The experiment was carried out at Agronomy Field laboratory, Department of Agronomy and Agricultural Extension, university of Rajshahi, to study the effect of irrigation and sowing method on yield and yield attributes of mustard. The experiment consists of two factors i) irrigation viz. no irrigation (I0), one irrigation (I1)and two irrigations (I2) ii) sowing method viz. line sowing method (M1...

Background: Weeds are one of the ecological factors that affect agricultural economy permanently. Thus, understanding weed emergence and development is essential in decision making for management strategies. Objective: This study aimed to evaluate effect different sowing depths light intensities on species Euphorbia heterophylla Desmodium tortuosum under field conditions. Methods: Each consiste...

in order to evaluate the effect of sowing date and plant density on the morphological triats, yield and yield components of sweet corn (zea mays l. var sc. 403) an experiment was conducted at the khorasan razavi agricultural research and natural resources center, mashhad, iran during 2008. this experiment was carried out as split plot based on rcbd with four replications. the sowing date (14th ...

Greenhouse and field experiments with American ginseng (Panax quinquefolius L.) stratified seed sown at depths of 10 to 100 mm were carried out to determine effects of seeding depth on seedling emergence, growth and development and to calculate optimum seeding depth. The time to 50% seedling emergence (E50) in the field increased linearly from 17 d at 20 mm seeding depth to 42.5 d at 80 mm. See...

Combining ability, gene action and heterosis was studied for no. of days to 50% tasseling, no. of days to 50% silking, flag leaf area, plant height, no. of rows/ear, no. of grains/row, 300-grain weight and grain yield/plant in a Factorial Mating in Randomized Completely Randomized Design conducted separately in spring and autumn sowing dates, 2013 through hybridization between three parents of ...

Spatial monitoring of the sowing date plays an important role in crop yield estimation at the regional scale. The feasibility of using polarimetric synthetic aperture radar (SAR) data for early season monitoring of the sowing dates of oilseed rape (Brassica napus L.) fields is explored in this paper. Polarimetric SAR responses of six parameters, relying on polarization decomposition methods, we...

A study on influence of seed orientation on seed germination of three species of rattans namely, Calamus prasinus, C. stoloniferus and C. thwaitesii made by sowing the seeds at 2 cm depth in vertical (micropyle end upward), horizontal (micropylar end sideward) and in vertical(micropylar end downward) orientations. Maximum germination of 80% in seeds of C. prasinus recorded in inverted position ...

Deep-sowing is an effective measure to ensure seeds absorbing water from deep soil layer and emerging normally in arid and semiarid regions. However, existing varieties demonstrate poor germination ability in deep soil layer and some key quantitative trait loci (QTL) or genes related to deep-sowing germination ability remain to be identified and analyzed. In this study, a high-resolution geneti...

Rice (Oryza sativa L.) cultivars show impairment of growth in response to environmental stresses such as cold at the early seedling stage. Locally adapted weedy rice is able to survive under adverse environmental conditions, and can emerge in fields from greater soil depth. Cold-tolerant weedy rice can be a good genetic source for developing cold-tolerant, weed-competitive rice cultivars. An in...