EFFECT OF FERTILIZATION WITH SURGE FLOW TECHNIQUE ON APPLICATION EFFICIENCY, WATER PRODUCTIVITY, YIELD AND IRRIGATION COST OF MAIZE CROP (ZEA MAYS L.)

ABSTRACTThis research was conducted in the Analitic laboratory of Palangka Raya Univercity and in the screenhouse of Agriculture Cultivation Department, Palangka Raya Univercity. The purpose of thisexperiment was to determine the effect of dolomit and chicken manure to some soil chemicalproperties of acid sulfate soil and growth of Maize Crop (Zea mays L.). The research was arranged inComplete Ramdomized Design with two factors and three replications. The first factors were level ofdolomit with three levels namely 0 ; 1,5 ; 3,0 times exchangeable alumunium. The second factors werelevel of chicken manure with three levels namely 0, 6 and 12 t ha-1. The results showed that theinteraction between dolomit and chicken manure significantly affected increasing the soil pH anddecreasing exchangeable alumunium. The combination level of dolomit in level 1,5 timesexchangeable alumunium with application of 6 ton.ha-1 chicken manure will be optimum increasingthe soil pH and decreasing exchangeable alumunium. The application a single factor of dolomit notsignificantly affected P-availabilityand growth of Zea mays (plant height, number of leaf and area leafindex) in age 2, 3, 4, 5, 6 weeks after planting. The application of chicken manure only significantlyaffected increasing P- availabilityand growth of Zea mays (plant height, number of leaf and area leafindex) in age 2, 3, 4, 5, 6 weeks after planting. Optimum dosage of chicken manure was 6 t ha-1.Keywords: sulfate soil, dolomite, soil chemical, chicken manures.

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MODELING APPLIED TO SOWING DATE OF IRRIGATED MAIZE

Revista Brasileira de Milho e Sorgo ◽

10.18512/1980-6477/rbms.v17n2p201-215 ◽

2018 ◽

Vol 17 (2) ◽

pp. 201

Author(s):

IVALDO MARTINS BOGGIONE ◽

CAMILO DE LELIS TEIXEIRA DE ANDRADE ◽

JOÃO CARLOS FERREIRA BORGES JÚNIOR ◽

JOÃO HERBERT MOREIRA VIANA

Keyword(s):

Zea Mays ◽

Risk Analysis ◽

Goodness Of Fit ◽

Zea Mays L ◽

Sprinkler Irrigation ◽

Sowing Date ◽

Minas Gerais ◽

Goodness Of Fit Test ◽

Yield Data ◽

Maize Crop

ABSTRACT – In Brazil, the rainfed maize crop may undergo yield breaks due to uncertainties in the rainfall distribution. Irrigation can be a management alternative that, however, requires evaluation and planning to be helpful. The objective of this work was to analyze the simulated yield data of irrigated maize in counties of Minas Gerais state, Brazil. The CSM-CERES-Maize model was used to simulated weekly sowings of maize considering optimum agronomic conditions. A sprinkler irrigation scheme with 80% efficiency was used with automatic applications when the crop withdrew 50% of the soil available water. The harvest was scheduled to happen automatically when the crop had reached physiological maturity. The results were statistically analyzed for each county, based on goodness of fit test, ANOVA, Tukey’s test and risk analysis (stochastic dominance). The most promising sowing period was from January 16 to March 27 for all locations, except for Janaúba, for which the best sowing window was from November 14 to January 2. The treatments of highest average simulated maize yield stochastically dominated the other treatments evaluated. The CSM-CERES-Maize model proved to be a useful tool to help making decision in irrigated maize crop systems.Keywords: Zea mays L., CSM-CERES-Maize, DSSAT, risk analysis. MODELAGEM APLICADA A DATAS DE SEMEADURA DE MILHO IRRIGADO RESUMO – No Brasil, a produção de milho de sequeiro pode sofrer quebras de rendimento devido a irregularidades na distribuição de chuvas. A irrigação pode ser uma alternativa de manejo que, todavia, requer avaliação e planejamento para ser benéfica. O objetivo deste trabalho foi analisar a produtividade simulada de milho irrigado em municípios do estado de Minas Gerais, Brasil. O modelo CSM-CERES-Maize foi utilizado para simular semeaduras semanais de milho, assumindo condições agronômicas ótimas. Considerou-se um esquema de irrigação por aspersão com 80% de eficiência, com aplicações automáticas quando a planta extraísse 50% da água disponível do solo. A colheita foi programada para acontecer automaticamente quando a cultura atingisse a maturidade fisiológica. Os resultados foram estatisticamente analisados para cada município, com base em teste de aderência, ANOVA, teste de Tukey e análise de risco (dominância estocástica). O período de semeadura mais promissor foi de 16 de janeiro a 27 de março, para todos os locais, exceto Janaúba, em que a melhor janela de semeadura foi de 14 de novembro a 2 de janeiro. Os tratamentos de maior rendimento médio simulado de milho dominaram estocasticamente os demais tratamentos avaliados. O modelo CSM-CERES-Maize demonstrou ser uma ferramenta útil para auxiliar na tomada de decisão em sistemas de produção de milho irrigado.Palavras-chave: Zea mays L., CSM-CERES-Maize, DSSAT, análise de risco.

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The Effect of Mineral, Organic and Biofertilizeres on the Growth of Zea mays L.

Al-Qadisiyah Journal For Agriculture Sciences (QJAS) (P-ISSN 2077-5822 E-ISSN 2617-1479) ◽

10.33794/qjas.vol7.iss2.25 ◽

2018 ◽

Vol 7 (2) ◽

pp. 66-77

Author(s):

Bushra Mahmoud Alwan ◽

Ahmed Majid Kareem

Keyword(s):

Zea Mays ◽

Dry Matter ◽

Zea Mays L ◽

Organic Fertilizer ◽

Organic Fertilizers ◽

Control Treatment ◽

Mineral Fertilizers ◽

Maize Crop ◽

Maize Plants ◽

Planting Season

An Implemented pot experiment has been conducted in Al-Qadisiyah city - sadder AL- Yusufiya - District 9 in Spring planting season 2016 to study the effect of the overlap between the mineral , organic and bio fertilization in some growth indicators to maize crop (Zea mays) in Silt Loam texture soils with factorial experiement according to completely randomize design (Complete random design) and with three replicates. The expenneit has been done by adding mineral fertilizers (240 kg N. ha-1 and 80 kg P. ha-1 and 120 kg K. ha-1) three levels (0, 50% and 100%) respectively; and two levels of organic fertilizer (0 and 10 Mg. ha-1) respectively; and two levels of bio-fertilizer (0 and 2 ml. L-1) respectively to the irrigation water. The addition of mineral , organic and bio fertilizers has a significant effecct on the dry matter amount and the treatment (M2O1B1) is given the highest average of the dry matter,which reaches to 57.27 g.pot-1 as compared with the control treatment (M0O0B0), reacches to 20.46 g.pot-1 and the increasing percentage reach to 179.91%. There are no significant differences between (M1O1B1) and (M2O1B1). The triple overlap among the metal and organic fertilizers and bio has a significant effect on increasing the percentages of N, P and K in maize plants%, the treatment (M2O1B1) has achieved the highest average of 3.67% N and 0.49% P and 2.19% K respectively, compared with the treatment control (M0O0B0) 2.21% N and 0.23% P and 1.33% K sequentially with increasing which presentage reached to 66.06 N% and 113.04 P% and 64.66 K%. There are no significant differences between the treatments (M1O1B1) and (M2O1B1).

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