Manure fertilization increases soil respiration and creates a negative carbon budget in a Mediterranean maize (Zea mays L.)-based cropping system

CATENA ◽  
2017 ◽  
Vol 151 ◽  
pp. 202-212 ◽  
Author(s):  
Roberto Lai ◽  
Pasquale Arca ◽  
Alessandra Lagomarsino ◽  
Chiara Cappai ◽  
Giovanna Seddaiu ◽  
...  
Keyword(s):  
Zea Mays ◽  
Soil Respiration ◽  
Carbon Budget ◽  
Zea Mays L ◽  
Cropping System

PERFORMANCE PRODUTIVA DE CULTIVARES DE MILHO EM TRÊS SISTEMAS DE CULTIVO NO LESTE MARANHENSE

2017 ◽  
Vol 15 (3) ◽  
pp. 520
Author(s):  
FRANCISCO CHARLES DOS SANTOS SILVA ◽  
MARIA DA CRUZ CHAVES LIMA MOURA ◽  
JOSÉ RONEILSON SILVA COSTA ◽  
EGON BASTOS DE OLIVEIRA ◽  
ITALO JHONNY COSTA
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Block Design ◽  
Cropping System ◽  
Farming Systems ◽  
Correct Choice ◽  
Local Conditions ◽  
Maize Cultivars ◽  
Randomized Block Design ◽  
The City

RESUMO – O Leste Maranhense corresponde à mais nova fronteira agrícola do Brasil. Entretanto, fatores limitantesda produtividade, como a escolha correta da variedade e o sistema de cultivo mais adequado para as condições locais,ainda são desconhecidos. Objetivou-se estudar o desempenho produtivo de 17 genótipos de milho, sob três sistemasde cultivo para a região. Foram realizados dois experimentos, um na cidade de Chapadinha e outro na cidade de Brejo,sendo avaliados 17 genótipos ao todo. Os ensaios foram dispostos no delineamento em blocos casualisados com quatrorepetições em esquema fatorial 3x10 [10 cultivares e três sistemas de cultivo (plantio com cobertura de palha decarnaúba; plantio sem cobertura; plantio intercalado com feijão caupi)]. O sistema de cultivo com palha de carnaúba,independentemente do genótipo de milho e do local de avaliação, proporcionou os maiores rendimentos de grãos.Em Chapadinha, os genótipos mais produtivos foram as variedades de polinização aberta Caiano e Al-Bandeirante,o híbrido duplo AGN 1051, os híbridos triplos 2B 433, BRS 3060 e CMS 3E482 e o híbrido simples P 3646 H. ParaBrejo, os melhores resultados foram obtidos pelos híbridos duplos 2B 707 HX e AGN 1051 e pelos híbridos simples2B 604 HX, 30 F35 H e P 3646 H.Palavras-chave: Zea mays L., Palhada, Rendimento de grãos.PRODUCTIVE PERFORMANCE OF MAIZE CULTIVARS IN THREE FARMING SYSTEMS IN EAST MARANHÃO STATEABSTRACT - East Maranhão State is the newest agricultural frontier in Brazil. However, productivity limiting factorssuch as the correct choice of variety and the cropping system more suitable to the local conditions are still unknown.The objective of this study was to evaluate the productive performance of 17 maize genotypes under three cultivationsystems for the region. Two experiments were carried out, one in the city of Chapadinha and another in the city ofBrejo, evaluating 17 genotypes. The trials were arranged in a randomized block design with 4 replications in a 3x10factorial scheme [10 cultivars and 3 cultivation systems (planting with cover of carnaúba straw, plantation withoutcover, intercropping with cowpea). The use of carnaúba straw provided the highest grain yields, regardless the maizegenotype and the evaluation site,. In Chapadinha the most productive genotypes were the open-pollinated varietiesCaiano and Al-Bandeirante, the double hybrid AGN 1051, the triple hybrids 2B 433, BRS 3060 and CMS 3E482 andthe simple hybrid P 3646 H. For Brejo the best results were obtained by the double hybrids 2B 707 HX and AGN 1051and by the simple hybrids 2B 604 HX, 30 F35 H and P 3646 H.Keywords: Zea mays L., Straw, Grain Yield.

Evaluation of Maize (Zea mays L.) + Legume Intercropping System for Productivity, Profitability, Energy Budgeting and Soil Health in Hill Terraces of Eastern Himalayan Region

2020 ◽  
Author(s):  
L. K. Baishya ◽  
Temjenna Jamir ◽  
N. Walling ◽  
D. J. Rajkhowa
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Microbial Biomass Carbon ◽  
Soil Health ◽  
Cropping System ◽  
Himalayan Region ◽  
Energy Productivity ◽  
Available N ◽  
Soil Microbial ◽  
Eastern Himalayan Region

Three-year (2014-2016) field experiment was conducted for evaluation of maize (Zea mays L.) based intercropping system for productivity, profitability, energy budgeting and soil health in Eastern Himalayan region. The treatments consisted of four sole crop viz. maize, soybean, groundnut, cowpea and six intercropping treatments viz. maize + groundnut (1:1), maize + soybean (1:1), maize + cowpea (1:1) and strip cropping of maize + groundnut (4:4), maize + soybean (4:4), maize + cowpea (4:4). The highest maize equivalent yield (10.2 t ha-1) was recorded in maize + groundnut cropping system (1:1) followed by maize + soybean (1:1) with 8.9 t ha-1. The highest SNBC (soil microbial biomass carbon) (66.2 mg g-1) and organic carbon (1.3%) were recorded with the cultivation of cowpea as a sole or intercrop. Strip cropping system, maize + cowpea (4:4) recorded the highest soil available N, P2O5 and K2O kg ha-1, highest energy efficiency (12.53) and energy productivity 955.01 g MJ-1

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