Organomineral Fertilizer as Source of P and K for Sugarcane

被引：33

作者：

Costa Crusciol, Carlos Alexandre ^{[1
]}

de Campos, Murilo ^{[1
]}

Martello, Jorge Martinelli ^{[2
]}

Alves, Cleiton Jose ^{[1
]}

Costa Nascimento, Carlos Antonio ^{[1
]}

dos Reis Pereira, Julio Cesar ^{[1
]}

Cantarella, Heitor ^{[3
]}

机构：

[1] Sao Paulo State Univ UNESP, Coll Agr Sci, Dept Crop Sci, Lageado Expt Farm, POB 237, BR-18610034 Botucatu, SP, Brazil

[2] Sugarcane Technol Ctr CTC, POB 162, BR-13400970 Piracipaba, SP, Brazil

[3] Agron Inst Campinas IAC, Soils & Environm Resources Ctr, Ave Barao de Itapura 1481, BR-13020902 Campinas, SP, Brazil

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

关键词：

AMMONIA VOLATILIZATION; PHOSPHORUS FRACTIONS; NITROGEN; NUTRITION; CHLORIDE; BRAZIL; YIELD; SOIL;

D O I：

10.1038/s41598-020-62315-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Sugarcane (Saccharum spp) crop has high social, economic and environmental importance for several regions throughout the world. However, the increasing demand for efficiency and optimization of agricultural resources generates uncertainties regarding high mineral fertilizer consumption. Thereby, organomineral fertilizers are to reduce the conventional sources consumption. Thus, this study was carried out to evaluate the agronomic and economic sugarcane performancies and the residual effect of P and K under mineral and organomineral fertilization. Growth and technological parameters, leaf and soil nutrients concentration in surface and subsurface layers were analyzed from sugarcane planting (plant cane) until the first ratoon. Agronomic and economic sugarcane efficiency were evaluated. At the first ratoon, resin-extractable P provided by mineral and organomineral fertilizers were, respectively, 15 and 11mgkg(-1) in the 0.0-0.2m, and 28 and 31mgkg(-1) in 0.2-0.4m layer. However, exchangeable K in the 0.0-0.2m layer was 1.88 and 1.58 mmol(c) kg(-1) for mineral and organomineral fertilizers, respectively. The yield gains over the control reached with mineral and organomineral fertilizers were, respectively, 10.99 and 17 Mg ha(-1) at the lowest fertilizer rate; and 29.25 and 61.3 Mg ha(-1) at the highest fertilizer rate. Agronomic and economic organomineral fertilizer efficiencies are more pronounced in plant cane. Summing two harvests, the organomineral is 7% more profitable than mineral fertilizer.

引用

页数：11