Agri 31 Lab Reviewer - Semester 1 2024-2025

AGRI 31 Lab ❁ SEMESTER 1 | AB5L | CHISTOPHER DE LEON SY. 2024-2025 rr DIRECTORY OF HERBS BY LEXINE LABAO 1  AGRI 31 Lab...

AGRI 31 Lab ❁ SEMESTER 1 | AB5L | CHISTOPHER DE LEON SY. 2024-2025 rr DIRECTORY OF HERBS BY LEXINE LABAO 1  AGRI 31 Lab ❁ SEMESTER 1 | AB5L | CHISTOPHER DE LEON SY. 2024-2025 rr WHY IS CROP CLASSIFICATION IMPORTANT? 1. Crop classification shows the relationship among different crop species. 2. It provides an organized way of studying the crops. 3. Knowing a crop’s classification can give us an idea about its characteristics (similar to its relative species). HOW DO WE IDENTIFY AND CLASSIFY CROPS IN THE FIELD? 1. By looking at their gross morphology 2. By using a dichotomous key IDENTIFICATION & CLASSIFICATION OF SELECTED CROPS HOW DO WE CLASSIFY CROPS? TAXONOMY Artificial Natural/Linnean Phylogenetics It is a science (theory and practice) of naming, System describing, and classifying organisms, both past and present. Classification Hierarchical Based on based on classification evolutionary convenience Binomial status SYSTEMATICS A common nomenclature No taxonomic feature or as formal name ranking, It is the study of the kinds and diversity of use can be (scientific unlike in the organisms, and the relationships among them the basis of name) Ex: Rice Natural/Linna through time (evolutionary history) grouping (Oryza sativa ean System Ex: L.) agronomic Subspecies, WHY DO WE NEED TO ACCURATELY IDENTIFY vs races & CROPS? horticultural cultivars crops 1. For accurate collection of desired crops 2. For propagation of useful plants 3. For determination of weeds growing with crops 4. For discrimination of toxic/poisonous plants BY LEXINE LABAO 2  AGRI 31 Lab ❁ SEMESTER 1 | AB5L | CHISTOPHER DE LEON SY. 2024-2025 rr CROPS CLASSIFICATIONS IMPORTANT TO CROP PRODUCTION 1. BASED ON BIOLOGICAL LIFE CYCLE 1. Annual - complete their cycle (sprout, grow and die) in one growing season 2. Biennial - ordinarily require two years or at least part of two growing seasons with a dormant period between growth stages to complete their life cycle 3. Perennial - do not die after flowering but life from year to year FORMAL NAMING SYSTEM BINOMIAL NOMENCLATURE (SCIENTIFIC NAME) Assigned by the rules of the International Code of Nomenclature (ICN) and 2. BASED NATURAL MODE OF International Code of Nomenclature for REPRODUCTION Cultivated Plants (ICNP) Eliminates confusion caused by common names in different languages 1. Sexual - crops that develop after undergoing meiosis and fertilization in the flower to produce a viable embryo in the seed 2. Asexual - crops that are produced by any vegetative means not involving meiosis and the union of gametes e.g., banana suckers BY LEXINE LABAO 3  AGRI 31 Lab ❁ SEMESTER 1 | AB5L | CHISTOPHER DE LEON SY. 2024-2025 rr 3. BASED ON GROWTH HABIT 1. Herb - succulent plants with self-supporting stems 2. Vine - succulent plants without 4. BASED ON USE OR PURPOSE self-supporting stems 3. Shrub - may have several main branches with no trunk and rarely grows higher than five meters 4. Tree - has a trunk attached branches, taller than a shrub 5. Liana - long-stemmed woody vines rooted in the soil, and use trees and other structures for vertical support BY LEXINE LABAO 4  AGRI 31 Lab ❁ SEMESTER 1 | AB5L | CHISTOPHER DE LEON SY. 2024-2025 rr BY LEXINE LABAO 5  AGRI 31 Lab ❁ SEMESTER 1 | AB5L | CHISTOPHER DE LEON SY. 2024-2025 rr 5. SPECIAL CLASSIFICATION: BASED ON AGRICULTURAL USE 1. Soilage - raw cut 2. Silage - ferment add molasses 3. Green manure - soil quality 4. Companion crop - put along with the preferred crop 5. Catch crop - substitute, fast life cycle than the previous one 6. Cover crop - to cover land, for wide distance of plantation, soil quality, prevent erosion 7. Trap crop - trap pests, magnolia to repent, aromatic herbs BY LEXINE LABAO 6