introduction the study of growth parameters such as net assimilation rate (nar), leaf area ratio (lar), relative growth rate (rgr) and leaf area duration (lad) are important for analyzing yield constraints. the growth parameters can be used to understand the crop response to environmental variables during the growing season. the aims of the present study were to 1) consider the growth indices u...

This study was conducted to determine whether selecting an optimum sowing date couldimprove yield. The experiment consisted of sowing a film-covered, drip-irrigated cotton field onfour sowing dates from April to May in 2011-2012 at the Agrometeorological ExperimentalStation of Wulanwusu, which was in an arid region of north-western China. Late sowing datesproduced less yield and water-use effic...

abstract- annual medicago species (medicago spp.) are native to the mediterranean region and widely used in fields and pastures in iran. there are several methods of sowing annual medicago species, each with different effects on the performance. however, there is currently no sufficient information about the appropriate methods for sowing medicago species. in order to evaluate methods of sowing...

277 Lathyrus (Lathyrus sativus L.) is mostly grown on the residual soil moisture in rice-fallows as utera (relay) crop (Gupta and Bhowmick, 2005; Mondal and Ghosh, 2005). But low productivity especially under utera system is the major problem associated with this crop (Bhowmick et al., 2005). Even there is a limited scope for agronomic manipulation under rice-utera system although it has potent...

The temporal pattern of control by phytochrome of the enzyme lipoxygenase (EC 1.13.1.13) in the m ustard seedling (Sinapis alba L.) is described. The biosynthetic system which produces lipoxygenase does not respond to phytochrome (Pfr) up to 33.25 h after sowing (25 °C ). By this time the control by Pfr comes suddenly and fully into play. At 48 h after sowing the system escapes from the control...

Different responses of plant genotypes to the change of environmental conditions have been the most important and challenging issue for plant breeders and agronomists for the selection of superior genotypes. Cumin is one of the most important medicinal and aromatic plants in Iran that are strongly affected by varying environmental conditions. This study was aimed to investigate E×SD interaction...

An experiment entitled, “Effects of planting methods on growth and yield paddy (Oryza sativa L.)” was carried out during Kharif, 2020 at Agricultural Research Station Farm, VadgaonMaval, Tal. Maval, Dist. Pune to investigate effects attributes L.). The field laid in Randomized Block Design (RBD) with three replications. There were eight treatments comprising different sowing rice viz., T1-Sowin...

The soybean cyst nematode (Heterodera glycines) has become an increasingly severe problem in soybean production areas in Brazil. The development and use of resistant cultivars is the most efficient method of minimizing losses due to this pathogen. Our objective was to test the efficiency of an alternative method for screening soybean genotypes for resistance to H. glycines in field plots. The a...