the authors of the present paper studied some aspects of hydro and agrometeorological phenomena in terms of humidness, dryness and crop growing periods over india. revised water balance model is used to obtain the above and the results are examined during the two half centuries i.e 1901 to 1950 and 1951 to 1995 in delineating the climate change impacts over india. palmer drought severity index ...

in order to investigate the effect of different weed-free and weed-infested periods on the growth indices of black seed, a field experiment was conducted at the agricultural research station of ferdowsi university of mashhad, during 2009-2010 growing season. the experiment was laid out in randomized complete block design with 12 treatments and 3 replications. twelve experimental treatments cons...

N nutrition is one of the most important limitation factors for crop growth and yield. Precise and timely monitoring and detection of crop N nutrient conditions is necessary for improving the efficiency of N nutrition using and crop management, reducing environmental pollution caused by over nitrogen fertilizer application. In this paper the canopy reflectance spectra during the whole growth pe...

Crop rotation plays an important role in agricultural production models with sustainability considerations. Commonly associated strategies include the alternation of botanical families in the plots, the use of fallow periods and the inclusion of green manure crops. In this article, we address the problem of scheduling vegetable production in this context. Vegetables crop farmers usually manage ...

Apple Scab and Powdery Mildew in NY during the 2012 season The 2012 growing season came unexpectedly in early March during a period of warm weather following a warmer than usual winter. The early season was characterized by number borderline apple scab infection periods until the beginning of April a time when most model predictors were in agreement. The spring freeze hit during bloom which was...

Long-term rotation experiments were established at five sites (Tully, Ingham, Ayr, Mackay and Bundaberg) in sugar growing areas of coastal Queensland, Australia in 1993 and 1994. The rotations or breaks consisted of either pasture, crop other than sugarcane, or bare fallow for various periods of time ranging from 6 to 42 months. The type of break established three basic soil management strategi...