Abstract
Effects of Organic and Conventional Plantation of Chamomile On the Occurrence of Some Sucking Insect Pests and Their Natural Enemies In Fayoum Governorate, Egypt
Highlights
IntroductionMuch of what we known today about the relationship between crop nutrition and pest incidence comes from studies comparing the effects of organic agricultural practices and modern conventional methods on specific pest populations (Chau & Heong, 2005).Application of compost to improve soil structure, fertility and development and productivity of medicinal plants were studied in several cases (Raey & Alami-Milani, 2014).Rizk (2015) indicated that, sustainable agriculture depends on replenishing the soil while minimizing the use or need of non-renewable resources, such as natural gas (used in converting atmospheric nitrogen into synthetic fertilizer).Soil fertility practices can impact the physiological susceptibility of crop plants to insect pests by either affecting the resistance of individual plant to attack or by altering plant acceptability to certain herbivores (Chau & Heong, 2005).Hamdi S
In the organic chamomile plants, the population density of aphid exhibited one activity period extended from Oct. 27th until the end of Mar. 2015, with a peak of 113 individ./12 leaves which recorded on Nov. 6th
The same trend was observed in the subsequent year, which started on Oct. 24th until the first of Apr. 2016, with a peak of 99 individ., on Nov. 13th, (Tables1 & 2)
Summary
Much of what we known today about the relationship between crop nutrition and pest incidence comes from studies comparing the effects of organic agricultural practices and modern conventional methods on specific pest populations (Chau & Heong, 2005).Application of compost to improve soil structure, fertility and development and productivity of medicinal plants were studied in several cases (Raey & Alami-Milani, 2014).Rizk (2015) indicated that, sustainable agriculture depends on replenishing the soil while minimizing the use or need of non-renewable resources, such as natural gas (used in converting atmospheric nitrogen into synthetic fertilizer).Soil fertility practices can impact the physiological susceptibility of crop plants to insect pests by either affecting the resistance of individual plant to attack or by altering plant acceptability to certain herbivores (Chau & Heong, 2005).Hamdi S. Much of what we known today about the relationship between crop nutrition and pest incidence comes from studies comparing the effects of organic agricultural practices and modern conventional methods on specific pest populations (Chau & Heong, 2005). Rizk (2015) indicated that, sustainable agriculture depends on replenishing the soil while minimizing the use or need of non-renewable resources, such as natural gas (used in converting atmospheric nitrogen into synthetic fertilizer). Soil fertility practices can impact the physiological susceptibility of crop plants to insect pests by either affecting the resistance of individual plant to attack or by altering plant acceptability to certain herbivores (Chau & Heong, 2005).
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