Modeling the Emergence and Growth of Alligatorweed at Different Field Capacity Levels

IF 0.8 Q3 Agricultural and Biological Sciences

Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100038

T. Ahmad, A. Tanveer, M. Nadeem, M. Yaseen

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引用次数: 0

Abstract

ABSTRACT: A study focusing on different field capacity levels was planned in the Weed Science Lab, Department of Agronomy, University of Agriculture Faisalabad. Fresh alligatorweed was harvested from the Agronomy fields and cuttings (2 cm length) were made from it. These cuttings were placed at 25%, 50%, 75% and 100% field capacity levels in pots for 25 days. The results of the experiments revealed that at all field capacity levels, fragments of alligatorweed were able to sprout and grow. Increased moisture levels significantly increased the emergence ability and survival of the alligatorweed plants upto a certain level. Compared with the control (25% FC), emergence time of the sprouts in the maximum moisture regime (100% of FC) decreased by 40% (12.94 days vs.7.17 days). By contrast, the survival rate of the fragments decreased by 60% (5 vs. 1.75) although survival and growth rate increased at first with 50% FC and 75% FC. Maximum sprouting and growth were found at 50% field capacity. Field capacity does affect the sprouting capacity of alligatorweed fragments but it has only a little influence on growth parameters. The results suggest that alligatorweed can sustain dry conditions to a great extent and also has the ability to sprout and grow in fully submerged soils.

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不同田间容量水平下短吻鳄草的萌发和生长模拟

摘要:在费萨拉巴德农业大学农学系杂草科学实验室开展了一项针对不同田间能力水平的研究。从农艺学领域收获新鲜的鳄鱼草，并将其切成2厘米长的插条。这些岩屑以25%、50%、75%和100%的田间容量水平放置在花盆中，持续25天。实验结果表明，在所有的田间容量水平下，鳄鱼草的碎片都能够发芽和生长。水分水平的提高在一定程度上显著提高了短吻鳄草的出苗率和成活率。与对照(25% FC)相比，最大水分条件下(100% FC)芽的出苗期缩短了40% (12.94 d vs.7.17 d)。相比之下，尽管在50%和75% FC的情况下，最初的存活率和生长率都有所增加，但片段的存活率下降了60%(5比1.75)。在田间容量为50%时萌发和生长最大。田间容量对短吻鳄草叶片的发芽量有影响，但对生长参数影响不大。结果表明，短吻鳄草能够在很大程度上维持干燥条件，并具有在完全浸没的土壤中发芽生长的能力。

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

Planta Daninha Agricultural and Biological Sciences-Plant Science

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.