Nutrient Requirements for Lettuce Transplants Using a Floatation Irrigation System. I. Phosphorus
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چکیده
منابع مشابه
Phosphorus: a limiting nutrient for humanity?
Phosphorus is a chemical element that is essential to life because of its role in numerous key molecules, including DNA and RNA; indeed, organisms require large amounts of P to grow rapidly. However, the supply of P from the environment is often limiting to production, including to crops. Thus, large amounts of P are mined annually to produce fertilizer that is applied in support of the 'Green ...
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abstract beneficial effects of humic substances on plant growth have been recognized by many researchers. a greenhouse experiment was conducted with humic acid (0, 20 and 50 mg/l) on lettuce cultivars ‘lollorossa’ and ‘javelina’ using completely randomized design at university of guilan. results showed that humic acid affected (p<5%) leaf number, height and nutrient uptake as well as ca, p and ...
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This fact sheet has been developed to support the implementation of the Natural Resources Conservation Service Feed Management 592 Practice Standard. The Feed Management 592 Practice Standard was adopted by NRCS in 2003 as another tool to assist with addressing resource concerns on livestock and poultry operations. Feed management can assist with reducing the import of nutrients to the farm and...
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Introduction: Nowadays, smart systems and advanced tools such as wearable systems have grown significantly in order to monitor patients and keep their condition under control. The aim of this study was to determine the requirements for designing a wearable smart blanket system (WSBS) to monitor patients in ambulance instantaneously. Method: After reviewing the characteristics of wearable system...
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ژورنال
عنوان ژورنال: HortScience
سال: 2001
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.36.6.1066