Titlebook: Diagnosis of the Nitrogen Status in Crops; Gilles Lemaire Book 1997 Springer-Verlag Berlin Heidelberg 1997 Pflanzen.Stickstoffdüngung.Stic

Mere僅僅

Psychological Comorbidities in Heart Failureles (Baldy and Stigter 1993). This broad definition covers a large range of cropping conditions and crop configurations, from the simplest clover-grass sward to the complex agroforestry systems. In addition to any specific advantage which might justify the use of a particular mixture, there is one m

灰姑娘

繁重

Michael M. Kreusser,Philip W. Raakene the actual crop mass to calculate the NNI value. As shown in Chapter 2, the NNI can be a valuable reference tool for experimental conditions where the determination of crop mass can be easily made, but it cannot be considered as an operational tool for crop diagnosis. It therefore seems necessary

FILLY

暫時(shí)過(guò)來(lái)

極微小

Granular

Use of the Nitrogen Nutrition Index for the Analysis of Agronomical Datatatus of a crop could be estimated by the nitrogen nutrition index, which relates the actual plant N% to the critical N%. The objective of this first section is to give some examples of the advantage of using such an indicator of crop N status for the analysis and interpretation of agronomical data,

責(zé)怪

Grasslandsn temperate and tropical regions. Moreover, grasslands are subjected to a wide variety of defoliation treatments according to management plans. This diversity of conditions leads to large temporal and spatial variations in sward structure: i.e., botanical composition, plant morphology and architectu

APEX

Wheat, Barley, and Durum Wheattillering to anthesis, for different cultivars and growth conditions. The results are mainly derived from Justes et al. (1994) with winter wheat. The validity of the curve of critical plant N% will also be evaluated for spring barely and durum wheat.

別名

Maize and Sorghumity of N soil mineralization in summer, the importance of animal manure inputs in many situations, and the uncertainty of the potential production as a consequence of variation in the intensity of summer drought, make prediction of the optimum N application rate very difficult.