Crop rotation biomass and arbuscular mycorrhizal fungi effects on sugarcane yield

被引:15
作者
Ambrosano, Edmilson Jose [1 ]
Azcon, Rozario [2 ]
Cantarella, Heitor [3 ]
Bovi Ambrosano, Glaucia Maria [5 ]
Schammass, Eliana Aparecida [6 ]
Muraoka, Takashi [7 ]
Ocheuze Trivelin, Paulo Cesar [7 ]
Rossi, Fabricio [1 ]
Guirado, Nivaldo [1 ]
Goncalves Ungaro, Maria Regina [4 ]
Salome Teramoto, Juliana Rolim [1 ]
机构
[1] Apta, Polo Reg Ctr Sul, BR-13400970 Piracicaba, SP, Brazil
[2] Estacao Expt Zaidin CSIC, Granada 18008, Spain
[3] Apta, IAC, Ctr Solos & Recursos Ambientais, BR-13001970 Campinas, SP, Brazil
[4] Apta, IAC, Ctr Plantas Graniferas, BR-13001970 Campinas, SP, Brazil
[5] Univ Estadual Campinas, Depto Odontol Social, FOP, BR-13414903 Piracicaba, SP, Brazil
[6] Apta, IZ, Bioestat, BR-13460000 Nova Odessa, SP, Brazil
[7] USP, CENA, BR-13400970 Piracicaba, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
green manure; legumes; biological nitrogen fixation; sugarcane stalk yield; GREEN MANURE; INFECTION; NITROGEN; ROOTS; N-15;
D O I
10.1590/S0103-90162010000600011
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
Sugarcane (Saccharum spp.) is an important crop for sugar production and agro-energy purposes in Brazil. In the sugarcane production system after a 4- to 8-year cycle crop rotation may be used before replanting sugarcane to improve soil conditions and give an extra income. This study had the objective of characterizing the biomass and the natural colonization of arbuscular mycorrhizal fungi (AMF) of leguminous green manure and sunflower (Helianthus annuus L.) in rotation with sugarcane. Their effect on stalk and sugar yield of sugarcane cv. IAC 87-3396 grown subsequently was also studied. Cane yield was harvested in three subsequent cuttings. Peanut cv. IAC-Caiapo, sunflower cv. IAC-Uruguai and velvet bean (Mucuna aterrimum Piper and Tracy) were the rotational crops that resulted in the greater percentage of AMF. Sunflower was the specie that most extracted nutrients from the soil, followed by peanut cv. IAC-Tatu and mung bean (Vigna radiata L. Wilczek). The colonization with AMF had a positive correlation with sugarcane plant height, at the first cut (p = 0.01 and R = 0.52) but not with the stalk or cane yields. Sunflower was the rotational crop that brought about the greatest yield increase of the subsequent sugarcane crop: 46% increase in stalk yield and 50% in sugar yield compared with the control. Except for both peanut varieties, all rotational crops caused an increase in net income of the cropping system in the average of three sugarcane harvests.
引用
收藏
页码:692 / 701
页数:10
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