11
TVL – AFA (Agricultural Crop
Production NC III)
Activity Sheet Quarter 2
CONTROLLING WEEDS (CTW)
12
REGION VI – WESTERN VISAYAS
TVL 11 – AFA (Agricultural Crop Production NC III)
Activity Sheet No. 1
First Edition, 2020
Published in the Philippines
By the Department of Education
Region 6 – W estern Visayas
Republic Act 8293, section 176 states that: No copyright shall subsist in any
work of the Government of the Philippines. However, prior approval of the government
agency or office wherein the work is created shall be necessary for exploitation of such
work for profit. Such agency or office may, among other things, impose as a condition
the payment of royalties.
This Learning Activity Sheet is developed by DepEd Region 6 – W estern
Visayas.
ALL RIGHTS RESERVED. No part of this learning resource may be
reproduced or transmitted in any form or by any means electronic or mechanical
without written permission from the DepEd Regional Office 6 – W estern Visayas.
Development Team of TVL 11 – AFA (Agricultural Crop Production NC III)
Activity Sheet
Writer:
Milvin I. Zabala
Editor:
Zenas V. Nicolas
Schools Division Quality Assurance Team:
Marivic I. Tolentino
Mahnnie Q. Tolentino
Division of AKLAN Management Team:
Miguel Mac D. Aposin
Jose Niro R. Nillasca
Dobie P. Parohinog
Marivic I. Tolentino
Mahnnie Q. Tolentino
Regional Management Team:
Ma. Gemma M. Ledesma
Josilyn S. Solana
Elena P. Gonzaga
Donald T. Genine
April C. Velez
Rolando B. Jamora
2
Introductory Message
W elcome to TVL 11 – AFA (Agricultural Crop Production NC III)!
The Learning Activity Sheet i n T L E / T V L – A F A ( A g r i c u l t u r a l C r o p
P r o d u c t i o n N C I I I ) is a product of the collaborative efforts of the
Schools Division of Aklan and DepEd Regional Office VI - W estern Visayas through
the Curriculum and Learning Management Division (CLMD). This is developed to
guide the learning facilitators (teachers, parents and responsible adults) in helping the
learners meet the standards set by the K to 12 Basic Education Curriculum.
The Learning Activity Sheet in TLE/TVL – AFA (Agricultural Crop
Production NC III) is self-directed instructional materials aimed to guide the learners
in accomplishing activities at their own pace and time using the contextualized
resources in the community. This will also assist the learners in acquiring the lifelong
learning skills, knowledge and attitudes for productivity and employment.
For learning facilitator:
The TVL 11 – AFA (Agricultural Crop Production NC III) Activity Sheet will help
you facilitate the Teaching-learning activities specified in each Most Essential
Learning Competency (MELC) with minimal or no face-to-face encounter between
you and learner. This will be made available to the learners with the references/links
to ease the independent learning.
For the learner:
The TVL 11 – AFA (Agricultural Crop Production NC III) Activity Sheet is
developed to help you continue learning even if you are not in school. This learning
material provides you with meaningful and engaging activities for independent
learning. Being an active learner, carefully read and understand the instructions then
perform the activities and answer the assessments. This will be returned to your
facilitator
on
the
agreed
schedule
3
Quarter 2, Week 1 -2
Learning Activity Sheet No.1
Name of Learner: _____________________________________________________
Grade and Section________________________________ Date: _______________
TVL 11 – AFA (Agricultural Crop Production NC III) ACTIVITY SHEET
I.
II.
CONTROLLING WEEDS
Learning Competency with Code
LO 1. Assess weed infestation
1.1 Record weeds and beneficial organisms in the field in accordance
with crop production manuals.
1.2 Report weeds and beneficial organisms in the field in accordance with
crop production manuals.
1.3 Assess scope, density, and size of the infestation based on farm
work procedures.
TLE_AFAACP9- 12CTW-IIa-b- 44
Background Information for Learners
Weeds are among the major groups of pest that farmers always
consider as limiting factors in rice production. If not controlled, weeds can
reduce yield of rice from 44% to 96% by way of competitor to the limited
resources for growth and development such as nutrients, sunlight, and water.
(Donayne, Dindo King M. et.al.2018)
In this activity sheet, concepts on
characteristics of rice weeds,
weed seed reserve (seed bank), prolific seed producers, and classification
of weeds are discussed. In addition, you shall undertake practical
application of these concepts by identifying the different weed species in your
farm or backyard. You will realize that weeds classification is very important in
selecting, designing, planning, and implementing a cost–effective and
environment-friendly weed management strategies and techniques.
Characteristics of Rice Weeds
They are persistent.





Prolific seed producers
Can perpetuate their own species
Efficient seed dispersal
Extensive seed reserve in soil (seed bank)
Dormancy
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Weed Seed Reserve (Seed bank)
In 1 m2 area at 0-15 cm depth =80,407 weeds emerged
804,070,000 viable weed seeds per ha. (Vega and Sierra, 1970)
 Weed seeds planted in 1 m2 at 0-15 cm depth =497,051 weeds emerged
(Kim, 1986)
 Study on 25-year viability of buried weed and crop seeds:
Highest % germination observed was in weed seeds and none on crops
(Pancho, n.d.)

Weeds: Prolific seed producers
Classification of Weeds

Life cycle
Annuals – complete life cycle in less than a year
Perennials –complete life cycle more than a year
 Habitat
Upland – favor well-drained soil
Lowland – favor moist to saturated soil
 Morphology
Broadleaf Sedge Grass
Broadleaves
 Leaves are generally broad and flat,
 usually dominate transplanted rice,
 Members to belong to many families,
 Leaves are fully expanded with netted veins,
Leaves flowers, stems, and branches are broadly arranged in
various shapes, colors, and structures
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Broadleaves example:
Scientific
Name
Local Name
1.Corchorus
oliturius L.
Saluyot
2. Mimosa
pudica L.
3. Physalis
Angulata L.
Makahiya
Tino –tino
Family
Image
Tiliaceae
Mimosaceae
Solanaceae
Sedges
 Triangular stems
 Not as competitive as grasses but can reduce yields if they
become dense
 Member of the family Cyperaceae
 Leaves are also long and narrow but do not have ligules and
auricles
 Leaf veins are also parallel but the leaf sheaths are continuous
around stem
 Stem are triangular in shape and have no nodes and internodes
6
Sedges example:
Scientific Name
1. Cyperus
rotundus L.
2.Fimbristylis
dichotoma
(L) Vahl
3. Cyperus
difformis L.
Local Name
Family
Sudsud, tihoe tihoe
Bungot Bungot
Image
Cyperac
eae
Cyperaceae
Ubod –ubod,
treskantos,
Payong
payong, siraw
-siraw,
Cyperac
eae
Grasses






Similar characteristics with rice
They don’t have ligules and/or auricles
Dominant and competitive
Example: Antena
Members of the family Graminae (Poaceae)
Leaves are long and narrow, stem are round and hollow inside
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Grasses example:
Scientific Name
1.Paspalum
Conjugatum berg
2. Eleusine
indica (L)
Gaertn.
3.Digitaria ciliaris
(Retz.)Koel.
Local Name
Kauat-kauat,
maligoy,
pad-pad,
kulape,
bantotan
Family
Graminae
Paragis, paragtiki
Graminae
Baludgang
an, halos,
saka-saka
Graminae
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Image
III.
Accompanying DepEd Textbook and Educational Sites
Competency- Based Learning Materials Second year (Part 1) Crop
Production NC I (Public Technical Vocational High School) DepEd pp. 54 -63
Adapted
from
a
Powerpoint
presentation
developed
by: Ilar, G., Bautista. M., WEEDS of RICE & their MANAGEMENT (PHILRICE)
PINOY KNOWLEDE BANK. Philippines, 2011 https://www.pinoyrice.com
Donayne, Dindo King M., Martin, Edwin C., Santiago, Salvacion. E.,
Lee Jeong. T. Weeds in Irrigated And Rainfed Lowland Ricefields in the
Philippines. Philippines, 2018
Photo/Images
(PHILRICE)
https://www.pinoyrice.com
PINOY
KNOWLEDE
BANK
IV. Activity Proper
Activity 1
Direction/Instruction: Visit a farm or backyard garden in your locality.
Select an area of 1m x 1m and identify the weeds present. List down the
identified weeds by writing its local or English name and count the total
number of weeds identified. You may seek help from other farmers in
identifying the weeds. Observe health and safety protocol in doing the
activity.
Activity 2
Direction/Instruction: From the identified weeds in Activity 1, classify the
weeds according to their Morphology (Grasses, Sedges, and Broadleaves).
Write your answer following the table below. Observe health and safety
protocol in doing the activity.
Grasses
Sedges
Broadleaves
Activity 3
Direction/Instruction: After identifying the weed morphology from Activity 2,
you will now classify the weeds according to their life Cycle and Habitat, annual
or Perennials Upland weeds or Lowland weeds. Write the name of the weeds
and check the corresponding column below.
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Name of
Weeds
Perennials
Annual
Upland
Low land
Activity 4
Direction: Complete the table by writing the missing scientific name, Local
name, Family of weeds.
1.
Saluyot
Tiliaceae
2. Mimosa pudica L.
Mimosaceae
3. Physalis Angulata L.
Tino –tino
Exercise 1
Direction: From the reading resources Weeds: Prolific seed producers, write
down at least five (5) weeds species that you remember and how many seeds
per plant can be produced. Write your answer in the table below.
Weeds Species
V.
Seeds/Plants
Reflection:
In your understanding, why do farmers consider weeds as major group of
pest? Why there is a need to control weeds?
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VI.
Answer Key
Activity 4
Exercise 1
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