Grain yield performance of corn in different plant arrangements

IF 0.9 4区农林科学 Q3 AGRONOMY

Revista Caatinga Pub Date : 2023-09-01 DOI:10.1590/1983-21252023v36n306rc

Paulo H. Cazarim, G. D. Shimizu, L. H. Fantin, M. D. A. Silva, C. Zucareli

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Abstract

ABSTRACT Sowing arrangements composed of double-row spacing in corn can favor the interception of solar radiation by the canopy and, consequently, the yield performance of the crop. However, it is possible that the microclimate provided by this spacing, especially at high plant densities, favors the occurrence of leaf diseases. Thus, the objective was to evaluate the effect of 0.45 m and double-row spacing arrangements on the severity of foliar diseases and yield performance of corn grown in the first and second-crop seasons. Two independent experiments were conducted (with and without the fungicide fluxapyroxad + pyraclostrobin) in the first and second-crop seasons in a randomized block design arranged in a split-plot scheme with four repetitions. The plots consisted of spacing (0.45 m) and double-row (0.30 × 0.60 m), and the subplots, four plant densities (59,200, 74,000, 81,400, and 96,200 plants ha-1). In the plant density factor, in the second-crop season, there is a decrease in the severity of white spot as plant density is increased. Also, for the plant density factor, in the first-crop season, there may be a significant yield increase as the plant density is increased.

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不同种植方式下玉米的产量表现

摘要玉米双列行距的播种安排有利于冠层对太阳辐射的拦截，从而提高作物的产量。然而，这种间距提供的小气候，特别是在高植物密度下，有可能有利于叶病的发生。因此，目的是评估0.45米和双排间距安排对第一和第二季玉米叶片病害严重程度和产量表现的影响。在第一和第二个作物季节进行了两个独立的实验（使用和不使用杀真菌剂氟沙吡唑菌胺+吡唑菌酯），采用随机区组设计，以四次重复的分裂地块方案排列。小区由间距（0.45 m）和双排（0.30×0.60 m）组成，子小区有四种植物密度（59200、74000、81400和96200株ha-1）。在植物密度因子中，在第二个作物季节，随着植物密度的增加，白斑的严重程度降低。此外，对于植物密度因子，在第一个作物季节，随着植物密度的增加，产量可能会显著增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Caatinga AGRONOMY-

CiteScore

2.10

自引率

11.10%

发文量

审稿时长

6-12 weeks

期刊介绍： A Revista Caatinga é uma publicação científica que apresenta periodicidade trimestral, publicada pela Pró-Reitoria de Pesquisa e Pós-Graduação da Universidade Federal Rural do Semi-Árido – UFERSA, desde 1976. Objetiva proporcionar à comunidade científica, publicações de alto nível nas áreas de Ciências Agrárias e Recursos Naturais, disponibilizando, integral e gratuitamente, resultados relevantes das pesquisas publicadas.