Accumulation of macronutrients and productivity of potato with foliar application of biofertilizer

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY International Journal of Agriculture and Natural Resources Pub Date : 2021-01-01 DOI:10.7764/ijanr.v48i2.2269
Lucas Pinheiro Araújo, Roberta Camargos Oliveira, Regina Maria Quintão Lana, José Magno Queiroz Luz, João Paulo Apolinário Guimarães, Erlani Oliveira Alves
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Abstract

The addition of organic compounds to fertilizers has shown positive effects on plant metabolism. This study aimed to evaluate the macronutrient accumulation and productivity of potato with the use of biofertilizer (BF) applied to the leaves. A 2×7 factorial plot with a plot subdivided in time and ten replications used two forms of fertilization: a chemical fertilizer with conventional NPK (nitrogen, phosphorus and potassium: control) and conventional fertilizer plus biofertilizers (BF); evaluations were performed 31, 41, 51, 61, 71, 81 and 91 days after planting (DAP) using the Jelly cultivar. The BF increased the maximum N, K, Ca and Mg accumulations in the leaves, especially N and K, with the period of greatest accumulation occurring between 62 and 66 DAP. The accumulations of N, P, K, Ca and Mg in the tubers accelerated from 71 DAP. At the end of the cycle (e.g., 91 DAP), the increases in the nutrient accumulations of N, P, K and Ca were between 30 and 64% higher for the BF application, the Mg accumulations doubled and the S accumulations exhibited no differences between the evaluation periods. For the leaves, the following decreasing sequence of maximum accumulation was observed: K>N>Ca>Mg>S>P. For the tubers, the following decreasing sequence was obtained: K>N>P>Ca>Mg>S. The use of biofertilizers caused higher productivity of tubers of greater caliber and soluble solids contents in the cv. Jelly potato tubers.
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叶面施磷肥对马铃薯宏量营养素积累及产量的影响
在肥料中添加有机化合物对植物代谢有积极的影响。本研究旨在评价马铃薯叶片施生物肥对其宏量营养素积累和产量的影响。一个2×7因子小区,按时间细分,重复10次,使用两种形式的施肥:化学肥料与常规NPK(氮,磷和钾:对照)和常规肥料加生物肥料(BF);分别在种植后31、41、51、61、71、81和91 d进行评价。BF增加了叶片中N、K、Ca和Mg的最大积累量,其中N和K的积累量最大,在62 ~ 66 DAP之间积累量最大。块茎中N、P、K、Ca和Mg的积累从71 DAP开始加速。在循环结束时(例如,91 DAP),施用BF的N、P、K和Ca的养分积累增加了30%至64%,Mg的积累增加了一倍,S的积累在评估期之间没有差异。叶片的最大积累量递减顺序为:K>N>Ca>Mg>S>P。对于块茎,从大到小的顺序为:K>N>P>Ca>Mg>S。施用生物肥料可使块茎产量提高,块茎直径增大,可溶性固形物含量增加。果冻薯块茎。
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