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Lecture 16 HOST PLANT RESISTANCE - DEFINITION - TYPES …
environmental stresses like insects, diseases, nematodes, heat, drought, cold, etc. E. Based on evolutionary concept - Sympatric resistance: Acquired by coevolution of plant and insect (gene for gene) Governed by major genes - Allopatric resistance: Not by co-evolution of plant and insect. Governed by many genes Mechanisms of Resistance
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Factors affecting crop production – climatic – edaphic ...
www.eagri.org• Germination, growth and development of crops are highly influenced by temperature. • Affects leaf production, expansion and flowering. • Physical and chemical processes within the plants are governed by air temperature. • Diffusion rates of gases and liquids changes with temperature.
WEEDS – HARMFUL AND BENIFICIAL EFFECTS
www.eagri.orgweeds, the average seed-production capacity was 26,500 per plant. • Weeds have the capacity to withstand adverse conditions in the field, because they can modify their seed production and growth according to the availability of moisture and temperature. They can germinate under adverse soil-moisture conditions, have short
1. Agriculture Heritage in India - eagri.org
www.eagri.org1. Agriculture Heritage in India Globally Important Agricultural Heritage Systems (GIAHS), as defined by the FAO (Food and Agriculture Organization of the …
DNA AND IT’ S STRUCTURE, FUNCTION, TYPES, MODES OF ...
www.eagri.orgDNA AND IT’ S STRUCTURE, FUNCTION, TYPES, MODES OF REPLICATION AND REPAIR . The discovery that DNA is the prime genetic molecule, carrying all the hereditary information within chromosomes, immediately had its attention focused on its structure. It was hoped that knowledge of the structure would reveal how DNA carries the genetic messages ...
CHAPTER 16: DRYING – GRAIN DRYING, TYPES OF DRYING, …
www.eagri.orgCHAPTER 16: DRYING – GRAIN DRYING, TYPES OF DRYING, TYPES OF DRYERS, IMPORTANCE OF DRYING ... If the atmospheric vapour pressure is greater than grain vapour pressure, grain absorbs moisture from atmosphere . Drying rate periods . Divided into 3 periods Constant rate period
QUANTITATIVE TRAITS - QUALITATIVE TRAITS AND …
www.eagri.orgQuantitative genetics (Inheritance of Multiple Genes) The phenotypic traits of the different organisms may be of two kinds, viz., qualitative and quantitative. The qualitative traits are the classical Mendelian traits of kinds such as form (e.g.,
12. EDUCATIONAL PSYCHOLOGY Introduction
www.eagri.orgTo understand the educational psychology and social psychology the knowledge on psychology is essential. Therefore, the derivation, definition and other details of psychology are discussed in this chapter. Derivation of the term The term psychology was derived from Greek; 'psyche' meaning is soul or Atman 'logus' means Science.
Soil formation factors and processes - eagri.org
www.eagri.orgPassive Soil forming factors The passive soil forming factors are those which represent the source of soil forming mass and conditions affecting it. These provide a base on which the active soil forming factors work or act for the development of soil. Parent Material It is that mass (consolidated material) from which the soil has formed.
TYPES AND SELECTION OF PUMPS - eagri.org
www.eagri.orgPump is noisy: (i) Too high suction lift (ii) Mechanical defects such as bent shaft, broken bearing etc. (b) Turbine Pumps: Turbine pumps consist of impellers placed below the water level and are driven by a vertical shaft rotated by an engine or motor placed at the ground level or …
Lecture1. Scope and Importance of Environmental Studies ...
www.eagri.orgIndia today is one of the first ten industrialized countries of the world. Today we have a good ... The coolest culprits of environmental degradation in cities are vehicular and metropolitan industrial pollution. Since 1975 the Indian economy has …
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biggreen.org• Plant Needs Hunt worksheet – one per student, print additional if needed • Clipboard or hard surface for sketching and coloring • Pencil, coloring materials ... susceptibility to diseases and insects, and ultimately poor food production. Spend time discussing the …
Medicinal Plant book - IUCN
www.iucn.orgmedicinal plant use for treating diseases and ailments is probably dates back to the beginning Of human civilization. Our forefathers Were compelled to use any natural substance that they could find to ease their sufferings caused by acute and chronic illnesses, physical discomforts, wounds and injuries, and even terminal illnesses.
Water Smart Plant List - SNWA
www.snwa.com6. Mojave native – A plant that grows naturally in some parts of the Mojave Desert. 7. Poor Drought Tolerance – unable to persist through prolonged conditions of low soil moisture. 8. Susceptible to Pests – Commonly attacked by diseases or insects. 9. Short lifespan – not expected to achieve the expected lifespan under local conditions.
According to the Paperwork Reduction Act of 1995 ... - USDA
www.aphis.usda.govANIMAL AND PLANT HEALTH INSPECTION SERVICE PLANT PROTECTION AND QUARANTINE . NOTICE OF ARRIVAL. INSTRUCTIONS: Immediately upon arrival, the permittee or his agent should prepare original and one copy of this form. Submit copies to the Plant Protection and Quarantine office having jurisdiction over the port of arrival. 1. NAME OF …
Bringing Plants into California - California Department of ...
www.cdfa.ca.govMay 15, 2009 · movement of plant material into California. They should also be able to advise you if treatment or inspection options are available for certifying plant material for entry into California when a state and/or federal quarantine apply. Contact Pest Exclusion for Questions: (916) 654 ‐ …
Kochia, Bassia scoparia, Plant Guide - USDA
www.nrcs.usda.govCaution: This plant is highly invasive. Caution: This plant can be toxic. Uses . Wildlife and Livestock: During early stages of growth, Bassia scoparia is palatable and has high forage value for all classes of livestock and can be hayed or grazed (Everitt et al., 1983; Stubbendieck et al., 2003). Kochia provides cover and the seeds are used as ...