An experiment was conducted at Rasht Rice Research Institute, in 2001 to study trait relationships and to determine the direct and indirect effects of different characteristics on grain yield of rice (Orgza sativa L.). A 9x2 factorial experiment in complete randomized block design with 3 replications was used. The two factors were 9 cultivars, namely: Hashemi, Ali Kazemi, Binam, Sepeedroud, Nem...

Enhancing the quality of transplant to reduce production costs is an important in tomato production. For this reason, the effects of growth retardants and the planting date on the tomato plant (Cheff) were investigated in this study. The first experiment involved five treatments (Paclobutrazol 0, 250 and 500 mg/L and Cycocel 0, 500 and 1000 mg/L), based on a complete randomized design in Labora...

Sensitivity of developmental stages of three sunflower cultivars to day length and temperature changes under field conditions were evaluated, and their development rates during various growth stages were modeled in a field experiment conducted in 1996 at the Agricultural Research Station, Isfahan University of Technology. Five dates of planting (April 27, May 12 and 27, and June 12 and 29) and ...

This experiment was conducted in 2005-2006 at Safiabad Agricultural Research Center to assess the effects of sowing date on the yield of canola genotypes. The design was a split plot in a completely randomized block with 3 replications. Main plots consisted of 3 levels of sowing date (November 1st , November 16th and December 1st) and subplots included 7 canola cultivars (Hyola60, Hyola308, Hy...

In order to study the response of morphology, yield and yield components of spring safflower (Carthamus tinctorious L.) cultivars to different sowing dates, an experiment was carried out using a split-plot design on the basis of a randomized complete block design with four replications, in Agricultural Sciences and Natural Resources University of Khouzestan, south-west of Iran at 2016-2017. Exp...

Determination of optimum sowing date plays an important role in crop management and achieving the higher yield. To study the effectof sowing date on seed yield of canola cultivars, a filed experiment was carried out as strip split plot block arrangement in randomized completed block design with three replications in 2017-18 and 2018-19 cropping seasons at Safiabad Agricultural and Natural Resou...