DETERMINATION OF WEED DENSITY AND FREQUENCY AT DIFFERENT SITES OF AGRICULTURE RESEARCH FORM, PESHAWAR.

JOURNAL OF WEED SCIENCE RESEARCH Pub Date : 2022-09-30 DOI:10.28941/pjwsr.v28i3.996

L. Luqman

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Abstract

A survey was conducted in the month of January 2015, to record the weed density and frequency in different crops in Agriculture Research Farm. A total two farms randomly selected for the survey. The data were recorded on the density m-2and the frequency (%). Quadrate method was use for recording data. In the first field maximum value of density m-2 (93) were recorded for Cynodon dactylon while the minimum value of density m-2 (6) were recorded for the Convolvulus arvensis and Melilotus indica. Similarly the maximum value of frequency (80%) were recorded for the Cynodon dacrylon while the minimum value of frequency (20%) were recorded for the Convolvulus arvensis . In the second field the maximum value of density m-2(56) were recorded for the Euphorbia helioscopia while the minimum value of density m-2 (6) were recorded for the Silybum marianum. Similarly the maximum value of frequency (100%) were recorded for Euphorbia helioscopia while the minimum value of frequency (20%) were recorded for fumaria indica, Silybum marianum,Coronopus didymus and Sonchus olereaceus . It is concluded that the weed prevailing in an area should be identify and managed to harvest potential yields of various crops.

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白沙瓦农业研究中心不同地点杂草密度和频率的测定。

2015年1月，对农业研究农场不同作物的杂草密度和发生频率进行了调查。总共随机选择了两个农场进行调查。记录密度m-2和频率(%)。采用方形法记录数据。第一个田间，长爪蟹的密度m-2最大(93)，旋花(Convolvulus arvensis)和茉莉(Melilotus indica)密度m-2最小(6)。同样地，在Cynodon dacrylon中记录了频率的最大值(80%)，而在Convolvulus arvensis中记录了频率的最小值(20%)。在第二个大田中，大蓬的密度m-2最大(56)，水飞蓟的密度m-2最小(6)。同样，大戟的频率最大值为100%，印度富马、水飞蓟、小冠蛾和水飞蛾的频率最小值为20%。结论是，一个地区普遍存在的杂草应该被识别和管理，以收获各种作物的潜在产量。

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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JOURNAL OF WEED SCIENCE RESEARCH

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