tailieunhanh - Seasonal variation in leaf mineral nutrient and optimization of sampling dates for better indexing of pear leaf

The present investigation aimed at evaluating the seasonality of macro-nutrients contents of pear trees during the agriculture year 2007. Therefore, leaf samples were collected at fortnightly intervals form 1st may to 1st October and evaluated for nutrients. In general concentration of N, P,K decreased and those of Ca, Mg, Fe, and Mn content increased from first to last sampling date while as no conspicuous trend was observed in Cu content of leaves. The distinct period of stability for N, Mg, Mn and Zn contents occurred from July 15- August 15. However, P content of leaves showed least variation from July 1 to august 1. While stability period for leaf Ca was recorded from August 1 to September 1. While Cu and B were found to be stable from June 1-July 15. It is as such suggested that the leaves should be sampled form middle portion of current season growth from periphery during most stable periods of a particular nutrient for its proper diagnosis. However in general, July to August is the most representative period for diagnosis of leaf nutrient content in the leaves. | Seasonal variation in leaf mineral nutrient and optimization of sampling dates for better indexing of pear leaf

• Sinh học
• Seasonal variation
• Leaf index tissue
• Sampling date
• Indexing of pear leaf
• Leaf mineral nutrient
• Heat susceptibility index
• Seasonal variation in tomato genotypes
• Tomato genotypes
• Fatalities due to seasonal variation
• Soil chemical characteristics
• Agriculture Technical school
• Seasonal variation on soil nutrient quality
• Overview of impact of seasonal variation
• Annual increase
• Tourist arrival
• Tourist arrival in Nepal
• Seasonal variation of tourist arrival
• Modal prices
• Price movements
• Secular trends
• Seasonal variation in prices of soybean
• Quantitative parameters
• Major coconut growing districts
• Quantitative parameters of coconut
• Seasonal variation of quantitative parameters
• Agro climatic zones
• Calving in Murrah buffalo
• Different agro climatic zones
• Estimate seasonal variation
• Fatty acid composition
• Total lipid
• Capoeta trutta
• Docosahexaenoic acid
• Hirfanli Dam Lake
• Zooplankton densities
• Cyclostephanos dubius
• Phytoplankton biomass
• Wadi Al Arab Dam Lake
• Phytoplankton species
• Biological parameters
• Cyclotella meneghiniana
• Nitzschia sp
• Chlorophyll a
• Pinus nigra Arn
• Populus tremula L
• Ciconia ciconia L
• Plant growth regulators
• Gas exchange
• Seasonal variation in physiological behavior
• Physiological behavior
• Physiological behavior in mango
• Heavy metal
• River Narmada
• Atomic Absorption Spectrophotometer
• Waste water treatment plant
• Soil microbial biomass carbon
• Seasonal dynamics
• Depth variation
• Land use variation
• BMC Pediatrics
• International normalized ratio
• Myocardial infarction
• Ambient temperature
• Management of Forest Resources and Environment
• Groundwater depth
• Groundwater quality index
• Quality water in Xuan Mai
• Long term variation
• Reanalyzed wind waves
• Southern central coast
• ERA 20C dataset
• Tạp chí khoa học
• Tạp chí sinh học
• Environmental factors
• Phytoplankton composition
• Environmental advances
• Industrial waste
• Heavy metal(loid)
• Contaminated soil
• Herbaceous plant
• Cape of Ca Mau coast
• Wind waves
• Seasonal discrepancy
• Amino acid
• Seasonal change
• Free amino acids
• Liquid chromatography
• Cultivation practices
• Zayandeh Rood Dam Lake
• Oligo mesotrophic lake
• Evaluating water quality
• Phytoplankton communities
• Black gram
• Vigna mungo
• Insect pests
• Seasonal incidence
• Lower gangetic plains
• Tapi river
• Bacterial community
• Bacterial community composition
• Community composition
• Báo cáo lâm nghiệp hay
• cách trình bày báo cáo
• báo cáo lâm nghiệp
• công trình nghiên cứu lâm nghiệp
• tài liệu về lâm nghiệp