An experiment was conducted to evaluate the effects of air ion treatment on tomato plants (Lycopersicon esculentum P. Miller) in terms of: (1) growth and health; (2) fruit yield and quality; and (3) economic factors. The plants were grown by a commercial greenhouse (G.H.) grower employing soilless culture techniques. An air ion generator and emitters were installed in such fashion that 864 plants were exposed to a high negative air ion density flux, while 576 plants grew in an area which received relatively few ions. Normal operational procedures, with certain modifications, were employed for plant culture, feed/irrigation, and environmental control.
Plants responded vigouously to air ion stimulation, which equated to shortening of the seeding-to-harvest time period by two weeks as measured by vine growth, main stem height, time to blossoming, fruit set, and fruit yield. Throughout the first four-month growth period plant growth was good and no serious physiological disorders nor insect damage were observed. During the sixth harvest week a virus infection appeared in both control and ion-treated plants, but was not of sufficient severity to ruin the experimnent. Foliage and fruit samples were subjected to laboratory analyses. In general, the stimulated plants contained higher percentages of mineral elements than those of the controls. Fruit from ion-treated plants has more ascorbic and citric acid than that from control plants. Although there were no wide differences in fruit texture or flavor, a taste panel verdict indicated that fruit from the stimulated plants tasted better. An unexpected benefit was marked decrease in white fly infestation. All these factors combined with the low cost of air-ion treatment suggest that this modality offers potential for greenhouse cultivation of garden crops.
การทดลองได้ดำเนินการประเมินผลของการบำบัดอากาศไอออนพืชมะเขือเทศ (Lycopersicon esculentum P. มิลเลอร์) ในแง่ของ: เจริญเติบโตและสุขภาพ (1) (2) ผลไม้ผลผลิตและคุณภาพ และปัจจัยทางเศรษฐกิจ (3) พืชที่ปลูก ด้วยเครื่องปลูกเรือนกระจกพาณิชย์ (G.H.) ที่ใช้เทคนิค soilless วัฒนธรรม เครื่องกำเนิดไอออนเป็นอากาศและ emitters ถูกติดตั้งในแฟชั่นดังกล่าวที่ 864 พืชได้สัมผัสกับอากาศสูงลบไอออนความหนาแน่นฟลักซ์ ขณะที่ 576 พืชเติบโตในพื้นที่ที่รับกันค่อนข้างน้อย ปกติปฏิบัติงานต่าง ๆ มีการปรับเปลี่ยนบางอย่าง ได้จ้างโรงงานวัฒนธรรม อาหาร/ชลประทาน และควบคุมสิ่งแวดล้อมPlants responded vigouously to air ion stimulation, which equated to shortening of the seeding-to-harvest time period by two weeks as measured by vine growth, main stem height, time to blossoming, fruit set, and fruit yield. Throughout the first four-month growth period plant growth was good and no serious physiological disorders nor insect damage were observed. During the sixth harvest week a virus infection appeared in both control and ion-treated plants, but was not of sufficient severity to ruin the experimnent. Foliage and fruit samples were subjected to laboratory analyses. In general, the stimulated plants contained higher percentages of mineral elements than those of the controls. Fruit from ion-treated plants has more ascorbic and citric acid than that from control plants. Although there were no wide differences in fruit texture or flavor, a taste panel verdict indicated that fruit from the stimulated plants tasted better. An unexpected benefit was marked decrease in white fly infestation. All these factors combined with the low cost of air-ion treatment suggest that this modality offers potential for greenhouse cultivation of garden crops.
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