of KCl fertilizer consisting of 3 levels: 0 kg/ha, 100 kg/ha, and 200 kg/ha. The results showed no real influence on the combination of POS and KCl fertilizer treatment on the growth and yield of corn. The 10 tons/ha POS dose delivers the best results on the entire observation variable. KCl fertilizer indicates a different effect is not noticeable on all observed variables.


GEMA AGRO ◽  
2018 ◽  
Vol 23 (1) ◽  
pp. 24 ◽  
Author(s):  
Petrus Kaliang Lelu ◽  
Yohanes Parlindungan Situmeang ◽  
Made Suarta

This study aims to determine the effect of biochar dosage and compost fertilizer and its interaction on the growth and yield of corn crops. This experiment used a randomized block design (RBD) with a factorial pattern consisting of 2 factors. The first factor was the dose of biochar (B) consisting of 4 levels, namely: 0 ton ha-1 (B0), 5 ton ha-1 (B1), 10 ton ha-1 (B2), 15 ton ha-1 (B3). The second factor is the dosage of compost fertilizer (K) consisting of 2 levels: 0 ton ha-1 (K0), and 20 ton ha-1 (K1). The results showed that the interaction between the treatment of biochar dose and compost fertilizer had no significant effect on all observed variables. Biochar and compost treatment have significant effect to most observed variables, except on leaf area and harvest index have no significant effect. Treatment of biochar with a dose of 10 ton ha-1 gave the highest dry kiln seedlings weight of 7.83 tons increased by 35.60% compared to the lowest dose without biochar of 5.77 tons. Treatment of compost doses of 20 ton ha-1 gave the highest dry seed oven per hectare weight of 7.42 tons increased by 16.60% when compared with the lowest yield on treatment without compost dose as much as 6.37 tons.


Scientifica ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Seyed Habib Shojaei ◽  
Khodadad Mostafavi ◽  
Ali Omrani ◽  
Saeed Omrani ◽  
Seyed Mohammad Nasir Mousavi ◽  
...  

The present study investigated the stability and adaptability of maize (Zea mays L.) hybrids. In this study, 12 maize hybrids were planted and examined considering the grain yield. The experiment was arranged in a randomized complete block design (RCBD) with three replications in four research stations in Iran during two crop years. The combined analysis of variance showed that genotype-environment interactions were significant at one percent probability level. The grain yield can stabilize, and hybrids with specific adaptability are recommended to each environment. Hybrids with specific adaptability can be recommended to all types of the environment. Means comparison yield of the genotypes identified DC370 as a high-yield genotype. Regarding AMMI analysis, genotype × environment interactions (GEIs) and two first components were found significant. The SC647 genotype was identified as the most stable genotype. Regarding the stability parameters, SC647 and KSC705 genotypes were selected as the most stable genotypes. From AMMI1 and AMMI2 graphs, the SC647 genotype was identified as the most stable genotype compared with other hybrids.


2014 ◽  
Vol 2 (1) ◽  
pp. 55-62 ◽  
Author(s):  
S Umesha ◽  
M Divya ◽  
K Prasanna ◽  
R Lakshmipathi ◽  
K Sreeramulu

A field experiment to study the “Comparative efficiency of organics and biofertilizers on growth and yield of maize (Zea mays L.)” was conducted during Kharif 2011 at farmer field in Beluguli village, Chikkanayakanahalli taluk (Tumkur district). The maize cultivar Nithyashree (NAH 2049) was used in the study. The field experiment was laid out in Randomized Complete Block Design with fourteen treatments and three replications. Results of the treatment (T13) having recommended dose of NPK + Azotobacter chroococcum + Bacillus megaterium + Pseudomonas fluorescence + enriched compost has showed highest plant height at 30, 60, 90 days after sowing and at harvest (120 days) (31.70, 180.93, 186.07 and 188.13 cm respectively). The highest total dry matter production at harvest (375.80 g) and yield parameters like Weight of cob (207.63 g), Grain yield per plant (158.93 g), Grain yield per ha (54.53 q) and Test weight of seeds (33.10 g) was also found highest in this treatment and available nutrient content in soil after crop harvest i.e., nitrogen (185.40 Kg ha-1), phosphorous (38.83 Kg ha-1) and potassium (181.47 Kg ha-1) was also found highest in the same treatment combination.


Author(s):  
C. Supriya ◽  
P. MuraliArthanari ◽  
R. Kumaraperumal ◽  
A. P. Sivamurugan

A field experiment was conducted in a randomized complete block design to screen the optimum spray fluid of herbicide application for drone based on visual toxicity and weed control efficiency in maize (Zea mays L.) during the summer season (March 2021) at eastern block farms of Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu. Three herbicide treatments namely Atrazine, Tembotrione and 2, 4-D with recommended dosages, 75% and 125% as pre-emergence herbicides applied on 3 days after, early post-emergence herbicides applied on 15 days after sowing and post-emergence applied on 25 days after sowing respectively. Totally thirty treatments with different spray fluids such as 500, 400, 300, 200, 100, 80, 60, 40, 30 L ha-1 and 20 L ha-1 were replicated three times. The study revealed that T5- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione – post emergence 2, 4-D (spray fluid 100 L of water ha-1),T6- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione–post emergence 2, 4-D (spray fluid 80 L of water ha-1), T7- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione – post emergence 2, 4-D (spray fluid 60 L of water ha-1) and T8- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione – post emergence 2, 4-D (spray fluid 40 L of water ha-1) produced the best results with respect to phytotoxicity and weed control efficiency. Based on the results it was concluded that the application of spray fluid 80 L ha-1 was optimum for herbicide application through drones with recommended dosage pre emergence Atrazine 1 kg a.i ha-1 on 3 days after sowing – early post emergence Tembotrione 120 g a.i ha-1 on 15-20 days after sowing - post emergence 2, 4-D 1 kg a.i ha-1 on 30 - 35 days after sowing.


Author(s):  
KKA Alate ◽  
G Mawussi ◽  
KD Ayisah ◽  
K Sanda

Soils fertility declining limits agricultural production in Togo where maize (Zea mays L.) is most cereal cropping and base staple food. Currently, mineral fertilizers are beyond the reach of farmers due to high price and limited availability. This study assessed the response of household urban wastes compost to the growth and yield of maize Ikenne variety. Experiments were performed in rainy season of years 2018 and 2019 at Teaching Research and Demonstration Farm of Agronomy School in University of Lome, Togo. Agronomic trials were set at randomized in complete block design with three replications, where control plots, compost plots at different doses and mineral fertilizers plots constituted the treatments. The growth parameters, including plant height, stem girth, leaf area and number of leaves per plant, were measured at the milky maize stage. The yield parameters, including length and girth of cob, thousand grains weight, grain yield and straw yield, were collected at harvesting. Data were statistically analyzed. The results showed three distinct homogeneous groups of treatments both for growth and yield parameters. Plots treated with compost at 30 t ha-1 and 40 t ha-1 constitute the best group, which differs significantly from the second group formed by plots treated with compost at 10 t ha-1 and 20 t ha-1 and mineral fertilizer plots. Control treatments constitute the last group. Growth and yield parameters values increase with compost dose. Far from being used alone in place of mineral conventional fertilizer, integrated fertilization based on combination of mineral fertilizer and compost of household urban wastes will investigated in maize cropping in southern Togo for optimal compost dose to recommend. Int. J. Agril. Res. Innov. Tech. 10(1): 97-101, June 2020


2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Ellis Nihayati ◽  
Anisa Rosida ◽  
Nur Azizah

Temulawak is rarely cultivated with any intensity because it has a long harvest time and requires wide spacing. One of the solutions for temulawak cultivation is through applying intercropping systems with corn. The current research aimed to determine the most advantageous intercropping planting pattern of temulawak and corn. The experiment adhered to a randomized block design with six treatments and four replications. The treatments were: T1 = strip cropping; T2 = row cropping; T3 = strip-relay temulawakcorn; T4 = row-relay temulawak-corn; T5 = strip-relay corn-temulawak; and T6 = rowrelay corn-temulawak. The results showed that different cropping patterns of an intercropping system of temulawak and corn affected the growth and yield of both crops. The most suitable polyculture cropping pattern, based on land equivalence ratios (LER) values and R/C ratios, was strip cropping that produced rhizhomes of temulawak of up to 2.68 ton ha-1 and of corn of up to 5.24 ton ha-1. The LER value was 1.22 and the revenue/cost (R/C) ratio was as much as 1.43 with a net profit of as much as IDR 9,509,000.


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