Agronomic performance of cassava fertilized with phosphorus doses

IF 0.6 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY
F. P. D. M. Silveira, W. D. A. R. Lopes, P. R. Oliveira, M. G. D. Santos, Alex Lima Monteiro, G. L. Santos, Silvana Fraga Silva, Ê. G. Souza, Lindomar Maria da Silveira, A. P. B. Júnior
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引用次数: 0

Abstract

We have evaluated the agronomic performance of table cassava cultivars fertilized with phosphorus doses in the Brazilian Semiarid Region. Two agricultural crops were grown at the Rafael Fernandes Experimental Farm, Mossoró, RN, from June/2018 to April/2019 and from June/2019 to April/2020. The experimental design was in randomized blocks, arranged in subdivided plots, with four replications. In the plots, doses of phosphorus were applied (0, 60, 120, 180 and 240 kg P2O5 ha-1), and in the subplots, the table cassava cultivars (Água Morna, BRS Gema de Ovo, Recife and Venâncio). The following were evaluated: dry matter of leaf, stem, and commercial root; harvest index; commercial root number; commercial productivity and aerial part productivity. The cultivars used had high root and aerial part productivities indicating that their irrigated cultivation is appropriate under the conditions of the Semiarid region of Rio Grande do Norte. The cultivars Água Morna, BRS Gema de Ovo and Recife are more efficient in the use of phosphorus, obtaining high productivity even in the absence of phosphate fertilization. The cultivar Venâncio is more responsive to phosphate fertilization, as it needs an input of this nutrient to increase its productivity.
施磷量对木薯农艺性状的影响
我们评估了巴西半干旱地区施用磷剂量的木薯品种的农艺性能。2018年6月至2019年4月以及2019年6月和2020年4月,RN州莫索罗的Rafael Fernandes实验农场种植了两种农作物。实验设计采用随机区组,分为四个重复区。在地块中,施用了一定剂量的磷(0、60、120、180和240 kg P2O5 ha-1),在子地块中,则施用了木薯品种(Água Morna、BRS Gema de Ovo、Recife和Venâncio)。对叶、茎和商品根的干物质进行了评价;收获指数;商业根数;商业生产力和航空部件生产力。所用的品种具有较高的根系和地上部生产力,表明其灌溉栽培在北里奥格兰德州半干旱地区的条件下是合适的。品种Água Morna、BRS Gema de Ovo和Recife在磷的利用方面更有效,即使在没有磷肥的情况下也能获得高产。品种Venâncio对磷肥的反应更大,因为它需要这种营养素的输入来提高生产力。
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来源期刊
Bioscience Journal
Bioscience Journal Agricultural and Biological Sciences-General Agricultural and Biological Sciences
CiteScore
1.00
自引率
0.00%
发文量
90
审稿时长
48 weeks
期刊介绍: The Bioscience Journal is an interdisciplinary electronic journal that publishes scientific articles in the areas of Agricultural Sciences, Biological Sciences and Health Sciences. Its mission is to disseminate new knowledge while contributing to the development of science in the country and in the world. The journal is published in a continuous flow, in English. The opinions and concepts expressed in the published articles are the sole responsibility of their authors.
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